WO2011039697A1 - Press-bending machine - Google Patents
Press-bending machine Download PDFInfo
- Publication number
- WO2011039697A1 WO2011039697A1 PCT/IB2010/054349 IB2010054349W WO2011039697A1 WO 2011039697 A1 WO2011039697 A1 WO 2011039697A1 IB 2010054349 W IB2010054349 W IB 2010054349W WO 2011039697 A1 WO2011039697 A1 WO 2011039697A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piece
- press
- bending machine
- cross
- lower cross
- Prior art date
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
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0272—Deflection compensating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/04—Frames; Guides
Definitions
- the invention concerns an improved press-bending machine.
- PR press- bending machines are used of the type described in US 6 732 559 or WO 98/46378, see fig 1.
- PR machines comprise a fixed lower table or cross-piece 12 with a bending matrix 22, and an upper cross-piece 10, that is mobile with respect to the lower cross- piece 12 and that is . equipped with a punch 20 corresponding to the matrix 22.
- a frame 18 is used for supporting the upper cross-piece 10, whereas thanks to power actuator means, the cross-pieces 10, 12 come closer to one another so as to obtain the bending action.
- the frame 18 is always a solid and very heavy C- shaped structure (see for example figure 2 of US 6 732 559) since it must support the thrust reaction on the piece to be bent as well as the weight of the upper cross-piece. It comes from the above one piece heavy and bulky, both in height and in depth, thus limiting the mobility of the workers around the machine and the maximum stoke of the upper cross- piece. Moreover, a similar frame is very expensive and an enormous amount of metal is needed to build it.
- the purpose of the invention is to propose an alternative press-bending machine that does not have these drawbacks.
- the upper cross-piece is integral with the frame, and both are movable and displaceable by the power actuator means towards the lower cross-piece during a pressing phase.
- the power actuator means which in the prior art were mounted on the C-shaped frame and made the structure complicated because they required reinforced undercuts or seats, can comprise a linear actuator that exerts a thrust between two points of application so as to make them move apart during the pressing phase.
- the first of said points is (advantageously) made to push on the lower cross-piece and the second point is made to push on the frame and is located closer than the first one to a plane on which the lower cross-piece rests.
- the frame prefferably has a vertical stroke such as to be able to move down below the plane on which the lower cross-piece rests. This makes it possible for the frame to move down, for example, below the height of the flooring on which the lower cross-piece rests, avoiding having to use big industrial buildings for machines with high power and long strokes.
- the frame comprises two elongated bodies which are vertically mobile having the upper end fixedly connected to the upper cross-piece so as to pull it downwards and the lower end configured so as to receive the driving of the power actuator means.
- Such means are fixed to the short side of the lower cross-piece and are positioned at the side of each elongated body or on the same axis thereof.
- the elongated vertical bodies can each have two arms that are substantially parallel, spaced apart and joined at their ends with two joint-segments.
- the elongated vertical bodies have a symmetrical shape with respect to the longitudinal axis.
- These arms can have the upper joining portion that is fixedly connected to the upper cross-piece so as to pull it downwards and the lower joining portion configured so as to receive the driving of the power actuator means, which are fixed to the lower cross- piece and positioned in the empty space available between the two arms.
- the arms thus move outside of the actuator means. It should be noted how there is a more compact structure associated with a greater hardiness to traction stress.
- the two elongated bodies can be substantially U-shaped or have the shape of an elongated closed loop, and such as to leave a span between the arms through which a piece to be bent can be fed to the press-bending machine along a direction that is substantially parallel to the plane containing the cross-pieces.
- the two elongated bodies can be substantially U-shaped or have the shape of an elongated closed loop, and such as to leave a span between the arms through which a piece to be bent can be fed to the press-bending machine along a direction that is substantially parallel to the plane containing the cross-pieces.
- guide structures Since it is necessary for guide structures to be foreseen, they are advantageously arranged on the lower cross-piece in such a way that the two elongated bodies run along it in a guided manner.
- the guide elements were arranged on the edges of the C-shaped frame, which also has the drawback that in order to obtain for example one metre of useful stroke of the upper cross-piece, it is necessary to have a lm long cylinder, from which a lm long piston, and lm long guide elements come out. This is due to the fact that in the conventional "C- shaped" structure the guide elements can only be installed in axis with the pistons.
- the guide elements are positioned so that, in order to obtain a lm useful stroke of the upper cross-piece, there are only 2m of longitudinal bulk, i.e. a lm long cylinder plus a lm long piston.
- said guide structures comprise T- shaped guide elements, arranged on two sides of the lower cross-piece, in each of which the two arms of the elongated bodies are slidingly inserted.
- the lower cross-piece thus ensures the rigidity of the guiding structure.
- sliding skids can be arranged on the surface of the guide structures in sliding contact with the elongated bodies.
- the press-bending machine can be equipped with a platform arranged on the side of the lower cross- piece on which a manipulator robot for loading/unloading/moving the pieces to be bent, can move.
- a manipulator robot for loading/unloading/moving the pieces to be bent, can move.
- the platform can also surround at least three sides of the lower cross-piece, so that the robot can move .around the press-bending machine from one long side to the other of the lower cross-piece.
- figure 1 shows a known press-bending machine
- figure 2 shows a front view of a press-bending according to the invention
- figure 3 shows a side view of the press-bending machine of figure 2;
- figure 4 shows a top view of the press-bending machine of figure 2;
- figure 5 shows a perspective view of the press- bending machine of figure 2.
- a press-bending machine 30 can be seen having a fixed lower table or cross-piece with a bar 38 to receive a holder for a matrix bending and an upper cross-piece 32 equipped with mounts 36 for a punch corresponding to the matrix.
- the upper cross-piece 32 is mobile with respect to the lower cross-piece 34, so that the punch enters into the matrix bending a metal sheet arranged between them.
- a frame that supports the -upper cross-piece 32 and that is integral with it, is made up of two elongated bodies 40 movable vertically each having two arms 42, 44 that are substantially parallel, spaced apart and joined at the ends by two joint- segments 46, 48, upper and lower respectively.
- the bodies 40 extend in their entirety in a compact manner at the sides of the lower cross-piece 32.
- the press-bending machine 30 substantially has a symmetrical structure.
- the arms 42, 44 have the upper end fixedly connected to the upper cross-piece 32 so as to pull it downwards and the lower end configured so as to receive the driving of the power actuator means 50.
- the- two elongated bodies 40 substantially have the shape of an elongated closed loop, so as to leave, between the arms 42, 44, a span LL (see figure 3) , through which it is possible to see the press- bending machine 30 and through which it is possible to feed the latter with' a piece to be bent along a direction that is parallel to the greater dimension of the cross-pieces 32, 34.
- the means 50 are like a hydraulic cylinder 52, fixed to the lower cross-piece 34, from which a piston 54 can come out to a certain extent.
- the means 50 are located in the empty space between the two arms 42, 44.
- the piston 54 abuts against the lower portion 48 and receives the thrust, which is then transferred to the upper cross-piece 32.
- the actuator means 50 act as a linear actuator that exerts a thrust between two points of application: one point pushes against the upper cross-piece 34 and the other point pushes against the frame, where the latter is located lower than the former.
- the guide elements 60 are formed by a horizontal bar that projects with a base 64 on the short side of the lower cross-piece 34 for as far as the thickness of the arms 42, 44. Therefore, the bar 62 prevents the arms 42, 44 from separating from the lower cross-piece 34.
- Another bar 66 acts as a lower support for the arms 42, 44 on the side opposite to that in which the bar 62 acts.
- a platform 80 On the- side of the lower cross-piece 34, there is a platform 80, on which a robot (not shown) can move, whereas at the feet of the lower cross-piece 34 there is an electric motor 90 for pumping oil into the means 50.
- the frame Due to the structure of the frame, it can have a vertical stroke such as to go down below the plane on which the lower cross-piece 34 rests, i.e. below the level of the platform 80.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112012007497-0A BR112012007497B1 (en) | 2009-10-02 | 2010-09-28 | PRESSURE BENDING MACHINE |
EP10776423.5A EP2483008B1 (en) | 2009-10-02 | 2010-09-28 | Bending press |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITVR2009A000161 | 2009-10-02 | ||
ITVR2009A000161A IT1395798B1 (en) | 2009-10-02 | 2009-10-02 | FOLDING PRESS |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011039697A1 true WO2011039697A1 (en) | 2011-04-07 |
Family
ID=43348144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2010/054349 WO2011039697A1 (en) | 2009-10-02 | 2010-09-28 | Press-bending machine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2483008B1 (en) |
BR (1) | BR112012007497B1 (en) |
IT (1) | IT1395798B1 (en) |
WO (1) | WO2011039697A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013168082A1 (en) | 2012-05-08 | 2013-11-14 | Andrea Argentin | Positional reference device |
WO2015081359A1 (en) * | 2013-12-04 | 2015-06-11 | Trumpf Maschinen Austria Gmbh & Co. Kg. | Bending machine |
AT515130A1 (en) * | 2013-12-04 | 2015-06-15 | Trumpf Maschinen Austria Gmbh | bending press |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB784981A (en) * | 1956-05-17 | 1957-10-23 | F J Edwards Ltd | Improvements in or relating to metal working machines |
EP0476092B1 (en) * | 1990-03-15 | 1994-05-04 | Lift Verkaufsgeräte-Gesellschaft m.b.H. | Sheet-metal bending device |
WO1998046378A1 (en) | 1997-04-11 | 1998-10-22 | Luciano Gasparini | Method for bending a metal sheet on a press comprising measuring, compensating and controlling of the deformation of the cross-pieces of the press and press for carrying out the method |
US6732559B2 (en) | 2001-07-06 | 2004-05-11 | Luciano Gasparini | Integrating device to detect and recover the deformation of shoulders in a press-bending machine |
-
2009
- 2009-10-02 IT ITVR2009A000161A patent/IT1395798B1/en active
-
2010
- 2010-09-28 EP EP10776423.5A patent/EP2483008B1/en not_active Not-in-force
- 2010-09-28 WO PCT/IB2010/054349 patent/WO2011039697A1/en active Application Filing
- 2010-09-28 BR BR112012007497-0A patent/BR112012007497B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB784981A (en) * | 1956-05-17 | 1957-10-23 | F J Edwards Ltd | Improvements in or relating to metal working machines |
EP0476092B1 (en) * | 1990-03-15 | 1994-05-04 | Lift Verkaufsgeräte-Gesellschaft m.b.H. | Sheet-metal bending device |
WO1998046378A1 (en) | 1997-04-11 | 1998-10-22 | Luciano Gasparini | Method for bending a metal sheet on a press comprising measuring, compensating and controlling of the deformation of the cross-pieces of the press and press for carrying out the method |
US6732559B2 (en) | 2001-07-06 | 2004-05-11 | Luciano Gasparini | Integrating device to detect and recover the deformation of shoulders in a press-bending machine |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013168082A1 (en) | 2012-05-08 | 2013-11-14 | Andrea Argentin | Positional reference device |
WO2015081359A1 (en) * | 2013-12-04 | 2015-06-11 | Trumpf Maschinen Austria Gmbh & Co. Kg. | Bending machine |
AT515130A1 (en) * | 2013-12-04 | 2015-06-15 | Trumpf Maschinen Austria Gmbh | bending press |
AT515153A1 (en) * | 2013-12-04 | 2015-06-15 | Trumpf Maschinen Austria Gmbh | bending machine |
AT515153B1 (en) * | 2013-12-04 | 2015-08-15 | Trumpf Maschinen Austria Gmbh | bending machine |
AT515130B1 (en) * | 2013-12-04 | 2015-08-15 | Trumpf Maschinen Austria Gmbh | bending press |
Also Published As
Publication number | Publication date |
---|---|
IT1395798B1 (en) | 2012-10-19 |
EP2483008A1 (en) | 2012-08-08 |
BR112012007497A2 (en) | 2017-08-08 |
BR112012007497B1 (en) | 2021-07-27 |
ITVR20090161A1 (en) | 2011-04-03 |
EP2483008B1 (en) | 2013-06-26 |
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