EP1123758A1 - Poste de pliage sur presse - Google Patents
Poste de pliage sur presse Download PDFInfo
- Publication number
- EP1123758A1 EP1123758A1 EP01420003A EP01420003A EP1123758A1 EP 1123758 A1 EP1123758 A1 EP 1123758A1 EP 01420003 A EP01420003 A EP 01420003A EP 01420003 A EP01420003 A EP 01420003A EP 1123758 A1 EP1123758 A1 EP 1123758A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blades
- press
- profile
- punch
- matrix
- 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
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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
-
- 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
- B21D5/0209—Tools therefor
Definitions
- the present invention relates to a station which is part of a tool for follow intended to perform the folding, on press, of a thin metal plate, precut and preformed, for the production of a folded profile and closed by recovery.
- a tool to follow which comprises inter alia at least one folding station intended to obtain a profile U-shaped section. This station is followed by a large number of folding stations successive to very gradually fold one of the two branches of the U, then the other side branch of the U, until finally reaching the shape we want achieve.
- a post of folding comprising a punch whose lower end carries two blades transverse, fixed by means of two parallel axes. On each of these two blades is hinged a flat-faced shoe, which is also placed on the plate to fold up.
- a matrix is fixed on the sole of the press and comprises on the one hand articulated means, which face the flat faces of the hooves carried by the punch, and which are used to close these two blades at an angle given opening, and on the other hand a movable table mounted on a elastic repulsion. This table sinks telescopically into a cavity of the matrix and under the pressure of the two hooves and articulated means corresponding.
- This folding station is specifically used to ensure folding laminates, and furthermore it only allows for V-shaped bends at tip pointing down.
- the invention aims to remedy these drawbacks, and proposes for this a single position, which is part of a tool to follow, and in which is carried out a single descent of the press slide, partial folding and simultaneous of the two lateral branches of the U-profile towards each other to form a substantially isosceles triangle but open at its end superior.
- a folding station which is part of a tool to follow for folding a metal plate on a press thin, precut and preformed, for the production of a folded profile and closed by covering, this plate having already been folded according to a U-section profile in one or more previous posts of the tool to follow.
- the invention allows the number of tool posts to follow.
- the links are longer than the blades whose they are respectively united and their conjugate table is dimensioned and positioned so that the rods come to rest on it, and therefore move away, before the blades rest on the U-shaped plate.
- a punch and die station is part of a tracking tool that performs folding, on a press, a relatively thin metal plate 1, for the purpose to obtain at the press outlet a folded profile closed by overlap.
- the plate 1 is of a relatively thin thickness. In posts precedents of the tool to follow, the plate 1 was cut and preformed from of a metal strip.
- plate 1 has already been folded so as to form a profile whose cross section is U-shaped. Then, half and simultaneously the two right and left branches 2, 3 of the U, one towards the other, in a single descent of the press slide. We pass here, for this plate 1, from the U-shaped section of Figure 3A to the triangle section substantially isosceles, but with an open top, visible in Figure 6.
- This post has a punch 4 which is fixed on the slide of the press, and which therefore goes down and back up with the latter, and a matrix 5 which is fixed on the sole of the press.
- the means of connection between the punch 4 and the slide on the one hand, and between the matrix 5 and the sole on the other hand, are conventional and have therefore not been shown in the drawing.
- the punch 4 consists of a main body 6 which is bordered on the side and others at each end by two side cheeks 7 and 8.
- This body-cheek assembly 6, 7, 8 forms a yoke provided, on both sides, and towards its base, with two transverse axes, for example axes 9 and 10 adjoining the lateral cheek 7.
- the axes 9, 10 penetrate with gentle friction into cavities conjugates of the lower body 3, and they also maintain the cheeks 7, 8 against this body 3, in combination, on each side, with a fixing conventional upper 140 by screw (not shown).
- each blade 11, 12 are moreover fixed respective rods 15, 16 which extend them.
- These rods 15, 16 are fixed to their respective blades 11, 12 by conventional screw connections 17, 18. They are crossed by the axes of articulation of the blades 9, 10, so that they can frolic freely with the blade 11, 12 to which they are secured.
- These rods 15, 16 are also thicker in the longitudinal direction of the tool to follow than their associated blades 11, 12. They are also a little more longer (in the vertical direction of Figures 3A and 3B) than these blades. They each also has a rounded free end.
- the matrix 5 consists, on the one hand of a main part 19 which is positioned substantially in line with the main body 6 of the punch 4, and other part of two pieces or side tables 20, 21, of reduced transverse width, which are fixed to this main part 19, on either side thereof, by screws 22.
- the main part 19 has substantially the same transverse dimension L as the body 6 of the punch 4. It comprises a transverse housing 23 under the form of a central hollow which is intended to receive, and therefore to position and maintain in position, the plate 1 in the form of a U-shaped profile ( Figure 3A).
- This housing 23 also comprises a cavity 24 in which slides, against the elastic repulsive force of a spring 26, a support piston or table 25.
- the aforementioned side pieces 20, 21 are fixed, by the aforementioned screws 22, to this piston support or table 25.
- the length L1 of the cavity 24 is slightly less than the overall length L2 of the horizontal branch 39 of the U-shaped profile formed by the plate 1. More precisely, the difference between these lengths L1 and L2 is substantially equal to twice the thickness of this plate metallic 1.
- the side pieces 20 and 21 are positioned to the right of each pair 15, 16 of conjugate links.
- Their upper surface 28 forms two curved and symmetrical housings 29, 30, each suitable for receiving a link respectively 15, 16. These two housings meet to form a line of point 31 for separating and spacing the two links 15, 16 (see the Figure 4B). They present, opposite and symmetrically on either side of this tip line 31, a respective rounding 32, 33 pronounced enough to stop the spacing of these links (see Figure 58).
- the tip line 31 is already introduced between the two rods 15 and 16, and is therefore ready to separate them from each other during the descent of the punch.
- the blades 11, 12, which are respectively secured to the rods 15, 16, move apart in the same way, and the respective dimensions of the rods 15, 16 and the curved housings 29 and 30 are adjusted so that, in the position of maximum spacing of the rods, in referring to Figure 5B, the blades 11 and 12 come to bear on the corners respective internal sections 34 and 35 of the U-shaped profile formed by the plate 1.
- the plate 1 then adopted the form shown in Figure 6, that is to say has a section substantially in the form of an isosceles triangle 40 open at its Mountain peak.
- the triangle profile 40 can now undergo other operations of folding in other subsequent positions of the tool to be followed, until a profile fully folded on itself and closed by overlap.
- matrix 5 could include a single side piece 20, on one side, instead of two side pieces 20 and 21, one on each side.
- the punch 4 would not include consequence that a single pair of rods 15, 16.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
- un poinçon fixé au coulisseau de la presse et dont l'extrémité inférieure porte deux lames transversales qui sont fixées de manière pendulaire sur celui-ci au moyen de deux axes parallèles,
- une matrice fixée sur la semelle de la presse et comprenant d'une part des moyens, qui se combinent avec des moyens conjugués portés par le poinçon, pour ouvrir ces deux lames selon un angle d'ouverture donné qui correspond à l'angle au sommet dudit triangle, et comprenant d'autre part une table mobile montée sur un organe de répulsion élastique, cette table s'enfonçant, de manière télescopique et sous la pression des deux lames alors ouvertes, dans une cavité correspondante de la matrice, cette cavité étant de longueur inférieure à celle hors-tout de la branche horizontale du profilé en U d'une valeur sensiblement égale à deux fois l'épaisseur de la plaque à replier, forçant alors les deux branches latérales du profilé en U à continuer à se replier l'une vers l'autre pour venir se plaquer contre ces lames,
- sur le poinçon, au moins un couple de biellettes qui sont respectivement placées en bout de chacune des lames, dans leur prolongement, et qui sont solidarisées à ces lames,
- sur la matrice, au moins une table latérale placée au droit de ces deux biellettes, cette table étant mobile verticalement et montée sur un organe de répulsion élastique, la surface supérieure de cette table étant conformée pour obliger, lorsqu'elles viennent appuyer sur cette table, les deux biellettes conjuguées à s'écarter l'une de l'autre jusqu'au dit angle d'écartement déterminé.
- la Figure 1 est une vue en perspective partiellement éclatée de ce poste de pliage pour outil à suivre,
- la Figure 2 est une vue en coupe transversale de ce même poste, selon un plan vertical passant par un des deux axes d'articulation des lames et biellettes,
- les Figures 3A et 3B, 4A et 4B, 5A et 5B, 6, montrent, en coupes longitudinales simplifiées, les phases successives de fonctionnement, lors de la descente du coulisseau de la presse, de ce poste de pliage, la Figure 6 faisant aussi comprendre comment les lames se dégagent lorsque le coulisseau remonte.
Claims (6)
- Poste de pliage faisant partie d'un outil à suivre destiné à effectuer le pliage sur presse d'une plaque métallique mince (1), prédécoupée et préformée, pour la réalisation d'un profilé plié et fermé par recouvrement, cette plaque ayant été déjà pliée selon un profilé à section en U dans un ou plusieurs postes précédents de l'outil à suivre,
caractérisé en ce qu'il comporte, afin d'effectuer, en une seule et même descente du coulisseau de la presse, un repliement partiel et simultané des deux branches latérales (2, 3) du profilé en U l'une vers l'autre pour former un triangle (40) sensiblement isocèle et ouvert à son sommet (36):un poinçon (4) fixé au coulisseau de la presse et dont l'extrémité inférieure porte deux lames transversales (11, 12) qui sont fixées de manière pendulaire sur celui-ci au moyen de deux axes parallèles (9, 10),une matrice (5) fixée sur la semelle de la presse et comprenant d'une part des moyens (20), qui se combinent avec des moyens conjugués (15, 16) portés par le poinçon (4), pour ouvrir ces deux lames (11, 12) selon un angle d'ouverture donné qui correspond à l'angle au sommet dudit triangle (40), et comprenant d'autre part une table mobile (25) montée sur un organe de répulsion élastique (26), cette table s'enfonçant, de manière télescopique et sous la pression des deux lames (11, 12) alors ouvertes, dans une cavité (24) correspondante de la matrice, cette cavité étant de longueur (L1) inférieure à celle hors-tout (L2) de la branche horizontale (39) du profilé en U d'une valeur sensiblement égale à deux fois l'épaisseur de la plaque (1) à replier, forçant alors les deux branches latérales (2, 3) du profilé en U (1) à continuer à se replier l'une vers l'autre pour venir se plaquer contre ces lames (11, 12), de sorte que, lorsque le coulisseau remonte ensuite, les lames (11, 12) se libèrent d'elles-mêmes desdits moyens d'ouverture (15, 16, 20) et reviennent pendre sous le poinçon (4), ce qui leur permet de passer alors par l'ouverture restante (36) au sommet dudit triangle (40) et donc de se dégager de la plaque (1) ainsi partiellement repliée. - Poste de pliage selon la revendication 1, caractérisé en ce que lesdits moyens pour ouvrir ces lames (11, 12) d'un angle donné comportent :sur le poinçon (4), au moins un couple de biellettes (15, 16) qui sont respectivement placées en bout de chacune des lames (11, 12), dans leur prolongement, et qui sont solidarisées à ces lames,sur la matrice (5), au moins une table latérale (20) placée au droit de ces deux biellettes, cette table (20) étant mobile verticalement et montée sur un organe de répulsion élastique (26), la surface supérieure (28) de cette table (20) étant conformée (29, 30, 31) pour obliger, lorsqu'elles viennent appuyer sur cette table (20), les deux biellettes conjuguées (15, 16) à s'écarter l'une de l'autre jusqu'au dit angle d'écartement déterminé.
- Poste de pliage selon la revendication 2, caractérisé en ce que ladite table latérale (20) est solidaire de la table mobile (25) de la matrice (19).
- Poste de pliage selon la revendication 2 ou 3, caractérisé en ce que les biellettes (15, 16) sont plus longues que les lames (11, 12) dont elles sont respectivement solidaires, et en ce que leur table conjuguée (20) est dimensionnée et positionnée de sorte que ces biellettes (15, 16) viennent s'appuyer sur elle, et donc s'écarter, avant que ces lames (11, 12) ne s'appuient sur le profilé en U (1).
- Poste de pliage selon l'une des revendications précédentes, caractérisé en ce que la surface supérieure (28) de ladite table latérale (20), forme deux logements courbes et symétriques (29, 30), aptes chacun à recevoir une biellette respective (15, 16), ces deux logements (29, 30) se rejoignant pour former une ligne de pointe (31) de séparation et d'écartement des deux biellettes (15, 16), et présentant, à l'opposé de cette ligne de pointe (31), un arrondi respectif (32, 33) assez prononcé pour stopper l'écartement de ces biellettes.
- Poste de pliage selon l'une des revendications précédentes, caractérisé en ce que ladite table mobile (25) de la matrice (19) fait partie d'un logement (23) de réception et de positionnement dudit profilé en U (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0000757A FR2803779B1 (fr) | 2000-01-19 | 2000-01-19 | Poste de pliage sur presse |
FR0000757 | 2000-01-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1123758A1 true EP1123758A1 (fr) | 2001-08-16 |
EP1123758B1 EP1123758B1 (fr) | 2004-08-18 |
Family
ID=8846154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20010420003 Expired - Lifetime EP1123758B1 (fr) | 2000-01-19 | 2001-01-09 | Poste de pliage sur presse |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1123758B1 (fr) |
DE (1) | DE60104914T2 (fr) |
ES (1) | ES2223755T3 (fr) |
FR (1) | FR2803779B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108453157A (zh) * | 2018-01-15 | 2018-08-28 | 江阴协圣精密科技有限公司 | 一种折弯模具及包含其的自动化折弯设备 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109894661B (zh) * | 2019-03-21 | 2020-10-27 | 天津中德应用技术大学 | V型压板装置 |
CN116689559B (zh) * | 2023-08-07 | 2023-09-29 | 辽宁华天航空科技股份有限公司 | 一种钛合金型材热成型的设备及方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE80940C (fr) * | ||||
US5058269A (en) * | 1990-08-30 | 1991-10-22 | May Fabricating Company, Inc. | Method of forming rectangular metal tubes |
FR2739580A1 (fr) * | 1995-10-04 | 1997-04-11 | Lorraine Laminage | Procede et dispositif de pliage le long d'une generatrice d'un flan metallique a structure multicouche |
-
2000
- 2000-01-19 FR FR0000757A patent/FR2803779B1/fr not_active Expired - Fee Related
-
2001
- 2001-01-09 EP EP20010420003 patent/EP1123758B1/fr not_active Expired - Lifetime
- 2001-01-09 DE DE2001604914 patent/DE60104914T2/de not_active Expired - Lifetime
- 2001-01-09 ES ES01420003T patent/ES2223755T3/es not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE80940C (fr) * | ||||
US5058269A (en) * | 1990-08-30 | 1991-10-22 | May Fabricating Company, Inc. | Method of forming rectangular metal tubes |
FR2739580A1 (fr) * | 1995-10-04 | 1997-04-11 | Lorraine Laminage | Procede et dispositif de pliage le long d'une generatrice d'un flan metallique a structure multicouche |
Non-Patent Citations (3)
Title |
---|
"roller-tool forms difficult bends", METALWORKING PRODUCTION, vol. 103, no. 38, 18 September 1959 (1959-09-18), XP002151376 * |
DAHL VASBY: "forming and bending die", THE TOOL ENGINEER, vol. 44, January 1960 (1960-01-01), XP002151377 * |
KASPER: "matrice façonnant une forme en épingle à cheveux dans du fer en U", LA MACHINE MODERNE, vol. 56, no. 638, May 1962 (1962-05-01), pages 45, XP002151375 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108453157A (zh) * | 2018-01-15 | 2018-08-28 | 江阴协圣精密科技有限公司 | 一种折弯模具及包含其的自动化折弯设备 |
Also Published As
Publication number | Publication date |
---|---|
FR2803779A1 (fr) | 2001-07-20 |
FR2803779B1 (fr) | 2002-03-01 |
EP1123758B1 (fr) | 2004-08-18 |
DE60104914D1 (de) | 2004-09-23 |
DE60104914T2 (de) | 2005-01-20 |
ES2223755T3 (es) | 2005-03-01 |
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