EP1123758B1 - Biegevorrichtung für eine Presse - Google Patents

Biegevorrichtung für eine Presse Download PDF

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Publication number
EP1123758B1
EP1123758B1 EP20010420003 EP01420003A EP1123758B1 EP 1123758 B1 EP1123758 B1 EP 1123758B1 EP 20010420003 EP20010420003 EP 20010420003 EP 01420003 A EP01420003 A EP 01420003A EP 1123758 B1 EP1123758 B1 EP 1123758B1
Authority
EP
European Patent Office
Prior art keywords
blades
platen
links
profile
press
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.)
Expired - Lifetime
Application number
EP20010420003
Other languages
English (en)
French (fr)
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EP1123758A1 (de
Inventor
Alain c/o Résidence les Bauchenets Gorce
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.)
EMT 74
Original Assignee
EMT 74
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Filing date
Publication date
Application filed by EMT 74 filed Critical EMT 74
Publication of EP1123758A1 publication Critical patent/EP1123758A1/de
Application granted granted Critical
Publication of EP1123758B1 publication Critical patent/EP1123758B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 for folding, on a press, a thin metal plate, precut and preformed, for the production of a folded profile and closed by recovery (see for example US-A-5058269).
  • a tool to follow which comprises inter alia at least one folding station intended to obtain a profile with 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.
  • 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 higher.
  • a folding station which is part of a tool to follow for folding a metal plate on a press thin, pre-cut and pre-formed, for the production of a folded profile 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 be followed, 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 from 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 up with the latter, and a matrix 5 which is attached to the sole of the press.
  • the means of connection between the punch 4 and the slide on the one hand, and between the die 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 (vertically in 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 at 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 tip 31 for separation and spacing of 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 links 15, 16 and of 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)

Claims (6)

  1. Faltstation, die zu einem Folgewerkzeug gehört, das dazu bestimmt ist, auf einer Presse das Falten einer dünnen Metallplatte (1), die zuvor ausgeschnitten und vorgeformt ist, für die Herstellung eines gefalteten und durch Überlappen geschlossenen Profils durchzuführen, wobei diese Platte bereits nach einem Profil mit U-Querschnitt auf einem oder mehreren dem Folgewerkzeug vorausgehenden Stationen gefaltet wurde,
    dadurch gekennzeichnet, dass sie zum Durchführen eines teilweisen und gleichzeitigen Zurückfaltens der beiden seitlichen Schenkel (2, 3) des U-Profils zueinander zum Bilden eines im Wesentlichen gleichschenkligen Dreiecks (40), das an seinem Scheitel (36) offen ist, in einem einzigen und gleichen Absenken des Pressenstößels Folgendes umfasst:
    einen Stempel (4), der an dem Pressenstößel befestigt ist und dessen unteres Ende zwei Querklingen (11, 12) trägt, die an diesem mittels zweier paralleler Achsen (9, 10) pendelnd befestigt sind,
    ein Gesenk (5), das auf dem Gesenkhalter befestigt ist und einerseits Mittel (20) umfasst, die mit zugeordneten Mitteln (15, 16) zusammenwirken, die von dem Stempel (4) getragen werden, um diese zwei Klingen (11, 12) um einen gegebenen Öffnungswinkel, der dem Winkel am Scheitel des Dreiecks (40) entspricht, zu öffnen und andererseits einen beweglichen Tisch (25) umfasst, der auf ein elastisches Rückstoßorgan (26) montiert ist, wobei sich dieser Tisch teleskopisch und unter dem Druck der zwei Klingen (11, 12), die dabei offen stehen, in einen entsprechenden Hohlraum (24) des Gesenks einfügt, wobei dieser Hohlraum eine Länge (L1) hat, die um einen Wert kleiner ist als die Gesamtlänge (L2) des horizontalen Schenkels (39) des U-Profils, der im Wesentlichen gleich zwei Mal der Stärke der zurückzufaltenden Platte (1) ist, und dabei die zwei seitlichen Schenkel (2, 3) des U-Profils (1) dazu zwingt, sich weiter zueinander zu falten, um sich gegen diese Klingen (11, 12) zu drücken,
    so dass die Klingen (11, 12), wenn der Stößel anschließend hochfährt, sich von selbst aus den Öffnungsmitteln (15, 16, 20) befreien und wieder unter dem Stempel (4) hängen, was es ihnen erlaubt, durch die am Scheitel des Dreiecks (40) verbleibende Öffnung (36) hindurch zu treten und sich von der Platte (1), die derart teilweise zurückgefaltet ist, zu lösen.
  2. Faltstation nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel zum Öffnen dieser Klingen (11, 12) um einen gegebenen Winkel Folgendes umfassen:
    an dem Stempel (4) mindestens ein Paar Schwingarme (15, 16), die jeweils am Ende jeder der Klingen (11, 12) in deren Verlängerung platziert und fest mit diesen Klingen verbunden sind,
    an dem Gesenk (5) mindestens einen seitlichen Tisch (20), der gegenüber diesen zwei Schwingarmen platziert ist, wobei dieser Tisch (20) vertikal beweglich und auf ein elastisches Rückstoßorgan (26) montiert ist, wobei die obere Fläche (28) dieses Tischs (20) ausgebildet (29, 30, 31) ist, um die zwei einander zugeordneten Schwingarme (15, 16) zur Aufspreizung bis zu dem festgelegten Spreizwinkel zu zwingen, wenn sie sich auf diesem Tisch (20) abstützen.
  3. Faltstation nach Anspruch 2, dadurch gekennzeichnet, dass der seitliche Tisch (20) fest mit dem beweglichen Tisch (25) des Gesenks (19) verbunden ist.
  4. Faltstation nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Schwingarme (15, 16) länger sind als die Klingen (11, 12), mit welchen sie jeweils fest verbunden sind, und dass der ihnen zugeordnete Tisch (20) derart bemessen und positioniert ist, dass diese Schwingarme (15, 16) sich auf ihm abstützen und sich daher spreizen, bevor sich diese Klingen (11, 12) auf dem U-Profil (1) abstützen.
  5. Faltstation nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die obere Fläche (28) des seitlichen Tischs (20) zwei gebogene und symmetrische Aufnahmen (29, 30) bildet, die jeweils einen Schwingarm (15, 16) aufnehmen können, wobei diese zwei Aufnahmen (29, 30) sich treffen, um eine Scheitellinie (31) zum Trennen und Beabstanden der zwei Schwingarme (15, 16) zu bilden, und dieser Scheitellinie (31) gegenüberliegend jeweils eine Rundung (32, 33) aufweisen, die ausreichend ausgeprägt ist, um das Spreizen dieser Schwingarme zu stoppen.
  6. Faltstation nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der bewegliche Tisch (25) des Gesenks (19) zu einer Aufnahme (23) zum Aufnehmen und Positionieren des U-Profils (1) gehört.
EP20010420003 2000-01-19 2001-01-09 Biegevorrichtung für eine Presse Expired - Lifetime EP1123758B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0000757 2000-01-19
FR0000757A FR2803779B1 (fr) 2000-01-19 2000-01-19 Poste de pliage sur presse

Publications (2)

Publication Number Publication Date
EP1123758A1 EP1123758A1 (de) 2001-08-16
EP1123758B1 true EP1123758B1 (de) 2004-08-18

Family

ID=8846154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010420003 Expired - Lifetime EP1123758B1 (de) 2000-01-19 2001-01-09 Biegevorrichtung für eine Presse

Country Status (4)

Country Link
EP (1) EP1123758B1 (de)
DE (1) DE60104914T2 (de)
ES (1) ES2223755T3 (de)
FR (1) FR2803779B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
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
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE80940C (de) *
US5058269A (en) * 1990-08-30 1991-10-22 May Fabricating Company, Inc. Method of forming rectangular metal tubes
FR2739580B1 (fr) * 1995-10-04 1997-12-26 Lorraine Laminage Procede et dispositif de pliage le long d'une generatrice d'un flan metallique a structure multicouche

Also Published As

Publication number Publication date
DE60104914D1 (de) 2004-09-23
FR2803779A1 (fr) 2001-07-20
EP1123758A1 (de) 2001-08-16
FR2803779B1 (fr) 2002-03-01
DE60104914T2 (de) 2005-01-20
ES2223755T3 (es) 2005-03-01

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