EP0323792B1 - Folgewerkzeug für Tiefziehpresse - Google Patents

Folgewerkzeug für Tiefziehpresse Download PDF

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Publication number
EP0323792B1
EP0323792B1 EP88420426A EP88420426A EP0323792B1 EP 0323792 B1 EP0323792 B1 EP 0323792B1 EP 88420426 A EP88420426 A EP 88420426A EP 88420426 A EP88420426 A EP 88420426A EP 0323792 B1 EP0323792 B1 EP 0323792B1
Authority
EP
European Patent Office
Prior art keywords
deep
plate
die
carrying
vertical
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
EP88420426A
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English (en)
French (fr)
Other versions
EP0323792A1 (de
Inventor
Gérard Lavorel
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.)
ATELIER DE DECOUPAGE EMBOUTISSAGE ET MECANIQUE de la VALLEE DE L'ARVE ADEMVA
Original Assignee
ATELIER DE DECOUPAGE EMBOUTISSAGE ET MECANIQUE de la VALLEE DE L'ARVE ADEMVA
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.)
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Application filed by ATELIER DE DECOUPAGE EMBOUTISSAGE ET MECANIQUE de la VALLEE DE L'ARVE ADEMVA filed Critical ATELIER DE DECOUPAGE EMBOUTISSAGE ET MECANIQUE de la VALLEE DE L'ARVE ADEMVA
Priority to AT88420426T priority Critical patent/ATE63845T1/de
Publication of EP0323792A1 publication Critical patent/EP0323792A1/de
Application granted granted Critical
Publication of EP0323792B1 publication Critical patent/EP0323792B1/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
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/02—Ejecting devices
    • B21D45/04—Ejecting devices interrelated with motion of tool
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/28—Deep-drawing of cylindrical articles using consecutive dies

Definitions

  • the present invention relates to a tool to follow for a stamping press.
  • stampings are formed in one or more parallel rows from a metal strip which is supplied along the axis of the machine.
  • the strip itself which supports the stampings, and which, progressively advancing, serves as a transfer device from one position to the next.
  • This more expensive mode of work is unfortunately not applicable for the production of very deep stampings, as indicated above, because the parts, which are held only by thin metal strands on the strip, tend to be placed across.
  • this tool to be followed is also such that the body of the piston, placed in the drawing orifice, is hollow and constitutes the body of a single-acting cylinder fed by an orifice which puts in communication the chamber of this jack with the space located under this piston and supplied with compressed fluid, the free end of the rod of this jack carrying the means for supporting the bottom of the pre-stamped.
  • the support means of the strip are constituted by horizontal and longitudinal bars which are mounted at the free end of the vertical rods of jacks, formed in the body of the bottom sole.
  • the die holder plate is provided with longitudinal grooves capable of serving as housings for the bars when they are in the low position.
  • this press tool to follow has an upper sole 1, fixed to the press slide (not shown), and a lower sole 2, fixed to the press table (also not shown).
  • the sole 1 carries a plurality of punches 3, including one punch per elementary stamping station. For example, for each stamping station, there are three identical punches aligned in the transverse direction.
  • FIG. 1 shows a stamping station which is not the first station, so that it is a "pre-stamped" 7, cup-shaped, which is presented on this station, vertically vertical to the hallmark 3.
  • a blind blind vertical orifice 8 which is, very conventionally, of diameter slightly greater than that of the punch 3.
  • This orifice 8 contains , still in a manner known per se, a piston 9 with vertical sliding which is pushed elastically upwards by means of an air pressure applied by a pipe 10, to the lower part 11 of the blind hole 8 (the assembly 8 at 10 is actually a pneumatic cylinder).
  • the piston 9 is hollow and it constitutes the body of a single-acting pneumatic cylinder, supplied with compressed air by a lower orifice 12 bringing the chamber 13 of this cylinder into communication with the space 11 predefined.
  • This jack comprises a piston 14 and a rod 15, the free end of which carries a horizontal disc 16 on which rests the bottom of the pre-drawn 7, as seen in FIG. 1. Note that with these arrangements, the pressure exerted from bottom to top on the piston 14 is quite low.
  • the horizontal disc 16 therefore serves as a means of supporting the pre-stamped 7.
  • other elastic support members are provided, one on either side of each pre-stamped 7.
  • these other support members are constituted by two horizontal longitudinal bars 17, 18, mounted at the free end of the vertical rods 19, 20 of two pneumatic cylinders 21, 22 which are arranged as shown in the body of the lower flange 2.
  • the chambers 23, 24 of these jacks 21, 22 are supplied, under relatively low pressure, with compressed air by means of pipes 25 and 26.
  • Two longitudinal grooves 27 and 28 are provided in the plate 4 to receive the bars 17 and 18 when they are in the low position, with the rods 19 and 20 retracted into the chambers 23, 24 of the jacks 21 and 22.
  • the tool comprises four support bars 17 and 18. More generally, for n rows of pre-stamped 7, there will be n + 1 support bars 17, 18.
  • this tool comprises a horizontal longitudinal plate 29, rigid and thick, of width substantially equal to or slightly greater than that of the strip 6, this plate being free to move vertically between a lower stop 30, constituted by a protrusion 33 of the plate 4, and an upper stop 31 which is constituted by a disc carried by a vertical baluster 32 fixed in the protrusion 33.
  • the plate 29 is pierced with an orifice 34 for the passage of the baluster 32.
  • balusters 32 which are distributed on the plate 4 so as to guide the plate 29 in vertical sliding, the elastic support of the latter being provided by helical springs 35 which surround each guide column 32 and which tend to push the plate 29 upwards.
  • the piston 38 of this cylinder is therefore pushed upwards, and it is on the free end of its rod 39 that the upper sole 1 comes to bear in order to lower the plate 29 when the slide of the press itself initiates its descent.
  • the rigid plate 29 For each unit stamping station (by "unit stamping station” means the elementary stamping station constituted by a punch 3 and a determined die 5), the rigid plate 29 includes a vertical and cylindrical centering tube 40, directed downwards and whose length, relatively small, is slightly greater than the depth of the pre-stamped 7.
  • This tube 40 is placed vertically above the pre-stamped 7, in which it is able to penetrate to ensure its centering, and it must also allow passage to the punch 3 during its vertical movement.
  • This centering tube 40 is therefore of external diameter substantially equal to the internal diameter of the pre-stamped 7, with the clearance close to allowing it to slide in this pre-stamped 7, and its internal diameter is substantially equal to the diameter of the cylindrical punch 3, here still close to play capable of allowing the sliding of this punch in this tube 40.
  • the plate 29 On either side, in the transverse direction, of each centering tube 40, the plate 29 is equipped with protrusions 41, 42, which are directed downwards and which are vertically vertical to the support bars 17 and 18
  • These protuberances 41, 42 are of length substantially equal to slightly greater than that of the centering tube 40, and they are intended to press on the discs 17, 18 to drive them in the lowering movement communicated by the slide of the press, to the upper sole 1 and, via the support cylinder 36, to the rigid plate 29.
  • the press slide starts its descent by driving the sole 1 in the direction of the arrow F.
  • This sole 1 presses on the free end of the rod 39 of the jack 36, but this rod does not sink, because the pressure exerted from bottom to top on the piston 38 is much greater than that exerted from bottom to top on the plate 29 by all of the springs 35.
  • These springs 35 therefore collapse and the plate 29 descends with the sole 1 and the punch 3.
  • the plate 29 drives, when the protrusions 41, 42 have come to bear on the bars 17 and 18, the rods 19 and 20 of the jacks 21 and 22, so that the strip also descends while also causing the concomitant descent of the disc 16, because the pressure exerted on the piston 14 is quite low.
  • FIG. 2 shows the position obtained for the various elements when the plate 29 has come to bear on the lower stop 30: the rods 15, 19 and 20 of the three jacks 8, 21 and 22 are retracted as much as possible, that is to say -to say that the support discs 17 and 18 have returned to the housings 27 and 28, while the support disc 16 is resting on the upper face, then slightly retracted, of the piston 9.
  • the centering tube 40 is, at this stage, entered to the bottom of the pre-drawn 7.
  • the plate 29 can no longer descend.
  • the sole 1 pushes the rod 39 into the body of the jack 36, while the punch 3 penetrates, as shown in FIG. 3, into the die 5 by drawing of the part 7, which it shrinks in diameter and increases in length.
  • the piston 9 of the cylinder 8 is pressed down, and it follows the downward movement of the punch 3.
  • the position of Figure 3 corresponds substantially to the bottom dead center of the slide.
  • the ascent phase of the slide is shown diagrammatically in FIG. 4.
  • the stampings 7 all grip the punches 3 very closely, so that the strip 6 rises with the punch 3, carrying with it the centralizing tubes 40 and therefore the rigid plate 29. The latter then comes to bear against its upper end-of-travel stops 31 (position in FIG. 4), which stops its ascent.
  • the tubes 40 act as extractors for the stampings 7, so that the punches come out of the stampings 7, while the support bars 17, 18 have returned to the high position.
  • the strip 6 is advanced one step in the longitudinal direction, so that we are finally brought back to the configuration of FIG. 1.
  • the invention is not limited to the embodiment which has just been described, this tool being on the contrary capable of being produced in many equivalent forms without departing from the scope of the claims.
  • the cylinders 36, 21 and 24 could be replaced by repulsion springs, and the springs 35 by one or more cylinders.

Claims (4)

1. Folgewerkzeug für eine Tiefziehpresse, das für jede einzelne Tiefziehstation (3, 5) einen vom am Schlitten der Presse fixierten Oberteil (1) des Werkeugs gehaltenen Stempel (3) und außerdem ein am Tisch der Presse fixiertes Unterteil (2) aufweist, das eine Platte (4) als Träger von Mätrizen (5) trägt, wobei jede vertikale Tiefziehöffnung (8) einen Kolben (9) enthält, der durch eine elastische Abstoßanordnung (8 bis 10) von unten nach oben schiebbar ist, dadurch gekennzeichnet, daß es mit zwei komplementären Mitteln versehen ist:
- Mitteln (16, 17, 18) zum Stützen des Metallbandes (6), von denen erste (16) unter dem Boden jedes Vor-Tiefziehteils (7) angeordnet sind, wenn dieses sich in lotrechter Stellung zum Stempel (3) und zur Tiefziehöffnung (8) der zugehörigen Matrize (5) befindet, und von denen zweite (17, 18) beiderseits dieses Vor-Tiefziehteils (7) angeordnet sind, wobei diese Mittel (16, 17, 18) schwach elastisch von unten nach oben gedrückt werden und durch einen darauf von oben nach unten ausgeübten Druck vertikal absenkbar sind und
- Mitteln (40) zur vertikalen Auflage auf das Band (6) zur Zentrierung des Vor-Tiefziehteils (7) und zur Extraktion den Tiefziehteile beim Anheben des Stempels (3), wobei diese Mittel durch eine frei zwischen zwei Anschlägen (30, 31) vertikal verschiebbare und dabei elastisch nach oben gedrückte starre horizontale Platte (29) gebildet werden, die zwischen dem genannten Metallband (6) und diesem Oberteil (1) angeordnet ist und ein zur vertikalen elastischen Abstützung gegen das Oberteil (1) dienendes Organ (36) trägt, das sehr stark von unten nach oben gedrückt wird, wobei die starre Platte (29) weiterhin für jede einzelne Tiefziehstation (3, 5) ein vertikales Zentrierrohr (40) aufweist, das nach unten weist und das dafür geeignet ist, als enge Gleitführung vom Stempel (3) bei dessen Absenkung durchfahren zu werden und in enge Einlange in dem genannten Vor-Tiefziehteil (7) zu gelangen, wenn sich diese starre Platte unter dem Druck des Oberteils (1) auf das vorstehend genannte, zur Abstützung dienende Organ (36) absenkt, und wobei dieses starre Platte (29) schließlich vertikale Vorsprünge (41, 42) aufweist, die nach unten gerichtet und dazu geeignet sind, in Anlage mit den genannten Mitteln (17, 18) zum Stützen des Bandes (6) zu gelangen, die beiderseits der Vor-Tiefziehteile (7) angeordnet sind.
2. Folgewerkzeug nach Anspruch 1, dadurch gekennzeichnet, daß der in der Tiefziehöffnung (8) angeordnete Körper des Kolbens (9) hohl ist und den Körper eines einfach wirkenden Zylinders bildet, der durch eine Öffnung (12) versorgt wird, die die Kammer (13) dieses Zylinders mit dem unter diesem Kolben angeordneten und mit unter Druck stehendem Fluid versorgten Raum (11) verbindet, wobei das freie Ende der Kolbenstange (15) dieses Zylinders die genannten ersten Mittel (16) zum Stützen trägt.
3. Folgewerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die genannten zweiten Mittel (17, 18) zum Halten durch horizontal und längs verlaufende Stege gebildet sind, die am freien Ende der vertikalen Kolbenstangen (19, 20) von Zylindern (21, 22) angeordnet sind, die im Körper des Unterteils (2) untergebracht sind.
4. Folgewerkzeug nach Anspruch 3, dadurch gekennzeichnet, daß die Platte (4) als Träger von Matrizen mit längs verlaufenden Ausnehmungen (27, 28) versehen ist, die zur Unterbringung der Stege (17, 18) geeignet sind, wenn sich diese in der unteren Position befinden.
EP88420426A 1988-01-04 1988-12-20 Folgewerkzeug für Tiefziehpresse Expired - Lifetime EP0323792B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88420426T ATE63845T1 (de) 1988-01-04 1988-12-20 Folgewerkzeug fuer tiefziehpresse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8800222A FR2625454A1 (fr) 1988-01-04 1988-01-04 Outil a suivre pour presse d'emboutissage
FR8800222 1988-01-04

Publications (2)

Publication Number Publication Date
EP0323792A1 EP0323792A1 (de) 1989-07-12
EP0323792B1 true EP0323792B1 (de) 1991-05-29

Family

ID=9362191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420426A Expired - Lifetime EP0323792B1 (de) 1988-01-04 1988-12-20 Folgewerkzeug für Tiefziehpresse

Country Status (7)

Country Link
US (1) US4914936A (de)
EP (1) EP0323792B1 (de)
AT (1) ATE63845T1 (de)
CA (1) CA1298521C (de)
DE (1) DE3863067D1 (de)
ES (1) ES2022693B3 (de)
FR (1) FR2625454A1 (de)

Cited By (1)

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CN108580632A (zh) * 2018-04-26 2018-09-28 山西长城电气股份有限公司 一种防爆电器的加工设备及其加工工艺

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US6925923B2 (en) * 2001-10-05 2005-08-09 Hycorr Machine Corporation Rotary cutting die mounting system
CN101947591B (zh) * 2010-08-27 2012-02-29 哈尔滨工业大学 利用取件托板快速取件的板材高温拉深成形方法
CN102151745A (zh) * 2011-02-23 2011-08-17 吴江市变压器厂有限公司 一种罩式夹件吊板冲裁模
JP6013937B2 (ja) * 2013-02-25 2016-10-25 富士重工業株式会社 プレス型のワーク剥離装置
CN103480744A (zh) * 2013-09-30 2014-01-01 大连益联金属成型有限公司 一种管夹二次成型模具
FR3018465B1 (fr) * 2014-03-11 2016-11-18 Peugeot Citroen Automobiles Sa Matrice avec ejecteur pour embouti avec gouttiere en bordure
DE102014223480A1 (de) * 2014-11-18 2016-05-19 Zf Friedrichshafen Ag Verfahren zur Herstellung eines hydraulischen Endanschlags eines Schwingungsdämpfers und Folgeverbundwerkzeug
CN105750412A (zh) * 2014-12-16 2016-07-13 天津市华美金属制品有限公司 一种扬声器导磁碗一次引深成型装置
CN105363923A (zh) * 2015-12-15 2016-03-02 中铁隆昌铁路器材有限公司 ω型弹条自动化生产最终成型工装
CN106825175A (zh) * 2016-12-08 2017-06-13 无锡市彩云机械设备有限公司 一种金属脚架冲压塑形装置
FR3084602B1 (fr) 2018-07-31 2020-07-17 Precitechnique Dauphine Outils d’une presse a emboutir et procede d’emboutissage mettant en œuvre de tels outils
CN110434242B (zh) * 2019-08-26 2020-10-09 苏州聚慧邦新材料科技有限公司 一种汽车外壳冲压设备
CN113369358B (zh) * 2021-08-16 2021-10-29 烟台佑利技术有限公司 一种薄壁型材冲压设备

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CH569528A5 (de) * 1973-09-19 1975-11-28 Km Engineering Ag
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GB2038690A (en) * 1978-11-20 1980-07-30 Mercer Nairne & Co Ltd Improved punch assembly
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Publication number Priority date Publication date Assignee Title
CN108580632A (zh) * 2018-04-26 2018-09-28 山西长城电气股份有限公司 一种防爆电器的加工设备及其加工工艺

Also Published As

Publication number Publication date
EP0323792A1 (de) 1989-07-12
DE3863067D1 (de) 1991-07-04
ES2022693B3 (es) 1991-12-01
FR2625454A1 (fr) 1989-07-07
ATE63845T1 (de) 1991-06-15
CA1298521C (fr) 1992-04-07
US4914936A (en) 1990-04-10

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