EP0026702B1 - Bâti de presse pour coquilles dans le moulage à basse pression - Google Patents

Bâti de presse pour coquilles dans le moulage à basse pression Download PDF

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Publication number
EP0026702B1
EP0026702B1 EP80401347A EP80401347A EP0026702B1 EP 0026702 B1 EP0026702 B1 EP 0026702B1 EP 80401347 A EP80401347 A EP 80401347A EP 80401347 A EP80401347 A EP 80401347A EP 0026702 B1 EP0026702 B1 EP 0026702B1
Authority
EP
European Patent Office
Prior art keywords
frame
plate
press
jack
casting mold
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
Application number
EP80401347A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0026702A1 (fr
Inventor
Pierre Chatourel
Bernard Poisson
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.)
Renault SA
Original Assignee
Regie Nationale des Usines Renault
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 Regie Nationale des Usines Renault filed Critical Regie Nationale des Usines Renault
Priority to AT80401347T priority Critical patent/ATE2202T1/de
Publication of EP0026702A1 publication Critical patent/EP0026702A1/fr
Application granted granted Critical
Publication of EP0026702B1 publication Critical patent/EP0026702B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould

Definitions

  • Low pressure shell molding is generally practiced using a crucible in which the metal is kept in the liquid state and from where it is directed, by pressure to the surface of the metal, in a mold by means of a transfer tube.
  • the mold is held by a press, the plates of which each have a mold element.
  • These presses are generally constituted by a frame provided with columns for fixing the tools. These columns hinder access to the machines for tool loading and for extracting parts in operation by automatic extraction arms.
  • the subject of the invention is a press structure in the form of a double gantry supporting the upper and lower press plates in its central part free of any column and leaving free access to the machine by two opposite faces.
  • the feet of the gantries thus separated from the work area are used to receive the pivot axes of extractor arms with large travel, which allows the control and evacuation points of the parts to be spread, leaving the surroundings free and, d 'on the other hand, to receive the devices for placing or removing heavy tools, which facilitates and accelerates changes in manufacturing.
  • the press for casting molds according to the invention consists of a metal structure which, when viewed from above, has a general H shape, and is made up in elevation of two parallel gantries between and in the middle of which the upper plates are mounted. and lower of the press.
  • this structure comprises a base 1 formed of side members 2 extending under the gantries and joined together by cross members 3 supporting the cradle of the lower plate 4. At the ends of the side members stand the uprights 5 of the gantries joined two by two to an upper part by the horizontal arms 6. These in turn receive in their central part crosspieces 7 on which the upper plate 8 is mounted.
  • This plate is maneuvered by a jack 9 supported by the crosspieces 7 by means of columns 10, and it is held by vertical guides 11.
  • the jack 9 and the guides 11 are preferably approximately in the same vertical plane, which makes the relatively floating plate and ensures good closing plating of the two parts of the tool, one against the hearth, which reduces burrs at the joint plane and which, in the event of foreign bodies on this joint plane and annoying closing, avoids subjecting the tool and its guide members to significant stresses.
  • the lower plate 4 is received by a cradle 4 '. It includes ejectors 19 operated by a pneumatic cylinder 13 with very flat bellows 18, 18 ′ and with a large thrust surface, which makes it possible to remove the foundations.
  • the cylinder 13 is mounted on transverse irons of the machine base 20 by its base 21.
  • the latter receives by a vertical axis 22 an upper plate 23 forming a frame for an intermediate plate 24 sliding on this axis .
  • the base 21 and the intermediate plate define, with a bellows membrane 18, a variable volume chamber 25 of thrust for the ejectors 19 carried by the intermediate plate, while by its other face, the intermediate plate delimits with the upper plate and a bellows membrane 18 'a variable volume chamber 26 for retaining and returning.
  • Suitable conduits such as 27, 28 allow the elimination or the departure of pressurized air in the bellows chambers.
  • these uprights 5 can then be used to receive the pivot axes 14 of arms extractors 15 with large clearance coming to deposit the parts on evacuation pallets 16, which makes it possible to separate the control and evacuation points.
  • the uprights can also be used to support the lifting means (not shown) for the evacuation and installation of heavy tools, which facilitates and accelerates tool changes. These can be moved laterally on a roller conveyor as shown in diagram 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Casting Devices For Molds (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Ceramic Products (AREA)
  • Motor Or Generator Frames (AREA)
EP80401347A 1979-10-01 1980-09-19 Bâti de presse pour coquilles dans le moulage à basse pression Expired EP0026702B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80401347T ATE2202T1 (de) 1979-10-01 1980-09-19 Rahmengestell fuer kokillen im niederdruckgussverfahren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7924451 1979-10-01
FR7924451A FR2466294A1 (fr) 1979-10-01 1979-10-01 Presse pour moule de coulee basse pression

Publications (2)

Publication Number Publication Date
EP0026702A1 EP0026702A1 (fr) 1981-04-08
EP0026702B1 true EP0026702B1 (fr) 1983-01-12

Family

ID=9230192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401347A Expired EP0026702B1 (fr) 1979-10-01 1980-09-19 Bâti de presse pour coquilles dans le moulage à basse pression

Country Status (7)

Country Link
EP (1) EP0026702B1 (enrdf_load_stackoverflow)
JP (1) JPS5656769A (enrdf_load_stackoverflow)
AT (1) ATE2202T1 (enrdf_load_stackoverflow)
DE (1) DE3061635D1 (enrdf_load_stackoverflow)
ES (1) ES8106426A1 (enrdf_load_stackoverflow)
FR (1) FR2466294A1 (enrdf_load_stackoverflow)
PT (1) PT71855B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480827A (zh) * 2012-12-20 2014-01-01 江苏凯特汽车部件有限公司 一种汽车铝合金车轮制造低压铸造机接料盘装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1500877A (fr) * 1966-06-24 1967-11-10 Michelin & Cie Perfectionnements à la fabrication de pièces métalliques par moulage
FR2137180B1 (enrdf_load_stackoverflow) * 1971-05-14 1975-01-17 Honsel Werke Ag
FR2114977A1 (en) * 1971-06-07 1972-07-07 Voisin Ets Gravity casting machine - with moveable head upper section pivoting about a vertical axis

Also Published As

Publication number Publication date
PT71855B (fr) 1981-06-30
ES495483A0 (es) 1981-07-01
ES8106426A1 (es) 1981-07-01
FR2466294B1 (enrdf_load_stackoverflow) 1981-10-30
JPS5656769A (en) 1981-05-18
EP0026702A1 (fr) 1981-04-08
DE3061635D1 (en) 1983-02-17
PT71855A (fr) 1980-10-01
ATE2202T1 (de) 1983-01-15
FR2466294A1 (fr) 1981-04-10

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