EP0497650A1 - Vorrichtung und Verfahren zur Herstellung von granuliertem Material - Google Patents

Vorrichtung und Verfahren zur Herstellung von granuliertem Material Download PDF

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Publication number
EP0497650A1
EP0497650A1 EP92400134A EP92400134A EP0497650A1 EP 0497650 A1 EP0497650 A1 EP 0497650A1 EP 92400134 A EP92400134 A EP 92400134A EP 92400134 A EP92400134 A EP 92400134A EP 0497650 A1 EP0497650 A1 EP 0497650A1
Authority
EP
European Patent Office
Prior art keywords
frame
boxes
box
vibrating table
compartments
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
Application number
EP92400134A
Other languages
English (en)
French (fr)
Other versions
EP0497650B1 (de
Inventor
Jean-Jacques Mazeran
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.)
MAZERAN JEAN JACQUES
Original Assignee
MAZERAN JEAN JACQUES
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 MAZERAN JEAN JACQUES filed Critical MAZERAN JEAN JACQUES
Publication of EP0497650A1 publication Critical patent/EP0497650A1/de
Application granted granted Critical
Publication of EP0497650B1 publication Critical patent/EP0497650B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/03—Sand moulds or like moulds for shaped castings formed by vacuum-sealed moulding

Definitions

  • the present invention relates to a device and a method for continuously manufacturing foundry molds of granular material.
  • French patent application No. 2,307,596 describes a frame of foundry molds, in which there is provided a means for introducing and recovering the granular material used.
  • This means consists of a volume of substantially frustoconical shape, the small base of which is provided with a hatch through which the filling tube can be introduced; this hatch is airtight and remains closed throughout the period of use of the chassis. After molding, the vacuum is broken, the chassis being turned over, and the hatch opens, letting the material flow by gravity.
  • Such a device and such a method confer, on molding, only slow rates, because it is necessary to carry out numerous handling operations. Furthermore, the casting is carried out with the mold held in the assembly of the two chassis, which immobilizes two expensive chassis for obtaining a single mold. Similarly, it is necessary to carry out the shaping operation twice to obtain the upper and lower parts of the mold, this double operation leading to obtaining a complete mold.
  • the device in question is distinguished from the similar ones by the fact that it consists of at least two model plates, placed in the corresponding housings of a support, and at least one sealing plate and a frame comprising two faces.
  • the model plate support elements and the sealing plates are hinged together.
  • the polymer sheet is unique and corresponds to the surface of the sealing plates and the model plates.
  • the process essentially consists of preparing the model plates in the support, placing on them a polymeric envelope by thermoforming and aspiration through the plates, placing the model plates around of a reinforcement comprising, at most, three faces, to ensure the seal between the polymer envelope and the reinforcement, by clamping the film between reinforcement and plates, or by plating thereof on the reinforcement by inflation d '' a joint, to ensure the filling with granular material, to assemble, by welding, the ends of said envelope, over the upper frame, to evacuate the space delimited by the polymer envelope through of the frame, to remove the plates and to assemble the clods thus obtained, for the creation of imprints.
  • This process and this device make it possible to obtain movements with reduced handling.
  • only the reinforcement and the polymer envelope are used at the casting station and the reinforcement is much simpler than the chassis used previously, hence a fairly reduced investment.
  • a single operation makes it possible to obtain the two parts of a mold, which therefore improves the yield by almost 50%.
  • the process is semi-continuous, but the casting can be continuous, by juxtaposing the lumps. The number of parts required is reduced, as is the volume of granular material used.
  • the device and the method according to the invention aim to remedy these drawbacks by proposing a support for model plates with sliding and pivoting boxes, connected to a vacuum source, capable of pressing against the frame, after interposition of a polymer film, with plating, in superposition, of the upper ends thereof against the top of the frame, under the effect of pressure and vacuum.
  • the device according to the invention is characterized mainly by the fact that the support for model plates consists mainly of two boxes, with two compartments, each connected to a vacuum source capable of sliding and pivoting. 'towards each other, relative to a frame surrounding a vibrating table on which is placed a three-sided frame, connected to the vacuum source.
  • each box is made to the dimensions of a model plate, which ensures closing by embedding in a rebate provided for this purpose in the edge of the opening of said box.
  • each box is completely closed and has, in its wall located in the extension of the model plate, air passage holes.
  • the width of the small compartment is determined according to that of the frame and corresponds to approximately 2/3 of it.
  • the boxes slide and pivot by means of two pins, arranged laterally in the median plane of each box, and of lights, forming slides, arranged at the upper part of the frame.
  • the frame is formed of the three faces of a rectangular parallelogram, the upper face of which is absent, the vertical faces of which, connected by a hollow central rib covered with a microperforated filter, each comprise, in addition to a filtering device, a mouthpiece vacuum, equipped with a non-return valve, a handling pin, a support shoe, for clamping on the vibrating table, and a machined surface, intended to serve as a geometric reference for the molded parts.
  • the figures represent a device for continuously manufacturing foundry molds in granular material, according to the invention, comprising a frame 10 with lights 11 , supporting, by means of pins 31 , 41 , boxes 30 and 40 at large compartments 32 , 42 with rebates 321 , 421 , in which the model plates 50 , 60 fit, and with small compartments 33 , 43 with suction orifices 331 , 431 ; said boxes being connected to a vacuum source, respectively, by flexible pipes 322 , 422 and 332 , 432 central, by solenoid valves 323 , 423 , 333 , 433 ; the assembly being arranged around a frame 70 with sides 71 , 72 , 73 , connected by a hollow rib 74 with a microperforated filter 741 , placed in communication with the vacuum source by means of a nozzle 75 , provided with trunnions handling 76 , support shoes 77 and a machined surface 78 .
  • pins 31 and 41 on the sides of the boxes 30 and 40 and the introduction of these into the slots 11 of the frame 10 allow, as shown in FIGS. 2 to 4, easy tilting and sliding of the boxes 30 and 40 supporting the model plates 50 and 60 , which allow their approximation or their spacing relative to the frame 70 resting, by its base 73 , on the vibrating table 80 .
  • the ends 911 and 921 of the polymer films can be folded over the upper part 101 of the clod 100 made of granular material, with superimposition of the edges before application of the vacuum in the hollow rib 74 of the frame by means of the end pieces 75 , and after the vibrating table has been put into operation, following the filling of the gap between model plates with granular material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Mold Materials And Core Materials (AREA)
EP92400134A 1991-02-01 1992-01-20 Vorrichtung und Verfahren zur Herstellung von granuliertem Material Expired - Lifetime EP0497650B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9101180 1991-02-01
FR9101180A FR2672233B1 (fr) 1991-02-01 1991-02-01 Dispositif et procede de fabrication de moules de fonderie en materiau granulaire.

Publications (2)

Publication Number Publication Date
EP0497650A1 true EP0497650A1 (de) 1992-08-05
EP0497650B1 EP0497650B1 (de) 1994-07-27

Family

ID=9409295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92400134A Expired - Lifetime EP0497650B1 (de) 1991-02-01 1992-01-20 Vorrichtung und Verfahren zur Herstellung von granuliertem Material

Country Status (7)

Country Link
US (1) US5219014A (de)
EP (1) EP0497650B1 (de)
JP (1) JP2740702B2 (de)
AT (1) ATE109045T1 (de)
DE (1) DE69200262T2 (de)
ES (1) ES2061318T3 (de)
FR (1) FR2672233B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2741520A1 (fr) * 1995-11-27 1997-05-30 Podia France Sarl Appareil d'empreintes plantaires, vibrant, a masses granuleuses
CN102009135A (zh) * 2010-12-01 2011-04-13 张和啟 一种双桥汽车平衡悬架支座真空负压成型方法
CN102009136A (zh) * 2010-12-01 2011-04-13 张和啟 一种双桥汽车平衡悬架板簧座真空负压成型方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2307596A1 (fr) * 1975-04-14 1976-11-12 Wagner Maschf Heinrich Chassis de moules de fonderie reunis par depression
DE2352492B2 (de) * 1973-10-19 1977-08-25 Wittmoser, Adalbert, Prof Dr-Ing, 6840 Lampertheim Verfahren zur herstellung von durch unterdruck stabilisierten, hohlen giessformen
EP0126269A2 (de) * 1983-05-18 1984-11-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Verfahren und Vorrichtung zum Herstellen von Giessformen
FR2618358A1 (fr) * 1987-07-22 1989-01-27 Mazeran Jean Jacques Procede et dispositif de fabrication de moules a partir de materiau granulaire

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2305229C3 (de) * 1972-02-04 1975-04-17 Sintokogio, Ltd., Nagoya, Aichi (Japan) Formkasten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2352492B2 (de) * 1973-10-19 1977-08-25 Wittmoser, Adalbert, Prof Dr-Ing, 6840 Lampertheim Verfahren zur herstellung von durch unterdruck stabilisierten, hohlen giessformen
FR2307596A1 (fr) * 1975-04-14 1976-11-12 Wagner Maschf Heinrich Chassis de moules de fonderie reunis par depression
EP0126269A2 (de) * 1983-05-18 1984-11-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Verfahren und Vorrichtung zum Herstellen von Giessformen
FR2618358A1 (fr) * 1987-07-22 1989-01-27 Mazeran Jean Jacques Procede et dispositif de fabrication de moules a partir de materiau granulaire

Also Published As

Publication number Publication date
DE69200262T2 (de) 1995-03-09
ATE109045T1 (de) 1994-08-15
DE69200262D1 (de) 1994-09-01
EP0497650B1 (de) 1994-07-27
FR2672233A1 (fr) 1992-08-07
JP2740702B2 (ja) 1998-04-15
JPH04313444A (ja) 1992-11-05
FR2672233B1 (fr) 1993-05-07
ES2061318T3 (es) 1994-12-01
US5219014A (en) 1993-06-15

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