EP0224406A1 - Schwingungstisch, insbesondere verwendet in der Giesserei - Google Patents

Schwingungstisch, insbesondere verwendet in der Giesserei Download PDF

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Publication number
EP0224406A1
EP0224406A1 EP86402388A EP86402388A EP0224406A1 EP 0224406 A1 EP0224406 A1 EP 0224406A1 EP 86402388 A EP86402388 A EP 86402388A EP 86402388 A EP86402388 A EP 86402388A EP 0224406 A1 EP0224406 A1 EP 0224406A1
Authority
EP
European Patent Office
Prior art keywords
vibrators
vibrating table
frame
plate
foundry
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
EP86402388A
Other languages
English (en)
French (fr)
Other versions
EP0224406B1 (de
Inventor
Jean-Jacques Hanneton
Michel Sivori
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 SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of EP0224406A1 publication Critical patent/EP0224406A1/de
Application granted granted Critical
Publication of EP0224406B1 publication Critical patent/EP0224406B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/10—Compacting by jarring devices only

Definitions

  • the present invention relates to a vibrating table used in particular in foundries for obtaining rigid moldings by compacting sand.
  • the object of the invention is to avoid such risks by appropriate use of vibrations, while ensuring, in a suitable and simultaneous manner, the operations of filling and compacting the sand.
  • a vibrating table of the type comprising vibrators fixed to a frame, and a horizontal plate secured to this frame and isolated from the base thereof by shock absorbers.
  • this vibrating table includes two vibrators whose unbalance axes are arranged parallel to the vertical reference plane of the plate, which passes through the central axis thereof, and symmetrically to this central axis.
  • the offset of these unbalance axes relative to this vertical reference plane is used as an adjustment parameter for the tightening (rigidity of the mold) and the distribution (filling) of the sand, without any distortion of the model.
  • this vibrating table comprises two vibrators 1, 2 solidly fixed on a rigid frame 3.
  • a horizontal plate 4 secured to this frame is designed to receive a mold to be produced 5.
  • This plate is isolated from the frame 3 by shock absorbers 6 sufficiently dimensioned.
  • the vibrators 1, 2 are strictly situated at the same level defined by a horizontal plane H. They respectively have unbalance axes B, B '(FIG. 2) arranged parallel to the vertical reference plane P of the plate 4 which passes through the central axis X thereof, on the one hand, and symmetrically to this central axis, on the other hand.
  • the offset D of the axes of rotation of the unbalances becomes an adjustment parameter for the tightening and the distribution of the able, which is defined according to the part to be molded, just like the direction of rotation of the vibrators 1, 2.
  • the power of the corresponding motors is related to the load to be vibrated.
  • the support plate 4 of the mold 5 is equipped with a clamping device, not shown, the characteristics of which depend on the shape and dimensions of this mold.
  • the shock absorbers 6 can be mechanical (springs) or pneumatic (tires).
  • FIG. 1 In FIG. 1 are shown the centrifugal forces F which are exerted on the respective vibrators 1, 2 rotating in opposite directions with an average offset D.
  • centrifugal forces F are located in the vertical planes passing through the unbalance axes B, B ', parallel to the plane P.
  • the vertical components F "add up and determine a vertical vibrational amplitude.
  • Each horizontal component F ' breaks down into two other components Flet F 2 by projection onto the vertical plane V passing through the central axis X and the unbalance centers C, C' ( Figure 2).
  • the two components F 1 not contained in this plane V form a horizontal couple.
  • the vibrating table previously described thus makes it possible to adapt the vibration to the type of part to be produced, by varying only the offset D of the vibrators 1, 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
EP86402388A 1985-10-29 1986-10-24 Schwingungstisch, insbesondere verwendet in der Giesserei Expired EP0224406B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8516028 1985-10-29
FR8516028A FR2589093B1 (fr) 1985-10-29 1985-10-29 Table vibrante utilisee notamment en fonderie

Publications (2)

Publication Number Publication Date
EP0224406A1 true EP0224406A1 (de) 1987-06-03
EP0224406B1 EP0224406B1 (de) 1988-06-01

Family

ID=9324293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86402388A Expired EP0224406B1 (de) 1985-10-29 1986-10-24 Schwingungstisch, insbesondere verwendet in der Giesserei

Country Status (4)

Country Link
US (1) US4796685A (de)
EP (1) EP0224406B1 (de)
DE (1) DE3660234D1 (de)
FR (1) FR2589093B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5067549A (en) * 1989-12-04 1991-11-26 General Kinematics Corporation Compaction apparatus and process for compacting sand
US5606231A (en) * 1993-12-04 1997-02-25 Netter Gmbh Vibrating table for masses to be compacted and a vibratory method of compaction for the compaction of concrete
US6112596A (en) * 1999-03-02 2000-09-05 Qualmark Corporation Shaker table assembly for a test chamber
US6105433A (en) * 1999-03-02 2000-08-22 Qualmark Corporation Shaker table assembly for a reliability test chamber utilizing different types of vibrator assemblies
EP1741068B1 (de) * 2004-04-20 2009-05-20 Rampf Formen GmbH Vorrichtung zur überwachung und steuerung bzw. regelung einer maschine
CN102717034B (zh) * 2012-04-27 2014-10-29 安徽中兴华汉机械有限公司 一种振实台

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR967437A (fr) * 1948-06-08 1950-11-03 Vibro Betong Ab Dispositif vibrateur pour obtenir un effet vibratoire dirigé au moyen d'organes vibrateurs tournants
FR1291621A (fr) * 1961-03-14 1962-04-27 Dalaudiere Ets Perfectionnements apportés aux appareils vibrants
GB2088762A (en) * 1980-12-04 1982-06-16 Gen Kinematics Corp Vibratory method for packing foundry sand into a pattern prior to the pouring of molten metal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274660A (en) * 1960-10-17 1966-09-27 Builders Equip Co Slump block producing machine
US3767168A (en) * 1970-05-18 1973-10-23 Nat Foundry Equipment Co Inc Mechanical agitation apparatus
US4340469A (en) * 1981-01-23 1982-07-20 Spokane Crusher Mfg. Co. Vibratory screen apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR967437A (fr) * 1948-06-08 1950-11-03 Vibro Betong Ab Dispositif vibrateur pour obtenir un effet vibratoire dirigé au moyen d'organes vibrateurs tournants
FR1291621A (fr) * 1961-03-14 1962-04-27 Dalaudiere Ets Perfectionnements apportés aux appareils vibrants
GB2088762A (en) * 1980-12-04 1982-06-16 Gen Kinematics Corp Vibratory method for packing foundry sand into a pattern prior to the pouring of molten metal

Also Published As

Publication number Publication date
EP0224406B1 (de) 1988-06-01
FR2589093B1 (fr) 1987-12-11
US4796685A (en) 1989-01-10
DE3660234D1 (en) 1988-07-07
FR2589093A1 (fr) 1987-04-30

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