EP0240425B1 - Verfahren und Vorrichtung zum Mitteilen von Mehrrichtungsschwingungen an eine federnd gestützte Auflage - Google Patents

Verfahren und Vorrichtung zum Mitteilen von Mehrrichtungsschwingungen an eine federnd gestützte Auflage Download PDF

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Publication number
EP0240425B1
EP0240425B1 EP87400703A EP87400703A EP0240425B1 EP 0240425 B1 EP0240425 B1 EP 0240425B1 EP 87400703 A EP87400703 A EP 87400703A EP 87400703 A EP87400703 A EP 87400703A EP 0240425 B1 EP0240425 B1 EP 0240425B1
Authority
EP
European Patent Office
Prior art keywords
vibrations
support
rotation
unidirectional
resilient support
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
EP87400703A
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English (en)
French (fr)
Other versions
EP0240425A1 (de
Inventor
Roger Brigolle
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.)
Societe Anonime des Machines Osborn SA
Original Assignee
Societe Anonime des Machines Osborn SA
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Filing date
Publication date
Application filed by Societe Anonime des Machines Osborn SA filed Critical Societe Anonime des Machines Osborn SA
Publication of EP0240425A1 publication Critical patent/EP0240425A1/de
Application granted granted Critical
Publication of EP0240425B1 publication Critical patent/EP0240425B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18544—Rotary to gyratory

Definitions

  • the invention relates to a method for applying multidirectional vibrations to an elastic support as well as the apparatus designed for implementing this method.
  • Unidirectional vibration generators are known which are designed to apply unidirectional vibrations to an elastic support.
  • Unidirectional vibration generators are known in particular which comprise an eccentric which cooperates with the vibrated elastic mass.
  • multidirectional vibrations must be applied to the support to be vibrated. This is particularly the case in foundries, during sand molding operations where the latter is vibrated to be compacted on the model, when the molding must be of high quality, that is to say when the footprint left in the sand by the model must be very precise.
  • the unidirectional vibrations generally applied to the sand are then not sufficient to ensure effective clamping of the latter on the model according to the different orientations of the faces thereof.
  • the object of the present invention is to remedy this drawback and it provides a method making it possible, from a source of unidirectional vibrations, to apply to an elastic support vibrations which are oriented in multiple directions, as well as an apparatus ensuring the implementation of this process.
  • the source of unidirectional vibrations is given a rotational movement in a plane parallel to that of the elastic support, thereby varying the direction of the vibrations applied to said support.
  • the apparatus for implementing the method comprises a source of unidirectional vibrations cooperating with the elastic support and means which ensure the rotation of the unidirectional vibration generator in a plane parallel to that of the elastic support.
  • GB-A 2,091,377 describes a different vibrating device.
  • the support rotates and is not an elastic support.
  • the vibration generator is in contact with this support by rollers and is fixed in rotation.
  • a generator of the eccentric type is used. which attacks at a determined angle a spherical part mounted in free rotation on the underside of the vibrating table.
  • the vibrating table is fixed in rotation, while the vibration generator is mounted on a support plate designed to rotate around a vertical axis passing through the center of gravity of the table.
  • the molding table receives vibrations oriented in all directions so that the friction of the molding sand particles in the rest state carried by the table is decreased, the evacuation of the air is improved and the sand particles, whatever their shapes, are stored in the smallest volume and become embedded in each other.
  • the compaction thus carried out also makes it possible to obtain better rigidity of the mold.
  • An adjustment in operation of the vibration frequency can be obtained by associating a speed variator with the drive motor of the eccentric of the generator, and an adjustment in operation of the amplitude of the vibrations can be obtained by mounting the eccentric of vibration on a second eccentric relative to which it can rotate, on command, the desired angle to vary the eccentricity of the driving eccentric.
  • Such a variation in amplitude in operation is particularly advantageous for application to molding lines where the molds to vibrate follow one another at regular intervals on the vibrating table.
  • a frame resting on the ground and which supports at its upper part, by means of four vibration springs 2 of vertical axis, a horizontal plate 3 constituting a molding table.
  • the frame 1 carries, by means of a support 4, a horizontal plate 5 which rests on the support 4 by means of rollers 6.
  • the plate 5 is secured to a shaft vertical 7 arranged inside a housing 8 and driven in rotation by a motor 9.
  • the horizontal plate 5 is integral at its front and rear ends with trapezoidal vertical walls 10 each having at its upper end a bearing 12 opposite which is disposed a bearing 13 secured to the upper end of cha that end wall 14 of a cradle 15, articulated to the walls of the plate 5 by horizontal axes 16 passing through the bearings 12, 13.
  • the cradle 15 carries a unidirectional vibration generator as described in FR-A 2 367 542, c ' that is to say comprising a vibration eccentric 17 driven in rotation by a motor 18 and a belt 19 and engaging a spherical element 20 mounted in free rotation on the underside of the molding table 3 in the vicinity of the center of gravity of that -this.
  • the cradle 15 is secured, by its underside, to a rack 21 in the form of an arc of a circle, designed to mesh with a pinion 22 mounted to rotate on a yoke 23 carried by the plate 5.
  • a geared motor group 24 also carried by the plate 5, is designed to drive the pinion 22 in rotation by means of a belt 25.
  • the latter In order to allow adjustment in operation of the amplitude of the vibrations provided by the eccentric 17 the latter, in the manner known by FR-A 2 367 542, is mounted on a control shaft 26 by means of a inner eccentric forming hub.
  • a differential pulley 28 is mounted on the shaft 26 and drives, by a pinion fixed to the planet gear cage, a ring gear carried by the eccentric 17.
  • a stepping brake motor 29 controls the differential pulley to add or subtract a rotational movement chosen at the eccentric 17 in order to offset it relative to the hub 27 by varying the eccentricity.
  • the gear motor 24 is actuated to adjust the angle of attack of the spherical rotating part 20, then the internal eccentric 27 is adjusted so as to cancel the eccentricity of the eccentric of vibration 17.
  • the eccentric 17 is rotated at a speed designed to produce a vibration frequency close to the natural frequency of the table to be vibrated, then by action on the stepping motor step 29, unidirectional vibrations are applied to table 3 by passing the amplitude of these vibrations from zero to the desired value.
  • the rotation of the plate 5 is then produced around the vertical axis XX while ensuring the attack of the spherical part 20 by the eccentric 17 in multiple directions thereby communicating to the molding table 3 the multidirectional vibrations desired.
  • the vibration period of the mold placed on the table 3 is completed, bring back at zero the amplitude of the vibrations by controlling the stepping motor 29 without modifying the operation of the other elements of the device, replace on the table 3 once again immobile the mold vibrated by a new mold, then gradually reduce the amplitude of the vibrations to the desired value without having to restart the various rotating members.
  • the spherical element 20 carried by the underside of the molding table 3 could be fixed and cooperate with the eccentric 17 by means of a needle bearing (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (5)

1. Verfahren zum Aufbringen von in mehrere Richtungen wirkenden Schwingungen auf einen elastischen Träger, nach dem dem genannten Träger in eine Richtung wirkende Schwingungen von einer in eine Richtung wirkenden Schwingungsquelle mitgeteilt werden, dadurch gekennzeichnet, daß gleichzeitig die Quelle der in eine Richtung wirkenden Schwingungen eine Drehbewegung in einer Ebene parallel zu der des genannten Trägers erhält, der in Drehung fest ist.
2. Vorrichtung für die Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß sie einen Erzeuger von in eine Richtung wirkenden Schwingungen, ein mit dem zu rüttelnden Träger verbundenes Organ zum Zusammenwirken mit dem aktiven Teil des Schwingungserzeugers sowie Mittel umfaßt, die eine Drehung des Schwingungserzeugers in einer Ebene parallel zu der des elastischen Trägers herbeiführen, der in Drehung fest ist.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der elastische Träger (3) in Drehung fest ist, während der Schwingungserzeuger von einem Teller (5) getragen wird, der parallel zum genannten elastischen Träger (3) ist und um eine zu ihm senkrechte Achse in Drehung gesetzt wird.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Erzeuger der in eine Richtung wirkenden Schwingungen einen Schwingungsexzenter (17) umfaßt, der in Drehung gesetzt wird und mit einem Umdrehungsorgan (20) in Kugelform zusammenwirkt, das an der Innenfläche des in Drehung festen elastischen Trägers (3) befestigt ist.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Erzeuger der in eine Richtung wirkenden Schwingungen an seinem drehenden Tragteller über Mittel aufgehängt ist, die eine Veränderung seiner Neigung in einer Ebene senkrecht zum elastischen Träger (3) und mithin eine Veränderung des Angriffswinkels der Schwingungen ermöglichen.
EP87400703A 1986-04-02 1987-03-31 Verfahren und Vorrichtung zum Mitteilen von Mehrrichtungsschwingungen an eine federnd gestützte Auflage Expired - Lifetime EP0240425B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8604681A FR2596677B1 (fr) 1986-04-02 1986-04-02 Procede pour l'application de vibrations multidirectionnelles a un support elastique, et appareillage pour la mise en oeuvre de ce procede
FR8604681 1986-04-02

Publications (2)

Publication Number Publication Date
EP0240425A1 EP0240425A1 (de) 1987-10-07
EP0240425B1 true EP0240425B1 (de) 1990-09-05

Family

ID=9333792

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400703A Expired - Lifetime EP0240425B1 (de) 1986-04-02 1987-03-31 Verfahren und Vorrichtung zum Mitteilen von Mehrrichtungsschwingungen an eine federnd gestützte Auflage

Country Status (5)

Country Link
US (1) US4929087A (de)
EP (1) EP0240425B1 (de)
DE (1) DE3764688D1 (de)
ES (1) ES2018278B3 (de)
FR (1) FR2596677B1 (de)

Families Citing this family (12)

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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
US5172599A (en) * 1991-05-15 1992-12-22 Woltering Howard M Vibratory device
DE9307761U1 (de) * 1993-05-22 1993-08-19 Kuston (Deutschland) GmbH, 47533 Kleve Mischer mit einem Schwingantrieb
DE9312016U1 (de) * 1993-08-12 1993-10-21 Berger, Hans-Werner, 22941 Jersbek Vorrichtung zum Mischen, Schütteln, Rühren und/oder Emulgieren von Flüssigkeiten
US12515838B2 (en) 2020-10-01 2026-01-06 Stock America Llc Retort system and process
US5988869A (en) * 1998-07-29 1999-11-23 Pharmacopeia, Inc. Agitator for orbital agitation
WO2004012798A1 (en) * 2002-08-05 2004-02-12 Integrated Biosystems, Inc. Systems and methods for thawing, mixing, and processing biopharmaceutical materials
DE102005009095A1 (de) * 2005-02-22 2006-08-31 Institut für Fertigteiltechnik und Fertigbau Weimar e.V. Vibrationstisch zur Erzeugung von dreidimensionalen Schwingungen
US20070258850A1 (en) * 2006-05-08 2007-11-08 Miller Leonce J Iii Heat Transfer System for Retorts and Method Therefore
US8394335B2 (en) * 2009-03-06 2013-03-12 Allpax Products Llc Drive train for agitation of products in batch retorts and related retort system
WO2013022815A1 (en) 2011-08-10 2013-02-14 Allpax Products Llc Retort with progressive latch, roller support arrangement and method and system for reciprocation of loads
CN102529505B (zh) * 2011-12-29 2014-05-07 贝发集团股份有限公司 一种用于实现颗粒状饰物均匀灌装的振动机

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE537866C (de) * 1931-11-07 Erwin Neumann Dr Ing Ruettelmaschine
DE208369C (de) *
US639404A (en) * 1899-03-02 1899-12-19 Herman Kolls Machine for shaking babcock milk-test bottles.
US949709A (en) * 1910-01-13 1910-02-15 Jesse A Milligan Ore-separator.
US1100852A (en) * 1913-03-24 1914-06-23 Herwarth Thieme Barrel-shaker.
US1437880A (en) * 1922-05-17 1922-12-05 Joseph Baker Sons & Perkins Machine for use in the manufacture of confectionery
US1518236A (en) * 1922-08-31 1924-12-09 Millard F Hatch Vibratile screen
US2086241A (en) * 1936-02-15 1937-07-06 William A Schaerr Laboratory shaker
US2486030A (en) * 1943-12-21 1949-10-25 Delwin V James Turning device
US2755173A (en) * 1953-12-01 1956-07-17 Vernon W Shore Apparatus for effecting tests for pullorum and the like
US3735962A (en) * 1971-11-23 1973-05-29 Raymond Lee Organization Inc Automatic jar shaker
FR2326242A1 (fr) * 1975-10-01 1977-04-29 Bertrand Olivier Generateur de vibrations a amplitudes et frequences et angles de travail reglables en cours de fonctionnement
FR2367542A1 (fr) * 1976-10-12 1978-05-12 Brigolle Roger Generateur de vibrations, du
AT353726B (de) * 1977-11-28 1979-11-26 Gradwohl Adolf Vorrichtung zum entwaessern von festgut, insbesondere sand
GB2091377B (en) * 1981-01-20 1984-06-13 Ortner A Gmbh Apparatus for draining compact materials

Also Published As

Publication number Publication date
FR2596677A1 (fr) 1987-10-09
DE3764688D1 (de) 1990-10-11
EP0240425A1 (de) 1987-10-07
ES2018278B3 (es) 1991-04-01
FR2596677B1 (fr) 1990-04-27
US4929087A (en) 1990-05-29

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