EP0652063A1 - Vorrichtung zum Entkernen von Gussstücken - Google Patents

Vorrichtung zum Entkernen von Gussstücken Download PDF

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Publication number
EP0652063A1
EP0652063A1 EP94402482A EP94402482A EP0652063A1 EP 0652063 A1 EP0652063 A1 EP 0652063A1 EP 94402482 A EP94402482 A EP 94402482A EP 94402482 A EP94402482 A EP 94402482A EP 0652063 A1 EP0652063 A1 EP 0652063A1
Authority
EP
European Patent Office
Prior art keywords
chassis
fixed
clamping
vertical
axis
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
EP94402482A
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English (en)
French (fr)
Other versions
EP0652063B1 (de
Inventor
Daniel Fallet
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.)
MASSIN SA
Original Assignee
Dimafond Distribution et Ingenierie de Materiel pour la Fonderie
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 Dimafond Distribution et Ingenierie de Materiel pour la Fonderie filed Critical Dimafond Distribution et Ingenierie de Materiel pour la Fonderie
Publication of EP0652063A1 publication Critical patent/EP0652063A1/de
Application granted granted Critical
Publication of EP0652063B1 publication Critical patent/EP0652063B1/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
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores
    • B22D29/005—Removing cores by vibrating or hammering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B22D31/002—Cleaning, working on castings

Definitions

  • the present invention relates to an improved device for cleaning the cores for casting casting parts.
  • the hollow parts of a casting are usually molded around sand cores of shapes complementary to those of the hollow parts.
  • the devices proposed are either complex and fragile, or do not give complete satisfaction and leave behind fragments of cores bonded to the foundry parts.
  • the object of the invention is to propose a simple and effective cleaning device, making it possible to obtain complete elimination of the casting cores, even in the case of a casting piece of complex shape such as a cylinder head of a combustion engine. internal.
  • the subject of the invention is a device for cleaning the cores from the casting of pieces of foundry, characterized in that it comprises a rigid chassis having a vertical axis of symmetry forming a virtual axis of oscillation of the chassis, defined by the intersection of the vertical median longitudinal and transverse planes of the chassis, this chassis being hung on a support fixed by elastically deformable connecting means, the cleaning device further comprising two devices for clamping pieces to be cleaned carried by two opposite ends of the chassis while being aligned in the median longitudinal plane, and two unbalance motors fixed on two opposite sides of the chassis, having axes of rotation parallel to the axis of symmetry of the chassis and aligned with this axis of symmetry in the median transverse plane, the motors being intended, in operation, to oscillate the chassis around its virtual axis, so that the center of gravity of each part to be decribed describes a substantially horizontal trajectory and ellipsoidal.
  • FIGS. 1 to 3 show a device according to the invention, designated by the general reference 10, for cleaning the cores of foundry parts, such as cylinder heads for internal combustion engines.
  • the device 10 is intended to unclog two casting pieces at a time, only one of which is shown in FIG. 2 for reasons of clarity.
  • the casting shown in this figure is an engine cylinder head P fitted with casting weights m.
  • the cleaning device 10 is placed in an anti-noise box 11 provided with closable access openings, as shown in FIG. 1.
  • the device 10 comprises a rigid chassis 12, of generally elongated shape, having a vertical axis of symmetry X forming a virtual axis of oscillation of the chassis, as will be described in more detail later, defined by the intersection of the longitudinal vertical median planes L and transverse T of the chassis, these planes being shown in phantom in FIG. 2.
  • the chassis 12 is hung on a fixed support 14 by means of four cylindrical articulations 16, of known type, of vertical axes, elastically deformable transversely, arranged symmetrically two by two with respect to the longitudinal median longitudinal planes L and transverse T.
  • the chassis 12 is provided with a framework comprising three horizontal plates 18 superimposed, of identical general shapes, connected to each other by two longitudinal vertical webs 20 welded to the horizontal plates 18, a single web 20 being shown in FIG. 3.
  • the width of the horizontal plates 18 is smaller in their middle part than in their end parts, the latter parts comprising rectangular cutouts 22 open opposite the axis of symmetry X.
  • the cleaning device 10 further comprises two devices 24 for clamping pieces to be cleaned carried by two ends of the chassis 12 while being aligned in the median longitudinal plane L, and two unbalanced motors 26 of known type, conventionally fixed on the two opposite sides of the chassis delimited by the narrow median parts of the horizontal plates 18.
  • the axes of rotation R of these motors 26 are parallel to the axis of symmetry X of the chassis 12 and aligned with this axis of symmetry in the median transverse plane T.
  • Each clamping device 24 is arranged between two vertical end plates 28, 30, symmetrical with respect to the median longitudinal plane L, fixed on the opposite edges of the cutouts 22.
  • a first end plate 28 forms a fixed clamping jaw and a second end plate 30 forms a support for at least one pneumatic cylinder with chamber 32, of known type, for example sold under the name "PNEURIDE" by the company PARKER.
  • the pneumatic cylinder 32 is provided with a fixed end hooked on the support 30 and with a movable end carrying a plate 34 parallel to the two end plates 28,30, forming a movable clamping jaw.
  • the jaws 28, 34 therefore delimit vertical clamping faces opposite which a piece to be stripped P is maintained.
  • the fixed jaws 28, respectively the movable jaws 34, of the two clamping devices 24 are mounted in opposition to each other relative to the median longitudinal plane L.
  • each clamping device 24 comprises two pneumatic cylinders with chamber 32 carrying the movable jaw 34, aligned vertically.
  • the number of pneumatic cylinders used in a clamping device depends on the weight of the part to be cleaned.
  • Horizontal grids 36 are arranged between the lower end of the end plates 28, 30 of the clamping devices. These grids 36 form supports facilitating the establishment and removal of the parts to be cleaned and allow the flow by gravity of the fragments of casting cores which are detached from these parts.
  • the fixed jaw 28 of a clamping device is perforated by orifices 38 delimiting passages for known means for hammering the foundry piece P.
  • hammering means comprise for example a pneumatic hammer 40, as shown in FIG. 2, intended to strike a part of the part to be cleaned, arranged in line with the orifices 38, this part being constituted for example by the casting weights m integral with the foundry part.
  • a plate can be interposed between the weights m and the hammer 40, especially when these weights are relatively fragile.
  • each of the parts to be stripped P is clamped between the jaws 28, 34 of the corresponding clamping devices 24 by supplying compressed air to the pneumatic cylinders 32.
  • each part P is hammered by means of the pneumatic hammer 40, according to a known method.
  • the unbalance motors 26 are started so that they rotate in identical directions indicated by arrows in FIG. 2.
  • the rotation of the motors 26 has the effect of making the chassis 12 oscillate around its virtual axis X, by elastically deforming the articulations 16 substantially in a horizontal plane, so that the center of gravity of each piece to be racked P oscillates by describing a substantially horizontal and ellipsoidal trajectory, of major transverse axis with respect to the chassis 12.
  • the oscillations have the effect of completely disintegrating the casting cores without any fragment remaining in the hollows of the casting parts.
  • the power of the unbalance motors 26 is adapted so that the amplitude of the oscillations of the parts to be stripped, measured along the major axis of the ellipsoidal trajectory is between 12 and 16 mm approximately.
  • each unbalance motor has a power of approximately 5 kW
  • each pneumatic cylinder is supplied with compressed air having a pressure of approximately 2 to 5 bars, so as to be able to unclog castings of variable weights.
  • the amplitude of the oscillations of the center of gravity of the parts to be cleaned, measured along the long axis of the ellipsoidal trajectory, is approximately 14 mm, that is to say 7 mm on either side of the position of rest of the center of gravity, this for a frequency of 1,500 oscillations / min, that is to say 1,500 vibrations / min around the rest position of the center of gravity.
  • the amplitude and frequency of the oscillations of the parts to be cleaned can vary depending on the setting of the unbalance motors. Furthermore, the power of these motors is chosen according to the weight of the parts to be cleaned.
  • the invention has many advantages.
  • the device according to the invention makes it possible to unclog two casting parts at the same time by subjecting them to vibrations transmitted by the chassis which carries them, without using the conventional transmission means with connecting rods and cranks which are complex and fragile. Therefore, the cleaning device according to the invention is very robust and reliable.
  • the vibrations produced by the cleaning device according to the invention have amplitudes and frequencies greater than those obtained in conventional devices, making it possible to completely disintegrate the casting cores without leaving any fragments inside the casting parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Cleaning In General (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Vehicle Body Suspensions (AREA)
EP94402482A 1993-11-05 1994-11-03 Vorrichtung zum Entkernen von Gussstücken Expired - Lifetime EP0652063B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9313208A FR2711931B1 (fr) 1993-11-05 1993-11-05 Dispositif perfectionné de débourrage de noyaux de coulée de pièces de fonderie.
FR9313208 1993-11-05
US08/583,719 US5758713A (en) 1993-11-05 1996-01-05 Device for decoring cores of castings
CA002166836A CA2166836A1 (en) 1993-11-05 1996-01-09 Device for decoring cores of castings

Publications (2)

Publication Number Publication Date
EP0652063A1 true EP0652063A1 (de) 1995-05-10
EP0652063B1 EP0652063B1 (de) 1999-10-20

Family

ID=27170111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94402482A Expired - Lifetime EP0652063B1 (de) 1993-11-05 1994-11-03 Vorrichtung zum Entkernen von Gussstücken

Country Status (6)

Country Link
US (1) US5758713A (de)
EP (1) EP0652063B1 (de)
CA (1) CA2166836A1 (de)
DE (1) DE69421240T2 (de)
ES (1) ES2141809T3 (de)
FR (1) FR2711931B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1321209A2 (de) * 2001-12-18 2003-06-25 Global Foundry Systems S.r.l. Vorrichtung zum Entkernen von Gussstücken

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6644382B1 (en) * 1997-12-13 2003-11-11 Yoshitaka Aoyama Casting sand shake-out method and its apparatus
JP3236998B2 (ja) * 1999-04-17 2001-12-10 好高 青山 鋳物の砂落し装置
AT411971B (de) * 2002-07-26 2004-08-26 Wolfgang Ing Schneebauer Vorrichtung zum entkernen von gussstücken
FR2850305B1 (fr) * 2003-01-23 2005-03-18 Marcel Massin Systeme automatise de debourrage et dispositif de debourrage
US7695471B2 (en) * 2003-04-18 2010-04-13 The University Of Hong Kong Fixation device
CN100346906C (zh) * 2005-03-24 2007-11-07 北京铝镁泰和铸机设备科技有限公司 一种分段式凸轮脱型装置及其应用方法
FR2901161B1 (fr) * 2006-05-17 2009-03-06 Disa Serf Dispositif de debourrage de pieces de fonderies comprenant un espace d'accueil des pieces defini sous forme d'un espace ferme.
FR2907039B1 (fr) * 2006-10-16 2008-12-26 Disa Serf Dispositif de debourrage de pieces de fonderie incluant une poutre.
CA2781407A1 (en) 2008-01-14 2009-07-23 Michael P. Brenzel Apparatus and methods for fracture repair
US20110178520A1 (en) 2010-01-15 2011-07-21 Kyle Taylor Rotary-rigid orthopaedic rod
CA2823873A1 (en) 2010-01-20 2011-07-28 Conventus Orthopaedics, Inc. Apparatus and methods for bone access and cavity preparation
AU2011224529C1 (en) 2010-03-08 2017-01-19 Conventus Orthopaedics, Inc. Apparatus and methods for securing a bone implant
SI24307A (sl) 2013-03-29 2014-09-30 Rc Simit D.O.O. Vrtanje peščenih jeder iz ulitkov
EP3079607A4 (de) 2013-12-12 2017-07-26 Conventus Orthopaedics, Inc. Gewebeversetzungswerkzeuge und -verfahren
AT517133B1 (de) * 2015-04-17 2017-09-15 Fill Gmbh Entkernmaschine/Rüttelmaschine mit verbessertem Antrieb
US10631881B2 (en) 2017-03-09 2020-04-28 Flower Orthopedics Corporation Plating depth gauge and countersink instrument
US10918426B2 (en) 2017-07-04 2021-02-16 Conventus Orthopaedics, Inc. Apparatus and methods for treatment of a bone
CN112439891A (zh) * 2020-11-28 2021-03-05 德清鸿捷铸机有限公司 一种铸造用多维振动落砂机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3239262A1 (de) * 1982-10-23 1984-04-26 Alb. Klein Gmbh & Co Kg, 5241 Niederfischbach Verfahren und vorrichtung zum entkernen von gussstuecken
EP0144031A1 (de) * 1983-11-19 1985-06-12 Mirbeth, Rudolf Vorrichtung zum Entkernen von Gussstücken durch Vibrationsschwingungen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH665975A5 (de) * 1985-04-09 1988-06-30 Fischer Ag Georg Einrichtung zum entkernen von gussteilen.
US4643243A (en) * 1985-08-05 1987-02-17 Seaton-Ssk Engineering Co., Inc. Machine for impact cleaning casting
JPH07112621B2 (ja) * 1990-11-07 1995-12-06 ドーラー・ジヤービス・リミテツド・パートナーシツプ 鋳造品中の砂中子を振動により崩壊、除去する装置
ES2142316T3 (es) * 1991-02-07 2000-04-16 Massin Sa Procedimiento y dispositivos de eliminacion de machos de colada de piezas de funcion.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3239262A1 (de) * 1982-10-23 1984-04-26 Alb. Klein Gmbh & Co Kg, 5241 Niederfischbach Verfahren und vorrichtung zum entkernen von gussstuecken
EP0144031A1 (de) * 1983-11-19 1985-06-12 Mirbeth, Rudolf Vorrichtung zum Entkernen von Gussstücken durch Vibrationsschwingungen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1321209A2 (de) * 2001-12-18 2003-06-25 Global Foundry Systems S.r.l. Vorrichtung zum Entkernen von Gussstücken
EP1321209A3 (de) * 2001-12-18 2004-07-07 Global Foundry Systems S.r.l. Vorrichtung zum Entkernen von Gussstücken

Also Published As

Publication number Publication date
EP0652063B1 (de) 1999-10-20
DE69421240T2 (de) 2000-07-13
US5758713A (en) 1998-06-02
DE69421240D1 (de) 1999-11-25
CA2166836A1 (en) 1997-07-10
FR2711931B1 (fr) 1996-02-09
ES2141809T3 (es) 2000-04-01
FR2711931A1 (fr) 1995-05-12

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