EP0652063B1 - Vorrichtung zum Entkernen von Gussstücken - Google Patents

Vorrichtung zum Entkernen von Gussstücken Download PDF

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Publication number
EP0652063B1
EP0652063B1 EP94402482A EP94402482A EP0652063B1 EP 0652063 B1 EP0652063 B1 EP 0652063B1 EP 94402482 A EP94402482 A EP 94402482A EP 94402482 A EP94402482 A EP 94402482A EP 0652063 B1 EP0652063 B1 EP 0652063B1
Authority
EP
European Patent Office
Prior art keywords
chassis
gripping
vertical
median
fixed
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
EP94402482A
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English (en)
French (fr)
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EP0652063A1 (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
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MASSIN SA
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Publication date
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Publication of EP0652063A1 publication Critical patent/EP0652063A1/de
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    • 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 a device improved scouring of casting cores of parts foundry.
  • the hollow parts of a casting are usually molded around shaped sand cores complementary to those of the hollow parts.
  • I1 exists in the prior art different types of cleaning devices for vibrating a foundry piece in order to disintegrate the casting cores.
  • the devices proposed either are complex and fragile, either do not give full satisfaction and leave fragments of nuclei stuck on the foundry parts.
  • EP-A-0 144 031 describes a cleaning device of casting cores of foundry parts, of the type comprising a rigid frame hung on a fixed support, at least one device for clamping a workpiece carried by the chassis and two unbalance motors attached to it chassis and intended, in operation, to oscillate the frame.
  • the invention aims to provide a device for simple and effective cleaning, allowing to obtain a complete elimination of the casting cores, even in the case a complex shaped casting such as a internal combustion engine cylinder head.
  • the invention relates to a device cleaning of the aforementioned type, characterized in that the chassis has a vertical axis of symmetry forming an axis oscillation of the chassis, defined by the intersection longitudinal and transverse vertical median planes of the chassis, this chassis being hung on the support by elastically deformable connecting means, the device cleaning device comprising two clamping devices pieces to be cleaned carried by two opposite ends of the chassis while being aligned in the median longitudinal plane, the two motors being fixed on two opposite sides of the chassis and having axes of rotation parallel to the axis of chassis symmetry and aligned with this axis of symmetry in the median transverse plane, the motors can thus oscillate the chassis around its virtual axis of so that the center of gravity of each part at breaking out 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 disburse two castings at a time of which only one is shown in Figure 2 for clarity.
  • the piece of foundry shown in this figure is a cylinder head P motor fitted with casting weights m.
  • the cleaning device 10 is placed in an anti-noise box 11 provided with openings closable access, as shown in Figure 1.
  • the device 10 comprises a rigid chassis 12, generally elongated, having an axis of symmetry vertical X forming a virtual axis of oscillation of the chassis, as will be described in more detail later, defined by the intersection of the median planes vertical longitudinal L and transverse T of the chassis, these plans being shown in phantom in Figure 2.
  • the chassis 12 is hung on a fixed support 14 by means of four cylindrical joints 16, of the type known, of vertical axes, elastically deformable transversely, arranged symmetrically two by two with respect to the longitudinal vertical median planes L and transverse T.
  • the chassis 12 is provided with a framework comprising three horizontal plates 18 superimposed, of shapes identical general, interconnected by two souls longitudinal vertical 20 welded to the plates horizontal 18, a single core 20 being shown on Figure 3.
  • the width of the horizontal plates 18 is more weak in their middle part than in their parts ends, the latter parts comprising rectangular cutouts 22 open opposite the axis of X symmetry.
  • the cleaning device 10 further comprises two devices 24 for clamping work pieces carried by two ends of the chassis 12 while being aligned in the median longitudinal plane L, and two motors 26 to unbalance, of known type, conventionally fixed on the two opposite sides of the chassis delimited by the parts narrow medians 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 relative to the median longitudinal plane L, fixed on the opposite edges of the cutouts 22.
  • a first plate end 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 marketed under the name "PNEURIDE" by the PARKER company.
  • the pneumatic cylinder 32 is provided with a fixed end hung on the support 30 and a movable end carrying a plate 34 parallel to the two end plates 28,30, forming a movable jaw of Tightening.
  • the jaws 28, 34 therefore delimit faces vertical clamping opposite which is maintained a workpiece P.
  • the fixed jaws 28, respectively the movable jaws 34, of the two devices clamping 24 are mounted in opposition to each other with respect to the median longitudinal plane L.
  • each clamping device 24 has 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 workpiece to break out.
  • Horizontal grids 36 are arranged between the lower end of the end plates 28.30 of clamping devices. These grids 36 form supports facilitating the installation and removal of parts to be cleaned and allow gravity flow fragments of casting cores which come loose 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 for example comprise a hammer tire 40, as shown in FIG. 2, intended to strike part of the part to be stripped arranged in line with the orifices 38, this part being constituted for example by the casting weights m integral with the foundry piece.
  • a plate can be inserted between the weights m and the hammer 40, in particular when these weights are relatively fragile.
  • the rotation of the motors 26 has the effect of making oscillate the chassis 12 around its virtual axis X, in elastically deforming the joints 16 substantially in a horizontal plane, so that the center of gravity of each workpiece P oscillates by describing a substantially horizontal and ellipsoidal trajectory, of long axis transverse to the chassis 12.
  • the oscillations have the effect of disaggregating the casting cores completely without any fragments does not remain in the hollows of the foundry parts.
  • the power of the unbalance motors 26 is adapted so that the amplitude of the oscillations of the parts to be cleaned, measured along the major axis of the ellipsoidal path is between 12 and 16 mm about.
  • each unbalance motor has a power of around 5 kW
  • each pneumatic cylinder is supplied with compressed air having a pressure of 2 at around 5 bars, so that castings of variable weights.
  • the amplitude of the oscillations of the center of gravity parts to be cleaned, measured along the major axis of the ellipsoidal trajectory, is about 14 mm, that is to say 7 mm on either side of the rest position of the center of gravity, for a frequency of 1,500 oscillations / min, i.e. 1,500 vibrations / min around from the rest position of the center of gravity.
  • the amplitude and frequency of oscillations of the parts to be cleaned can vary in depending on the adjustment of the unbalance motors. Otherwise, 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 rack two foundry pieces at a time by submitting these to vibrations transmitted by the chassis which wear them, without using the means of transmission classic connecting rods and cranks that are complex and fragile. Therefore, the cleaning device according to the invention is very robust and reliable.
  • the vibrations produced by the cleaning according to the invention have amplitudes and frequencies higher than those obtained in the devices conventional, allowing to completely disaggregate the casting cores without leaving any fragments inside the foundry parts.

Claims (9)

  1. Vorrichtung zum Kern-Ausstoßen von Gießkernen von Gußstücken, der Art, die einen auf eines festen Unterlage (14) befestigten festen Rahmen (12) umfaßt, wenigstens eine von dem Rahmen (12) getragene Vorrichtung (24) zum Einspannen eines auszustoßenden Stückes und zwei auf diesem Rahmen (12) befestigte Unbalanz-Motoren, die dazu bestimmt sind, den Rahmen (12) bei Betrieb hin- und herpendeln zu lassen, dadurch gekennzeichnet, daß der Rahmen (12) eine vertikale (X) Symmetrieachse aufweist, die eine virtuelle, durch den Schnittpunkt der vertikalen mittleren Ebenen in Längsrichtung (L) und in Querrichtung (T) des Rahmens realisierte Pendelachse des Rahmens bildet, wobei dieser Rahmen (12) mittels elastisch verformbarer Verbindungsmittel (16) an der Unterlage (14) befestigt ist, wobei das Kern-Ausstoßen zwei von zwei dem Rahmen (12) gegenüberliegenden Endstücken getragenen, in Längsrichtung der mittleren Ebene (L) angeordneten Vorrichtungen (24) zum Einspannen von auszustoßenden Stücken umfaßt, wobei die zwei Motoren (26) auf den zwei dem Rahmen (12) gegenüberliegenden Seiten befestigt sind und zur Symmetrieachse (X) des Rahmens (12) parallele Umdrehungsachsen (R) aufweisen und mit dieser Symmetrieachse in der mittleren (T) Ebene in Querrichtung angeordnet sind, wobei die Motoren (26) somit den Rahmen (12) um seine virtuelle (X) Achse derart zum Hin- und Herpendeln bringen können, daß der Schwerpunkt jedes auszustoßenden Stücks eine deutlich horizontale und ellipsenförmige Bahn beschreibt.
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die den Rahmen (12) mit der Unterlage (14) verbindenden Mittel vier zylindrische (16) Gelenke mit vertikalen, in Querrichtung elastisch verformbaren Achsen umfassen, die paarweise zu den in Längsrichtung (L) und in Querrichtung (T) verlaufenden vertikalen mittleren Ebenen symmetrisch angeordnet sind.
  3. Vorrichtung gemäß Anspruch 1 oder 2 dadurch gekennzeichnet, daß jede Vorrichtung zum Einspannen (24) eine feste (28) Klemmbacke und eine mobile (34) Klemmbacke umfaßt, die die vertikalen gegenüberliegenden Einspannungsflächen, zwischen denen ein auszustoßendes Stück festgehalten werden kann, begrenzt.
  4. Vorrichtung gemaß Anspruch 3, dadurch gekennzeichnet, daß die mobile (34) Klemmbacke mindestens von einem mit einem pneumatischen Kammerzylinder (32) getragen wird.
  5. Vorrichtung gemäß Anspruch 3 oder 4, dadurch gekennzeichnet, daß die festen (28) Klemmbacken, bzw. die mobilen (34) Klemmbacken der zwei Vorrichtungen zum Einspannen (24) im Verhältnis zur mittleren vertikalen Ebene in Längsrichtung (L) gegeneinander angebracht sind.
  6. Vorrichtung gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der mittlere Teil des Rahmens (12), auf dem die Motoren (26) befestigt sind, enger ist als die die Vorrichtungen zum Einspannen (24) tragenden Endstücke des Rahmens (12).
  7. Vorrichtung gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Rahmen (12) mit einer horizontalen, untereinander durch vertikale (20) Kerne in Längsrichtung verlaufenden Platten (18) umfassenden Tragkonstruktion versehen ist.
  8. Vorrichtung gemäß aller Ansprüche 3 bis 7 gemeinsam, dadurch gekennzeichnet, daß jede Vorrichtung zum Einspannen (24) zwei vertikale Endplatten (28, 30) umfaßt, die im Verhältnis zur mittleren Ebene in Längsrichtung (L) symmetrisch verlaufen, auf den gegenüberliegenden rechteckigen (22), in den entsprechenden Enden der horizontalen Platten der Tragkonstruktion angeordneten Zuschneidrändern angeordnet sind, wobei eine erste Endplatte (28) die feste Klemmbacke der Vorrichtung zum Einspannen bildet, die zweite Endplatte (30) eine Unterlage für ein festes Endstück des pneumatischen (32) Zylinders bildet, wobei die Vorrichtung zum Einspannen (24) außerdem eine dritte (24) parallele Platte mit fester (28) Klemmbacke umfaßt, die von dem mobilen Endstück des pneumatischen (32) Zylinders getragen wird, die die mobile Klemmbacke der Vorrichtung zum Einspannen (24) bildet.
  9. Vorrichtung gemäß einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, daß die festen (28) Klemmbacken der Vorrichtungen zum Einspannen (24) Durchgangsöffnungen (28) für Mittel (40) zum Hämmern der in den Vorrichtungen zum Einspannungen festgehaltenen Stücke umfassen.
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 EP0652063A1 (de) 1995-05-10
EP0652063B1 true 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)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3236998B2 (ja) * 1999-04-17 2001-12-10 好高 青山 鋳物の砂落し装置
US6644382B1 (en) * 1997-12-13 2003-11-11 Yoshitaka Aoyama Casting sand shake-out method and its apparatus
ITTO20011180A1 (it) * 2001-12-18 2003-06-18 Global Foundry Systems Srl Dispositivo per rimuovere le anime dai getti di fusione.
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.
US8287538B2 (en) 2008-01-14 2012-10-16 Conventus Orthopaedics, Inc. Apparatus and methods for fracture repair
US20110178520A1 (en) 2010-01-15 2011-07-21 Kyle Taylor Rotary-rigid orthopaedic rod
CN105534561B (zh) 2010-01-20 2018-04-03 康文图斯整形外科公司 用于骨接近和骨腔准备的装置及方法
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
CN105939677A (zh) 2013-12-12 2016-09-14 康文图斯整形外科公司 组织移位工具和方法
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
WO2019010252A2 (en) 2017-07-04 2019-01-10 Conventus Orthopaedics, Inc. APPARATUS AND METHODS FOR TREATING BONES
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

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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
DE3341894C1 (de) * 1983-11-19 1985-03-14 Bayerische Motoren Werke AG, 8000 München Vorrichtung zum Entkernen von Gussstuecken durch Vibrationsschwingungen
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
CA2079996C (fr) * 1991-02-07 2000-04-25 Marcel Massin Procede et dispositifs de debourrage de noyaux de coulee de pieces de fonderie

Also Published As

Publication number Publication date
CA2166836A1 (en) 1997-07-10
DE69421240T2 (de) 2000-07-13
ES2141809T3 (es) 2000-04-01
EP0652063A1 (de) 1995-05-10
US5758713A (en) 1998-06-02
FR2711931B1 (fr) 1996-02-09
FR2711931A1 (fr) 1995-05-12
DE69421240D1 (de) 1999-11-25

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