EP0063966A1 - Vorrichtung zum Greifen und Transportieren von Gegenständen und Verfahren zum Entgraten von Giesskernen aus Sand - Google Patents

Vorrichtung zum Greifen und Transportieren von Gegenständen und Verfahren zum Entgraten von Giesskernen aus Sand Download PDF

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Publication number
EP0063966A1
EP0063966A1 EP82400480A EP82400480A EP0063966A1 EP 0063966 A1 EP0063966 A1 EP 0063966A1 EP 82400480 A EP82400480 A EP 82400480A EP 82400480 A EP82400480 A EP 82400480A EP 0063966 A1 EP0063966 A1 EP 0063966A1
Authority
EP
European Patent Office
Prior art keywords
cores
gripping
frame
support
pellet
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
EP82400480A
Other languages
English (en)
French (fr)
Other versions
EP0063966B1 (de
Inventor
Jacques Chamdru
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 EP0063966A1 publication Critical patent/EP0063966A1/de
Application granted granted Critical
Publication of EP0063966B1 publication Critical patent/EP0063966B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
    • B66C1/46—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces by inflatable elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/18—Finishing

Definitions

  • the present invention relates to a device for gripping and transporting parts, comprising, for gripping a part, at least one flexible element which is inflatable by supplying pressurized fluid and which cooperates in the inflated state by clamping effect with the part.
  • the invention also relates to a method of finishing friable parts using this device.
  • the present invention relates to a device for gripping and transporting parts making it possible to simultaneously grasp several parts, even of complicated shape and / or oriented at different angles.
  • the subject of the invention is also a method of finishing friable parts using such a gripping and transport device and allowing in particular the deburring of foundry cores in sand with a view to eliminating burrs due to the plane of joint of the core box, in order to prevent incipient fractures on the parts cast using these cores, in particular parts. safety in the automotive industry, for example suspension arms.
  • the device according to the invention for gripping and transporting parts comprises, for gripping a part, at least one pair of flexible inflatable pads mounted face to face on a common support movable relative to the part to be gripped, by being inflatable one towards the other so as to leave between them, in the non-inflated state, an interval whose width is slightly greater than the distance separating two opposite faces of the part or of a raised part of the part, and clamping said faces together in the inflated state.
  • This device can be adapted without difficulty to the gripping of parts of any shape, by means of an appropriate conformation of the support carrying the inflatable pads.
  • Each swelling pad of the device according to the invention consists of a body of revolution made of flexible material, for example rubber or plastic, having the shape of a bucket with a substantially cylindrical external lateral surface, having an annular rim external to opposite the bottom of the bucket.
  • This patch is connected to the support by a mount having, on its face for fixing to the support, a nozzle whose external shape corresponds to the internal shape of the patch.
  • This tip is surrounded at its base by a groove with a depth slightly less than the thickness of said edge of the pellet.
  • the frame includes a supply of pressurized fluid opening at the free end of the end piece, opposite the bottom of the pellet fitted on said end piece.
  • the patch is thus simply fitted onto the end piece of the frame and when fixing the frame thus furnished on the support, the edge of the patch is clamped between the frame and the support. In the event of damage to a step tille, simply detach the corresponding mount from the support and change the patch.
  • the support has, at the place of attachment of each pellet mount, a through hole whose diameter corresponds substantially to the outside diameter of the cup-shaped body of the pellet and whose depth is equal to or slightly greater than the axial distance between the mounting face of the frame and the outside face of the bottom of the patch.
  • a through hole whose diameter corresponds substantially to the outside diameter of the cup-shaped body of the pellet and whose depth is equal to or slightly greater than the axial distance between the mounting face of the frame and the outside face of the bottom of the patch.
  • the end piece of the frame has a frusto-conical shape which widens towards its free end and that the cup-shaped body of the patch has an inner shape in a truncated cone flaring towards the bottom.
  • the latter comprises several supports which can be fixed in an adjustable manner to a single, movable support plate.
  • the cores are advantageously gripped in the core box, inside the outside contour of the cores and / or above the burrs due to the joint plane of the box, using a device comprising as many supports with swelling pads as the box contains cores.
  • a device comprising as many supports with swelling pads as the box contains cores.
  • a plate 1 is mounted on a handling system, not shown, making it possible to print on the plate 1 a movement perpendicular to the plane of the drawing, as well as a movement in the plane of the drawing.
  • the supports 2 are fixed on the plate 1 in a reciprocal arrangement chosen so as to allow the accommodation of a maximum number of parts 3 of identical shape in a given surface.
  • four of the five pieces 3 of very tormented shape are oriented at different angles in a plane parallel to the plane of the plate 1.
  • each part 3 has three parts 4 projecting upwards.
  • Each support 2 has three corresponding recesses 5 capable of receiving said projections 4 of parts 3.
  • each support 2 comprises in the present case three pairs of gripping means shown in detail in FIG. 2.
  • Each gripping means comprises a flexible inflatable pad 6, for example made of rubber or plastic, and a metal frame 7 for this pad.
  • the pellet 6 is constituted by a bucket-shaped body of revolution, with an appreciably cylindrical outer lateral surface, having an outer annular rim opposite the bottom 9.
  • the inner lateral surface of the bucket is frusto-conical and goes in s flaring towards the bottom 9.
  • the mount 7 comprises, on its fixing surface 10, a projecting end piece 11, having an external shape corresponding substantially to the internal shape of the patch 6. At its base, the end piece 11 is surrounded by a groove 12 formed in the fixing surface 10, this groove 12 having a depth slightly less than the (axial) thickness of the rim 8 of the patch 6.
  • the mount 7 also comprises a channel 13 for supplying pressurized fluid extended by a channel 14 which opens at the free end of the end piece 11, opposite the bottom 9 of the patch 6 fitted onto the end piece 11 of the frame.
  • a part of the support 2 to which the frame 7 is fitted with its pad 6 has also been indicated in dashed lines.
  • the support 2 has, at the place of attachment of the frame 7, a through hole 15 of which the diameter d corresponds substantially to the outside diameter of the cup-shaped body of the patch 6.
  • the depth p of the hole 15 corresponds substantially to the distance (axial. p 'between the fixing surface 10 of the mount 1 and the face outside of the bottom 9 of the patch 11 fitted onto the end piece 11.
  • Two mounts 7 with pads 6 are fixed on two opposite sides of each part of the part 3 provided with a recess 5 for a projection 4 of the part 3, as shown in FIG. 1.
  • the rim 8 of each patch 6 is clamped between the bottom of the groove 12 of the frame 7 and the surface of the support 2 to which the frame 7 is fixed.
  • the support plate 1 has on top a pneumatic distributor 16 connected by conduits 17 passing through holes in the plate 1, to connection blocks 18 each of which is fixed to one of the supports 2.
  • connection blocks 18 each of which is fixed to one of the supports 2.
  • Each block of connection 18 is connected by pipes not shown to the supply channel mentation 13 of each of the mounts 7 fixed on each support 2.
  • a particularly advantageous use of the gripping and transport device as described above consists in the extraction of the foundry cores in sand from a core box, the different cores having complicated and / or different shapes and / or being oriented at different angles in the box.
  • these cores are intended for the casting of parts which must be free of any initiation of rupture, in particular of so-called safety parts for motor vehicles, for example of suspension arms, it is necessary to eliminate on the foundry cores, the burrs due to the joint plane of the box since these burrs would lead precisely to the formation of such incipient fractures on the cast parts.
  • the deburring assembly comprises a support plate 20 on which are fixed in an adjustable manner, by means not shown, for example screws, as many deburring blades 21 as the plate 1 of the gripping and transport device comprises supports 2 for cores 3.
  • a recess 22 In each blade 2'1 is cut a recess 22 whose contour corresponds to the outer contour of a core 3.
  • the reciprocal arrangement of the different blades 21 corresponds to the reciprocal arrangement of the cores 3 below the plate 1, which in turn corresponds to the reciprocal arrangement of the cores 3 in the core box.
  • the cores After having brought the cores 3 suspended from the supports 2 below the plate 1 above the deburring blades 21, the cores are lowered to make them penetrate into the blades 21.
  • the depth of penetration of the cores 3 into the blades 21 is such that the burrs formed on the cores 3 due to the joint plane of the box are eliminated by the blades 21.
  • the latter are advantageously mounted in an adjustable manner on the plate 1.
  • the free supports 2 having been placed on the cores in the box, the plate 1 is lowered on the box.
  • the plate is indexed on the stud of the boot and can then descend on the supports 2 which are then fixed in their correct reciprocal position to the plate 1.
  • Each support 2 advantageously comprises several removable centering studs referenced 23 in FIG. 1.
  • the deburring blades 21 according to FIG. 3 have on their side several centering holes 24, which allows the first descent of the cores 3 on the deburring assembly, to center the blades 21 relative to the supports 2, thanks to the centering studs 23 of the latter, before fixing the blades 21 on the plate 20.
  • the studs 23 are then removed.
  • the number of pairs of swelling pads used to grip a piece is also variable and depends, among other things, on the shape, size and fragility of the pieces.
  • the device is not in any way limited to gripping and transporting sand foundry cores, but can be used for any type of part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Casting Devices For Molds (AREA)
EP82400480A 1981-04-07 1982-03-16 Vorrichtung zum Greifen und Transportieren von Gegenständen und Verfahren zum Entgraten von Giesskernen aus Sand Expired EP0063966B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8106983A FR2503011A1 (fr) 1981-04-07 1981-04-07 Dispositif de prehension et de transport de pieces et procede de parachevement de pieces a l'aide d'un tel dispositif
FR8106983 1981-04-07

Publications (2)

Publication Number Publication Date
EP0063966A1 true EP0063966A1 (de) 1982-11-03
EP0063966B1 EP0063966B1 (de) 1985-06-19

Family

ID=9257121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400480A Expired EP0063966B1 (de) 1981-04-07 1982-03-16 Vorrichtung zum Greifen und Transportieren von Gegenständen und Verfahren zum Entgraten von Giesskernen aus Sand

Country Status (5)

Country Link
US (1) US4480865A (de)
EP (1) EP0063966B1 (de)
DE (1) DE3264210D1 (de)
FR (1) FR2503011A1 (de)
PL (1) PL235860A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990011152A1 (de) * 1989-03-20 1990-10-04 Adolf Hottinger Maschinenbau Gmbh Transportvorrichtung für giessereikerne und -formen
US5000318A (en) * 1990-03-07 1991-03-19 Kupersmit Julius B Container construction for automobile bodies
CN103935764A (zh) * 2013-01-21 2014-07-23 张家港市瑞昌智能机器系统有限公司 一种抓取装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322567C2 (de) * 1983-06-23 1985-05-23 Georg Fischer GmbH, 4020 Mettmann Einrichtung zum Entgraten von als Gießerei-Kerne oder dergleichen ausgebildeten Werkstücken
US4682806A (en) * 1985-01-02 1987-07-28 General Electric Company Quadruple gripper
DE4002555C1 (de) * 1990-01-30 1991-05-29 Adolf Hottinger Maschinenbau Gmbh, 6800 Mannheim, De
CN104692231B (zh) * 2015-03-27 2016-08-24 宁波全力机械模具有限公司 一种大型机体主体芯的下芯吊具

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR553283A (fr) * 1921-06-27 1923-05-19 Perfectionnements apportés aux appareils de manutention, notamment à ceux à utiliser pour manutentionner des objets fragiles et de petites dimensions
GB799487A (en) * 1956-10-01 1958-08-06 Louis Preston Hollander Fluid operated devices for gripping articles
US3056625A (en) * 1961-03-01 1962-10-02 Thomas J Timmerman Lifting device
FR1486737A (fr) * 1966-07-13 1967-06-30 Dansk Ind Syndikat Procédé d'introduction de noyaux dans des moules de fonderie composés d'éléments de moule identiques fabriqués successivement et installation servant à la mise en oeuvre de ce procédé
DE1266931B (de) * 1966-08-12 1968-04-25 Volkswagenwerk Ag Vorrichtung fuer die Entnahme von Kernen aus den Formkaesten von Kernschiessmaschinen
DE1913296A1 (de) * 1969-03-15 1970-09-24 Niedecker Herbert Halteelement zum Einlegen von Formkernen
DE2028845A1 (de) * 1969-06-13 1970-12-17 National Research Development Corp., London Einrichtung zum Erfassen eines Gegenstandes
DE2330460A1 (de) * 1973-06-15 1975-01-09 Juergen Kuenzel Vorrichtung zum halten und transportieren von beliebig geformten gegenstaenden
FR2238662A1 (en) * 1973-07-25 1975-02-21 Technifil Multiple item handling process - pair of jaws grip opposed sides of items placed in flat array
FR2266581A1 (de) * 1973-05-03 1975-10-31 Soprec
AT326844B (de) * 1972-07-27 1975-12-29 Badische Maschf Gmbh Einrichtung zum einleger von kernen in giessformen
FR2277025A1 (fr) * 1974-07-03 1976-01-30 Cetec Dressler Const Etud Ther Dispositif pour la manutention de pieces
DE2513285A1 (de) * 1975-03-26 1976-10-07 Christianhemmers Horst Verfahren zum entgraten von in einer kernformmaschine o.dgl. hergestellten kernen und kernformmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161431A (en) * 1962-03-09 1964-12-15 William K Mathews Brick carrier
CH380915A (fr) * 1962-03-15 1964-08-14 Georges Lesieur & Ses Fils Soc Dispositif de préhension d'un objet mou
US3347587A (en) * 1962-07-23 1967-10-17 Frost James Dahle Article handling apparatus
DE1710054A1 (de) * 1967-04-11 1971-09-16 Zinser Textilmaschinen Gmbh Greiforgan fuer Textilhuelsen

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR553283A (fr) * 1921-06-27 1923-05-19 Perfectionnements apportés aux appareils de manutention, notamment à ceux à utiliser pour manutentionner des objets fragiles et de petites dimensions
GB799487A (en) * 1956-10-01 1958-08-06 Louis Preston Hollander Fluid operated devices for gripping articles
US3056625A (en) * 1961-03-01 1962-10-02 Thomas J Timmerman Lifting device
FR1486737A (fr) * 1966-07-13 1967-06-30 Dansk Ind Syndikat Procédé d'introduction de noyaux dans des moules de fonderie composés d'éléments de moule identiques fabriqués successivement et installation servant à la mise en oeuvre de ce procédé
DE1266931B (de) * 1966-08-12 1968-04-25 Volkswagenwerk Ag Vorrichtung fuer die Entnahme von Kernen aus den Formkaesten von Kernschiessmaschinen
DE1913296A1 (de) * 1969-03-15 1970-09-24 Niedecker Herbert Halteelement zum Einlegen von Formkernen
DE2028845A1 (de) * 1969-06-13 1970-12-17 National Research Development Corp., London Einrichtung zum Erfassen eines Gegenstandes
AT326844B (de) * 1972-07-27 1975-12-29 Badische Maschf Gmbh Einrichtung zum einleger von kernen in giessformen
FR2266581A1 (de) * 1973-05-03 1975-10-31 Soprec
DE2330460A1 (de) * 1973-06-15 1975-01-09 Juergen Kuenzel Vorrichtung zum halten und transportieren von beliebig geformten gegenstaenden
FR2238662A1 (en) * 1973-07-25 1975-02-21 Technifil Multiple item handling process - pair of jaws grip opposed sides of items placed in flat array
FR2277025A1 (fr) * 1974-07-03 1976-01-30 Cetec Dressler Const Etud Ther Dispositif pour la manutention de pieces
DE2513285A1 (de) * 1975-03-26 1976-10-07 Christianhemmers Horst Verfahren zum entgraten von in einer kernformmaschine o.dgl. hergestellten kernen und kernformmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990011152A1 (de) * 1989-03-20 1990-10-04 Adolf Hottinger Maschinenbau Gmbh Transportvorrichtung für giessereikerne und -formen
US5156255A (en) * 1989-03-20 1992-10-20 Adolf Hottinger Maschinenbau Gmbh Transporting device for foundry cores and molds
US5000318A (en) * 1990-03-07 1991-03-19 Kupersmit Julius B Container construction for automobile bodies
CN103935764A (zh) * 2013-01-21 2014-07-23 张家港市瑞昌智能机器系统有限公司 一种抓取装置

Also Published As

Publication number Publication date
FR2503011A1 (fr) 1982-10-08
EP0063966B1 (de) 1985-06-19
US4480865A (en) 1984-11-06
PL235860A1 (de) 1982-11-22
DE3264210D1 (en) 1985-07-25
FR2503011B1 (de) 1984-04-27

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