US3923095A - Apparatus for separating magnetizable castings from casting moulds of sand or similar materials - Google Patents

Apparatus for separating magnetizable castings from casting moulds of sand or similar materials Download PDF

Info

Publication number
US3923095A
US3923095A US480554A US48055474A US3923095A US 3923095 A US3923095 A US 3923095A US 480554 A US480554 A US 480554A US 48055474 A US48055474 A US 48055474A US 3923095 A US3923095 A US 3923095A
Authority
US
United States
Prior art keywords
magnets
casting
carrier frame
mold
castings
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
US480554A
Other languages
English (en)
Inventor
Hemming Kristian Jorgensen
Marius Gunnergaard
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.)
Dansk Industri Syndikat AS
Dansk Landbrugs Grovvareselskab AMBA
Original Assignee
Dansk Landbrugs Grovvareselskab AMBA
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 Dansk Landbrugs Grovvareselskab AMBA filed Critical Dansk Landbrugs Grovvareselskab AMBA
Application granted granted Critical
Publication of US3923095A publication Critical patent/US3923095A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • An apparatus for removing magnetizable castings from a mould of foundry sand comprises a plurality of magnets mounted in a casing and spring biassed towards a basic position therein.
  • the magnets are collectively movable towards the casting exposed in the mould and individually adjustable against the spring bias to the surface shape of the casting so that at least a substantial number of magnets simultaneously contact the casting. In this position the magnets are locked relative to the casing and are collectively retracted, thereby extracting the casting from the mould.
  • the invention relates to an apparatus for separating magnetizable castings from casting moulds of sand or similar materials at the end of a guiding track on which the casting moulds, with castings therein, are placed closely together in a row and are advanced stepwise towards a knocking-out station at which the mould material is caused to drop onto a conveyor after the castings have been removed.
  • the apparatus is primarily intended for use in connection with foundry equipment of the kind operating with a mould consisting of uniform mould parts presenting at least one pouring cavity at each joint in the mould and being produced successively from foundry sand which in a chamber is compressed between a pair of opposed plates which carry semi-patterns corresponding to the castings to be produced. After having been so compressed, the mould part is displaced onto the guiding track aligned with the chamber and is caused to join the row of earlier produced mould parts which at the same time are advanced one step forward on the guiding track. As required, one or more cores can be placed in the pouring cavity, which is still open, in the mould part added last.
  • the casting mould When the pouring operation proper has taken place, the casting mould continues its movement of advance through a cooling section of a suitable length and then arrives at the knockingoutstation where the castings and the mould part material can be separated from each other on a conventional knocking-out grate.
  • Another possibility of separating castings and mould material from each other consists in removing the castings from the mould while the latter is still located on the guiding track.
  • the castings may be treated in a gentler manner and, in addition, various environmental disadvantages, such as a high noise level and inconvenience caused by dust, may be avoided or reduced.
  • the main object of the invention has been to provide an apparatus which makes it possible to perform such a removal of the castings magnetically and in such a way that one and the same apparatus should be applicable for removing castings of literally speaking any optional shape and size.
  • the apparatus according to the invention is characterized in that at the knocking-out station a plurality of magnets are provided which from a starting position are movable first collectively in the direction towards the freely exposed end of the row of casting moulds and next individually in dependence on the shape of the surface of the castings facing the magnets, until each of the plurality of magnets is in contact with said surface, means being provided to subsequently lock the magnets together and means to collectively move them back towards their starting position. During or after the termination of this return movement the castings can be released from the magnets and be delivered for further treatment by means of a separate conveyor.
  • each magnet may aftere having after into contact with the castings be individually rotatable around an axis at right angles to its contact surface. By such a rotary movement the magnet will be able to scratch away sand, if any, at the point of contact with the castings, which is a condition for the establishment of direct contact between the magnet and the castings.
  • the magnets are mounted in a common casing, which is displaceable towards and away from the freely exposed end of the row of casting moulds, and are separately displaceable in the same direction in relation to the casting between a basic position advanced towards the row of casting moulds and a retracted position, and in addition they are spring biased towards the basic position.
  • the various magnets will nonnally have their fronts or active faces located in one and the, same plane which is at right angles to the direction of dispplacement, and in most cases the different parts of the surface of the castings facing the magnets will be spaced at unequal distances from the said plane, that is to say from the magnets to be brought into contact with the different parts of the castings.
  • the various magnets can be interlocked, expediently by being individually locked to the casing, and the casing can then be displaced back, during which movement the magnets carry the castings along with them. After the castings have been released from the magnets, the interlocking of the latter can be eliminated, the spring bias then causing the magnets to be once more brought into the starting position or basic position so as to be ready for another operation.
  • FIG. 1 is a side elevational view, partially in vertical section, of an embodiment of the apparatus according to the invention with the magnets in the starting position or basic position,
  • FIG. 2 is a view similar to FIG. 1 and shows part of the apparatus, likewise in side elevation and partially in vertical section, after the magnets have engaged the casting, and
  • FIG. 3 is a sectional view of the casing of the apparatus with a single magnet, shown in longitudinal section.
  • FIGS. 1 and 2 show the discharge end of a guiding track 1 which supports a casting mould consisting of a number of identical mould parts 2 holding a casting 3 at each joint 4 in the mould.
  • the guiding track 1 is terminated with a short section comprising a frame 5 which carries a hook 6 for holding back the casting 3 which is exposed in the end of the casting mould after the preceding mould part 2 has been pushed out over the end of the guiding track 1 and has dropped onto a conveyor 7.
  • the hook 6 forms one arm of a bell crank, the other arm of which is connected to a hydraulic or pneumatic cylinder 8 which serves for moving the hook 6 between the holding position shown in FIG. 1 and the released position shown in FIG. 2.
  • the frame 5 is adjustable forwards and backwards in relation to the guiding track 1, depending on the thickness of the mould parts 2. This adjustability has in the drawing been indicated by a toothed rack 9 on the underside of the frame 5 engaging a pinion 10, FIG. 1, which can be turned by means of a hand wheel 11, FIG. 2, and can be locked in the position desired.
  • a box-shaped casing 12 Aligned with the freely exposed end of the casting mould a box-shaped casing 12 is provided which by means of a bracket 13 is suspended from a carriage 14 which is displaceable on a pair of horizontal, parallel guides 15, between which a drive cylinder 16 is mounted, the piston rod 17 of which engages the carriage 14.
  • the box-shaped casing 12 contains a plurality of parallel, rod-shaped magnets 18, which will be described in greater detail in the following and which together cover an area corresponding to a substantial portion of the cross-section of the casting mould.
  • a stripper plate 19 is provided which has a hole for each of the magnets 18 and which is suspended displaceably from the guides by means of an additional carriage 20.
  • the stripper plate 19 is displaceable towards and away from the casing 12 by means of a drive cylinder 21 supported by the bracket 13 of the casing. In the position shown in FIG. 1, the casing 12 with the magnets 18 is located above a conveyor 22 for carrying away the released castings 3.
  • FIG. 3 shows parts 23 and 24 of the rear and front walls of the casing 12, and a cylindrical guide tube 25 secured in these walls.
  • a supporting body 26 is accommodated displaceably in the guide tube 25, and at its front end this body is provided with a permanent magnet 27 which is isolated from the supporting body 26 by means of non-magnetic intermediate piece 28.
  • the part of the supporting body 26 located between the walls 23 and 24 has a circumferential recess 29 containing a magnetizable powder or grain material, and the guide tube 25 is surrounded by a magnet coil 30 which, when energized, actuates the powder or the grains in the recess 29 and thereby locks the supporting body 26 to the guide tube 25.
  • the permanent magnet 27 is carried by a spindle 31 which is journalled in the supporting body 26 and the rear portion of which is designed with a steep-pitch thread 32 engaging one or more projections, not visible, in a sleeve 33 which is secured to the rear wall 23 of the casing and in the position shown in FIG. 3 extends slightly forwards past the rear end of the spindle 31.
  • the sleeve 33 is surrounded by a pressure spring 34 which with its ends abuts against the wall 23 of the casing and the rear end of the supporting body 26, respectively.
  • the drive cylinder 21 is first actuated so that the stripper plate 19 is pulled in towards the casing 12, thus causing the magnets 18 to project through the holes of the stripper plate.
  • the drive cylinder 16 is actuated for displacement of the casing 12 and the stripper plate 19 towards the casting mould, and during the last part of this movement the various magnets 18 get into contact with the casting 3 as shown in FIG. 2.
  • the hook 6 is released by an actuation of the drive cylinder 8, and the magnet coils 30 are energized, so that all of the magnets 18 are now locked to the casing.
  • the drive cylinder 16 the casing 12 is now returned to the starting position shown in FIG. 1 while carrying along the casting 3, and in this position the casting can be released from the magnets by means of the stripper plate 19, so that the casting drops onto the conveyor 22.
  • the current to the magnet coils 30 can be switched off, so that the springs 34 urge the various magnets to their basic position shown in FIGS. 1 and 3.
  • the drive cylinder 8 causes the hook 6 to return to the position shown in FIG. 1, so that during the next step of advance of the casting mould the hook will plough into the surface of the succeeding mould part 2 and engage the next piece of casting.
  • electromagnets may be used instead of the permanent magnets 27, and that the locking of the magnets 18 in the position shown in FIG. 2 may be effected in other ways than by means of the magnet couplings shown, the sole condition to be fulfilled by the locking mechanism being that it can be actuated and released at will with the magnets in any position, dependent on the shape of the surface of the castings, and in the released position permits the individual displacement of the magnets.
  • the movement of the magnets 18 collectively need not be a movement of displacement, but may for example ,be a pivoting movement around an overhead axis which is either parallel to or at right angles to the direction of advance of the casting mould.
  • An apparatus for separating magnetizable castings from a sand mold consisting of a succession of mold parts which are horizontally advanced stepwise to a mold breaking station at which each mold part is successively allowed to drop away so as to expose its respective casting
  • a carrier frame mounted in front of said mold breaking station so as to be displaceable towards and away therefrom
  • a plurality of magnets mounted in said carrier frame and protruding towards said mold breaking station, said magnets being individually displaceable relative to said carrier frame between an extended basic position and a retracted position
  • each magnet has a supporting body which is displaceable in a guide tube in said carrier frame and which, after the contact of the magnet with the casting has been established, can be locked in the guide tube by the actuation of a magnet coil surrounding the guide tube, in connection with a magnetizable powder or grain material in one or more recesses in the supporting body.
  • the supporting body is tubular and contains a rotatable spindle which is rigidly connected to the magnet and is provided with a steep-pitch thread engaging one or more guiding projections fixed in the carrier frame for bringing about the turning of the magnet during its retraction in relation to the carrier frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
US480554A 1973-07-09 1974-06-18 Apparatus for separating magnetizable castings from casting moulds of sand or similar materials Expired - Lifetime US3923095A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK381373AA DK129320B (da) 1973-07-09 1973-07-09 Apparat til adskillelse af magnetiserbart støbegods fra støbeforme af sand eller lignende materiale.

Publications (1)

Publication Number Publication Date
US3923095A true US3923095A (en) 1975-12-02

Family

ID=8127041

Family Applications (1)

Application Number Title Priority Date Filing Date
US480554A Expired - Lifetime US3923095A (en) 1973-07-09 1974-06-18 Apparatus for separating magnetizable castings from casting moulds of sand or similar materials

Country Status (14)

Country Link
US (1) US3923095A (nl)
JP (1) JPS5250015B2 (nl)
BE (1) BE816370A (nl)
CA (1) CA1033149A (nl)
CH (1) CH571912A5 (nl)
CS (1) CS170154B2 (nl)
DD (1) DD112921A5 (nl)
DK (1) DK129320B (nl)
ES (1) ES428104A1 (nl)
FR (1) FR2236585B1 (nl)
GB (1) GB1440154A (nl)
IT (1) IT1018188B (nl)
NL (1) NL157526B (nl)
SE (1) SE388796B (nl)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359083A (en) * 1979-11-15 1982-11-16 Dansk Industri Syndikat A/S Apparatus for separating castings from moulds of sand or similar material
US6390174B1 (en) * 1997-05-14 2002-05-21 Georg Fischer Disa A/S Method of extracting castings from moulds in a mould-string plant, and plant for use in carrying out the method
US7140414B1 (en) 2004-10-20 2006-11-28 Hayes Lemmerz International, Inc. Method of removing a gate remnant from a casting
US9566724B2 (en) 2013-10-30 2017-02-14 Nike, Inc. Automated rubber molding and de-molding

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737733C2 (de) * 1977-08-22 1979-10-18 Halbergerhuette Gmbh, 6600 Saarbruecken Einrichtung zum Trennen des Formballens von einem aus magnetischem Material bestehenden Gußteil
GB8429010D0 (en) * 1984-11-16 1984-12-27 Colt Int Ltd Controls
DE3545213A1 (de) * 1985-12-24 1987-06-25 Imados Inst Manipulacnich Dopr Fuer das anheben von ferromagnetischen lasten, insbesondere blechen, bestimmte vorrichtung
US5101554A (en) * 1986-10-01 1992-04-07 Emitec Gesellschaft Fur Emissionstechnologie Mbh Process for producing an assembled camshaft as well as assembled camshaft consisting of a shaft tube and slid-on elements
JP6863306B2 (ja) * 2018-01-31 2021-04-21 新東工業株式会社 鋳型ばらし方法及び鋳型ばらし装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1171818A (en) * 1914-10-24 1916-02-15 Builders Iron Foundry Process of forming jigs or fixtures.
US2487944A (en) * 1945-02-12 1949-11-15 Irving L Pressman Template
US2672664A (en) * 1951-05-24 1954-03-23 Eugene C Sudziarski Magnetic form for use in making molds
US2754708A (en) * 1953-08-25 1956-07-17 Multiple Die Vise Co Inc Vise for irregularly shaped objects
US2882771A (en) * 1956-06-22 1959-04-21 Ronald R Blazek Work-holding device having plungers actuated by hydraulic fluid composed of a fusible alloy
US3107402A (en) * 1961-06-02 1963-10-22 Pettibone Mulliken Corp Core-unloading apparatus for an automatic core-making machine
US3627020A (en) * 1970-09-08 1971-12-14 Bangor Punta Operations Inc Mold-breaking device
US3807682A (en) * 1972-12-29 1974-04-30 L Catinella Accelerated knock-out for molded parts

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1171818A (en) * 1914-10-24 1916-02-15 Builders Iron Foundry Process of forming jigs or fixtures.
US2487944A (en) * 1945-02-12 1949-11-15 Irving L Pressman Template
US2672664A (en) * 1951-05-24 1954-03-23 Eugene C Sudziarski Magnetic form for use in making molds
US2754708A (en) * 1953-08-25 1956-07-17 Multiple Die Vise Co Inc Vise for irregularly shaped objects
US2882771A (en) * 1956-06-22 1959-04-21 Ronald R Blazek Work-holding device having plungers actuated by hydraulic fluid composed of a fusible alloy
US3107402A (en) * 1961-06-02 1963-10-22 Pettibone Mulliken Corp Core-unloading apparatus for an automatic core-making machine
US3627020A (en) * 1970-09-08 1971-12-14 Bangor Punta Operations Inc Mold-breaking device
US3807682A (en) * 1972-12-29 1974-04-30 L Catinella Accelerated knock-out for molded parts

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359083A (en) * 1979-11-15 1982-11-16 Dansk Industri Syndikat A/S Apparatus for separating castings from moulds of sand or similar material
US6390174B1 (en) * 1997-05-14 2002-05-21 Georg Fischer Disa A/S Method of extracting castings from moulds in a mould-string plant, and plant for use in carrying out the method
US7140414B1 (en) 2004-10-20 2006-11-28 Hayes Lemmerz International, Inc. Method of removing a gate remnant from a casting
US9566724B2 (en) 2013-10-30 2017-02-14 Nike, Inc. Automated rubber molding and de-molding
US9724851B2 (en) 2013-10-30 2017-08-08 Nike, Inc. Automated rubber molding and de-molding
US9931769B2 (en) 2013-10-30 2018-04-03 Nike, Inc. Automated rubber molding and de-molding
US10322532B2 (en) 2013-10-30 2019-06-18 Nike, Inc. Automated rubber molding and de-molding

Also Published As

Publication number Publication date
JPS5038636A (nl) 1975-04-10
DD112921A5 (nl) 1975-05-12
ES428104A1 (es) 1976-07-16
GB1440154A (en) 1976-06-23
DK129320C (nl) 1975-02-17
DE2432382A1 (de) 1975-01-30
NL7409213A (nl) 1975-01-13
DE2432382B2 (de) 1975-06-26
DK129320B (da) 1974-09-30
CH571912A5 (nl) 1976-01-30
IT1018188B (it) 1977-09-30
BE816370A (fr) 1974-09-30
NL157526B (nl) 1978-08-15
FR2236585A1 (nl) 1975-02-07
CS170154B2 (nl) 1976-08-27
JPS5250015B2 (nl) 1977-12-21
FR2236585B1 (nl) 1979-01-26
SE388796B (sv) 1976-10-18
SE7408729L (nl) 1975-01-10
CA1033149A (en) 1978-06-20

Similar Documents

Publication Publication Date Title
US3923095A (en) Apparatus for separating magnetizable castings from casting moulds of sand or similar materials
US3627020A (en) Mold-breaking device
US3749151A (en) Vibratory shakeout apparatus
US4765389A (en) Core setter
CA922745A (en) Apparatus for transporting castings from continuous casting machines
EP0412743A1 (en) Process for producing injection-moulded sinterings
EP3283248B1 (en) Method and system for indexing moulds
US3062389A (en) Flask and mold handling mechanism
US2795021A (en) Horizontal die casting machine
US4044818A (en) Apparatus for forming sand molds
GB1303223A (nl)
US3443629A (en) Apparatus for casting metal articles
US3127716A (en) Machine tool loader
GB1445737A (en) Inserting cores into casting moulds
GB1358749A (en) Removal of castings or other moulded objects from mould parts
SU369978A1 (ru) Устройство для удаления отлитых трубных заготовок из центробежных литейных форм
DE2432382C3 (de) Vorrichtung zum Trennen magnetisierbarer GieBlinge von Gießformen aus Sand oder ähnlichem Material
SU779061A1 (ru) Устройство дл сн ти изделий с транспортного средства
SU1063536A1 (ru) Посто нна литейна форма
SU1688978A1 (ru) Устройство дл удалени заливов и скрапа с поверхности литейной формы
JPS5725248A (en) Mold conveyor in flaskless type mold making machine
SU1044420A2 (ru) Кокильный станок
SU1069938A1 (ru) Устройство дл нанесени облицовочных покрытий на кокили
US3110940A (en) Flask manipulating and mold forming apparatus
SU1348059A1 (ru) Кокиль с горизонтальной плоскостью разъема