EP0315087B1 - Auskleidungsplatte für den Formraum von kastenlosen Formmaschinen - Google Patents

Auskleidungsplatte für den Formraum von kastenlosen Formmaschinen Download PDF

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Publication number
EP0315087B1
EP0315087B1 EP88118049A EP88118049A EP0315087B1 EP 0315087 B1 EP0315087 B1 EP 0315087B1 EP 88118049 A EP88118049 A EP 88118049A EP 88118049 A EP88118049 A EP 88118049A EP 0315087 B1 EP0315087 B1 EP 0315087B1
Authority
EP
European Patent Office
Prior art keywords
plate
lining
wear
lining plate
support plate
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
EP88118049A
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German (de)
English (en)
French (fr)
Other versions
EP0315087A1 (de
Inventor
Harry Post
Karin Schuch
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19873736967 external-priority patent/DE3736967C1/de
Application filed by Individual filed Critical Individual
Priority to AT88118049T priority Critical patent/ATE60530T1/de
Publication of EP0315087A1 publication Critical patent/EP0315087A1/de
Application granted granted Critical
Publication of EP0315087B1 publication Critical patent/EP0315087B1/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
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06—Core boxes
    • B22C7/065—Venting means

Definitions

  • the invention relates to a lining plate for the molding space of boxless molding machines, as described for example in DE-OS 33 19 463 according to the preamble of claim 1.
  • Such boxless molding machines have a molding space, the circumferential boundary on the inner jacket side, at least on the roof surface side and laterally, is provided with lining plates.
  • a molding space compression chamber
  • mold blocks made of molding sand are successively pressed between two model plates delimiting the molding space on the front side (swiveling inner model plate on the one hand and translationally displaceable outer model plate on the other).
  • the outer model plate which is actuated by means of a hydraulic piston, pushes the mold block outwards against an already existing mold block, so that a mold strand composed of many mold blocks results.
  • the mold cavities opened against each other complement each other to form a holistic mold cavity.
  • the molding sand is introduced into the molding or pressing chamber after the blow molding process with an excess of air. This air must be removed to avoid cavities in the mold block, which is done by means of nozzle-like openings that penetrate the wall of the lining plates.
  • the lining plates are subjected to considerable abrasive wear, which results on the one hand when the molding sand is introduced into the molding space and on the other hand due to the relative movement between the lining plates and the mold block to be pushed out.
  • the lining plates must be replaced either as a whole or individually. So far, one has proceeded in such a way that the lining plates, which are particularly susceptible to wear, namely the two side lining plates and the roof-side lining plate, which contains the slot-like entry opening for the molding sand, were replaced as a whole.
  • the lining plate of the known type initially requires a considerable amount of cutting deformation, namely drilling work for introducing the nozzle openings and also grinding work. Finally, the known lining plate must be subjected to case hardening, which is quite expensive because of the considerable plate thickness. Then the handling of the known, for example, 3 cm thick lining panels is problematic due to their weight alone, especially accidental.
  • the invention has for its object to provide a lining plate easily repairable when worn and - seen overall - can be produced with less effort. This object is achieved in accordance with the characterizing part of patent claim 1.
  • the new lining plate consists of two detachably fastened, tightly lying plate layers, namely a wear plate delimiting the mold space and a backing plate behind the latter. Both plates are firmly or non-positively held in the normal direction, namely by means of holding magnets, held tightly against one another.
  • the two plates are attached to one another in a form-fitting, releasable manner only in order to prevent any relative displacement of the wear plate and carrier plate to one another, in particular when the mold block is extended, and in the simplest form by, for example, both plates at least partially penetrating screw elements which extend transversely to the main plate extension.
  • the wear plate itself is divided into strips and thus consists of individual longitudinal plate elements.
  • the advantage of the lining plate according to the invention is first of all that the carrier plate can remain permanently installed on the machine side.
  • the carrier plate can also consist of a low-quality material, for example mechanical engineering steel of quality St 37, while the wear plate alone has to be made of hardened tool steel with a hardness, for example 74 HR c .
  • the wear plate of a lining plate according to the invention is now worn out beyond a permissible tolerance, only the positive locking means (e.g. the screws mentioned above) need to be removed, whereupon the individual longitudinal plate elements of the wear plate, which is divided into strips, can be removed from the carrier plate by overcoming the magnetic adhesive force. It is easy to imagine that in this way the repair of the surfaces that are subject to wear and tear is particularly simple and, because of the much lower weight of the element of the wear plate that is to be replaced, is not nearly as problematic as before.
  • the positive locking means e.g. the screws mentioned above
  • the lining plate according to the invention can - at least in the long run - be produced with less effort. With a total thickness of the lining plate of three cm, the wear plate is only 1 cm, but the carrier plate is 2 cm thick. The wear plate according to the invention therefore requires considerably less hardness due to its lower thickness due to the smaller volume to be hardened. Or the other way around: since the wear plate according to the invention has only a small hardness volume due to its low thickness, the wear plate according to the invention can be more hard - compared with the known wear plate three times as strong - with comparatively little economic effort - and thus a longer service life - achieve. Because of the lower thickness of the wear plate, the amount of metal removal (drilling work to create nozzle openings, for example) is of course much less than before.
  • each wear plate into individual longitudinal plate elements facilitates both the overall exchange and the partial exchange of worn longitudinal plate elements for new ones.
  • the previously known base plate already has a certain advantage in that only the wear plate needs to be replaced when wear occurs.
  • the known prospectus does not provide any suggestion that separate wear plates should also be provided for the roof-side lining plate and also for the side lining plates.
  • these all have function openings that run through them transversely, such as sand inlet opening and air outlet openings with nozzle inserts.
  • the invention is particularly advantageous in this context, because the production of these functional openings in the case of thick lining plates means a considerable expenditure of cutting work which is repeated with every wear-related replacement work.
  • the invention is limited to the minimum amount of machining work that only occurs in the production of the functional openings in the thin wear plates.
  • the bottom wear plate is in one piece in accordance with the DISAMATIC catalog, which means that the catalog does not provide any suggestion with regard to dividing the wear plate itself into individual strip-shaped longitudinal plate elements that are easy to handle and, alternatively, both the total replacement and only the partial replacement Make it possible to replace worn longitudinal plate elements with new ones.
  • the invention offers the advantage of being able to replace longitudinal plate elements in a comparatively simple manner in a simple and convenient manner, if required, in whole or in part in any possible configuration.
  • a boxless molding machine for producing individual mold blocks 11 of a molding strand 12 is designated by 10 in total.
  • the mold cavities H are formed in the axial longitudinal direction, each of which is supplied with molten metal via a schematically indicated pouring funnel G.
  • the mold cavity H describes, for example, a rotationally symmetrical flywheel-like structure with a hub.
  • a single mold block 11 is produced as follows:
  • a machine-side feed hopper 13 of a box-like machine frame 14 By means of a machine-side feed hopper 13 of a box-like machine frame 14, molding sand with high feed speed is closed by air in the otherwise all-round NEN molded or press room F blown.
  • the mold space F is shown with an outer end opening 16 and with an inner end opening 15.
  • the outer model plate 17, which is a press plate is retracted to the right in the direction of arrow b through the mold cavity F by means of a hydraulically actuated piston rod 18 until the model plate 17 closes the outer end opening 16.
  • an inner model plate 19 which can be pivoted in about a pivot axis S in the direction of the pivoting arrow u closes the other, i.e. the inner end opening 15 of the molding space F.
  • the inner model plate 19 is fastened to a swivel bracket 21 provided on a clamping plate 20.
  • the clamping plate provided at the end with the piston rod 18 and holding the outer model plate 17 is designated by 29.
  • the outer molding plate 17 is advanced in the direction of arrow a by about 10-15 mm, so that a compacted sand molding block 11 is formed.
  • the outer model plate 17 pushes the mold block 11 in the direction of arrow a to the rear end of the already when the piston rod 18 is actuated Mold blocks 11 on the mold strand side.
  • the surfaces delimiting the mold space F on the inner shell side, at least the roof-side inner surface and the two inner side surfaces, which together represent a U which is open at the bottom, both when entering the respective molding sand, but primarily when pushing out the mold block compact are subject to abrasive wear.
  • both lining plates 22, 23 are constructed essentially identically.
  • the roof-side cladding plate 22 (moreover, each lateral cladding plate 23) is formed in two layers, that is to say from a wear plate 25 which directly delimits the mold space F and from a backing plate 24 which fits the rear of the wear plate 25.
  • the wear plate 25 of the side lining plate 23 consists of a total of four approximately horizontally extending strip-shaped longitudinal plate elements 25 1 .
  • nozzle openings 26 are already schematically indicated in FIG. 1, which are used to prevent cavities in the mold block 11 by suctioning off excess air.
  • FIGS. 2-4 Further details emerge from FIGS. 2-4:
  • FIG. 2 shows one of the two side lining plates 23, while FIG. 4 shows the roof-side lining plate 22.
  • FIG. 2 shows one of the two side lining plates 23, while FIG. 4 shows the roof-side lining plate 22.
  • both lining plates 22, 23 the same reference numerals are used wherever possible for analog functional parts.
  • the lining plate 23 is divided into two plate layers which are releasably attached to one another, namely into the wear plate 25 which directly delimits the mold space F and into the support plate 24 which is behind the wear plate 25.
  • the mutually facing large surfaces 28 and 27 of the wear plate 25 and the carrier plate 24 are held firmly and firmly against one another by permanent magnets 30 and are held against any relative displacement, e.g. secured in the axial direction, in particular in direction a.
  • the holding magnets 30 are embedded with their flat adhesive surfaces 32 flush with the surrounding large surface 27 of the carrier plate 24 in the latter.
  • the wear plate 25 has a much smaller plate thickness Py than the carrier plate 24.
  • the thickness P the carrier plate 24 is 2 cm, while the thickness Py of the wear plate is only 1 cm.
  • the wear plate 25 is made of magnetic tool steel, is specially hardened and coated and has, for example, a hardness of 74 HR c , while the carrier plate 24 only consists of otherwise untreated, common mechanical steel, for example of quality St 37 or other - also non-metallic materials.
  • Carrier plate 24 and wear plate 25 have through openings 33, 34 which are aligned with one another.
  • the through holes 34 on the wear plate side are provided with nozzle inserts 35.
  • the positive locking device against a relative displacement of the wear plate 25 and the support plate 24 to each other consists of two holding strips 31 on both sides of the lateral lining plate 23 (likewise the roof-side lining plate 22) extending perpendicular to the direction a of the main displacement load.
  • Each holding strip 31 overlaps two adjacent narrow sides 36, 37 of the carrier plate 24 and the wear plate 25 are flush with the total thickness (P t plus (Py) of the respective lining plate 22 or 23.
  • the holding strips 31 have the same material properties and the same hardness as the wear plate 25.
  • Each retaining strip 31 consists of an angle section steel section which engages with an overlapping web 38 in a Faiz39 on the wear plate side which is open towards the mold space F.
  • the outer surface 40 of the overlap web 38 facing the molding space F is flush with the adjoining large surface 41 (which directly delimits the molding space F) of the wear plate 25.
  • the fastening leg 42 of the retaining strip 31 which rests on the narrow side on the carrier plate 24 has fastening holes 43 for the passage of fastening screws 44 which engage in threaded blind holes 45 which are embedded in the respective narrow side 36 of the carrier plate 24.
  • each wear plate 25, divided into strips consists of individual longitudinal plate elements 25 1 .
  • the strip-shaped division of each wear plate 25 into individual longitudinal plate elements 25 1 facilitates both the overall exchange and the partial exchange of worn longitudinal plate elements 25 1 for new ones.
  • nozzle openings 34 and sintered metal holding magnets 30 are only shown in places for the sake of simplifying the drawings.
  • the elongated hole-like molding sand entry opening 48 is surrounded by individual screw elements 46 which engage in blind pocket holes of the carrier plate 24, not visible, so that the individual wear plate elements 25 1 in the area of the entry opening 48 with additional security to press against the support plate 24.
  • screws 47 can be provided as a positive locking means against any relative displacement between the plates 24, 25 (FIG. 2).
  • the wear plate 25 has a continuous undercut throat 54 which extends transversely to the main direction a of the displacement load.
  • the throat 54 is bounded towards the center of the wear plate 25 by a flat undercut surface 53, which includes an acute angle ⁇ with the adjoining plate-side large surfaces 27, 28.
  • Both narrow sides 36, 37 of wear plate 25 and carrier plate 24 are flush with one another.
  • a shoulder 49 corresponding approximately to the height of the throat 54 is provided on the narrow side 37 of the carrier plate 24 and has a plurality of threaded bores 52 arranged at a distance from one another for receiving stud bolts 50.
  • the conical tip 51 of the stud 50 interacts with the flat undercut surface 50 as with an inclined plane. This in such a way that when the stud 50 is screwed on, its cone 51 acts on the undercut surface 53 in the sense of firmly pulling together the large surfaces 27, 28.
  • the large area of the wear plate 25 delimiting the molding space is designated by 41.
  • the embodiment according to FIG. 6 is a particularly preferred embodiment.
  • FIG. 7 represents, compared to that according to FIG. 6, essentially a geometric exchange, which consists in that the throat 54 is worked into the carrier plate 24, while the shoulder 49 forms part of the wear plate 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Continuous Casting (AREA)
EP88118049A 1987-10-31 1988-10-29 Auskleidungsplatte für den Formraum von kastenlosen Formmaschinen Expired - Lifetime EP0315087B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88118049T ATE60530T1 (de) 1987-10-31 1988-10-29 Auskleidungsplatte fuer den formraum von kastenlosen formmaschinen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19873736967 DE3736967C1 (en) 1987-10-31 1987-10-31 Lining plate for the mould space of boxless moulding machines
DE3736967 1987-10-31
DE3836622 1988-10-27
DE3836622A DE3836622C1 (ja) 1987-10-31 1988-10-27

Publications (2)

Publication Number Publication Date
EP0315087A1 EP0315087A1 (de) 1989-05-10
EP0315087B1 true EP0315087B1 (de) 1991-01-30

Family

ID=25861328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118049A Expired - Lifetime EP0315087B1 (de) 1987-10-31 1988-10-29 Auskleidungsplatte für den Formraum von kastenlosen Formmaschinen

Country Status (7)

Country Link
US (1) US4997025A (ja)
EP (1) EP0315087B1 (ja)
JP (1) JP2649567B2 (ja)
DE (2) DE3836622C1 (ja)
DK (1) DK171914B1 (ja)
ES (1) ES2021418B3 (ja)
WO (1) WO1989003737A1 (ja)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05508111A (ja) * 1990-03-20 1993-11-18 ダンスク　インデユストリ　シンデイカト　アクツイ　エセルスカブ 鋳造鋳型あるいは鋳型部品の連続製作方法およびその方法の実施のための装置
US5465843A (en) * 1994-02-03 1995-11-14 Rehrig Pacific Company Nestable display crate for bottles or the like
US5582227A (en) * 1992-09-01 1996-12-10 Schuch; Karin Method and system for coating surfaces of a caseless mold
ATE160713T1 (de) * 1993-12-28 1997-12-15 Picard Fa Carl Aug Auskleidungsplatte für formkammern
DK126694A (da) * 1994-11-01 1996-05-02 Dansk Ind Syndikat Fremgangsmåde ved dobbeltsidig presning af formboller i et strengformeanlæg
US5967221A (en) * 1997-03-26 1999-10-19 Georg Fischer Disa A/S Detachable wear plate suitable for foundry equipment and for conveying green sand moulds
US6303241B1 (en) * 1998-05-06 2001-10-16 Rampage Ventures, Inc. Wear plate retainer with magnetically retained, replaceable wear plate
CA2407098C (en) 2000-04-28 2009-12-29 Ecolab Inc. Antimicrobial composition
US6966442B2 (en) 2003-01-17 2005-11-22 Rehrig Pacific Company Stacking crates
AT413949B (de) * 2003-06-17 2006-07-15 Boehler Bleche Multilayer Gmbh Einrichtung zur erstellung von giessformen
US7298472B2 (en) * 2004-12-28 2007-11-20 Rheodyne, Llc Fluid analysis apparatus
WO2009074838A1 (en) * 2007-12-10 2009-06-18 Disa Industries A/S Moulding chamber arrangement for a mould-string plant
EP2349611B1 (en) * 2008-10-06 2017-03-22 Disa Industries A/S Lining plate for lining of moulding chambers of moulding machines
WO2012085621A1 (en) * 2010-12-21 2012-06-28 Disa Industries A/S A vertical sand moulding machine
DE202011101449U1 (de) * 2011-05-27 2012-08-28 Carl Aug. Picard GmbH "Verschleißteil zur Befestigung an einem Konstruktionsteil, insbesondere Verschleißplatte oder -leiste für eine Gießereimaschine"
JP6913936B2 (ja) * 2017-05-26 2021-08-04 メタルエンジニアリング株式会社 無枠式造型鋳枠

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1620227A (en) * 1926-05-22 1927-03-08 Valley Mould And Fron Corp Core box for ingot molds or the like
GB567149A (en) * 1943-11-23 1945-01-30 Darwins Ltd Improvements in or relating to sand-cores or moulds for use in foundries
US3734163A (en) * 1971-05-19 1973-05-22 S Larkin Sand mold formation
BE788718A (fr) * 1971-09-23 1973-01-02 Dansk Ind Syndikat Dispositif pour machines automatiques de fabrication de partiesde moul
US3749151A (en) * 1972-04-26 1973-07-31 Gen Motors Corp Vibratory shakeout apparatus
US3817314A (en) * 1973-03-05 1974-06-18 Combustion Eng Flaskless molding machine
DK136519B (da) * 1974-09-05 1977-10-24 Dansk Ind Syndikat Anlæg til fremstilling af støbeforme bestående af ens formparter.
US4437507A (en) * 1981-08-11 1984-03-20 Seeley Robert J Molding machine
DE3319463C2 (de) * 1983-05-28 1985-09-19 Carl Aug. Picard GmbH & Co KG, 5630 Remscheid Auskleidungsplatte für den Formraum an Formmaschinen
JPS61172651A (ja) * 1985-01-24 1986-08-04 Mazda Motor Corp 鋳型造型金型
DE8714510U1 (de) * 1987-10-31 1988-01-14 Post, Harry, 5608 Radevormwald Auskleidungsplatte für den Formraum von Formmaschinen

Also Published As

Publication number Publication date
DK263389D0 (da) 1989-05-30
DK263389A (da) 1989-05-30
WO1989003737A1 (en) 1989-05-05
EP0315087A1 (de) 1989-05-10
JP2649567B2 (ja) 1997-09-03
DE3861714D1 (de) 1991-03-07
DK171914B1 (da) 1997-08-11
US4997025A (en) 1991-03-05
ES2021418B3 (es) 1991-11-01
JPH02501906A (ja) 1990-06-28
DE3836622C1 (ja) 1989-06-08

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