EP0315087A1 - Lining for the moulding chamber of flaskless moulding machines - Google Patents

Lining for the moulding chamber of flaskless moulding machines Download PDF

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Publication number
EP0315087A1
EP0315087A1 EP88118049A EP88118049A EP0315087A1 EP 0315087 A1 EP0315087 A1 EP 0315087A1 EP 88118049 A EP88118049 A EP 88118049A EP 88118049 A EP88118049 A EP 88118049A EP 0315087 A1 EP0315087 A1 EP 0315087A1
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EP
European Patent Office
Prior art keywords
plate
wear
lining
lining plate
plate according
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EP88118049A
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German (de)
French (fr)
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EP0315087B1 (en
Inventor
Harry Post
Karin Schuch
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Individual
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Individual
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Priority claimed from DE19873736967 external-priority patent/DE3736967C1/en
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Priority to AT88118049T priority Critical patent/ATE60530T1/en
Publication of EP0315087A1 publication Critical patent/EP0315087A1/en
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    • 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 which delimit 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 go to Avoidance of voids in the mold block can be removed, which is done by means of nozzle-like exhaust openings which 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.
  • both plates are positively and releasably attached to one another, in the simplest form by, for example, both plates at least partially penetrating screw elements at right angles to the main plate extension.
  • 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 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 volume of hardness due to its low thickness, a greater hardness - and thus a longer service life - can be achieved with the wear plate according to the invention in comparison with the known wear plate, which is three times as strong. Because of the lower thickness of the wear plate is natural Lich also the effort of cutting deformation (drilling work to create nozzle openings, for example) much less than before.
  • a boxless molding machine for producing individual mold blocks 11 of a molding strand 12 is designated by 10 in total.
  • a single mold block 11 is produced as follows:
  • a machine-side feed hopper 13 of a box-like machine frame 14 molding sand with high feed speed is blown into the otherwise closed mold or pressing space F by means of air.
  • 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 pushed through the mold cavity F to the right in the direction of arrow b by means of a hydraulically operated piston rod 18 withdrawn 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 front 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.
  • both lining plates 22, 23 are constructed essentially identically.
  • the roof-side cladding plate 22 (moreover also each lateral cladding plate 23) is formed in two layers, i.e. consists of a wear plate 25 which directly delimits the mold space F and of a support plate 24 which snugly supports the wear plate 25 on the back.
  • the wear plate 25 of the side lining plate 23 consists of a total of four approximately horizontally extending strip-shaped longitudinal plate elements 251.
  • nozzle openings 26 are already schematically indicated in FIG. 1, which are used to prevent cavities in the mold block 11 from 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 P v than the support plate 24.
  • the thickness P t of the support plate 24 is 2 cm, while the thickness P v 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 support plate 24 consists only 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 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 support plate 24 and wear plate 25 are flush with the total thickness (P t plus (P v ) 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 3l consists of an angle section steel section which engages with an overlapping web 38 in a fold 39 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 holding strip 31, which abuts the support plate 24 on the narrow side, 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 support plate 24.
  • each wear plate 25, divided into strips, consists of individual longitudinal plate elements 251.
  • 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 against new ones.
  • nozzle openings 34 and sintered metal holding magnets 30 are only shown in places for the sake of simplifying the drawing.
  • slot-like molding sand entry opening 48 shown there is surrounded by individual screw elements 46 which engage in blind blind holes of the support plate 24, so as to prevent the individual wear plate elements 25 1 in the area of the entry opening 48 with additional security to press 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.

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  • 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)

Abstract

Eine Auskleidungsplatte (23) für den Formraum von Formmaschinen ist mit die Auskleidungsplatte (23) quer durchsetzenden Funktionsöffnungen (26), wie Sandeintragsöffnung und Luftauftrittsöffnungen, letztere gegebenenfalls zur Aufnahme von Düseneinsätzen (35), versehen. Die Auskleidungsplatte (23) ist in zwei lösbar aneinander befestigte Plattenlagen (24, 25), nämlich in eine den Formraum begrenzende Verschleißplatte (25) und in eine die Verschleißplatte (25) hinterlagernde Trägerplatte (24), unterteilt. Die einander zugewandten Großflächen (28, 27) von Verschleiß- und Trägerplatte (25, 24) sind mittels Haftmagnete (30) satt aneinanderliegend gehalten und gegen axiale Relativverschiebung zueinander zusätzlich formschlüssig lösbar gesichert. Die Auskleidungsplatte (23) gestattet bei Verschleiß eine unproblematische und nur mit einem vergleichsweise geringen Kostenaufwand verbundene Instandsetzung.A lining plate (23) for the molding space of molding machines is provided with functional openings (26) which penetrate the lining plate (23) transversely, such as sand inlet opening and air outlet openings, the latter optionally for receiving nozzle inserts (35). The lining plate (23) is subdivided into two plate layers (24, 25) detachably fastened to one another, namely into a wear plate (25) delimiting the mold space and into a support plate (24) behind the wear plate (25). The mutually facing large surfaces (28, 27) of the wear plate and carrier plate (25, 24) are held tightly against one another by means of holding magnets (30) and additionally secured in a form-fitting manner against axial relative displacement. The lining plate (23) allows an unproblematic and only with a comparatively low cost repair when worn.

Description

Die Erfindung betrifft eine Auskleidungsplatte für den Formraum von kastenlosen Formmaschinen, wie sie entsprechend dem Oberbegriff des Patent­anspruchs 1 beispielsweise in der DE-OS 33 19 463 beschrieben ist.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.

Derartige kastenlose Formmaschinen, weisen einen Formraum auf, dessen innenmantelseitige Um­fangsbegrenzung, zumindest dachflächenseitig und seitlich, mit Auskleidungsplatten versehen ist. In einem solchen Formraum (Preßkammer) werden zwischen zwei den Formraum stirnseitig begrenzen­den Modellplatten (hochschwenkbare innere Modell­platte einerseits und translatorisch verschieb­liche äußere Modellplatte andererseits) in dis­kontinuierlicher Arbeitsweise aufeinanderfolgend Formblöcke aus Formsand gepreßt. Nach Hoch­schwenken der inneren Modellplatte schiebt die mittels eines hydraulischen Kolbens betätigte äußere Modellplatte den Formblock nach außen gegen einen jeweils bereits vorhandenen Form­block, so daß sich ein aus vielen Formblöcken zusammengesetzter Formstrang ergibt. Bei diesem Formstrang ergänzen sich jeweils die gegen­einander geöffneten Formhöhlungen zweier stirn­seitig aneinanderliegender Formblöcke zu einer ganzheitlichen Formhöhlung.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. In such a molding space (compression chamber), mold blocks made of molding sand are successively pressed between two model plates which delimit the molding space on the front side (swiveling inner model plate on the one hand and translationally displaceable outer model plate on the other). After swiveling up the inner model plate, 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. In this mold strand, the mold cavities opened against each other complement each other to form a holistic mold cavity.

Das Eintragen des Formsandes in den Form- bzw. Preßraum geschieht nach dem Schießblasverfahren mit einem Überschuß an Luft. Diese Luft muß zur Vermeidung von Lunkern im Formblock entfernt werden, was mittels düsenartiger Abzugsöffnungen geschieht, welche die Wandung der Auskleidungs­platten durchsetzen.The molding sand is introduced into the molding or pressing chamber after the blow molding process with an excess of air. This air must go to Avoidance of voids in the mold block can be removed, which is done by means of nozzle-like exhaust openings which penetrate the wall of the lining plates.

Die Auskleidungsplatten sind einem erheblichen abrasiven Verschleiß unterworfen, welcher sich zum einen beim Eintragen des Formsandes in den Formraum und zum andern durch die Relativbewegung zwischen Auskleidungsplatten und auszuschiebendem Formblock ergibt. Sobald der Abrieb an den Aus­kleidungsplatten eine vorgegebene Toleranz über­schritten hat, müssen die Auskleidungsplatten entweder insgesamt oder einzeln ausgewechselt werden. Bislang verfuhr man so, daß man die be­sonders verschleißanfälligen Auskleidungsplatten, nämlich die beiden seitlichen Auskleidungsplatten und die dachseitige Auskleidungsplatte, welche die langlochartige Eintragsöffnung für den Form­sand enthält, insgesamt auswechselte.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. As soon as the abrasion on the lining plates has exceeded a predetermined tolerance, 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.

Die Auskleidungsplatte der bekannten Art er­fordert zunächst einen erheblichen Aufwand an spangebender Verformung, nämlich Bohrarbeit zum Einbringen der Düsenöffnungen und außerdem Schleifarbeit. Schließlich muß die bekannte Aus­kleidungsplatte einer Einsatzhärtung unterzogen werden, die wegen der erheblichen Plattenstärke recht kostenaufwendig ist. Sodann ist die Hand­habung der bekannten beispielsweise 3 cm starken Auskleidungsplatten allein aufgrund ihres Ge­wichts problematisch, vor allem unfallträchtig.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.

Ausgehend von der bekannten Auskleidungsplatte (DE-OS 33 19 463), liegt der Erfindung die Auf­gabe zugrunde, eine bei Verschleiß leicht instand­setzbare und - insgesamt gesehen - mit geringerem Aufwand herstellbare Auskleidungsplatte zu schaffen. Diese Aufgabe wird entsprechend dem Kennzeichenteil des Patentanspruchs 1 gelöst.Starting from the known lining plate (DE-OS 33 19 463), 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.

Entsprechend der Erfindung besteht die neue Auskleidungsplatte aus zwei lösbar aneinander be­festigten, satt aneinanderliegenden Plattenlagen, nämlich aus einer den Formraum begrenzenden Ver­schleißplatte und aus einer letztere hinter­lagernden Trägerplatte. Beide Platten sind in Normalrichtung haft- bzw. kraftschlüssig, und zwar mittels Haftmagnete, satt aneinanderliegend gehalten. Lediglich um überhaupt eine Relativ­verschiebung von Verschleiß- und Trägerplatte zu­einander, insbesondere beim Ausfahren des Form­blocks, zu verhindern, sind beide Platten form­schlüssig lösbar aneinander befestigt, und zwar in der einfachsten Form durch beispielsweise beide Platten mindestens teilweise quer zur haupt­sächlichen Plattenerstreckung durchsetzende Schraubelemente.According to the invention, 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. Merely to prevent any relative displacement of the wear plate and the support plate to one another, in particular when the mold block is being extended, both plates are positively and releasably attached to one another, in the simplest form by, for example, both plates at least partially penetrating screw elements at right angles to the main plate extension.

Der Vorteil der erfindungsgemäßen Auskleidungs­platte besteht zunächst darin, daß die Träger­platte maschinenseitig ständig montiert bleiben kann. Die Trägerplatte kann zudem aus einem geringerwertigen Werkstoff, beispielsweise aus Maschinenbaustahl der Qualität St 37, bestehen, während allein die Verschleißplatte aus ge­härtetem Werkzeugstahl mit einer Härte z.B. 74 HRC zu bestehen braucht.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.

Wenn nun die Verschleißplatte einer erfindungs­gemäßen Auskleidungsplatte über eine zulässige Toleranz hinaus verschlissen ist, brauchen ledig­lich die Formschlußmittel (z.B. die vorerwähnten Schrauben) entfernt werden, worauf sich die Verschleißplatte unter Überwindung der mag­netischen Haftkraft von der Trägerplatte abziehen läßt. Es ist leicht vorstellbar, daß auf diese Weise die Instandsetzung der den Formraum be­grenzenden verschleißbehafteten Flächen besonders einfach und aufgrund des wesentlich geringeren Gewichts des jeweils auszuwechselnden Elements (Verschleißplatte) bei weitem nicht so proble­matisch ist wie bisher.If the wear plate of a lining plate according to the invention is now worn beyond a permissible tolerance, only the positive locking means (e.g. the aforementioned screws) need to be removed, whereupon the wear plate can be removed from the carrier plate while overcoming the magnetic adhesive force. It is easy to imagine that in this way the repair of the surfaces which are subject to wear and tear and which are bounded by the mold space is particularly simple and, because of the much lower weight of the element to be replaced (wear plate), is nowhere near as problematic as before.

Die erfindungsgemäße Auskleidungsplatte ist - zumindest auf die Dauer gesehen - mit einem ge­ringeren Aufwand herstellbar. Bei einer Gesamt­stärke der Auskleidungsplatte von drei cm ist die Verschleißplatte nur noch 1 cm, die Trägerplatte aber 2 cm stark. Die erfindungsgemäße Verschleiß­platte erfordert daher aufgrund ihrer geringeren Stärke, bedingt durch das zu härtende geringere Volumen, einen wesentlich geringeren Härteauf­wand. Oder andersherum: da die erfindungsgemäße Verschleißplatte wegen ihrer geringen Stärke nur ein geringes Härtevolumen aufweist, läßt sich bei der erfindungsgemäßen Verschleißplatte im Ver­gleich zur dreimal so starken bekannten Ver­schleißplatte mit vergleichsweise geringem wirt­schaftlichen Aufwand eine größere Härte - damit eine größere Standzeit - erzielen. Wegen der geringeren Stärke der Verschleißplatte ist natür­ lich auch der Aufwand an spangebender Verformung (Bohrarbeit zur Erstellung von Düsenöffnungen z.B.) wesentlich geringer als bisher.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 volume of hardness due to its low thickness, a greater hardness - and thus a longer service life - can be achieved with the wear plate according to the invention in comparison with the known wear plate, which is three times as strong. Because of the lower thickness of the wear plate is natural Lich also the effort of cutting deformation (drilling work to create nozzle openings, for example) much less than before.

Weitere Erfindungsmerkmale ergeben sich aus den Unteransprüchen.Further features of the invention result from the subclaims.

In den Zeichnungen ist die Erfindung anhand bevorzugter Ausführungsbeispiele näher darge­stellt, es zeigen

  • Fig. 1 eine schematische Schnittansicht einer kastenlosen Formmaschine,
  • Fig. 2 eine vergrößerte Darstellung einer aus Fig. 1 ersichtlichen, den Form- bzw. Preßraum seitlich begrenzenden Auskleidungsplatte,
  • Fig. 3 einen abgeknickten teilweisen Längs­schnitt entlang der Schnittlinie III-III in Fig. 2,
  • Fig. 4 eine Untersicht der dachseitig des Form- bzw. Preßraums angeordneten Auskleidungs­platte,
  • Fig. 5 eine Fig. 2 entsprechende Darstellung einer anderen Ausführungsform,
  • Fig. 6 einen abgeknickten teilweisen Längs­schnitt entlang der Schnittlinie VI-VI in Fig. 5 und
  • Fig. 7 einen abgeknickten teilweisen Längs­schnitt entlang der Schnittlinie VII-VII in Fig. 5 einer abgewandelten Ausführungsform.
In the drawings, the invention is shown in more detail using preferred exemplary embodiments, show it
  • 1 is a schematic sectional view of a boxless molding machine,
  • FIG. 2 shows an enlarged illustration of a lining plate that can be seen from FIG. 1 and laterally delimits the molding or pressing space,
  • 3 shows a bent partial longitudinal section along the section line III-III in FIG. 2,
  • 4 is a bottom view of the lining plate arranged on the roof side of the molding or pressing space,
  • 5 a representation corresponding to FIG. 2 of another embodiment,
  • Fig. 6 is a kinked partial longitudinal section along the section line VI-VI in Fig. 5 and
  • Fig. 7 is a kinked partial longitudinal section along the section line VII-VII in Fig. 5 of a modified embodiment.

In Fig. 1 ist eine kastenlose Formmaschine zur Herstellung von einzelnen Formblöcken 11 eines Formstranges 12 insgesamt mit 10 bezeichnet.In Fig. 1, a boxless molding machine for producing individual mold blocks 11 of a molding strand 12 is designated by 10 in total.

Jeweils zwei benachbart aneinanderliegende Stirn­seiten der Formblöcke 11 ergeben in axialer Längs­richtung aufeinanderfolgende ganzheitliche Form­hohlräume H, welche jeweils über einen schema­tisch angedeuteten Gießtrichter G mit schmelz­flüssigem Metall beschickt werden. Im vor­liegenden Falle beschreibt der Formhohlraum H etwa ein rotationssymmetrisches schwungrad­ähnliches Gebilde mit einer Nabe.Two adjacent end faces of the mold blocks 11 each result in successive integral mold cavities H in the axial longitudinal direction, each of which is supplied with molten metal via a schematically indicated pouring funnel G. In the present case, the mold cavity H describes, for example, a rotationally symmetrical flywheel-like structure with a hub.

Die Herstellung eines einzelnen Formblocks 11 geschieht wie folgt:A single mold block 11 is produced as follows:

Durch einen maschinenseitigen Aufgabetrichter 13 eines kastenartigen Maschinengestells 14 wird Formsand mit hoher Zuführgeschwindikeit mittels Luft in den ansonsten allseitig geschlossenen Form- bzw. Preßraum F eingeblasen. In Fig. 1 ist der Formraum F mit einer äußeren stirnseitigen Öffnung 16 und mit einer inneren stirnseitigen Öffnung 15 gezeigt. Zur Schließung des Hohlraums wird die eine Preßplatte darstellende äußere Modellplatte 17 mittels einer hydraulisch be­tätigten Kolbenstange 18 nach rechts in Pfeilrich­tung b durch den Formhohlraum F hindurch so weit zurückgezogen, bis die Modellplatte 17 die äußere stirnseitige Öffnung 16 verschließt.Through a machine-side feed hopper 13 of a box-like machine frame 14, molding sand with high feed speed is blown into the otherwise closed mold or pressing space F by means of air. In Fig. 1, the mold space F is shown with an outer end opening 16 and with an inner end opening 15. To close the cavity, the outer model plate 17, which is a press plate, is pushed through the mold cavity F to the right in the direction of arrow b by means of a hydraulically operated piston rod 18 withdrawn until the model plate 17 closes the outer end opening 16.

In Geschlossenstellung des Formhohlraums F verschließt eine um eine Schwenkachse S in Rich­tung des Schwenkpfeiles u einschwenkbare innere Modellplatte 19 die andere, d.h. die innere stirn­seitige Öffnung 15 des Formraums F. Hierzu ist die innere Modellplatte 19 an einer an einer Aufspannplatte 20 versehenen Schwenkkonsole 21 befestigt.In the closed position of the mold cavity F, 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 front opening 15 of the molding space F. For this purpose, the inner model plate 19 is fastened to a swivel bracket 21 provided on a clamping plate 20.

Die endseitig mit der Kolbenstange 18 vor­gesehene, die äußere Modellplatte 17 haltende Auf­spannplatte ist mit 29 bezeichnet.The clamping plate provided at the end with the piston rod 18 and holding the outer model plate 17 is designated by 29.

Sobald der in vorbeschriebener Weise ge­schlossene Formraum F mit Formsand gefüllt ist, wird die äußere Formplatte 17 in Richtung des Pfeiles a um etwa 10-15 mm zugestellt, so daß ein verdichteter Sand-Formblock 11 entsteht. Nachdem die innere Modellplatte 19 in die gemäß Fig. 1 dargestellte Position hochgeschwenkt wurde, so daß sie die Durchlaufbewegung der Formblöcke 11 nicht behindert, schiebt die äußere Modellplatte 17 bei Betätigung der Kolbenstange 18 den Form­block 11 in Pfeilrichtung a bis an die rück­wärtige Stirnseite des bereits formstrangseitig vorhandenen Formblocks 11.As soon as the mold space F, which is closed in the manner described above, is filled with molding sand, 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. After the inner model plate 19 has been pivoted into the position shown in FIG. 1 so that it does not hinder the continuous movement of the mold blocks 11, 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.

Es ist vorstellbar, daß die den Formraum F innenmantelseitig umgrenzenden Flächen, zumindest die dachseitige Innenfläche sowie die beiden inneren Seitenflächen, die insgesamt ein nach unten offenes U darstellen, sowohl beim Eintrag des jeweiligen Formsandes, vornehmlich aber beim Ausschieben des Formblock-Preßlings, einem erheb­lichen abrasiven Verschleiß unterworfen sind.It is conceivable that 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, all of which follow one represent open U below, both when entering the respective molding sand, but primarily when pushing out the mold block compact, are subject to considerable abrasive wear.

Diesem abrasiven Verschleiß ist dadurch Rech­nung getragen worden, daß die Dachinnenseite des Formraums F mit einer dachseitigen Auskleidungs­platte 22 und die beiden Seitenflächen des den Formraum F begrenzenden Innenmantels mit je einer seitlichen Auskleidungsplatte 23 versehen sind. Beide Auskleidungsplatten 22, 23 sind - grundsätz­lich betrachtet - im wesentlichen identisch auf­gebaut.This abrasive wear has been taken into account in that the inside of the roof of the mold space F is provided with a roof-side cladding plate 22 and the two side surfaces of the inner shell delimiting the mold space F are each provided with a side cladding plate 23. Basically, both lining plates 22, 23 are constructed essentially identically.

Aus Fig. 1 ist bereits ersichtlich, daß die dachseitige Auskleidungsplatte 22 (im übrigen auch jede seitliche Auskleidungsplatte 23) zwei­lagig ausgebildet ist, d.h. aus einer den Form­raum F direkt begrenzenden Verschleißplatte 25 und aus einer die Verschleißplatte 25 rückseitig satt hinterlagernden Trägerplatte 24 besteht. Aus Fig. 1 ist auch ersichtlich, daß die Verschleiß­platte 25 der seitlichen Auskleidungsplatte 23 insgesamt aus vier sich etwa horizontal er­streckenden streifenförmigen Längsplattenele­menten 25₁ besteht. Zudem sind in Fig. 1 bereits Düsenöffnungen 26 schematisch angedeutet, welche zur Verhinderung von Lunkern im Formblock 11 einer Absaugung überschüssiger Luft dienen.From Fig. 1 it can already be seen that the roof-side cladding plate 22 (moreover also each lateral cladding plate 23) is formed in two layers, i.e. consists of a wear plate 25 which directly delimits the mold space F and of a support plate 24 which snugly supports the wear plate 25 on the back. From Fig. 1 it can also be seen that the wear plate 25 of the side lining plate 23 consists of a total of four approximately horizontally extending strip-shaped longitudinal plate elements 25₁. In addition, nozzle openings 26 are already schematically indicated in FIG. 1, which are used to prevent cavities in the mold block 11 from suctioning off excess air.

Weitere Einzelheiten ergeben sich aus den Fig. 2-4:Further details emerge from FIGS. 2-4:

Fig. 2 stellt eine der beiden seitlichen Aus­kleidungsplatten 23 dar, während Fig. 4 die dach­seitige Auskleidungsplatte 22 zeigt. Bezüglich beider Auskleidungsplatten 22, 23 werden - soweit möglich - bei analogen Funktionsteilen stets die­selben Bezugsziffern verwendet.FIG. 2 shows one of the two side lining plates 23, while FIG. 4 shows the roof-side lining plate 22. With regard to both lining plates 22, 23, the same reference numerals are used wherever possible for analog functional parts.

Aus Fig. 3 ist - zugleich stellvertretend für die dachseitige Auskleidungsplatte 22 - der zwei­lagige Aufbau einer seitlichen Auskleidungsplatte 23 zu ersehen.From Fig. 3 - at the same time representative of the roof-side lining plate 22 - the two-layer structure of a lateral lining plate 23 can be seen.

Die Auskleidungsplatte 23 ist in zwei lösbar aneinander befestigte Plattenlagen, nämlich in die den Formraum F unmittelbar begrenzende Ver­schleißplatte 25 und in die die Verschleißplatte 25 hinterlagernde Trägerplatte 24 unterteilt. Die einander zugewandten Großflächen 28 und 27 von Verschleißplatte 25 und Trägerplatte 24 sind über Permanentmagnete 30 haftschlüssig satt aneinander­liegend gehalten und über an beiden Endseiten vorgesehene Halteleisten 31 gegen jegliche Relativverschiebung, z.B. in Axialrichtung, ins­besondere in Richtung a, gesichert.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.

Die Haftmagnete 30 sind mit ihren ebenen Haft­flächen 32 bündig mit der umgebenden Großfläche 27 der Trägerplatte 24 in letztere eingelassen.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.

Aus Fig. 3, (Darstellung etwa im Maßstab 1:1) ist zu ersehen, daß die Verschleißplatte 25 eine wesentlich geringere Plattenstärke Pv aufweist als die Trägerplatte 24. Im vorliegenden Falle beträgt die Stärke Pt der Trägerplatte 24 2 cm, während die Stärke Pv der Verschleißplatte nur 1 cm ausmacht.From Fig. 3, (representation approximately on a scale of 1: 1) it can be seen that the wear plate 25 has a much smaller plate thickness P v than the support plate 24. In the present case, the thickness P t of the support plate 24 is 2 cm, while the thickness P v of the wear plate is only 1 cm.

Die Verschleißplatte 25 besteht aus magne­tischem Werkzeugstahl, ist spezialgehärtet und beschichtet und weist beispielsweise eine Härte von 74 HRc auf, während die Trägerplatte 24 lediglich aus ansonsten unbehandeltem üblichen Maschinenbaustahl, beispielsweise der Qualität St 37 oder anderen - auch nichtmetallischen Werk­stoffen - besteht.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 support plate 24 consists only of otherwise untreated, common mechanical steel, for example of quality St 37 or other - also non-metallic materials.

Trägerplatte 24 und Verschleißplatte 25 weisen miteinander fluchtende Durchgangsöffnungen 33, 34 auf. Die verschleißplattenseitigen Durchgangs­öffnungen 34 sind mit Düseneinsätzen 35 versehen.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.

Die Formschlußsicherung gegen eine Relativver­schiebung von Verschleißplatte 25 und Träger­platte 24 zueinander besteht aus jeweils zwei beidendig an der seitlichen Auskleidungsplatte 23 (desgleichen die dachseitige Auskleidungsplatte 22) sich senkrecht zur Richtung a der hauptsäch­lichen Verschiebebeanspruchung erstreckenden Halteleisten 31. Jede Halteleiste 31 überlappt zwei benachbarte Schmalseiten 36, 37 von Träger­platte 24 und Verschleißplatte 25 über die Gesamt­stärke (Pt zuzüglich (Pv) der jeweiligen Aus­kleidungsplatte 22 bzw. 23 bündig. Die Halte­leisten 31 weisen dieselben Werkstoffeigen­schaften und dieselbe Härte wie die Verschleiß­platte 25 auf.The positive locking 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 support plate 24 and wear plate 25 are flush with the total thickness (P t plus (P v ) 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.

Jede Halteleiste 3l besteht aus einem Winkel­profilstahlabschnitt, welcher mit einem Über­griffssteg 38 in einen zum Formraum F hin offenen verschleißplattenseitigen Falz 39 eingreift. Hier­bei ist die dem Formraum F zugewandte Außenfläche 40 des Übergriffssteges 38 mit der sich an­schließenden Großfläche 41 (die den Formraum F unmittelbar begrenzt) der Verschleißplatte 25 bündig.Each retaining strip 3l consists of an angle section steel section which engages with an overlapping web 38 in a fold 39 on the wear plate side which is open towards the mold space F. Here, 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.

Der schmalseitig an der Trägerplatte 24 an­liegende Befestigungsschenkel 42 der Halteleiste 31 weist Befestigungslöcher 43 für den Durchgriff von Befestigungsschrauben 44 auf, welche in Ge­windesacklöcher 45 eingreifen, die in die je­weilige Schmalseite 36 der Trägerplatte 24 ein­gelassen sind.The fastening leg 42 of the holding strip 31, which abuts the support plate 24 on the narrow side, 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 support plate 24.

Aus den Fig. 2, 4 und 5 ist außerdem zu ersehen, daß jede Verschleißplatte 25, streifen­förmig aufgeteilt, aus einzelnen Längsplatten­elementen 25₁ besteht. Die streifenförmige Auf­teilung jeder Verschleißplatte 25 in einzelne Längsplattenelemente 25₁ erleichtert sowohl den Gesamtaustausch als auch den partiellen Austausch von verschlissenen Längsplattenelementen 25₁ gegen neue.2, 4 and 5 can also be seen that each wear plate 25, divided into strips, consists of individual longitudinal plate elements 25₁. 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 against new ones.

Zu den Darstellungen entsprechend den Fig. 2, 4 und 5 ist noch nachzutragen, daß Düsenöffnungen 34 und Sintermetall- Haftmagnete 30 aus Gründen der Zeichnungsvereinfachung nur stellenweise dar­gestellt sind.2, 4 and 5 it must be added that nozzle openings 34 and sintered metal holding magnets 30 are only shown in places for the sake of simplifying the drawing.

Zu Fig. 4 bleibt noch zu erwähnen, daß die dort gezeigte langlochartige Formsand-Eintrags­öffnung 48 von einzelnen Schraubelementen 46 um­geben ist, welche in nicht sichtbare Gewindesack­löcher der Trägerplatte 24 eingreifen, um so die einzelnen Verschleißplattenelemente 25₁ im Bereich der Eintragsöffnung 48 mit zusätzlicher Sicherheit gegen die Trägerplatte 24 zu drücken.4 remains to be mentioned that the slot-like molding sand entry opening 48 shown there is surrounded by individual screw elements 46 which engage in blind blind holes of the support plate 24, so as to prevent the individual wear plate elements 25 1 in the area of the entry opening 48 with additional security to press the support plate 24.

Aus den vorstehenden Darstellungen wird deut­lich, daß die Verschleißplatten 25 bei Bedarf rasch und einfach auszuwechseln sind, während die jeweilige Trägerplatte 24 in nicht dargestellter Weise mit dem maschinenseitigen kastenartigen Gestell 14 verbunden bleiben kann.From the above representations it is clear that the wear plates 25 can be replaced quickly and easily if necessary, while the respective carrier plate 24 can remain connected to the machine-side box-like frame 14 in a manner not shown.

Im Zusammenhang insbesondere der Fig. 2, 4 und 5 wird deutlich, daß die Längsachsen der Längs­plattenelemente 25₁ sich gemäß Fig. 2 und 5 parallel und gemäß Fig. 4 quer zur hauptsäch­lichen Richtung a der Verschiebebeanspruchung er­strecken.In connection with FIGS. 2, 4 and 5 it is clear that the longitudinal axes of the longitudinal plate elements 25 1 extend parallel to FIGS. 2 and 5 and according to FIG. 4 transversely to the main direction a of the displacement stress.

Alternativ oder zusätzlich können als Formschluß­mittel gegen jegliche Relativverschiebung zwischen den Platten 24, 25 Schrauben 47 vor­gesehen sein (Fig. 2).Alternatively or additionally, screws 47 can be provided as a positive locking means against any relative displacement between the plates 24, 25 (FIG. 2).

Zur Formschlußsicherung gegen eine Relativ­verschiebung von Verschleißplatte 25 und Träger­platte 24 zueinander, sind gemäß den Fig. 6 und 7 zwei Ausführungsformen alternativ vorgesehen.To ensure positive locking against a relative displacement of wear plate 25 and carrier plate 24 relative to one another, two embodiments are alternatively provided according to FIGS. 6 and 7.

Gemäß Fig. 6 weist die Verschleißplatte 25 eine sich quer zur hauptsächlichen Richtung a der Verschiebebeanspruchung erstreckende durchgehende hinterschnittene Kehle 54 auf. Die Kehle 54 ist zur Mitte der Verschleißplatte 25 hin von einer ebenen Hinterschneidungsfläche 53 begrenzt, welche mit den aneinanderliegenden platten­seitigen Großflächen 27, 28 einen spitzen Winkel ß einschließt. Beide Schmalseiten 36, 37 von Ver­schleißplatte 25 und Trägerplatte 24 sind mit­einander bündig.According to FIG. 6, 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 β 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.

Gemäß Fig. 6 ist an der Schmalseite 37 der Trägerplatte 24 eine etwa der Höhe der Kehle 54 entsprechende Schulter 49 vorgesehen, welche mehrere im Abstand voneinander angeordnete Gewindebohrungen 52 zur Aufnahme von Stift­schrauben 50 aufweist. Die kegelförmige Spitze 51 der Stiftschraube 50 wirkt mit der ebenen Hinter­schneidungsfläche 50 wie mit einer schiefen Ebene zusammen. Dieses derart, daß beim Zugrunde­schrauben der Stiftschraube 50 deren Kegel 51 die Hinterschneidungsfläche 53 im Sinne eines festen Aneinanderziehens der Großflächen 27, 28 beauf­schlagt.According to FIG. 6, 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.

Die den Formraum begrenzende Großfläche der Verschleißplatte 25 ist mit 41 bezeichnet.The large area of the wear plate 25 delimiting the molding space is designated by 41.

Beim Ausführungsbeispiel gemäß Fig. 6 handelt es sich um ein besonders bevorzugtes Ausführungs­beispiel.The embodiment according to FIG. 6 is a particularly preferred embodiment.

Das Ausführungsbeispiel gemäß Fig. 7 stellt gegenüber dem gemäß Fig. 6 im wesentlichen eine geometrische Vertauschung dar, die darin besteht, daß die Kehle 54 in die Trägerplatte 24 eingearbeitet ist, während die Schulter 49 Be­standteil der Verschleißplatte 25 bildet.The embodiment according to 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.

Claims (15)

1. Auskleidungsplatte für den Formraum von kastenlosen Formmaschinen, mit die Auskleidungs­platte quer durchsetzenden Funktionsöffnungen, wie Sandeintragsöffnung und Luftaustritts­öffnungen, letztere gegebenenfalls zur Aufnahme von Düseneinsätzen, dadurch gekennzeichnet, daß die Auskleidungsplatte (22; 23) in zwei lösbar aneinander befestigte Plattenlagen, nämlich in eine den Formraum begrenzende Verschleißplatte (25) und in eine die Verschleißplatte (25) hinter­lagernde Trägerplatte (24) unterteilt ist, daß die einander zugewandten Großflächen (28; 27) von Verschleiß- und Trägerplatte (25; 24) mittels Haftmagnete (30) satt aneinanderliegend gehalten und gegen Relativverschiebung zueinander zusätz­lich formschlüssig lösbar gesichert sind.1. liner plate for the molding space of boxless molding machines, with the liner plate transversely penetrating functional openings, such as sand inlet opening and air outlet openings, the latter optionally for receiving nozzle inserts, characterized in that the liner plate (22; 23) in two releasably attached plate layers, namely in one the wear plate (25) which delimits the mold space and is subdivided into a support plate (24) behind the wear plate (25) such that the large surfaces (28; 27) of the wear and support plate (25; 24) facing one another fit snugly against one another using holding magnets (30) held and secured against relative displacement to each other additionally releasably secured. 2. Auskleidungsplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Haftmagnete (30) mit ihren ebenen Haftmagnetflächen (32) bündig mit der umgebenden Großfläche (27) der Trägerplatte (24) in diese eingelassen und befestigt sind.2. Lining plate according to claim 1, characterized in that the holding magnets (30) with their flat holding magnetic surfaces (32) are flush with the surrounding large surface (27) of the carrier plate (24) embedded and fastened therein. 3. Auskleidungsplatte nach Anspruch 1 oder nach Anspruch 2, dadurch gekennzeichnet, daß jeder Haftmagnet (30) ein Permanentmagnet kreis­zylindrischer oder rechteckiger Grundform ist.3. Lining plate according to claim 1 or according to claim 2, characterized in that each holding magnet (30) is a permanent magnet of circular cylindrical or rectangular basic shape. 4. Auskleidungsplatte nach Anspruch 3, dadurch gekennzeichnet, daß die Haftmagnete (30) aus Sinterwerkstoff bestehen.4. lining plate according to claim 3, characterized in that the holding magnets (30) consist of sintered material. 5. Auskleidungsplatte nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß die Verschleiß­platte (25) eine wesentlich geringere Platten­stärke (Pv) als die Trägerplatte (24) aufweist.5. lining plate according to one of claims 1-4, characterized in that the wear plate (25) has a substantially smaller plate thickness (P v ) than the carrier plate (24). 6. Auskleidungsplatte nach einem der Ansprüche 1-5, dadurch gekennzeichnet, daß die Verschleiß­platte (25) eine wesentlich größere Härte als die Trägerplatte (24) aufweist.6. lining plate according to one of claims 1-5, characterized in that the wear plate (25) has a substantially greater hardness than the carrier plate (24). 7. Auskleidungsplatte nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Form­schlußsicherung gegen axiale Relativverschiebung von Verschleiß- und Trägerplatte (25; 24) zu­einander durch beide Platten (25; 24) mindestens teilweise durchsetzende Schrauben (47) gebildet ist.7. lining plate according to one of claims 1 to 6, characterized in that the positive locking against axial relative displacement of wear and carrier plate (25; 24) to each other by both plates (25; 24) at least partially penetrating screws (47) is formed. 8. Auskleidungsplatte nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Form­schlußsicherung gegen Relativverschiebung, ins­besondere gegen axiale Relativverschiebung, von Verschleiß- und Trägerplatte (25; 24) zueinander aus mindestens einer sich senkrecht zur Richtung (a bzw. b) der Verschiebebeanspruchung er­streckenden randlich angeordneten Halteleiste (31) besteht, welche zwei benachbarte Schmal­seiten (37; 36) von Verschleiß- und Trägerplatte (25; 24) über die Gesamtstärke (Pt + Pv) der Aus­kleidungsplatte (22; 23) bündig überlappt und welche vorzugsweise dieselbe Härte wie die Ver­schleißplatte (25) aufweist.8. lining plate according to one of claims 1 to 7, characterized in that the positive locking against relative displacement, in particular against axial relative displacement, of wear and carrier plate (25; 24) to each other from at least one perpendicular to the direction (a or b) of Shifting stress extending edge-arranged retaining strip (31), which overlaps two adjacent narrow sides (37; 36) of wear and support plate (25; 24) over the total thickness (P t + P v ) of the lining plate (22; 23) and which preferably has the same hardness as the wear plate (25). 9. Auskleidungsplatte nach Anspruch 8, dadurch gekennzeichnet, daß die Halteleiste (3l) aus einem Winkelprofilabschnitt besteht, welcher mit einem Übergriffssteg (38) in einen zum Formraum (F) offenen verschleißplattenseitigen Falz (39) eingreift, wobei die dem Formraum (F) zugewandte Außenfläche (40) des Übergriffssteges (38) mit der angrenzenden Großfläche (41) der Verschleiß­platte (25) bündig ist.9. lining plate according to claim 8, characterized in that the retaining strip (3l) consists of an angular profile section, which engages with an overlap (38) in a to the mold space (F) open wear plate-side fold (39), the mold space (F) facing outer surface (40) of the overlap (38) is flush with the adjacent large surface (41) of the wear plate (25). 10. Auskleidungsplatte nach Anspruch 8 oder nach Anspruch 9, dadurch gekennzeichnet, daß der schmalseitig (bei 36) an der Trägerplatte (24) anliegende Befestigungsschenkel (42) der Halte­leiste (31) Befestigungslöcher (43) für den Durch­griff von Befestigungsschrauben (44) aufweist, die in schmalseitig (bei 36) der Trägerplatte (24) eingelassenen Gewindelöchern (45) gehaltenen sind.10. lining plate according to claim 8 or according to claim 9, characterized in that the narrow side (at 36) on the carrier plate (24) adjacent fastening leg (42) of the retaining strip (31) has fastening holes (43) for the passage of fastening screws (44) which are held in threaded holes (45) embedded in the narrow side (at 36) of the carrier plate (24). 11. Auskleidungsplatte nach einem der An­sprüche 1-10, dadurch gekennzeichnet, daß die Ver­schleißplatte (25), streifenförmig aufgeteilt, aus einzelnen Längsplattenelementen (25₁) besteht.11. Lining plate according to one of claims 1-10, characterized in that the wear plate (25), divided into strips, consists of individual longitudinal plate elements (25₁). 12. Auskleidungsplatte nach Anspruch 11, dadurch gekennzeichnet, daß sich die axiale Längs­richtung der Längsplattenelemente (25₁) parallel zur Richtung (a bzw. b) der Verschiebebean­spruchung erstreckt.12. Lining plate according to claim 11, characterized in that the axial longitudinal direction of the longitudinal plate elements (25₁) extends parallel to the direction (a or b) of the displacement load. 13. Auskleidungsplatte nach einem der voran­gehenden Ansprüche, dadurch gekennzeichnet, daß zur Sicherung gegen Relativverschiebung die Ver­ schleiß- oder die Trägerplatte (25; 24) an min­destens einem äußeren Rand der Auskleidungsplatte (22; 23) einen in eine Ausnehmung (54) der jeweils anderen Platte (24; 25) eingreifenden, quer zu den aneinanderliegenden Großflächen (27, 28) vorragenden Vorsprung (49) aufweisen, welcher eine etwa quer zur Plattenschmalfläche (36, 37) verlaufende Gewindebohrung (52) mit einer Schraube (50) aufweist, deren freies Ende (51) sich an einer mit spitzem Winkel (ß) zu den anliegenden Großflächen (27, 28) verlaufenden Hinterschneidungsfläche (53) der Ausnehmung (54) abstützt.13. Lining plate according to one of the preceding claims, characterized in that the Ver to secure against relative displacement wear or the carrier plate (25; 24) on at least one outer edge of the lining plate (22; 23) engaging in a recess (54) of the other plate (24; 25) transversely to the adjacent large surfaces (27, 28) projecting projection (49), which has an approximately transverse to the narrow plate surface (36, 37) threaded bore (52) with a screw (50), the free end (51) of which is at an acute angle (ß) to the adjacent large surfaces (27, 28) extending undercut surface (53) of the recess (54) is supported. 14. Auskleidungsplatte nach Anspruch 13, dadurch gekennzeichnet, daß der Vorsprung der einen Platte (z.B. 25) eine randliche Schulter (49) bildet, während die Ausnehmung (54) der anderen Platte (z.B. 24) eine eine einseitige schwalbenschwanzförmige Hinterschneidungsfläche (53) aufweisende Kehle (54) bildet.14. Lining plate according to claim 13, characterized in that the projection of one plate (eg 25) forms an edge shoulder (49), while the recess (54) of the other plate (eg 24) has a one-sided dovetail-shaped undercut surface (53) Throat (54) forms. 15. Auskleidungsplatte nach Anspruch 14, dadurch gekennzeichnet, daß die Schulter (49) der Trägerplatte (24) und die Kehle (54) der Ver­schleißplatte (25) zugeordnet sind.15. lining plate according to claim 14, characterized in that the shoulder (49) of the carrier plate (24) and the throat (54) of the wear plate (25) are assigned.
EP88118049A 1987-10-31 1988-10-29 Lining for the moulding chamber of flaskless moulding machines Expired - Lifetime EP0315087B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88118049T ATE60530T1 (en) 1987-10-31 1988-10-29 LINING PLATE FOR THE MOLDING SPACE OF BOXLESS MOLDING MACHINES.

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 (en) 1987-10-31 1988-10-27

Publications (2)

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

Family

ID=25861328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118049A Expired - Lifetime EP0315087B1 (en) 1987-10-31 1988-10-29 Lining for the moulding chamber of flaskless moulding machines

Country Status (7)

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

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EP0661121A1 (en) * 1993-12-28 1995-07-05 CARL AUG. PICARD GMBH & CO. KG. Lining plate for moulding chambers
EP1488872A1 (en) * 2003-06-17 2004-12-22 Böhler Bleche Multilayer GmbH Device for the manufacture of casting moulds
WO2012163434A1 (en) * 2011-05-27 2012-12-06 Carl Aug. Picard GmbH Wear part for fastening to a construction part, in particular a wear plate or strip for a foundry machine

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US5465843A (en) * 1994-02-03 1995-11-14 Rehrig Pacific Company Nestable display crate for bottles or the like
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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
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
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EP1488872A1 (en) * 2003-06-17 2004-12-22 Böhler Bleche Multilayer GmbH Device for the manufacture of casting moulds
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WO2012163434A1 (en) * 2011-05-27 2012-12-06 Carl Aug. Picard GmbH Wear part for fastening to a construction part, in particular a wear plate or strip for a foundry machine

Also Published As

Publication number Publication date
EP0315087B1 (en) 1991-01-30
DK263389D0 (en) 1989-05-30
DK263389A (en) 1989-05-30
WO1989003737A1 (en) 1989-05-05
JP2649567B2 (en) 1997-09-03
DE3861714D1 (en) 1991-03-07
DK171914B1 (en) 1997-08-11
US4997025A (en) 1991-03-05
ES2021418B3 (en) 1991-11-01
JPH02501906A (en) 1990-06-28
DE3836622C1 (en) 1989-06-08

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