EP0578938A1 - Cutting device on an extruder for making hollow blocks - Google Patents

Cutting device on an extruder for making hollow blocks Download PDF

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Publication number
EP0578938A1
EP0578938A1 EP93107345A EP93107345A EP0578938A1 EP 0578938 A1 EP0578938 A1 EP 0578938A1 EP 93107345 A EP93107345 A EP 93107345A EP 93107345 A EP93107345 A EP 93107345A EP 0578938 A1 EP0578938 A1 EP 0578938A1
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EP
European Patent Office
Prior art keywords
cutting
strand
flank
cutting loop
loop
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Granted
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EP93107345A
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German (de)
French (fr)
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EP0578938B1 (en
Inventor
Fritz Weber
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Erlus Baustoffwerke AG
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Erlus Baustoffwerke AG
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Publication of EP0578938A1 publication Critical patent/EP0578938A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/12Apparatus or processes for treating or working the shaped or preshaped articles for removing parts of the articles by cutting

Definitions

  • the invention relates to a cutting device on an extrusion system for producing perforated bricks with the features according to the preamble of claim 1.
  • Perforated bricks of larger dimensions and thus greater weight are expediently provided with handle recesses provided on the end faces to facilitate handling. These handle recesses are already incorporated in the manufacture of the perforated brick.
  • a cutting device is known in which a cutting wire formed into a loop is inserted and pulled back by an actuating device into the lateral strand flanks of the strand of material emerging from the extruder, so that the later recesses forming the recesses through the handle Movement of the strand itself can be generated (DE-OS 35 41 280).
  • the object of the invention is to improve a cutting device of this type in a simple manner so that properly bordered handle recesses can be produced.
  • the invention is based on the consideration that the cutting loop - especially after a certain wear of the cutting edge - is elastically deflected in the conveying direction by the moving strand, whereby inevitable inhomogeneities of the raw material in the strand cause an uneven movement when piercing and withdrawing the cutting loop can be out of line.
  • Such uneven movements and the resulting uncontrolled tearing out of the strand surface during the return movement are avoided according to the invention in that the cutting loop is deflected from the outset through the curve from its straight line of motion in the strand movement direction immediately before penetrating the strand flank and is thus elastically pretensioned.
  • a restoring force acting counter to the strand conveying direction is built up, which is so great that the cutting forces that occur cannot deflect the cutting loop in the strand conveying direction, or only to an insignificant extent.
  • the curve which causes the cutting loop to deflect immediately before it is inserted into the strand flank can be a flat inclined surface rising in the strand conveying direction, on its lower - i.e. closer to the mouthpiece of the extruder - part of the front section of the cutting loop attaches during the plunge movement and then slides along this inclined surface.
  • the cutting device consists essentially of a frame 1, which is attached to the mouthpiece-side part of an only schematically drawn extruder 2 so that a whole designated 3 actuating device for two rectangular cutting loops 4 directly at the outlet of the Raw material strand 5 from the mouthpiece 6 of the extruder 2 is arranged.
  • the cutting loops 4 are the assigned opposite lateral flanks of the strand 5 and can be controlled by the actuating device 3, cyclically controlled, inserted into the strand flanks, held in it for a while and then withdrawn again.
  • the strand conveying movement to the left in FIG. 2
  • a piece of raw material is cut out during the holding period of the cutting loops 4 in the strand and removed therefrom when the cutting loops are withdrawn.
  • the cutting loops 4 are each fastened to the end of a swivel arm 8 which can be swiveled about an axis 9 directed parallel to the strand conveying direction.
  • a piston / cylinder arrangement 10 acts on the swivel arm 8. By extending the piston rod 11, the swivel arm and thus the cutting loop 4 is moved towards the strand flank and pressed into it; by retracting the piston rod 11, the cutting loop 4 is retracted again from the strand flank.
  • Each rectangular loop 4 is assigned a component 12 fastened to the mouthpiece 6, which has a deflection curve for the cutting loop 4.
  • the component 12 consists essentially of a vertical flat piece 13, on the rear side facing the mouthpiece 6 of which two bolts 14 are welded, which are fixed in ring plates 15 of the mouthpiece 6 by nuts 16.
  • the flat piece 13 has the cross section shown in Fig. 4, i.e. it has a flat inclined surface 20 which serves as a deflection curve for the front cutting edge 21 of the cutting loop 4.
  • the inclined surface 20 rises in the direction of the strand movement X (FIG. 4).
  • the ring tabs 15 are dimensioned such that the component 12 lies in the assembled state with the inclined surface 20 in the path of movement of the associated cutting loop 4. Due to the alignment of the pivot axis 9 parallel to the strand movement direction, this movement path is theoretically oriented perpendicular to the strand longitudinal axis.
  • the edge 22 of the side surface of the flat piece 13 facing the strand, which is downstream with respect to the strand movement, is formed with sharp edges.
  • the cutting edge 21 of the cutting loop 4 slides past this edge, which is located immediately adjacent to the strand flank, when it is pulled back, so that a shear effect is thereby created. This shear effect causes the strand skin to be cut smoothly and prevents parts from breaking out or being torn out of the strand flank.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Scissors And Nippers (AREA)

Abstract

A cutting device on an extruder for producing perforated bricks. The cutting device has a cutting loop (4) for cutting out clearances from the extrudate flank, as a result of which handling clearances are obtained on the finished perforated bricks. An actuating apparatus (3) moves the cutting loop back and forth in a cyclically controlled manner in a direction perpendicular to the extrudate flank. In the movement path of the cutting loop and directly next to the extrudate flank there is arranged a cam (20) which deflects, and thus elastically prestresses, the cutting loop, before penetration into the extrudate flank, in the movement direction of the extrudate (5). <IMAGE>

Description

Die Erfindung betrifft eine Schneidevorrichtung an einer Strangpreßanlage zur Herstellung von Lochziegeln mit den Merkmalen gemäß dem Oberbegriff des Anspruches 1.The invention relates to a cutting device on an extrusion system for producing perforated bricks with the features according to the preamble of claim 1.

Lochziegel grösserer Abmessungen und damit grösseren Gewichts werden zur Erleichterung der Handhabung zweckmässig mit an den Stirnflächen vorgesehenen Griffausnehmungen versehen. Diese Griffausnehmungen werden schon bei der Herstellung der Lochziegel eingearbeitet. Für Lochziegel, die im Strangpreßverfahren hergestellt werden, ist eine Schneidevorrichtung bekannt, bei der ein zu einer Schlinge geformter Schneidedraht durch eine Betätigungsvorrichtung in die seitlichen Strangflanken des aus der Strangpresse austretenden Materialstranges eingestochen und wieder zurückgezogen wird, so daß die späteren Griffausnehmungen bildende Ausnehmungen durch die Bewegung des Stranges selbst erzeugt werden (DE-OS 35 41 280). Dabei hat sich gezeigt, daß - insbesondere nach einem gewissen Verschleiß der Schneidkante der Schneidschlinge - diejenigen Kanten und Flächen der Ausnehmung, die beim Einstechen und beim Rückziehen der Schneidschlinge in den Strangflanken entstehen, unsauber sein können. Die Kanten oder Flächen verlaufen dann uneben und weisen Fahnen oder scharfkantige Ausrisse auf, die Verletzungen an den Fingern hervorrufen können.Perforated bricks of larger dimensions and thus greater weight are expediently provided with handle recesses provided on the end faces to facilitate handling. These handle recesses are already incorporated in the manufacture of the perforated brick. For perforated bricks, which are produced in the extrusion process, a cutting device is known in which a cutting wire formed into a loop is inserted and pulled back by an actuating device into the lateral strand flanks of the strand of material emerging from the extruder, so that the later recesses forming the recesses through the handle Movement of the strand itself can be generated (DE-OS 35 41 280). It has been shown that - especially after a certain wear of the cutting edge of the cutting loop - those edges and surfaces of the recess that arise in the strand flanks when the cutting loop is inserted and withdrawn can be unclean. The edges or surfaces then run unevenly and have flags or sharp-edged tears that can cause injuries to the fingers.

Aufgabe der Erfindung ist es, eine Schneidevorrichtung dieser Art auf einfache Weise so zu verbessern, daß einwandfrei berandete Griffausnehmungen erzeugt werden können.The object of the invention is to improve a cutting device of this type in a simple manner so that properly bordered handle recesses can be produced.

Erfindungsgemäß wird dies erreicht durch die im Kennzeichen des Anspruches 1 angegebene Ausgestaltung.According to the invention this is achieved by the embodiment specified in the characterizing part of claim 1.

Die Erfindung beruht auf der Überlegung, daß die Schneidschlinge - insbesondere nach einem gewissen Verschleiß der Schneidkante - durch den sich bewegenden Strang in dessen Förderrichtung elastisch ausgelenkt wird, wobei unvermeidliche Inhomogenitäten des Rohmaterials im Strang Ursache für eine ungleichmässige Bewegung beim Einstechen und erneuten Herausziehen der Schneidschlinge aus dem Strang sein können. Derartige ungleichmässige Bewegungen und dadurch bedingtes unkontrolliertes Ausreissen der Strangoberfläche bei der Rückbewegung werden erfindungsgemäß dadurch vermieden, daß die Schneidschlinge von vornherein unmittelbar vor dem Eindringen in die Strangflanke durch die Kurve aus ihrer geradlinigen Bewegungsbahn in Strangbewegungsrichtung ausgelenkt und dadurch elastisch vorgespannt wird. Durch die Vorspannung wird in der Schneidschlinge eine entgegen der Strangförderrichtung wirkende Rückstellkraft aufgebaut, die so groß ist, daß die auftretenden Schneidkräfte die Schneidschlinge nicht oder nur noch unwesentlich weiter in Strangförderrichtung auslenken können.The invention is based on the consideration that the cutting loop - especially after a certain wear of the cutting edge - is elastically deflected in the conveying direction by the moving strand, whereby inevitable inhomogeneities of the raw material in the strand cause an uneven movement when piercing and withdrawing the cutting loop can be out of line. Such uneven movements and the resulting uncontrolled tearing out of the strand surface during the return movement are avoided according to the invention in that the cutting loop is deflected from the outset through the curve from its straight line of motion in the strand movement direction immediately before penetrating the strand flank and is thus elastically pretensioned. By means of the pretensioning, a restoring force acting counter to the strand conveying direction is built up, which is so great that the cutting forces that occur cannot deflect the cutting loop in the strand conveying direction, or only to an insignificant extent.

Mit besonderem Vorteil ist außerdem an der dem Strang zugewendeten Rückseite der Kurve eine Abstreifkante vorgesehen, an welcher beim Zurückziehen der Schneidschlinge deren vordere Schneidkante entlang gleitet und dadurch eine Scherenwirkung auf die Stranghaut ausübt. Da diese Abstreifkante ganz nahe an der Strangflanke liegt, wird die Stranghaut auf diese Weise sauber durchtrennt und Ausreißerscheinungen können nicht auftreten.It is also particularly advantageous to provide a wiping edge on the back of the curve facing the strand, on which the cutting edge slides along the front cutting edge when the loop is pulled back, thereby exerting a scissor effect on the strand skin. Since this scraper edge is very close to the strand flank, the strand skin is cut cleanly in this way and there are no signs of tearing.

Die Kurve, die die Auslenkung der Schneidschlinge unmittelbar vor dem Einstechen in die Strangflanke bewirkt, kann im einfachsten Fall eine in Strangförderrichtung ansteigende ebene Schrägfläche sein, auf deren niederem - d.h. dem Mundstück der Strangpresse näheren - Teil der vordere Abschnitt der Schneidschlinge bei der Einstechbewegung aufsetzt und daraufhin längs dieser Schrägfläche gleitet.In the simplest case, the curve which causes the cutting loop to deflect immediately before it is inserted into the strand flank can be a flat inclined surface rising in the strand conveying direction, on its lower - i.e. closer to the mouthpiece of the extruder - part of the front section of the cutting loop attaches during the plunge movement and then slides along this inclined surface.

Ein Ausführungsbeispiel der erfindungsgemässen Schneidevorrichtung ist anhand der beiliegenden Zeichnungen näher erläutert. In den Zeichnungen zeigen:

  • Fig. 1 eine schematische Vorderansicht der Schneidevorrichtung, gesehen entgegen der Strangförderrichtung;
  • Fig. 2 eine Seitenansicht der Schneidevorrichtung;
  • Fig. 3 eine der Fig. 2 entsprechende Seitenansicht des die Kurve tragenden Bauteils in etwa natürlicher Grösse, jedoch aus zeichnerischen Gründen abgeschnitten dargestellt, und
  • Fig. 4 einen Querschnitt des die Kurve tragenden Bauteils längs der Linie IV-IV in Fig. 3.
An embodiment of the cutting device according to the invention is explained in more detail with reference to the accompanying drawings. The drawings show:
  • Figure 1 is a schematic front view of the cutting device, seen against the strand conveying direction.
  • Fig. 2 is a side view of the cutting device;
  • Fig. 3 is a side view corresponding to Fig. 2 of the component bearing the curve in approximately natural size, but shown cut off for drawing reasons, and
  • 4 shows a cross section of the component carrying the curve along the line IV-IV in FIG. 3.

Gemäß der Darstellung in Fig. 1 besteht die Schneidevorrichtung im wesentlichen aus einem Rahmengestell 1, das an dem mundstückseitigen Teil einer nur schematisch gezeichneten Strangpresse 2 so befestigt ist, daß eine im Ganzen mit 3 bezeichnete Betätigungsvorrichtung für zwei Rechteck-Schneidschlingen 4 unmittelbar am Austritt des Rohmaterialstranges 5 aus dem Mundstück 6 der Strangpresse 2 angeordnet ist. Die Schneidschlingen 4 sind den gegenüberliegenden seitlichen Flanken des Stranges 5 zugeordnet und können durch die Betätigungsvorrichtung 3, taktweise gesteuert, in die Strangflanken eingestochen, eine Zeit lang darin gehalten und dann wieder zurückgezogen werden. Infolge der Strangförderbewegung (nach links in Fig. 2) wird während der Haltedauer der Schneidschlingen 4 im Strang je ein Stück Rohmaterial ausgeschnitten und beim Zurückziehen der Schneidschlingen daraus entfernt.According to the representation in Fig. 1, the cutting device consists essentially of a frame 1, which is attached to the mouthpiece-side part of an only schematically drawn extruder 2 so that a whole designated 3 actuating device for two rectangular cutting loops 4 directly at the outlet of the Raw material strand 5 from the mouthpiece 6 of the extruder 2 is arranged. The cutting loops 4 are the assigned opposite lateral flanks of the strand 5 and can be controlled by the actuating device 3, cyclically controlled, inserted into the strand flanks, held in it for a while and then withdrawn again. As a result of the strand conveying movement (to the left in FIG. 2), a piece of raw material is cut out during the holding period of the cutting loops 4 in the strand and removed therefrom when the cutting loops are withdrawn.

Die Schneidschlingen 4 sind jeweils am Ende eines Schwenkarmes 8 befestigt, der um eine parallel zur Strangförderrichtung gerichtete Achse 9 schwenkbar ist. An dem Schwenkarm 8 greift eine Kolben/Zylinder-Anordnung 10 an. Durch das Ausfahren der Kolbenstange 11 wird der Schwenkarm und damit die Schneidschlinge 4 auf die Strangflanke zu bewegt und in diese eingedrückt; durch das Einfahren der Kolbenstange 11 erfolgt die erneute Zurückziehung der Schneidschlinge 4 aus der Strangflanke.The cutting loops 4 are each fastened to the end of a swivel arm 8 which can be swiveled about an axis 9 directed parallel to the strand conveying direction. A piston / cylinder arrangement 10 acts on the swivel arm 8. By extending the piston rod 11, the swivel arm and thus the cutting loop 4 is moved towards the strand flank and pressed into it; by retracting the piston rod 11, the cutting loop 4 is retracted again from the strand flank.

Jeder Rechteckschlinge 4 ist ein an dem Mundstück 6 befestigtes Bauteil 12 zugeordnet, das eine Ablenkkurve für die Schneidschlinge 4 aufweist. Das Bauteil 12 besteht im wesentlichen aus einem vertikalen Flachstück 13, an dessen dem Mundstück 6 zugewendeter Rückseite zwei Schraubenbolzen 14 angeschweißt sind, die in Ringlaschen 15 des Mundstückes 6 durch Muttern 16 fixiert sind. Das Flachstück 13 hat den aus Fig. 4 ersichtlichen Querschnitt, d.h. es weist eine ebene Schrägfläche 20 auf, die als Ablenkkurve für die vordere Schneidkante 21 der Schneidschlinge 4 dient. Die Schrägfläche 20 verläuft ansteigend in Richtung der Strangbewegung X (Fig. 4).Each rectangular loop 4 is assigned a component 12 fastened to the mouthpiece 6, which has a deflection curve for the cutting loop 4. The component 12 consists essentially of a vertical flat piece 13, on the rear side facing the mouthpiece 6 of which two bolts 14 are welded, which are fixed in ring plates 15 of the mouthpiece 6 by nuts 16. The flat piece 13 has the cross section shown in Fig. 4, i.e. it has a flat inclined surface 20 which serves as a deflection curve for the front cutting edge 21 of the cutting loop 4. The inclined surface 20 rises in the direction of the strand movement X (FIG. 4).

Die Ringlaschen 15 sind so bemessen, daß das Bauteil 12 im montierten Zustand mit der Schrägfläche 20 in der Bewegungsbahn der zugehörigen Schneidschlinge 4 liegt. Aufgrund der zur Strangbewegungsrichtung parallelen Ausrichtung der Schwenkachse 9 ist diese Bewegungsbahn theoretisch senkrecht zur Stranglängsachse ausgerichtet.The ring tabs 15 are dimensioned such that the component 12 lies in the assembled state with the inclined surface 20 in the path of movement of the associated cutting loop 4. Due to the alignment of the pivot axis 9 parallel to the strand movement direction, this movement path is theoretically oriented perpendicular to the strand longitudinal axis.

Aufgrund unvermeidlicher Elastizitäten und Spiele im Schwenkarm 8 und in der Schneidschlinge 4 selbst ist jedoch eine elastische Verstellung in Richtung X der Strangbewegung möglich. Bei der Annäherung der Schneidschlinge 4 an die Strangflanke trifft die Schneidkante 21 auf dem niederen Ende der Schrägfläche 20 auf, wird jedoch im wqeiteren Verlauf der Annäherungsbewegung parallel zur Strangbewegungsrichtung mehr und mehr ausgelenkt. Hierdurch werden vorhandene Spiele zwischen Schwenkarm und Schwenkachse 9 aufgezehrt und außerdem eine elastische Vorspannung in diesen Teilen sowie in der Schneidschlinge 4 selbst erzeugt, bevor die Schneidkante in die unmittelbar hinter dem Flachstück 13 vorbeilaufende Strangflanke eindringt. Aufgrund dieser Vorspannung erfolgt durch die Schneidkraft im Rohmaterial des Stranges nur noch eine geringe oder überhaupt keine zusätzliche Auslenkung der Schneidschlinge 4 in Richtung der Strangbewegung.Due to the inevitable elasticities and play in the swivel arm 8 and in the cutting loop 4 itself, however, an elastic adjustment in the direction X of the strand movement is possible. When the cutting loop 4 approaches the strand flank, the cutting edge 21 hits the lower end of the inclined surface 20, but is increasingly deflected parallel to the direction of the strand movement as the approach movement continues. As a result, existing games between swivel arm and swivel axis 9 are consumed and, in addition, an elastic pretension is generated in these parts and in the cutting loop 4 itself, before the cutting edge penetrates into the strand flank running immediately behind the flat piece 13. Because of this pretension, the cutting force in the raw material of the strand causes little or no additional deflection of the cutting loop 4 in the direction of the strand movement.

Die bezüglich der Strangbewegung stromabwärts liegende Kante 22 der dem Strang zugewendeten Seitenfläche des Flachstückes 13 ist scharfkantig ausgebildet. An dieser Kante, die der Strangflanke unmittelbar benachbart liegt, gleitet die Schneidkante 21 der Schneidschlinge 4 beim Zurückziehen vorbei, so daß dadurch ein Schereffekt entsteht. Dieser Schereffekt bewirkt ein glattes Durchtrennen der Stranghaut und verhindert ein Ausbrechen oder Ausreissen von Teilen aus der Strangflanke.The edge 22 of the side surface of the flat piece 13 facing the strand, which is downstream with respect to the strand movement, is formed with sharp edges. The cutting edge 21 of the cutting loop 4 slides past this edge, which is located immediately adjacent to the strand flank, when it is pulled back, so that a shear effect is thereby created. This shear effect causes the strand skin to be cut smoothly and prevents parts from breaking out or being torn out of the strand flank.

Claims (4)

Schneidevorrichtung an einer Strangpreßanlage zur Herstellung von Lochziegeln, mit einer Schneidschlinge zum Ausschneiden von Ausnehmungen aus der Strangflanke, welche Griffausnehmungen an den fertigen Lochziegeln bilden, und mit einer Betätigungsvorrichtung, welche die Schneidschlinge taktweise gesteuert in Richtung senkrecht zur Strangflanke vor und zurück bewegt,
dadurch gekennzeichnet,
daß in der Bewegungsbahn der Schneidschlinge (4) und unmittelbar neben der Strangflanke eine Kurve (20) angeordnet ist, welche die Schneidschlinge vor dem Eindringen in die Strangflanke in Bewegungsrichtung des Stranges (5) auslenkt und dadurch elastisch vorspannt.
Cutting device on an extrusion system for the production of perforated bricks, with a cutting loop for cutting out recesses from the strand flank, which form grip recesses on the finished perforated bricks, and with an actuating device which moves the cutting loop back and forth in a controlled manner in the direction perpendicular to the strand flank,
characterized by
that a curve (20) is arranged in the path of movement of the cutting loop (4) and immediately next to the strand flank, which deflects the cutting loop in the direction of movement of the strand (5) before penetrating into the strand flank and thereby elastically pretensions.
Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Schneidschlinge Rechteckform hat und die Kurve eine parallel zur vorderen Schneidkante (21) der Schneidschlinge angeordnete Schrägfläche ist.
Device according to claim 1,
characterized by
that the cutting loop has a rectangular shape and the curve is an inclined surface arranged parallel to the front cutting edge (21) of the cutting loop.
Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß an der dem Strang zugewendeten Seite der Kurve eine Abstreifkante (22) ausgebildet ist, über welche die Schneidschlinge bei der Rückbewegung von dem Strang hinweggleitet.
Device according to claim 1 or 2,
characterized by
that a stripping edge (22) is formed on the side of the curve facing the strand, over which the cutting loop slides away from the strand during the return movement.
Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet,
daß die Abstreifkante an dem die Kurve tragenden Bauteil (12) ausgebildet ist.
Device according to claim 3,
characterized by
that the scraper edge is formed on the component (12) carrying the curve.
EP93107345A 1992-07-17 1993-05-06 Cutting device on an extruder for making hollow blocks Expired - Lifetime EP0578938B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9209601U DE9209601U1 (en) 1992-07-17 1992-07-17 Cutting device on an extrusion press for the production of perforated bricks
DE9209601U 1992-07-17

Publications (2)

Publication Number Publication Date
EP0578938A1 true EP0578938A1 (en) 1994-01-19
EP0578938B1 EP0578938B1 (en) 1997-02-26

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EP93107345A Expired - Lifetime EP0578938B1 (en) 1992-07-17 1993-05-06 Cutting device on an extruder for making hollow blocks

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DE (2) DE9209601U1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19924708A1 (en) * 1999-05-28 2000-12-21 Tonwaren U Falzziegelfabrik Wa Method and appliance for producing bricks involve cutting off blank with cutter, dryer and burner, molding appliance for filler-opening, and conveyor belt
CN112405781A (en) * 2020-10-09 2021-02-26 安徽鋐硕绿色建材科技有限公司 Automatic coal gangue hollow brick molding equipment and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111168864B (en) * 2020-01-20 2021-06-29 惠州市建达实业有限公司 Cutting system for aerated brick edge leather

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1650832A (en) * 1927-04-26 1927-11-29 James W Eckley Brick-sizing machine
US3878744A (en) * 1974-05-08 1975-04-22 Metalcut Int Inc Cutting method and apparatus with saw blade deflection
DE3541280A1 (en) * 1985-06-21 1987-01-02 Erlus Baustoffwerke Wall block with gripping aid and extrusion process and unit for producing the same
EP0276447A1 (en) * 1987-01-10 1988-08-03 Erlus Baustoffwerke AG Hollow blocks with gripping aids, and apparatus for making them
EP0543348A1 (en) * 1991-11-22 1993-05-26 Ytong Ag Building block with a grip to allow lifting, and process and device for making the grip

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1650832A (en) * 1927-04-26 1927-11-29 James W Eckley Brick-sizing machine
US3878744A (en) * 1974-05-08 1975-04-22 Metalcut Int Inc Cutting method and apparatus with saw blade deflection
DE3541280A1 (en) * 1985-06-21 1987-01-02 Erlus Baustoffwerke Wall block with gripping aid and extrusion process and unit for producing the same
EP0276447A1 (en) * 1987-01-10 1988-08-03 Erlus Baustoffwerke AG Hollow blocks with gripping aids, and apparatus for making them
EP0543348A1 (en) * 1991-11-22 1993-05-26 Ytong Ag Building block with a grip to allow lifting, and process and device for making the grip

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19924708A1 (en) * 1999-05-28 2000-12-21 Tonwaren U Falzziegelfabrik Wa Method and appliance for producing bricks involve cutting off blank with cutter, dryer and burner, molding appliance for filler-opening, and conveyor belt
CN112405781A (en) * 2020-10-09 2021-02-26 安徽鋐硕绿色建材科技有限公司 Automatic coal gangue hollow brick molding equipment and method
CN112405781B (en) * 2020-10-09 2021-11-05 安徽鋐硕绿色建材科技有限公司 Automatic coal gangue hollow brick molding equipment and method

Also Published As

Publication number Publication date
DE59305517D1 (en) 1997-04-03
DE9209601U1 (en) 1992-10-22
EP0578938B1 (en) 1997-02-26

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