EP0667220A1 - Mould for concrete blocks - Google Patents

Mould for concrete blocks Download PDF

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Publication number
EP0667220A1
EP0667220A1 EP94114990A EP94114990A EP0667220A1 EP 0667220 A1 EP0667220 A1 EP 0667220A1 EP 94114990 A EP94114990 A EP 94114990A EP 94114990 A EP94114990 A EP 94114990A EP 0667220 A1 EP0667220 A1 EP 0667220A1
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EP
European Patent Office
Prior art keywords
mold
guide rails
bearings
intermediate walls
walls
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.)
Withdrawn
Application number
EP94114990A
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German (de)
French (fr)
Inventor
Rudolf Braungardt
Erwin Schmucker
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.)
Kobra Formen GmbH
Original Assignee
Kobra Formen und Anlagenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kobra Formen und Anlagenbau GmbH filed Critical Kobra Formen und Anlagenbau GmbH
Priority to DE9421556U priority Critical patent/DE9421556U1/en
Publication of EP0667220A1 publication Critical patent/EP0667220A1/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/24—Unitary mould structures with a plurality of moulding spaces, e.g. moulds divided into multiple moulding spaces by integratable partitions, mould part structures providing a number of moulding spaces in mutual co-operation
    • B28B7/241—Detachable assemblies of mould parts providing only in mutual co-operation a number of complete moulding spaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
    • B28B7/0035—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding
    • B28B7/0041—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding the sidewalls of the mould being moved only parallelly away from the sidewalls of the moulded article

Definitions

  • the invention relates to a mold, in particular for the production of concrete blocks, with one or more mold nests which are delimited in the lateral direction by two side walls and in the longitudinal direction by two approximately vertical and parallel partition walls.
  • Shapes of this type consist of two fixed side parts that delimit the shape laterally. Between the side parts are several, transverse and spaced from each other partitions. This creates several rectangular or square mold nests arranged one after the other in the longitudinal direction, which are filled with concrete from above. To demold the finished molded part, the partitions are raised in the vertical direction. With these known shapes, it is therefore not possible to produce concrete blocks with undercuts.
  • the invention has for its object to provide a form of the type mentioned, which allows the demolding of concrete blocks with undercuts, especially in a form with several mold nests, in a simple manner in a very short time.
  • this object is achieved in that the partitions are horizontally extendable in the longitudinal direction of the mold for demolding the finished molded part.
  • the simultaneous demolding of all the molded parts is achieved in that the partitions, which are extendable in the same direction, are firmly connected to one another by at least two guide rails which are displaceably mounted in side parts of the mold.
  • connection between the partition walls which can be extended in the same direction is designed to be detachable.
  • these are formed by spacer sleeves which are arranged between the partitions which can be extended in the same direction and are penetrated by a clamping screw which braces the partitions with one another.
  • a particularly space-saving arrangement is achieved in that the guide rails with the spacer sleeves are mounted in a longitudinally displaceable manner in two bearings which are arranged next to one another on each long side of the mold in the side parts with a small spacing.
  • one end of the tensioning screws is detachably connected to a piston of a hydraulic cylinder each attached to the end walls of the mold, while the other end of the tensioning screws carries a tensioning nut.
  • clamping nuts have the same outer diameter as the spacer sleeves and are displaceably mounted at opposite ends in the bearings of the side parts.
  • recesses are made on the inside of the side parts in the area of the extendable partitions.
  • the externally mounted partition walls each have a through hole in the area of the bearings for the inner guide rails, which are penetrated by the inner guide rails in a freely movable manner.
  • the bearings for the guide rails are arranged in bearing blocks which are detachably connected to the mold frame.
  • interchangeable bearing bushes are used to replace the bearings in the event of signs of wear, which can be inserted into corresponding bores in the bearing blocks or the mold frame.
  • the advantages achieved by the invention are, in particular, that only a total of four hydraulic cylinders are required regardless of the number of partitions for driving them.
  • the hydraulic cylinders are each arranged at the end of the mold and are therefore easily accessible. This considerably simplifies assembly, disassembly, cleaning and repair work.
  • the arrangement of the clamping screws in the axial direction of the hydraulic cylinder means that there are no additional bending moments in the drive unit since only tensile and compressive stresses occur.
  • the distance between the partitions is easily adjustable through the length of the spacer sleeves. All partitions that open in the same direction can be installed with just two clamping nuts. Due to the multiple storage of the partition walls, the acceleration forces caused by the shaking are introduced into the mold frame without deformation of the clamping screws. Since the storage runs over the entire length of the mold, tilting of the partition walls is impossible.
  • a mold 1 for the production of concrete blocks consists of a fixed mold frame 2 with two side parts 3 and two end walls 4. For the sake of simplicity, only one side of mold 1 is shown in FIG.
  • the shape 1 is divided in the longitudinal direction by a plurality of parallel intermediate walls 5, 5 ', 5 "and 6, 6', 6", which are arranged at a distance from one another transversely to the side parts 3. This results in three mold cavities 7 each lying between an intermediate wall 5, 5 ', 5 "and an intermediate wall 6, 6', 6", which are filled with concrete from above.
  • various inserts, not shown, are provided in accordance with the desired geometry of the concrete block, approximately parallel to the side parts 3 of the mold 1.
  • the mold frame 2 is covered at the top by a plate 2 '(FIG. 3) which has corresponding recesses (not shown) for filling the mold nests 7.
  • a plate 2 ' (FIG. 3) which has corresponding recesses (not shown) for filling the mold nests 7.
  • the mold frame 2 which is pulled up in the vertical direction for demolding, is kept open.
  • the intermediate walls 5, 6; 5 ', 6'; 5 “, 6” before pulling up the mold frame 2 in the longitudinal direction of the mold 1 in opposite directions.
  • the intermediate walls 5, 5 ', 5 "and 6, 6', 6" in the side parts 3 are mounted so as to be longitudinally displaceable. So that the partitions 5, 6; 5 ', 6'; 5 “, 6” can be moved apart at the same time, the extendable in the direction of arrow 8 are intermediate walls 5, 5 ', 5 "by guide rails 9 and in the opposite direction (arrow 10) extendable partitions 6, 6', 6" by guide rails 11 firmly connected.
  • the arranged on both sides of the substantially rectangular mold frame 2 guide rails 9 and 11 are formed by spacer sleeves 12 which are inserted between the intermediate walls 5, 5 ', 5 "and 6, 6', 6" and in inner bearings 13 and outer Bearings 14 of the side parts 3 are mounted for longitudinal displacement.
  • the spacer sleeves 12 are penetrated by clamping screws 15 and 16, which are passed through the intermediate walls 5, 5 ', 5 "and 6, 6', 6" and extend over the entire long side of the mold 1.
  • the threaded ends of the clamping screws 15 and 16 are screwed on the one hand into a threaded bore of a piston 17 of a hydraulic cylinder 18, which is fastened to the two opposite end walls 4.
  • Each clamping screw 15 or 16 is assigned a hydraulic cylinder 18 on both sides of the mold frame 2.
  • the other end of the clamping screws 15 and 16 is provided with a clamping nut 19, through which the intermediate walls 5, 5 ', 5 "and 6, 6', 6" are clamped together.
  • the guide rails 9 and 11 are supported in the inner and outer bearings 13, 14 by means of bearing sleeves 20 which are clamped together with the spacer sleeves 12 and whose outer diameter is somewhat larger than the outer diameter of the spacer sleeves 12.
  • the bearings 13 and 14 for the bearing sleeves 20 of the guide bars 9 and 11 are interrupted by four recesses 21, each in the area of the extendable partition walls 5; 6, 5 '; 6 ', 5 "and 6" in the side parts 3 are attached.
  • the recesses 21 allow the mobility of the partitions 5, 5 ', 5 "and 6, 6', 6" within the mold frame 3 and at the same time serve for the assembly and disassembly of the clamping sleeves 12, the clamping screws 15, 16 and the clamping nuts 19.
  • the opposite Displaceability of the guide rails 9 and 11 mounted next to one another requires that the inner guide rail 9 with its spacer sleeve 12 each pass through a through hole 22 of the externally mounted intermediate walls 6, 6 'in a freely movable manner.
  • the hydraulic cylinders 18 are simultaneously acted upon by a pressure medium.
  • the pistons 17 of the hydraulic cylinders 18 arranged on the one end wall 4 of the mold 1 pull the intermediate walls 5, 5 'and 5 "in the direction of the arrow 8, while the pistons 17 on the other end wall 4 pull the intermediate walls 6, 6' and 6 "pull apart in the opposite direction (arrow 10).
  • the molded parts can then be removed from the mold nests 7 and the mold cavity 7 can be closed again by closing the partitions 5, 5 ', 5 "and 6, 6', 6".
  • the size of the required longitudinal displaceability of the intermediate walls 5, 5 ', 5 "and 6, 6', 6" depends on the size of the undercuts on the molded part and is generally relatively small.
  • Fig. 5 of the drawing shows an embodiment of the invention, in which the bearings 13 and 14 for the guide bars 9 and 11 are arranged in bearing blocks 23 which are detachably connected to the mold frame 2, for example by screws.
  • the bearings 13 and 14 are formed by interchangeable bearing bushes 24.

Abstract

For removal of the produced mould part the intermediate walls (5,6) can be moved outwards in the longitudinal direction of the mould (11), with more than one mould next (7), the intermediate walls (5,5',5'',6,6',6'') movable outwards in the same direction (8,10) are connected with one another by at least two guide rails (9,11) longitudinally displaceable in the side parts (3) of the mould (1). The connection between the intermediate walls movable outwards in the same direction is releasable. The guide rails are formed by distance sockets (12) or bearing sockets (20), which are arranged between the intermediate walls movable outwards in the same direction and are penetrated by a clamp screw (15,16) tensioning the intermediate walls with one another.

Description

Die Erfindung betrifft eine Form, insbesondere zur Herstellung von Betonsteinen, mit einem oder mehreren Formnestern, die in seitlicher Richtung durch zwei Seitenwände und in Längsrichtung durch jeweils zwei etwa vertikale und parallel zueinander angeordnete Zwischenwände begrenzt sind.The invention relates to a mold, in particular for the production of concrete blocks, with one or more mold nests which are delimited in the lateral direction by two side walls and in the longitudinal direction by two approximately vertical and parallel partition walls.

Formen dieser Art bestehen aus zwei feststehenden, die Form seitlich begrenzenden Seitenteilen. Zwischen die Seitenteile sind mehrere, querverlaufende und mit Abstand von einander angeordnete Zwischenwände eingesetzt. Dadurch entstehen mehrere, in Längsrichtung nacheinander angeordnete, rechteckförmige oder quadratische Formnester, die von oben mit Beton gefüllt werden. Zum Entformen des fertigen Formteils werden die Zwischenwände in vertikaler Richtung hochgefahren. Mit diesen bekannten Formen ist es somit nicht möglich, Betonsteine mit Hinterschneidungen herzustellen.Shapes of this type consist of two fixed side parts that delimit the shape laterally. Between the side parts are several, transverse and spaced from each other partitions. This creates several rectangular or square mold nests arranged one after the other in the longitudinal direction, which are filled with concrete from above. To demold the finished molded part, the partitions are raised in the vertical direction. With these known shapes, it is therefore not possible to produce concrete blocks with undercuts.

Der Erfindung liegt die Aufgabe zugrunde, eine Form der eingangs erwähnten Art zu Schaffen, die das Entformen von Betonsteinen mit Hinterschneidungen, insbesondere bei einer Form mit mehreren Formnestern, auf einfache Art und Weise in kürzester Zeit ermöglicht.The invention has for its object to provide a form of the type mentioned, which allows the demolding of concrete blocks with undercuts, especially in a form with several mold nests, in a simple manner in a very short time.

Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, daß zum Entformen des fertigen Formteils die Zwischenwände in Längsrichtung der Form horizontal ausfahrbar sind.According to the invention, this object is achieved in that the partitions are horizontally extendable in the longitudinal direction of the mold for demolding the finished molded part.

Bei einer Form mit nehreren Formnestern wird das gleichzeitige Entformen aller Formteile dadurch erreicht, daß jeweils die in der gleichen Richtung ausfahrbaren Zwischenwände durch mindestens zwei in Seitenteilen der Form verschiebbar gelagerte Führungsholme fest miteinander verbunden sind.In the case of a mold with multiple mold nests, the simultaneous demolding of all the molded parts is achieved in that the partitions, which are extendable in the same direction, are firmly connected to one another by at least two guide rails which are displaceably mounted in side parts of the mold.

Zur Erleichterung der Montage und Demontage ist die Verbindung zwischen den in gleicher Richtung ausfahrbaren Zwischenwänden lösbar gestaltet.To facilitate assembly and disassembly, the connection between the partition walls which can be extended in the same direction is designed to be detachable.

Zum lösbaren Verspannen der Zwischenwände auf den Führungsholmen werden diese durch Distanzhülsen gebildet, die zwischen den in gleicher Richtung ausfahrbaren Zwischenwänden angeordnet sind und von einer die Zwischenwände miteinander verspannenden Spannschraube durchsetzt werden.For releasably bracing the partitions on the guide rails, these are formed by spacer sleeves which are arranged between the partitions which can be extended in the same direction and are penetrated by a clamping screw which braces the partitions with one another.

Eine besonders platzsparende Anordnung wird dadurch erreicht, daß die Führungsholme mit den Distanzhülsen in zwei an jeder Längsseite der Form in den Seitenteilen mit geringem Abstand nebeneinander angeordneten Lagern längsverschiebbar gelagert sind.A particularly space-saving arrangement is achieved in that the guide rails with the spacer sleeves are mounted in a longitudinally displaceable manner in two bearings which are arranged next to one another on each long side of the mold in the side parts with a small spacing.

Nach einem weiteren Merkmal der Erfindung ist jeweils ein Ende der Spannschrauben mit einem Kolben eines jeweils an den Stirnwänden der Form befestigten Hydraulikzylinders lösbar verbunden, während das andere Ende der Spannschrauben eine Spannmutter trägt.According to a further feature of the invention, one end of the tensioning screws is detachably connected to a piston of a hydraulic cylinder each attached to the end walls of the mold, while the other end of the tensioning screws carries a tensioning nut.

Eine zweckmäßige und vorteilhafte Lagerung der Enden der Führungsholme wird dadurch erreicht, daß die Spannmuttern den gleichen Außendurchmesser aufweisen wie die Distanzhülsen und in den Lagern der Seitenteile an entgegengesetzten Enden verschiebbar gelagert sind.An expedient and advantageous mounting of the ends of the guide rails is achieved in that the clamping nuts have the same outer diameter as the spacer sleeves and are displaceably mounted at opposite ends in the bearings of the side parts.

Zur Gewährleistung einer ausreichenden Bewegungsfreiheit der ausfahrbaren Zwischenwände und zur Verbesserung der Montage und Demontage sind an den Innenseiten der Seitenteile jeweils im Bereich der ausfahrbaren Zwischenwände Ausnehmungen angebracht.To ensure sufficient freedom of movement of the extendable partitions and to improve assembly and disassembly, recesses are made on the inside of the side parts in the area of the extendable partitions.

Nach einem weiteren Merkmal der Erfindung weisen die außen gelagerten Zwischenwände im Bereich der Lager für die innenliegenden Führungsholme je eine Durchgangsbohrung auf, die von den innenliegenden Führungsholmen frei beweglich durchsetzt werden.According to a further feature of the invention, the externally mounted partition walls each have a through hole in the area of the bearings for the inner guide rails, which are penetrated by the inner guide rails in a freely movable manner.

Um die Montage zu erleichtern und die Austauschbarkeit bei Beschädigungen zu gewährleisten, sind die Lager für die Führungsholme in Lagerblöcken angeordnet, die mit dem Formrahmen lösbar verbunden sind.In order to facilitate assembly and to ensure interchangeability in the event of damage, the bearings for the guide rails are arranged in bearing blocks which are detachably connected to the mold frame.

Zum Auswechseln der Lager bei Verschleißerscheinungen werden nach einem weiteren Merkmal der Erfindung austauschbare Lagerbüchsen verwendet, die in entsprechende Bohrungen der Lagerblöcke oder des Formrahmens einsetzbar sind.According to a further feature of the invention, interchangeable bearing bushes are used to replace the bearings in the event of signs of wear, which can be inserted into corresponding bores in the bearing blocks or the mold frame.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß unabhängig von der Anzahl der Zwischenwände für deren Antrieb nur noch insgesamt vier Hydraulikzylinder benötigt werden. Bei der erfindungsgemäßen Form sind die Hydraulikzylinder jeweils am Ende der Form angeordnet und somit leicht zugänglich. Dadurch werden Montage-, Demontage-, Reinigungs- und Reparaturarbeiten wesentlich erleichtert. Durch die Anordnung der Spannschrauben in Achsrichtung des Hydraulikzylinders entstehen keine zusätzlichen Biegemomente in der Antriebseinheit da nur Zug und Druckbeanspruchungen auftreten. Der Abstand der Zwischenwände ist durch die Länge der Distanzhülsen leicht einstellbar. Alle in gleicher Richtung auffahrende Zwischenwände können mit nur zwei Spannmuttern montiert werden. Durch die mehrfache Lagerung der Zwischenwände werden die Beschleunigungskräfte, die durch das Rütteln entstehen, ohne Verformung der Spannschrauben in den Formrahmen eingeleitet. Da die Lagerung über die ganze Formlänge verläuft, ist ein Verkanten der Zwischenwände ausgeschlossen.The advantages achieved by the invention are, in particular, that only a total of four hydraulic cylinders are required regardless of the number of partitions for driving them. In the mold according to the invention, the hydraulic cylinders are each arranged at the end of the mold and are therefore easily accessible. This considerably simplifies assembly, disassembly, cleaning and repair work. The arrangement of the clamping screws in the axial direction of the hydraulic cylinder means that there are no additional bending moments in the drive unit since only tensile and compressive stresses occur. The distance between the partitions is easily adjustable through the length of the spacer sleeves. All partitions that open in the same direction can be installed with just two clamping nuts. Due to the multiple storage of the partition walls, the acceleration forces caused by the shaking are introduced into the mold frame without deformation of the clamping screws. Since the storage runs over the entire length of the mold, tilting of the partition walls is impossible.

Die Erfindung ist in der folgenden Beschreibung und der Zeichnung, die ein Ausführungsbeispiel darstellt, näher erläutert. Es zeigen

  • Fig. 1 eine Draufsicht auf eine Seite der Form, teilweise geschnitten,
  • Fig. 2 eine vergrößerte Teil-Draufsicht auf die Form nach Fig. 1,
  • Fig. 3 einen Schnitt gemäß der Linie 111 - 111 in Fig. 2,
  • Fig. 4 einen Schnitt gemäß der Linie IV - IV in Fig. 2 und
  • Fig. 5 eine vergrößerte Teil-Draufsicht auf ein anderes Ausführungsbeispiel der Form
The invention is explained in more detail in the following description and the drawing, which represents an exemplary embodiment. Show it
  • 1 is a plan view of one side of the mold, partially in section,
  • 2 is an enlarged partial plan view of the shape of FIG. 1,
  • 3 shows a section along the line 111-111 in FIG. 2,
  • Fig. 4 is a section along the line IV - IV in Fig. 2 and
  • Fig. 5 is an enlarged partial plan view of another embodiment of the form

Eine Form 1 für die Herstellung von Betonsteinen besteht aus einem feststehenden Formrahmen 2 mit zwei Seitenteilen 3 und zwei Stirnwänden 4. Der Einfachheit halber ist in Fig. 1 von der Form 1 nur eine Seite dargestellt. Die Form 1 ist in Längsrichtung durch mehrere, quer zu den Seitenteilen 3 mit Abstand voneinander angeordnete, parallele Zwischenwände 5, 5', 5" und 6, 6', 6" unterteilt. Dadurch ergeben sich drei jeweils zwischen einer Zwischenwand 5, 5', 5" und einer Zwischenwand 6, 6', 6" liegende Formnester 7, die von oben mit Beton gefüllt werden. Zur seitlichen Begrenzung der Formnester 7 sind entsprechend der gewünschten Geometrie des Betonsteines veschiedene, etwa parallel zu den Seitenteilen 3 der Form 1 verlaufende, nicht dargestellte Einsätze vorgesehen. Zur Erhöhung der Stabilität ist der Formrahmen 2 nach oben durch eine Platte 2' (Fig. 3) abgedeckt, die zum Befüllen der Formnester 7 entsprechende, nicht dargestellte Aussparungen aufweist. Nach unten ist der Formrahmen 2, der zum Entformen in vertikaler Richtung nach oben hochgezogen wird, offen gehalten.A mold 1 for the production of concrete blocks consists of a fixed mold frame 2 with two side parts 3 and two end walls 4. For the sake of simplicity, only one side of mold 1 is shown in FIG. The shape 1 is divided in the longitudinal direction by a plurality of parallel intermediate walls 5, 5 ', 5 "and 6, 6', 6", which are arranged at a distance from one another transversely to the side parts 3. This results in three mold cavities 7 each lying between an intermediate wall 5, 5 ', 5 "and an intermediate wall 6, 6', 6", which are filled with concrete from above. For the lateral limitation of the mold cavities 7, various inserts, not shown, are provided in accordance with the desired geometry of the concrete block, approximately parallel to the side parts 3 of the mold 1. To increase stability, the mold frame 2 is covered at the top by a plate 2 '(FIG. 3) which has corresponding recesses (not shown) for filling the mold nests 7. At the bottom, the mold frame 2, which is pulled up in the vertical direction for demolding, is kept open.

Zum Entformen der in den Formnestern 7 erzeugten, fertigen Formteile, die in der Regel auch Hinterschneidungen aufweisen, müssen die Zwischenwände 5, 6; 5', 6'; 5", 6" vor dem Hochziehen des Formrahmens 2 in Längsrichtung der Form 1 in entgegengesetzten Richtungen auseinandergefahren werden. Zu diesem Zweck sind die Zwischenwände 5, 5', 5" und 6, 6', 6" in den Seitenteilen 3 längsverschiebbar gelagert. Damit die Zwischenwände 5, 6; 5', 6'; 5", 6" gleichzeitig auseinandergefahren werden können, sind die in Richtung des Pfeiles 8 ausfahrbaren Zwischenwände 5, 5', 5" durch Führungsholme 9 und die in der entgegengesetzten Richtung (Pfeil 10) ausfahrbaren Zwischenwände 6, 6', 6" durch Führungsholme 11 fest miteinander verbunden. Die zu beiden Seiten des im wesentlichen rechteckigen Formrahmens 2 angeordneten Führungsholme 9 und 11 werden durch Distanzhülsen 12 gebildet, die zwischen die Zwischenwände 5, 5', 5" bzw. 6, 6', 6" eingesetzt werden und in inneren Lagern 13 und äußeren Lagern 14 der Seitenteile 3 längsverschiebbar gelagert sind. Die Distanzhülsen 12 sind von Spannschrauben 15 bzw. 16 durchsetzt, die durch die Zwischenwände 5, 5', 5" bzw. 6, 6', 6" hindurchgeführt sind und sich über die ganze Längsseite der Form 1 erstrecken. Die mit einem Gewinde versehenen Enden der Spannschrauben 15 und 16 sind einerseits in eine Gewindebohrung eines Kolbens 17 eines Hydraulik-Zylinders 18 eingeschraubt, der jeweils an den beiden sich gegenüberliegenden Stirnwänden 4 befestigt ist. Dabei ist jeder Spannschraube 15 bzw. 16 auf beiden Seiten des Formrahmens 2 ein Hydraulik-Zylinder 18 zugeordnet. Das andere Ende der Spannschrauben 15 und 16 ist mit je einer Spannmutter 19 versehen, durch die die Zwischenwände 5, 5', 5" bzw. 6, 6', 6" miteinander verspannt werden. Die Lagerung der Führungsholme 9 und 11 in den inneren und äußeren Lagern 13, 14 erfolgt durch Lagerhülsen 20, die zusammen mit den Distanzhülsen 12 verspannt werden und deren Außendurchmesser etwas größer ist als der Außendurchmesser der Distanzhülsen 12.To demold the finished molded parts produced in the mold nests 7, which generally also have undercuts, the intermediate walls 5, 6; 5 ', 6'; 5 ", 6" before pulling up the mold frame 2 in the longitudinal direction of the mold 1 in opposite directions. For this purpose, the intermediate walls 5, 5 ', 5 "and 6, 6', 6" in the side parts 3 are mounted so as to be longitudinally displaceable. So that the partitions 5, 6; 5 ', 6'; 5 ", 6" can be moved apart at the same time, the extendable in the direction of arrow 8 are intermediate walls 5, 5 ', 5 "by guide rails 9 and in the opposite direction (arrow 10) extendable partitions 6, 6', 6" by guide rails 11 firmly connected. The arranged on both sides of the substantially rectangular mold frame 2 guide rails 9 and 11 are formed by spacer sleeves 12 which are inserted between the intermediate walls 5, 5 ', 5 "and 6, 6', 6" and in inner bearings 13 and outer Bearings 14 of the side parts 3 are mounted for longitudinal displacement. The spacer sleeves 12 are penetrated by clamping screws 15 and 16, which are passed through the intermediate walls 5, 5 ', 5 "and 6, 6', 6" and extend over the entire long side of the mold 1. The threaded ends of the clamping screws 15 and 16 are screwed on the one hand into a threaded bore of a piston 17 of a hydraulic cylinder 18, which is fastened to the two opposite end walls 4. Each clamping screw 15 or 16 is assigned a hydraulic cylinder 18 on both sides of the mold frame 2. The other end of the clamping screws 15 and 16 is provided with a clamping nut 19, through which the intermediate walls 5, 5 ', 5 "and 6, 6', 6" are clamped together. The guide rails 9 and 11 are supported in the inner and outer bearings 13, 14 by means of bearing sleeves 20 which are clamped together with the spacer sleeves 12 and whose outer diameter is somewhat larger than the outer diameter of the spacer sleeves 12.

Die Lager 13 und 14 für die Lagerhülsen 20 der Führungsholme 9 und 11 sind durch vier Ausnehmungen 21 unterbrochen, die jeweils im Bereich der ausfahrbaren Zwischenwände 5; 6, 5'; 6', 5" und 6" in den Seitenteilen 3 angebracht sind. Die Ausnehmungen 21 ermöglichen die Beweglichkeit der Zwischenwände 5, 5', 5" und 6, 6', 6" innerhalb des Formrahmens 3 und dienen gleichzeitig der Montage und Demontage der Spannhülsen 12, der Spannschrauben 15, 16 und der Spannmuttern 19. Die gegenläufige Verschiebbarkeit der nebeneinander gelagerten Führungsholme 9 und 11 erfordert es, daß der innere Führungsholm 9 mit seiner Distanzhülse 12 je eine Durchgangsbohrung 22 der außen gelagerten Zwischenwände 6, 6' frei beweglich durchsetzt.The bearings 13 and 14 for the bearing sleeves 20 of the guide bars 9 and 11 are interrupted by four recesses 21, each in the area of the extendable partition walls 5; 6, 5 '; 6 ', 5 "and 6" in the side parts 3 are attached. The recesses 21 allow the mobility of the partitions 5, 5 ', 5 "and 6, 6', 6" within the mold frame 3 and at the same time serve for the assembly and disassembly of the clamping sleeves 12, the clamping screws 15, 16 and the clamping nuts 19. The opposite Displaceability of the guide rails 9 and 11 mounted next to one another requires that the inner guide rail 9 with its spacer sleeve 12 each pass through a through hole 22 of the externally mounted intermediate walls 6, 6 'in a freely movable manner.

Zum Entformen der fertigen Formteile, die sich in den Formnestern 7 befinden, werden die Hydraulik-Zylinder 18 gleichzeitig mit einem Druckmittel beaufschlagt. Die Kolben 17 der auf der einen Stirnwand 4 der Form 1 angeordneten Hydraulik- Zylinder 18 ziehen die Zwischenwände 5, 5' und 5" in Richtung des Pfeiles 8, während die Kolben 17 auf der anderen Stirnwand 4 die Zwischenwände 6, 6' und 6" in der entgegengesetzten Richtung (Pfeil 10) auseinanderziehen. Danach können die Formteile aus den Formnestern 7 entnommen und durch Zufahren der Zwischenwände 5, 5', 5" und 6, 6', 6" das Formnest 7 wieder geschlossen werden. Die Größe der erforderlichen Längsverschiebbarkeit der Zwischenwände 5, 5', 5" und 6, 6', 6" richtet sich nach der Größe der Hinterschneidungen am Formteil und ist in der Regel relativ klein.To demold the finished molded parts, which are located in the mold nests 7, the hydraulic cylinders 18 are simultaneously acted upon by a pressure medium. The pistons 17 of the hydraulic cylinders 18 arranged on the one end wall 4 of the mold 1 pull the intermediate walls 5, 5 'and 5 "in the direction of the arrow 8, while the pistons 17 on the other end wall 4 pull the intermediate walls 6, 6' and 6 "pull apart in the opposite direction (arrow 10). The molded parts can then be removed from the mold nests 7 and the mold cavity 7 can be closed again by closing the partitions 5, 5 ', 5 "and 6, 6', 6". The size of the required longitudinal displaceability of the intermediate walls 5, 5 ', 5 "and 6, 6', 6" depends on the size of the undercuts on the molded part and is generally relatively small.

Die Fig. 5 der Zeichnung zeigt ein Ausführungsbeispiel der Erfindung, bei dem die Lager 13 und 14 für die Führungsholme 9 und 11 in Lagerblöcken 23 angeordnet sind, die mit dem Formrahmen 2 lösbar, beispielsweise durch Schrauben, verbunden sind. Dabei werden die Lager 13 und 14 durch austauschbare Lagerbüchsen 24 gebildet.Fig. 5 of the drawing shows an embodiment of the invention, in which the bearings 13 and 14 for the guide bars 9 and 11 are arranged in bearing blocks 23 which are detachably connected to the mold frame 2, for example by screws. The bearings 13 and 14 are formed by interchangeable bearing bushes 24.

Claims (11)

1. Form, insbesondere zur Herstellung von Betonsteinen, mit einem oder mehreren Formnestern, die in seitlicher Richtung durch zwei Seitenwände und in Längsrichtung durch jeweils zwei etwa vertikale und parallel zueinander angeordnete Zwischenwände begrenzt sind, dadurch gekennzeichnet, daß zum Entformen des fertigen Formteils die Zwischenwände (5, 6) in Längsrichtung der Form (11) horizontal ausfahrbar sind.1. Form, in particular for the production of concrete blocks, with one or more mold nests, which are limited in the lateral direction by two side walls and in the longitudinal direction by two approximately vertical and mutually arranged partitions, characterized in that the partitions for demolding the finished molding (5, 6) can be extended horizontally in the longitudinal direction of the mold (11). 2. Form nach Anspruch 1, dadurch gekennzeichnet, daß bei mehr als einem Formnest (7) jeweils die in der gleichen Richtung (8) bzw. (10) ausfahrbaren Zwischenwände (5, 5', 5") bzw. (6, 6', 6") durch mindestens zwei in Seitenteilen (3) der Form (1) längsverschiebbar gelagerte Führungsholme (9) bzw. (11) fest miteinander verbunden sind.2. Mold according to claim 1, characterized in that with more than one mold cavity (7) each in the same direction (8) or (10) extendable partitions (5, 5 ', 5 ") or (6, 6th ', 6 ") are firmly connected to one another by at least two guide rails (9) or (11) which are mounted so as to be longitudinally displaceable in side parts (3) of the mold (1). 3. Form nach Anspruch 2, dadurch gekennzeichnet, daß die Verbindung zwischen den in gleicher Richtung ausfahrbaren Zwischenwänden (5, 5', 5") bzw. (6, 6', 6") lösbar ist.3. Form according to claim 2, characterized in that the connection between the extendable in the same direction intermediate walls (5, 5 ', 5 ") or (6, 6', 6") is releasable. 4. Form nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Führungsholme (9) bzw. (11) durch Distanzhülsen (12) oder Lagerhülsen (20) gebildet werden, die zwischen den in gleicher Richtung ausfahrbaren Zwischenwänden (5, 5', 5") bzw. (6, 6', 6") angeordnet sind und von einer die Zwischenwände miteinander verspannenden Spannschraube (15) bzw. (16) durchsetzt werden.4. Form according to claim 2 or 3, characterized in that the guide rails (9) or (11) by spacer sleeves (12) or bearing sleeves (20) are formed between the extendable in the same direction intermediate walls (5, 5 ', 5 ") or (6, 6 ', 6") are arranged and are penetrated by a clamping screw (15) or (16) which clamps the partition walls together. 5. Form nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Führungsholme (9) bzw. (11) mit den Lagerhülsen (20) in zwei an jeder Längsseite der Form (1) in den Seitenteilen (3) mit geringem Abstand nebeneinander angeordneten Lagern (13) bzw. (14) längsverschiebbar gelagert sind.5. Mold according to one of claims 2 to 4, characterized in that the guide rails (9) or (11) with the bearing sleeves (20) in two on each long side of the mold (1) in the side parts (3) with a small distance bearings (13) or (14) arranged next to one another are mounted so as to be longitudinally displaceable. 6. Form nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß jeweils ein Ende der Spannschrauben (15) bzw. (16) mit einem Kolben (17) eines jeweils an den Stirnwänden (4) der Form (1) befestigten Hydraulikzylinders (18) lösbar verbunden ist und das andere Ende der Spannschrauben (15) bzw. (16) eine Spannmutter (19) trägt.6. Mold according to claim 4 or 5, characterized in that in each case one end of the clamping screws (15) or (16) with a piston (17) of a respective on the end walls (4) of the mold (1) attached hydraulic cylinder (18) is detachably connected and the other end of the clamping screws (15) or (16) carries a clamping nut (19). 7. Form nach Anspruch 6, dadurch gekennzeichnet, daß die Spannmuttern (19) den gleichen Außendurchmesser wie die Distanzhülsen (12) aufweisen und in den Lagern (13) bzw. (14) der Seitenteile (3) an entgegengesetzten Enden verschiebbar gelagert sind.7. Form according to claim 6, characterized in that the clamping nuts (19) have the same outer diameter as the spacer sleeves (12) and are mounted in the bearings (13) or (14) of the side parts (3) at opposite ends. 8. Form nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß an den Innenseiten der Seitenteile (3) jeweils im Bereich der ausfahrbaren Zwischenwände (5; 6, 5'; 6', 5", 6") Ausnehmungen (21) angebracht sind.8. Form according to one of claims 1 to 7, characterized in that on the inner sides of the side parts (3) in the region of the extendable intermediate walls (5; 6, 5 '; 6', 5 ", 6") recesses (21) are attached. 9. Form nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die außen gelagerten Zwischenwände (6, 6') im Bereich der Lager (14) für die innenliegenden Führungsholme (9) je eine Durchgangsbohrung (22) aufweisen, die von den innenliegenden Führungsholmen (9) frei beweglich durchsetzt werden.9. Mold according to one of claims 1 to 8, characterized in that the externally mounted intermediate walls (6, 6 ') in the region of the bearings (14) for the inner guide rails (9) each have a through hole (22) by the inner guide rails (9) can be moved freely. 10. Form nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Lager (13, 14) für die Führungsholme (9, 11) in Lagerblöcken (23) angeordnet sind, die mit dem Formrahmen (2) lösbar verbunden sind.10. Mold according to one of claims 1 to 9, characterized in that the bearings (13, 14) for the guide rails (9, 11) are arranged in bearing blocks (23) which are detachably connected to the mold frame (2). 11. Form nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Lager (13, 14) durch austauschbare Lagerbüchsen (24) gebildet werden, die in Bohrungen der Lagerblöcke (23) oder des Formrahmens (2) angeordnet sind.11. Mold according to one of claims 1 to 10, characterized in that the bearings (13, 14) are formed by interchangeable bearing bushes (24) which are arranged in bores in the bearing blocks (23) or the mold frame (2).
EP94114990A 1994-02-14 1994-09-23 Mould for concrete blocks Withdrawn EP0667220A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9421556U DE9421556U1 (en) 1994-02-14 1994-09-23 Form for concrete blocks

Applications Claiming Priority (2)

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DE19944404621 DE4404621A1 (en) 1994-02-14 1994-02-14 Form for concrete blocks
DE4404621 1994-02-14

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EP0667220A1 true EP0667220A1 (en) 1995-08-16

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Cited By (3)

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DE202016001312U1 (en) 2016-03-01 2016-03-11 Rampf Formen Gmbh Form frame with movable mold wall as well as a form wall system
DE102016002435A1 (en) 2016-03-01 2017-09-07 Rampf Formen Gmbh Form frame with movable mold wall, use of the mold frame and a form wall system with movable mold wall
CN113954206A (en) * 2021-10-29 2022-01-21 王肖义 Concrete block preparation system and preparation process

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Publication number Priority date Publication date Assignee Title
DE10110651A1 (en) * 2001-03-06 2002-09-12 Kobra Formen Gmbh Mold for the production of moldings

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US2460167A (en) * 1947-04-02 1949-01-25 Alf G Carlsen Concrete block making machine
US2696033A (en) * 1953-08-24 1954-12-07 William R Van Hook Building block mold box
DE1121526B (en) * 1958-11-21 1962-01-04 Otto Emele Molding device for the production of moldings from artificial stone
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CH673428A5 (en) * 1987-06-05 1990-03-15 Willi Ruckstuhl
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GB191317596A (en) * 1913-07-31 1913-11-13 Carl Rudolph Improvements in or relating to Apparatus for use in Manufacturing Artificial Pumice-stone-blocks and other Moulded Articles.
US2460167A (en) * 1947-04-02 1949-01-25 Alf G Carlsen Concrete block making machine
US2696033A (en) * 1953-08-24 1954-12-07 William R Van Hook Building block mold box
DE1121526B (en) * 1958-11-21 1962-01-04 Otto Emele Molding device for the production of moldings from artificial stone
DE1199673B (en) * 1963-04-26 1965-08-26 Atlas Werke Ag Lining for press molds for the production of artificial stones

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016001312U1 (en) 2016-03-01 2016-03-11 Rampf Formen Gmbh Form frame with movable mold wall as well as a form wall system
DE102016002435A1 (en) 2016-03-01 2017-09-07 Rampf Formen Gmbh Form frame with movable mold wall, use of the mold frame and a form wall system with movable mold wall
WO2017148585A1 (en) 2016-03-01 2017-09-08 Rampf Formen Gmbh Mold frame having a displaceable mold wall, use of the mold frame, and mold wall system having a displaceable mold wall
CN113954206A (en) * 2021-10-29 2022-01-21 王肖义 Concrete block preparation system and preparation process

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