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DE1091022B - Core for forming hollow concrete bodies - Google Patents

Core for forming hollow concrete bodies

Info

Publication number
DE1091022B
DE1091022B DE1959P0022245 DEP0022245A DE1091022B DE 1091022 B DE1091022 B DE 1091022B DE 1959P0022245 DE1959P0022245 DE 1959P0022245 DE P0022245 A DEP0022245 A DE P0022245A DE 1091022 B DE1091022 B DE 1091022B
Authority
DE
Germany
Prior art keywords
core
forming hollow
concrete bodies
hollow concrete
strips
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.)
Pending
Application number
DE1959P0022245
Other languages
German (de)
Inventor
Julius Pakozdi
Browny Sabo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1959P0022245 priority Critical patent/DE1091022B/en
Publication of DE1091022B publication Critical patent/DE1091022B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • B28B7/28Cores; Mandrels
    • B28B7/30Cores; Mandrels adjustable, collapsible, or expanding
    • B28B7/306Cores; Mandrels adjustable, collapsible, or expanding pliable or extensible
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • B28B7/28Cores; Mandrels

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Description

Kern zum Formen von hohlen Betonkörpern Die Erfindung befaßt sich mit der Ausgestaltung eines Kernes zum Formen von hohlen Betonkörpern. Beim Herstellen derartiger Betonkörper tritt die Aufgabe auf, den Kern unter Aufwand von möglichst wenig Energie aus dem Betonkörper entfernen zu können. Andererseits soll der Betonkörper im Innern an seiner Oberfläche möglichst nicht beschädigt werden.Core for forming hollow concrete bodies The invention is concerned with the design of a core for forming hollow concrete bodies. When manufacturing Such concrete body occurs the task of the core with the effort of as much as possible to be able to remove little energy from the concrete body. On the other hand, the concrete body should inside on its surface are not damaged as far as possible.

Es sind bereits verschiedene Verfahren bekannt, um das oben angegebene Ziel zu erreichen. Man ist z. B. so vorgegangen, daß man die Kerne mit Leinenschläuchen umgeben hat, die mit dem Kern entfernt wurden. Anschließend werden diese Leinenschläuche gereinigt und damit für einen neuen Formprozeß brauchbar gemacht.Various methods are already known in order to achieve the above Goal to achieve. One is z. B. proceeded so that the cores with linen tubes that were removed with the core. Then these linen tubes cleaned and thus made usable for a new molding process.

Es ist einzusehen, daß diese Technik verhältnismäßig kompliziert ist und auch nicht zu glatten Oberflächen im Innern des Betonkörpers führt.It will be appreciated that this technique is relatively complex and also does not lead to smooth surfaces inside the concrete body.

Ferner hat man Kerne aus verhältnismäßig dickem Gummi hergestellt und diese, wenn nötig, noch durch Gasrohre versteift. Auch in diesem Fall sind diese Kerne schwer aus den Betonkörpern herauszuziehen, da die Kräfte zur Überwindung der Reibung doch recht erheblich sind.Cores have also been made from relatively thick rubber and if necessary, stiffened with gas pipes. In this case too, these are Cores difficult to pull out of the concrete bodies, because the forces have to be overcome the friction are quite considerable.

Bekannt sind auch Kerne, die mit Schnüren als Zwischenlage umwickelt sind, die vor dem Kern abgezogen werden. Das Aufwickeln der Schnüre ist aber umständlich. Außerdem ergeben die Schnüre eine unregelmäßige Innenwand des Formlings.Also known are cores that are wrapped with cords as an intermediate layer that are withdrawn from the core. Winding up the cords is cumbersome. In addition, the cords result in an irregular inner wall of the molding.

Erfindungsgemäß wird die hier anstehende Aufgabe dadurch gelöst, daß das elastische Material aus im Verhältnis zur Kernstücke dünnen, in Längsrichtung des Kernes verlaufenden und den ebenen Begrenzungsflächen des Kernes entsprechenden Streifen besteht.According to the invention, the problem at hand is achieved in that the elastic material made of thin in relation to the core pieces, in the longitudinal direction of the core and corresponding to the planar boundary surfaces of the core Strip consists.

Die Ausführungsform nach der Erfindung hat den Vorteil, daß durch Aufteilen der Zwischenlage zwischen Kern und Betonkörper in in Längsrichtung verlaufende Streifen die Reibung zwischen diesen Streifen und dem Betonkörper so gering ist, daß diese Streifen ohne weiteres von Hand entfernt werden können. Danach wird dann der Kern herausgenommen, und dieser gleitet in dem Betonkörper so leicht, daß eine Beschädigung dieses Körpers ausgeschlossen ist.The embodiment according to the invention has the advantage that by Dividing the intermediate layer between the core and the concrete body in longitudinal directions Strip the friction between these strips and the concrete body is so low that these strips can easily be removed by hand. After that, then the core taken out, and this slides in the concrete body so easily that a Damage to this body is excluded.

Dadurch, daß diese elastischen Streifen sehr dünn ausgeführt sind, ist der Vorteil gegeben, daß sie sich leicht an dem Kern befestigen lassen. In der Praxis heftet man die Streifen leicht an den Kern an, z. B. mittels Heftzwecken. Eine andere Methode besteht darin, daß man die Streifen mit plastischem Material einpinselt, durch welches sie festgehalten werden, und dieses Material trocknet beim Kühlvorgang, so daß es das Herausziehen der Streifen nicht stört. Ferner ist es vorteilhaft, daß die Streifen durch dünne Gummiringe festgelegt werden, die das Herausziehen nachher in keiner Weise stören.Because these elastic strips are made very thin, there is the advantage that they can be easily attached to the core. In the In practice, the strips are easily attached to the core, e.g. B. by means of thumbtacks. Another method is that you can cover the strips with plastic material brushed on by which they are held, and this material dries during the cooling process, so that it does not interfere with pulling out the strips. Furthermore is It is advantageous that the strips are fixed by thin rubber rings that hold the Do not disturb in any way pulling it out afterwards.

In der Zeichnung ist eine Ausführungsform der Erfindung dargestellt.In the drawing, an embodiment of the invention is shown.

In einem an sich bekannten, nicht mit Bezugszeichen versehenen Rahmen ist der Kern 1 gelagert, der in seinem Innern bei 2 hohl ist. Dieser Kern besteht also z. B. aus zusammengefügten Brettern. An den Flächen des Kernes sind die verhältnismäßig dünnen, in Längsrichtung des Kernes verlaufenden und den ebenen Begrenzungsflächen des Kernes entsprechenden Streifen 3, 4 aus elastischem Material angebracht.In a frame which is known per se and is not provided with reference symbols the core 1 is mounted, which is hollow in its interior at 2. This core exists so z. B. from assembled boards. They are proportionate on the surfaces of the core thin, in the longitudinal direction of the core and the flat boundary surfaces of the core corresponding strips 3, 4 of elastic material attached.

Claims (1)

PATENTANSPRUCH: Kern zum Formen von hohlen Betonkörpern, der mit Gummi oder dergleichem elastischem Material umgeben ist, welches vor dem Kern herausgezogen wird, dadurch gekennzeichnet, daß das elastische Material aus im Verhältnis zur Kernstärke dünnen, in Längsrichtung des Kernes (1) verlaufenden und den ebenen Begrenzungsflächen des Kernes (1) entsprechenden Streifen (3, 4) besteht. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 159 972, 185 649, 52 725, 803 646, 68 024.PATENT CLAIM: Core for forming hollow concrete bodies, the one with rubber or the same elastic material which is drawn out in front of the core is, characterized in that the elastic material is made in relation to Thin core thickness, running in the longitudinal direction of the core (1) and the flat boundary surfaces of the core (1) corresponding strips (3, 4). Considered publications: German patent specifications No. 159 972, 185 649, 52 725, 803 646, 68 024.
DE1959P0022245 1959-02-19 1959-02-19 Core for forming hollow concrete bodies Pending DE1091022B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1959P0022245 DE1091022B (en) 1959-02-19 1959-02-19 Core for forming hollow concrete bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1959P0022245 DE1091022B (en) 1959-02-19 1959-02-19 Core for forming hollow concrete bodies

Publications (1)

Publication Number Publication Date
DE1091022B true DE1091022B (en) 1960-10-13

Family

ID=599870

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1959P0022245 Pending DE1091022B (en) 1959-02-19 1959-02-19 Core for forming hollow concrete bodies

Country Status (1)

Country Link
DE (1) DE1091022B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68024C (en) * W. A. H. köster, Konsul, in Heidelberg Process for the production of cavities in plasterboards and similar castings
DE52725C (en) * Dr. phil. A. KATZ, Regierungsbaumeister in Stuttgart Process for the production of hollow panels or stones
DE185649C (en) *
DE159972C (en) * 1903-09-10
DE803646C (en) * 1949-02-07 1951-04-05 Armand Blaton Process for the production of channels in concrete

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68024C (en) * W. A. H. köster, Konsul, in Heidelberg Process for the production of cavities in plasterboards and similar castings
DE52725C (en) * Dr. phil. A. KATZ, Regierungsbaumeister in Stuttgart Process for the production of hollow panels or stones
DE185649C (en) *
DE159972C (en) * 1903-09-10
DE803646C (en) * 1949-02-07 1951-04-05 Armand Blaton Process for the production of channels in concrete

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