CH92355A - Core model for the manufacture of cement pipes. - Google Patents

Core model for the manufacture of cement pipes.

Info

Publication number
CH92355A
CH92355A CH92355DA CH92355A CH 92355 A CH92355 A CH 92355A CH 92355D A CH92355D A CH 92355DA CH 92355 A CH92355 A CH 92355A
Authority
CH
Switzerland
Prior art keywords
sep
core model
manufacture
cement
model
Prior art date
Application number
Other languages
German (de)
Inventor
Siegwart Hans
Original Assignee
Siegwart Hans
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 Siegwart Hans filed Critical Siegwart Hans
Publication of CH92355A publication Critical patent/CH92355A/en

Links

Classifications

    • 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
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/342—Moulds, cores, or mandrels of special material, e.g. destructible materials which are at least partially destroyed, e.g. broken, molten, before demoulding; Moulding surfaces or spaces shaped by, or in, the ground, or sand or soil, whether bound or not; Cores consisting at least mainly of sand or soil, whether bound or not
    • 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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/86—Cores

Description

  

  Kernmodell für die Herstellung von     Zementrühren.       Modelle zur Gestaltung der innern     Foren          an    Zementröhren haben bekanntlich     1@Iecha-          nisinen,    welche dazu dienen, diese nach er  folgter     Abbindung    des Zementes zu     verklei-          nern,    um sie aus     dem    erzeugten Zementrohre       herausziehen    zu     können.     



  Diese Mechanismen sind aber, besonders  bei 5 und mehr Meter langen Eisenbeton  röhren von kleinem Durchmesser sehr     schWie-          rig    in die     Modelle    einzubauen. Bei     dauern-          (lein        Gebrauch    entstehen der     Längsfuge        ent-          lang    Überzähne und     Auseinanderklaffungen.          Ebenso    hat die Erfahrung gezeigt.     dass    mit  der Zeit     Deformationen    der     ursprünglichen     Kreisform eintreten.  



  Zweck der vorliegenden Erfindung ist es  nun. alle diese     llüngel    zu     beseitigen    und zu  ein Kernmodell zu schaffen. welches       ilen        weitgehensten        Anforderungen        bezüglich     Präzision der kreisrunden Form und der     Ge-          radlinigkeit    entspricht.

   Zudem soll     a.ucli    er  reicht werden.     class    dieses neue Modell     cleri     starken Beanspruchungen durch die Rohr  maschine und durch den Abtransport von der  letzteren, unter Belastung der frisch erzeug-         ten        Zementröhre,    erhöhten     Widerstand    leiten       kann.     



       Erfincluiig#geniäss    besteht das Kernmodell  aus einem     fugenlosen,    präzis gezogenen oder       abgedrehten    Eisenrohr,     welches    mit einem  leicht     schmelzbaren    Stoff     überzogen    ist.  



  Der     Cberzug    kann     ztvcchmähig    dadurch  gebildet     werden.    dass ein fugenloses,     abge-          drehteoder        präzis        frezogenes        Eisenrohr    in  ein      & id    aus     leicht        schmelzbarem    Stoff. z     B.          I';iraffin    oder      "achs,    eingetaucht     wird.     Dieser     liiiiterl;isst        ;

  wf    der Aussenseite des Roll  res einen Beleg von     wenigen        Zehntelsmilli-          nieter    Dicke.     \ach        diesem    Vorgang und er  folgter Erhärtung des Belages durch     Abküh-          limg,        kann    das     Modell    sofort zur     Zeme        nt-          i-oliic-rzen"uiig        -ebraueli1    werden.  



       Sobald        alsdann        cler        Abbindungsprozess    des  Zementes     genügend        vorgeschritten    ist, kann  durch     Wärmeeinwirkung        ini    Innern des       Eisenrohre:,    also des     -.NIoclelles,    der schmelz  bare Belag     fliissi-    gemacht werden, worauf  das     Modell    mühelos aus dem Zementrohre         herausgezogen        werden        kann  



  Core model for making cement stirring. As is well known, models for the design of the inner forums on cement pipes have 1 @ Iechanisinen, which serve to reduce them after the cement has set so that they can be pulled out of the cement pipes produced.



  However, these mechanisms are very difficult to install in the models, especially in the case of reinforced concrete pipes with a length of 5 meters or more and a small diameter. With constant use, over-teeth and gaps occur along the longitudinal joint. Experience has also shown that deformations of the original circular shape occur over time.



  It is now the purpose of the present invention. to eliminate all these bugs and to create a core model. which corresponds to the most extensive requirements in terms of precision of the circular shape and straightness.

   In addition, a.ucli should be achieved. class this new model can withstand the heavy loads caused by the pipe machine and by being transported away from the latter, under the load on the freshly created cement pipe, increased resistance.



       Inventively, the core model consists of a seamless, precisely drawn or twisted iron pipe, which is covered with an easily meltable material.



  The coating can thereby be partially formed. that a seamless, twisted or precisely drawn iron pipe in a & id made of easily meltable material. For example, I '; iraffin or "achs, is immersed. This liiiiterl; eats;

  wf the outside of the roll res a slip a few tenths of a millimeter thick. After this process and the hardening of the covering by cooling, the model can immediately become a Zeme nt-i-oliic-rzen "uiig -ebraueli1.



       As soon as the cement setting process has progressed sufficiently, the fusible coating can be made fluid by the action of heat in the interior of the iron pipe, that is to say the -NIoclelles, whereupon the model can be easily pulled out of the cement pipe

Claims (1)

EMI0002.0001 ÜATENTANSPRUCH <tb> 1@eriitrioelc.ll <SEP> für <SEP> die <SEP> Herstellung; <SEP> von <SEP> Ze inc.ntrühren. <SEP> d;tclurcli <SEP> gekennzeichnet, <SEP> dass <SEP> das selbe <SEP> aus <SEP> einem <SEP> fugenlosen, <SEP> präzis <SEP> gezogenen <tb> oder <SEP> abgedrehten <SEP> Eisenrohr <SEP> besteht, <SEP> welches <tb> mit <SEP> einem <SEP> leicht <SEP> schmelzbaren <SEP> Stoff <SEP> über- EMI0002.0002 zoten <SEP> ist, <SEP> zum <SEP> Zwecke, <SEP> durch <SEP> Ausschmelzen <tb> dieses <SEP> Stoffes <SEP> die <SEP> zum <SEP> 32odellziellen <SEP> notwen dige <SEP> Loekerunb <SEP> zwischen <SEP> Modell <SEP> und <SEP> Zement rohr <SEP> zii <SEP> erhalten. EMI0002.0001 OVERVIEW CLAIM <tb> 1@eriitrioelc.ll <SEP> for <SEP> the <SEP> production; Touch <SEP> from <SEP> Ze inc. <SEP> d; tclurcli <SEP> marked, <SEP> that <SEP> is the same <SEP> from <SEP> a <SEP> seamless, <SEP> precisely <SEP> drawn <tb> or <SEP> twisted <SEP> iron pipe <SEP> exists, <SEP> which one <tb> with <SEP> an <SEP> easily <SEP> fusible <SEP> substance <SEP> EMI0002.0002 zoten <SEP> is, <SEP> for <SEP> purposes, <SEP> by <SEP> melting out <tb> of this <SEP> substance <SEP> the <SEP> for the <SEP> 32 model-specific <SEP> necessary <SEP> Loekerunb <SEP> between <SEP> model <SEP> and <SEP> cement pipe <SEP> zii <SEP> received.
CH92355D 1921-04-05 1921-04-05 Core model for the manufacture of cement pipes. CH92355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH92355T 1921-04-05

Publications (1)

Publication Number Publication Date
CH92355A true CH92355A (en) 1922-05-16

Family

ID=4349808

Family Applications (1)

Application Number Title Priority Date Filing Date
CH92355D CH92355A (en) 1921-04-05 1921-04-05 Core model for the manufacture of cement pipes.

Country Status (1)

Country Link
CH (1) CH92355A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009050487A1 (en) * 2009-10-23 2011-04-28 Betonwerk Bieren Gmbh Negative mold for the production of a channel-containing manhole base and method for producing such a manhole base
DE102010030241A1 (en) * 2010-06-17 2011-12-22 Bfs Betonfertigteilesysteme Gmbh Process for producing a negative mold for the production of concrete elements
WO2016142540A1 (en) * 2015-03-12 2016-09-15 Conseil Service Investissements Method for moulding tubular elements in a material comprising cement, and pile thus produced

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009050487A1 (en) * 2009-10-23 2011-04-28 Betonwerk Bieren Gmbh Negative mold for the production of a channel-containing manhole base and method for producing such a manhole base
EP2314433A3 (en) * 2009-10-23 2014-02-19 Betonwerk Bieren GmbH Negative mould for producing the base of a shaft with a channel and method for producing the same
DE102010030241A1 (en) * 2010-06-17 2011-12-22 Bfs Betonfertigteilesysteme Gmbh Process for producing a negative mold for the production of concrete elements
WO2016142540A1 (en) * 2015-03-12 2016-09-15 Conseil Service Investissements Method for moulding tubular elements in a material comprising cement, and pile thus produced

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