DE847562C - Device and method for producing hollow ceramic bodies by the extrusion process - Google Patents

Device and method for producing hollow ceramic bodies by the extrusion process

Info

Publication number
DE847562C
DE847562C DES5221D DES0005221D DE847562C DE 847562 C DE847562 C DE 847562C DE S5221 D DES5221 D DE S5221D DE S0005221 D DES0005221 D DE S0005221D DE 847562 C DE847562 C DE 847562C
Authority
DE
Germany
Prior art keywords
hollow
mouthpiece
hollow shaft
extrusion process
bodies
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.)
Expired
Application number
DES5221D
Other languages
German (de)
Inventor
Franz Fuchs
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DES5221D priority Critical patent/DE847562C/en
Application granted granted Critical
Publication of DE847562C publication Critical patent/DE847562C/en
Expired legal-status Critical Current

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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/52—Methods or machines specially adapted for the production of tubular articles by extruding
    • B28B21/54—Mouthpieces for shaping sockets, bends, or like peculiarly-shaped tubular articles

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Description

Die Herstellung keramischer Hohlkörper nach dem Strängpraveriähren, insbesondere von Rohren od. dgl., ist mit großen Schwierigkeiten verbunden, die sich besonders durch die geringe Rohfestigkeit der keramischen Körper ergeben, so daß beim Trocknen eine Deformierung eintritt. Besonders bei schwachwäridigen Rohren tritt sehr leicht ein Oval.: werden ein.The production of ceramic hollow bodies after the extrusion process, in particular of pipes or the like., Is associated with great difficulties, the result especially from the low raw strength of the ceramic body, see above that a deformation occurs during drying. Especially with low-heat pipes an oval occurs very easily .: become.

Gemäß der vorliegenden Erfindung wird der an sich bekannte, im Mundstück der Strangpresse be= Wegbär angeordnete Kern zur Regelung der Wandstärke als Hohlwelle ausgebildet. Hierdurch wird es möglich, während des Strangpressens durch den als Hohlwelle ausgebildeten Kern Luft, vorzugsweise Warmluft, zum Trocknen bzw. schnellen Verfestigen der Hohlkörper hindurchströmen zu lassen. Ferner können durch die Hohlwelle starre oder elastische Hilfskörper, z. B. Metall-, Papier-oder Gummirohre, eingeführt und mit durch das Mundstück hindurchgepreßt werden, um eine A_ bstützung der Hohlkörper beim Trocknen- zu bewirken. Diese Hilfskerne können dann, nachdem die Rohre abgetrocknet sind und sieh veirfestigt haben, entfernt werden. Die Hohlwelle kann auch durch zeitweises Zurückziehen, in das Mundstück dazu dienen, an den zu. pressenden Rohren Endverstärkungen herzustellen, um ein Aufhängen. der Rohre zum Trocknen und zum Brennen zu ermöglichen.According to the present invention, the known per se, in the mouthpiece of the extruder be = Wegbär core arranged for regulating the wall thickness of a hollow shaft. This makes it possible, during extrusion, to let air, preferably warm air, flow through the core, which is designed as a hollow shaft, for drying or rapid solidification of the hollow bodies. Furthermore, through the hollow shaft rigid or elastic auxiliary body, z. B. metal, paper or rubber pipes are inserted and pressed through the mouthpiece in order to provide support for the hollow body during drying. These auxiliary cores can then be removed after the pipes have dried and solidified. The hollow shaft can also be used by temporarily pulling it back into the mouthpiece to pressing pipes to produce end reinforcements for hanging. Allow the tubes to dry and burn.

In der .Zeichnung ist die Erfindung an einem Ausführungsbeispiel schematisch veranschaulicht. In das Gehäuse i der Strangpresse wird durch die Schnecke a die Preßmasse eingedrückt, welche dann durch das Mundstück 3 austritt. Im Mundstück bzw. .in dem Gehäuse der Serangpresse ist ein als Hohlwelle ausgebildeter Kern 4 vorgesehen, der im Mundstück 3 vor- und zurückbewegt werden kann; j e nachdem, -ob 'der Kern im Mundstück 3 angeordnet ist oder aus diesem in das Gehäuse i zurückgezogen wird, wird ein dünnwandiger oder starkwandiger Hohlköipei hergestellt: Die Ausbildung des- Kerns als Hohlwelle ermöglicht es nun, Hilfskörper in Form eines Hohlzylinders 5,einzu-. führen, welche beim Preßvorgang mit durch das Mundstück hindurchtreten und als Stützkörper für die herzustellenden Hohlkörper wirken. ,Dadurch wird ein frühzeitiges Abreißen des Strangs vermieden und verhindert, daß' die Hohlkörper oval werden, da die Hilfskörper formhaltend auf diese wirken,. Die Hilfskerne 5, welche mit durch das Mundstück 3 hindurchgepreßt werden, können aus Metall, Papier. oder Gummi bestehen und werden, nachdem die Hohlkörper entsprechend abgetrocknet -sind, aus diesen wieder entfernt.In the .Drawing the invention is shown schematically in one embodiment illustrated. In the housing i of the extruder is through the screw a the Pressing molding compound, which then exits through the mouthpiece 3. In the mouthpiece or. in the housing of the serang press is a core 4 designed as a hollow shaft provided, which can be moved back and forth in the mouthpiece 3; it depends on 'The core is arranged in the mouthpiece 3 or withdrawn from this into the housing i a thin-walled or thick-walled hollow head is produced: The training The core as a hollow shaft now allows auxiliary bodies in the form of a hollow cylinder 5, a-. lead, which pass through the mouthpiece during the pressing process and act as a support body for the hollow body to be produced. , This becomes a premature tearing of the strand avoided and prevents' the hollow body become oval, since the auxiliary bodies have a shape-retaining effect on them. The auxiliary cores 5, which are pressed through the mouthpiece 3 can be made of metal, paper. or rubber are made and after the hollow body has dried accordingly -are removed from these again.

Die bewegliche Hohlwelle 4 ist besonders gut dafür.geeignet, durch Zurückziehen in das Mundstück 'an dem zu pressenden Hohlkörper Endverstärkwgen 7 herzustellen, um ein Aufhängen der Rohre zum Trocknen und Brennen zu ermöglichen. Ohne derartige Endverstärkungen war es nicht möglich, längere Rohre an ihren Enden aufzuhängen, ohne, daß diese abrissen. Der Antrieb der Hohlwelle erfolgt über ein Getriebe 6.The movable hollow shaft 4 is particularly suitable for it Withdrawal into the mouthpiece on the hollow body to be pressed end reinforcement 7 to allow the pipes to be hung up to dry and burn. Without such end reinforcements it was not possible to have longer pipes at their ends hang up without tearing them off. The hollow shaft is driven by a Transmission 6.

Claims (1)

PATENTANSPRLICIIE: i. Vorrichtung zur Herstellung keramischer Hohlkörper, insbesondere Rohre od. dgl., nach dem Strangpreßverfahren mit einem zur Regelung der Wandstärke ,im Mundstück bewegbaren Kern, dadurch gekennzeichnet, daß der Kern als Hohlwelle ausgebildet ist. z. Verfahren zur Herstellung von Hohlkörpern unter Benutzung einer Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß durch die im Mundstück angeordnete Hohlwelle Luft,. vorzugsweise Warmluft, zum Trocknen bzw. Verfestigen der Hohlkörper hindurchströmt. 3. Verfahren zum Herstellen von keramischen Hohlkörpern unter Benutzung einer Vorrichtung nach, Anspruch i, dadurch gekennzeichnet, daß durch die Hohlwelle starre oder elastische Hilfskörper, z. B. Metall-, Papier-oder Gummirohre, eingeführt werden, die eine Abstützung der Hohlkörper beim Trocknen bewirken. 4. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Hohlwelle durch zeitweises Zurückziehen in das Mundstück dazu dient, ,an den zu ,pressenden Hohlkörpern Endverstärkungen herzustellen, um ein Aufhängen der Röhre zum Trocknen und Brennen zu ermöglichen.PATENT APPLICATION: i. Device for the production of ceramic hollow bodies, in particular pipes or the like, after the extrusion process with a control the wall thickness, movable core in the mouthpiece, characterized in that the core is designed as a hollow shaft. z. Process for the production of hollow bodies under Use of a device according to claim i, characterized in that the Hollow shaft air arranged in the mouthpiece. preferably warm air, for drying or Solidifying the hollow body flows through it. 3. Method of making ceramic Hollow bodies using a device according to Claim i, characterized in that that through the hollow shaft rigid or elastic auxiliary body, for. B. metal, paper or Rubber pipes are inserted, which support the hollow body when it dries cause. 4. The method according to claim i, characterized in that the hollow shaft by temporarily pulling it back into the mouthpiece serves to, on the to, pressing Hollow bodies produce end reinforcements in order to hang up the tube to dry and allow burning.
DES5221D 1943-09-09 1943-09-09 Device and method for producing hollow ceramic bodies by the extrusion process Expired DE847562C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES5221D DE847562C (en) 1943-09-09 1943-09-09 Device and method for producing hollow ceramic bodies by the extrusion process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES5221D DE847562C (en) 1943-09-09 1943-09-09 Device and method for producing hollow ceramic bodies by the extrusion process

Publications (1)

Publication Number Publication Date
DE847562C true DE847562C (en) 1952-08-25

Family

ID=7471260

Family Applications (1)

Application Number Title Priority Date Filing Date
DES5221D Expired DE847562C (en) 1943-09-09 1943-09-09 Device and method for producing hollow ceramic bodies by the extrusion process

Country Status (1)

Country Link
DE (1) DE847562C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1056521B (en) * 1957-05-23 1959-04-30 Siemens Planiawerke Ag Device for the extrusion of pipes or profiles via a mandrel movably arranged in the nozzle of the extruder
FR2386400A1 (en) * 1977-04-06 1978-11-03 Haldenwanger Kg W METHOD AND DEVICE FOR THE PRODUCTION OF AN OXIDIZED CERAMIC TUBE CLOSED AT THE END BY A CAP

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1056521B (en) * 1957-05-23 1959-04-30 Siemens Planiawerke Ag Device for the extrusion of pipes or profiles via a mandrel movably arranged in the nozzle of the extruder
FR2386400A1 (en) * 1977-04-06 1978-11-03 Haldenwanger Kg W METHOD AND DEVICE FOR THE PRODUCTION OF AN OXIDIZED CERAMIC TUBE CLOSED AT THE END BY A CAP

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