EP0160883A2 - Filière pour extrudeuses - Google Patents

Filière pour extrudeuses Download PDF

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Publication number
EP0160883A2
EP0160883A2 EP85104917A EP85104917A EP0160883A2 EP 0160883 A2 EP0160883 A2 EP 0160883A2 EP 85104917 A EP85104917 A EP 85104917A EP 85104917 A EP85104917 A EP 85104917A EP 0160883 A2 EP0160883 A2 EP 0160883A2
Authority
EP
European Patent Office
Prior art keywords
webs
mouthpiece
front plate
cores
core
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Withdrawn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
EP85104917A
Other languages
German (de)
English (en)
Other versions
EP0160883A3 (fr
Inventor
Horst Rank
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.)
Ziegelmundstueckbau Braun GmbH
Original Assignee
Ziegelmundstueckbau Braun 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 Ziegelmundstueckbau Braun GmbH filed Critical Ziegelmundstueckbau Braun GmbH
Publication of EP0160883A2 publication Critical patent/EP0160883A2/fr
Publication of EP0160883A3 publication Critical patent/EP0160883A3/fr
Withdrawn legal-status Critical Current

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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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/26—Extrusion dies

Definitions

  • the invention relates to a mouthpiece for extrusion presses for the production of moldings provided with cavities, in particular of ceramic materials, for example perforated bricks, which consists of a front plate to be attached to the extrusion press, a mouthpiece frame and a plurality of cores arranged on core holders the front plate are supported.
  • Mouthpieces of this type are known in numerous different configurations and have also proven themselves in practice.
  • the core holders are each supported by means of two core brackets on the front plate, which protrude into the press head and have crossbars to which the core holders are attached.
  • the clay string is thus not only divided by the crosspieces, but above all by the core bracket, in an area in which no significant compression is carried out.
  • the strong core bracket which has a high flow resistance and therefore a Cause material jam
  • the flow of the clay strand is adversely affected, this is sometimes broken down so that a reconnection in the mouthpiece is not guaranteed and molded articles pressed with such mouthpieces tend to crack during firing.
  • the mouthpieces in particular have to be assembled by hand, these mouthpieces are complex to produce and therefore cannot be produced economically.
  • the object of the invention is therefore to provide a mouthpiece for extrusion presses of the aforementioned type which not only enables a smooth flow of a clay strand without congestion occurring, but which can also be largely machine-made. Above all, the aim is to avoid a subdivision of the clay strand before it enters the mouthpiece, so that cracks caused during firing are largely excluded and homogeneous moldings have to be pressed.
  • the front plate is provided with webs which pass through it, preferably with longitudinal webs and transverse webs running parallel to the edge parts thereof, to which the core holders carrying the cores are directly attached.
  • the core holders can in each case be welded to the end face of the webs facing away from the extrusion press or screwed into threaded bores machined into the webs.
  • the webs can be formed in a simple manner by preferably rectangular recesses machined into the front plate, but it is also possible to provide the front plate with an exchangeable insert which has the webs supporting the core holder.
  • the mouthpiece for extrusion presses designed according to the invention is not only extremely simple in terms of construction and thus economical to manufacture, but also distributes the clay to be pressed into shaped pieces evenly over the core holders and cores without causing a major material jam is, rather, an equalization of the material flow is guaranteed compared to the known mouthpieces. If the front plate is provided with these through webs, to which the core holders are directly attached, core clips are no longer required, the clay strand is thus distributed only through the webs of the mouthpiece, without material jam occurring. And since the arrangement of the webs can be easily selected according to the hole pattern of the molding, it is often not necessary to reconnect the clay material, and crack formation during firing is very reliably counteracted in this way. In addition, since only recesses need to be machined into the attachment plate and the core holders can be automatically welded to the webs to form the webs, the mouthpiece is largely machine-made and therefore inexpensive in a problem-free manner.
  • the mouthpiece shown in FIGS. 1 and 3 and designated 1 serves for the production of moldings provided with cavities, for example perforated bricks, and is attached to an extrusion press, by means of which a clay strand is pressed through the mouthpiece 1.
  • the mouthpiece 1 in this case consists of a Vorsetzplatte 2, a mouthpiece frame 3 and angeord- on core holders 4 designated cores n 5, each mounted on a threaded extension 6 of the core holders 4 and secured by means of nuts. 7
  • the cores 5, 5 ', 5''shown in FIG. 2, which are designed in different ways and which form the hole pattern of the clay strand to be pressed through the mouthpiece 1, can thus be easily replaced.
  • longitudinal webs 12 and transverse webs 13 are formed.
  • the longitudinal webs 12 arranged on both sides of a transverse web 13 are used to increase the Stability offset against each other.
  • the longitudinal and transverse webs 12 and 13, which result in the hole pattern 10 shown in FIG. 2 are provided with run-in slopes 14 on the end face facing the extruder and are thus wedge-shaped, the flow resistance is thereby reduced.
  • the core holders 4 are fastened to the ends of the webs 12, 13 on the end facing away from the extruder, namely, as can be seen from FIG. 3, the core holder designated by 4 is incorporated into the webs 12, 13 by means of a threaded attachment 8 Threaded hole 15 screwed in, the core holder designated 4 ', however, is welded to the web 13.
  • the webs 12, 13; through which no uneven material densifications are caused, so that the clay strand is not adversely affected, can also be worked into an insert 21, as can be seen in broken lines in FIG. 3, which can be used interchangeably in the front plate 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
EP85104917A 1984-05-05 1985-04-23 Filière pour extrudeuses Withdrawn EP0160883A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3416707 1984-05-05
DE19843416707 DE3416707A1 (de) 1984-05-05 1984-05-05 Mundstueck fuer strangpressen

Publications (2)

Publication Number Publication Date
EP0160883A2 true EP0160883A2 (fr) 1985-11-13
EP0160883A3 EP0160883A3 (fr) 1988-08-03

Family

ID=6235064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104917A Withdrawn EP0160883A3 (fr) 1984-05-05 1985-04-23 Filière pour extrudeuses

Country Status (2)

Country Link
EP (1) EP0160883A3 (fr)
DE (1) DE3416707A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2190358A1 (es) * 2001-09-11 2003-07-16 Torres Dang S L Sistema de union entre camisa y tacos para molde de fabricacion de ladrillos por extrusion.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101391436B (zh) * 2008-10-28 2011-01-26 襄樊三金模具有限公司 反压式盲孔砖模具

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE586220C (de) * 1933-10-19 Heinrich Ellermeier Strangpressenmundstueck zur Herstellung von Viellochziegeln
US1725959A (en) * 1929-08-27 Extruding bib
DE535920C (de) * 1929-04-12 1931-10-16 Hans Letz Strangpressenmundstueck zur Herstellung von Viellochziegeln

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2190358A1 (es) * 2001-09-11 2003-07-16 Torres Dang S L Sistema de union entre camisa y tacos para molde de fabricacion de ladrillos por extrusion.

Also Published As

Publication number Publication date
EP0160883A3 (fr) 1988-08-03
DE3416707A1 (de) 1985-11-07

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Inventor name: RANK, HORST