EP0315753B1 - Doctor blade for manufacturing concrete tiles - Google Patents

Doctor blade for manufacturing concrete tiles Download PDF

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Publication number
EP0315753B1
EP0315753B1 EP88115054A EP88115054A EP0315753B1 EP 0315753 B1 EP0315753 B1 EP 0315753B1 EP 88115054 A EP88115054 A EP 88115054A EP 88115054 A EP88115054 A EP 88115054A EP 0315753 B1 EP0315753 B1 EP 0315753B1
Authority
EP
European Patent Office
Prior art keywords
profile
base plate
mouthpiece
molded parts
shaped parts
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 - Lifetime
Application number
EP88115054A
Other languages
German (de)
French (fr)
Other versions
EP0315753A1 (en
Inventor
Werner Dipl.-Ing. Mandt
Stefan Dipl.-Ing. Kutter
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.)
Kutter Stefan Dipl-Ing
Mandt Werner Dipl-Ing
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 AT88115054T priority Critical patent/ATE51574T1/en
Publication of EP0315753A1 publication Critical patent/EP0315753A1/en
Application granted granted Critical
Publication of EP0315753B1 publication Critical patent/EP0315753B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B28B3/00Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/12Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
    • B28B3/123Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material on material in moulds or on moulding surfaces moving continuously underneath or between the rollers, e.g. on an endless belt
    • 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
    • B28B7/0064Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces

Definitions

  • the present invention relates to a profile mouthpiece according to the preamble of claim 1.
  • a profile mouthpiece is known from DE-U 8 307 535.
  • a one-piece upper part with a profile made of hard metal was created to counteract the wear at the concise points and to achieve a considerably longer service life.
  • the base plate was made of steel in the usual way.
  • the one-piece construction of the profiled upper part has brought with it considerable manufacturing difficulties, so that one was forced to provide several molded parts (cf. EP-A 35 010, preamble of claim 1).
  • the invention is therefore based on the object of improving the aforementioned profile mouthpiece in such a way that it avoids the disadvantages mentioned above.
  • the aim of the invention is therefore to provide a highly wear-resistant profile mouthpiece with a surface area made of hard metal, which enables the production of an extremely high number of perfect concrete roof tiles without any marking and, if necessary, allows partial replacement at special wear points.
  • the upper part comprises a plurality of molded parts on the front side seen in the material flow, additionally on the rear side a one-piece, continuous profile strip, which also has the shape of the flush-fitted molded parts on its upper side.
  • the molded parts and the profile strip are attached to the base plate using screws and nuts. A high wear resistance is guaranteed through the use of the hard metal consisting of sintered tungsten carbide.
  • the height of the profile strip can be adjusted via elongated holes. Since the wear is greater in practice, especially on the rear side seen in the flow of material, a compensation can be created by raising the profile strip without the profile strip having to be replaced in whole or in part. All in all, the profile mouthpiece constructed according to the invention satisfies both the need for the possibility of adapting certain parts to the wear, and the possibility of replacing parts which are subject to greater wear.
  • the profile mouthpiece according to the invention is generally designated 10 in the figures. During operation, it interacts in an extruder (not shown) with a suitably designed profile roller in order to process the concrete material coming from a hopper, not shown, into concrete roof tiles.
  • the upper part consists of several molded parts 2, 3, 4 and 5.
  • the number and size of the molded parts is not critical, but can be chosen as desired in a suitable frame.
  • the molded parts 2, 3, 4 and 5 are approximately the same size and are arranged on the front side seen in the material flow.
  • the molded parts 2, 3, 4 and 5 consist of hard metal, while the base plate 6, as usual, is formed from normal steel.
  • the profile strip 1 which consists of one part and is continuous on the back of the molded parts 2, 3, 4 and 5, i.e. the profile strip 1 covers all the molded parts to the rear and is adapted in terms of surface to the adjacent molded parts 2, 3, 4 and 5.
  • the one-piece construction of the profile strip 1 ensures that the separating joints 7 present between the molded parts 2, 3, 4 and 5 stop before the concrete roof tile is removed from the profile mouthpiece 10 according to the invention and therefore do not leave any undesired markings.
  • the molded parts 2, 3, 4 and 5 are fastened to the steel carrier or the base plate 6 by screws 9 and nuts 8.
  • the arrangement and number of screws and nuts can be selected in a suitable frame.
  • clamping plates can be used for fastening, which have T-slots running at an angle to the base plate.
  • a particularly advantageous aspect of the profile mouthpiece 10 according to the invention is the adjustability of the profile strip 1 with respect to its height. Since the profile strip 1 is more worn than the molded parts lying in front of it in the material flow, the profile strip 1 can be raised after a certain abrasion or sanding, for which purpose the screw running in the elongated hole is temporarily loosened.

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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)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

1. Profile mouthpiece for producing concrete roof stones with a profile-prossessing upper part made from hard metal and a base plate (6) to which is fixed the upper part, in which the latter has several shaped parts (2, 3, 4, 5) on the front side considered in the material flow, characterized in that the upper part on the back comprises a one-part through profile strip (1), fixed by means of screws (9) and nuts (8) to the base plate (6).

Description

Die vorliegende Erfindung betrifft ein Profilmundstück nach dem Oberbegriff des Anspruches 1.The present invention relates to a profile mouthpiece according to the preamble of claim 1.

Ein Profilmundstück ist aus DE-U 8 307 535 bekannt. Nach der vorbekannten Lehre wurde ein einstückiges Oberteil mit Profil aus Hartmetall geschaffen, um an den prägnanten Stellen dem Verschleiß entgegenzuwirken und eine erheblich längere Standzeit zu erzielen. Die Grundplatte wurde in üblicher Weise aus Stahl gefertigt. Der einstückige Aufbau des profilierten Oberteils hat jedoch erhebliche fertigungstechnische Schwierigkeiten mit sich gebracht, so daß man gezwungen war, mehrere Formteile vorzusehen (vgl. EP-A 35 010, Oberbegriff des Anspruchs 1).A profile mouthpiece is known from DE-U 8 307 535. According to the previously known teaching, a one-piece upper part with a profile made of hard metal was created to counteract the wear at the concise points and to achieve a considerably longer service life. The base plate was made of steel in the usual way. However, the one-piece construction of the profiled upper part has brought with it considerable manufacturing difficulties, so that one was forced to provide several molded parts (cf. EP-A 35 010, preamble of claim 1).

Nachteilig hat sich jedoch beim Arbeiten mit mehreren Formteilen bemerkbar gemacht. daß dann Trennfugen zwischen den Formteilen entstehen, die auf den herzustellenden Betondachpfannen unerwünschte Markierungen hinterlassen.A disadvantage, however, has become noticeable when working with several molded parts. that then separating joints arise between the molded parts, which leave undesired markings on the concrete roof tiles to be produced.

Der Erfindung liegt deshalb die Aufgabe zugrunde, das eingangs genannte Profilmundstück derart zu verbessern, daß es die oben erwähnten Nachteile vermeidet. Ziel der Erfindung ist es also, ein hochverschleißfestes Profilmundstück mit einem Oberflächenbereich aus Hartmetall zu schaffen, das die Herstellung einer extrem hohen Anzahl einwandfreier Betondachpfannen ohne jegliche Markierung ermöglicht und ggf. einen Teilersatz an besonderen Verschleißpunkten zuläßt.The invention is therefore based on the object of improving the aforementioned profile mouthpiece in such a way that it avoids the disadvantages mentioned above. The aim of the invention is therefore to provide a highly wear-resistant profile mouthpiece with a surface area made of hard metal, which enables the production of an extremely high number of perfect concrete roof tiles without any marking and, if necessary, allows partial replacement at special wear points.

Diese Aufgabe wird durch das im Anspruch 1 gekennzeichnete Profilmundstück gelöst.This object is achieved by the profile mouthpiece characterized in claim 1.

Erfindungsgemäß umfaßt das Oberteil das mehrere Formteile auf der im Materialfluß gesehenen Vorderseite enthält, zusätzlich auf der Rückseite eine einteilige, durchgehende Profilleiste, die ebenfalls auf ihrer Oberseite den Formverlauf der bündig zusammengesetzten Formteile aufweist. Die Formteile und die Profilleiste werden mittels Schrauben und Muttern auf der Grundplatte befestigt. Durch den Einsatz des aus gesintertem Wolframkarbid bestehenden Hartmetalls ist eine hohe Verschleißfestigkeit gewährleistet.According to the invention, the upper part comprises a plurality of molded parts on the front side seen in the material flow, additionally on the rear side a one-piece, continuous profile strip, which also has the shape of the flush-fitted molded parts on its upper side. The molded parts and the profile strip are attached to the base plate using screws and nuts. A high wear resistance is guaranteed through the use of the hard metal consisting of sintered tungsten carbide.

Darüberhinaus ist sichergestellt, daß keine Markierungen auf den Betondachpfannen auftreten, da die einteilige, durchgehende Profilleiste an ihrer freien Kante keine Trennfuge aufweist.In addition, it is ensured that no markings appear on the concrete roof tiles, since the one-piece, continuous profile strip has no parting line on its free edge.

Ein besonderer Vorteil ist es, daß die Profilleiste in der Höhe über Langlöcher verstellbar ist. Da gerade auf der in Materialfluß gesehenen Rückseite der Verschleiß in der Praxis größer ist, kann durch Höherstellen der Profilleiste ein Ausgleich geschaffen werden, ohne daß die Profilleiste teilweise oder als ganzes ersetzt werden muß. Insgesamt gesehen, befriedigt das erfindungsgemäß aufgebaute Profilmundstück sowohl das Bedürfnis der Möglichkeit der Anpassung gewisser Teile an den Verschleiß, als auch die Möglichkeit des Ersatzes von Teilbereichen, die höherem Verschleiß unterliegen.It is a particular advantage that the height of the profile strip can be adjusted via elongated holes. Since the wear is greater in practice, especially on the rear side seen in the flow of material, a compensation can be created by raising the profile strip without the profile strip having to be replaced in whole or in part. All in all, the profile mouthpiece constructed according to the invention satisfies both the need for the possibility of adapting certain parts to the wear, and the possibility of replacing parts which are subject to greater wear.

Im folgenden wird ein bevorzugtes Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert.A preferred exemplary embodiment of the invention is explained in more detail below with reference to the drawing.

Es zeigt:

  • Fig. 1 eine Querschnittsansicht des erfindungsgemäßen Profilmundstücks; und
  • Fig. 2 eine Seitenansicht durch das in Fig. 1 gezeigte erfindungsgemäße Profilmundstück.
It shows:
  • Figure 1 is a cross-sectional view of the profile mouthpiece according to the invention. and
  • Fig. 2 is a side view through the profile mouthpiece according to the invention shown in Fig. 1.

In den Figuren ist das erfindungsgemäße Profilmundstück allgemein mit 10 bezeichnet. Während des Betriebs wirkt es in einem Extruder (nicht gezeigt) mit einer entsprechend ausgebildeten Profilwalze zusammen, um das aus einem nicht gezeigten Trichter kommende Betonmaterial zu Betondachsteinen zu verarbeiten. Das Oberteil besteht erfindungsgemäß aus mehreren Formteilen 2,3, 4 und 5. Die Anzahl und Größe der Formteile ist nicht kritisch, sondern kann in geeignetem Rahmen beliebig gewählt werden. Im vorliegenden Fall sind die Formteile 2,3,4 und 5 in etwa gleichgroß und auf der in Materialfluß gesehenen Vorderseite angeordnet. Die Formteile 2,3,4 und 5 bestehen aus Hartmetall, während die Grundplatte 6, wie üblich, aus normalem Stahl gebildet ist. Von besonderer erfindungsgemäßer Bedeutung ist die Profilleiste 1, die aus einem Teil besteht und auf der Rückseite der Formteile 2,3,4 und 5 durchgehend ist, d.h. die Profilleiste 1 deckt sämtliche Formteile nach hinten ab und ist bezüglich der Oberfläche an die aneinanderangrenzenden Formteile 2,3,4 und 5 angepaßt. Durch die Einteiligkeit der Profilleiste 1 ist gewährleistet, daß die zwischen den Formteilen 2,3,4 und 5 vorhandenen Trennfugen 7 vor Abzug der Betondachpfanne vom erfindungsgemäßen Profilmundstück 10 aufhören und deshalb keine unerwünschten Markierungen hinterlassen.The profile mouthpiece according to the invention is generally designated 10 in the figures. During operation, it interacts in an extruder (not shown) with a suitably designed profile roller in order to process the concrete material coming from a hopper, not shown, into concrete roof tiles. According to the invention, the upper part consists of several molded parts 2, 3, 4 and 5. The number and size of the molded parts is not critical, but can be chosen as desired in a suitable frame. In the present case, the molded parts 2, 3, 4 and 5 are approximately the same size and are arranged on the front side seen in the material flow. The molded parts 2, 3, 4 and 5 consist of hard metal, while the base plate 6, as usual, is formed from normal steel. Of particular importance according to the invention is the profile strip 1, which consists of one part and is continuous on the back of the molded parts 2, 3, 4 and 5, i.e. the profile strip 1 covers all the molded parts to the rear and is adapted in terms of surface to the adjacent molded parts 2, 3, 4 and 5. The one-piece construction of the profile strip 1 ensures that the separating joints 7 present between the molded parts 2, 3, 4 and 5 stop before the concrete roof tile is removed from the profile mouthpiece 10 according to the invention and therefore do not leave any undesired markings.

Ferner dürfte einleuchten, daß die mehrbelasteten Ecken des Profilmundstücks, nämlich die Formteile 2 und 5, bei Bruch und dergleichen leicht ersetzt werden können, ohne daß das Profilmundstück 10 insgesamt ausgetauscht werden muß.Furthermore, it should be clear that the more loaded corners of the profile mouthpiece, namely the molded parts 2 and 5, can easily be replaced in the event of breakage and the like, without the profile mouthpiece 10 having to be replaced as a whole.

Die Befestigung der Formteile 2,3,4 und 5 am Stahlträger bzw. der Grundplatte 6 wird durch Schrauben 9 und Muttern 8 vorgenommen. Die Anordnung und Anzahl der Schrauben und Muttern kann in geeignetem Rahmen gewählt werden. Insbesondere können auch zur Befestigung Spannplatten verwendet werden, die winklig zur Grundplatte verlaufende T-Nuten aufweisen.The molded parts 2, 3, 4 and 5 are fastened to the steel carrier or the base plate 6 by screws 9 and nuts 8. The arrangement and number of screws and nuts can be selected in a suitable frame. In particular, clamping plates can be used for fastening, which have T-slots running at an angle to the base plate.

Ein besonders vorteilhafter Aspekt des erfindungsgemäßen Profilmundstücks 10 ist die Regulierbarkeit der Profilleiste 1 bezüglich ihrer Höhe. Da die Profilleiste 1 stärker abgenutzt wird als die im Materialfluß davor liegenden Formteile, kann die Profilleiste 1 nach einem gewissen Abrieb bzw. Abschliff angehoben werden, wozu die im Langloch verlaufende Schraube vorübergehend gelöst wird.A particularly advantageous aspect of the profile mouthpiece 10 according to the invention is the adjustability of the profile strip 1 with respect to its height. Since the profile strip 1 is more worn than the molded parts lying in front of it in the material flow, the profile strip 1 can be raised after a certain abrasion or sanding, for which purpose the screw running in the elongated hole is temporarily loosened.

Claims (5)

1. Profile mouthpiece for producing concrete roof stones with a profile-possessing upper part made from hard metal and a base plate (6) to which is fixed the upper part, in which the latter has several shaped parts (2, 3, 4, 5) on the front side considered in the material flow, characterized in that the upper part on the back comprises a one-part through profile strip (1), fixed by means of screws (9) and nuts (8) to the base plate (6).
2. Profile mouthpiece according to claim 1, characterized in that the height of the profile strip (1) is adjustable by means of elongated holes.
3. Profile mouthpiece according to claim 1, characterized in that four shaped parts are provided, which are made from finely ground spark eroded hard metal.
4. Profile mouthpiece according to claim 1, characterized in that the base plate (6) is made from steel, particularly tool steel.
5. Profile mouthpiece according to claim 1, characterized in that gripping plates with T-slots at an angle to the base plate (6) are provided for fixing the shaped parts.
EP88115054A 1987-11-12 1988-09-15 Doctor blade for manufacturing concrete tiles Expired - Lifetime EP0315753B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88115054T ATE51574T1 (en) 1987-11-12 1988-09-15 SMOOTHERS FOR THE MANUFACTURE OF CONCRETE ROOFING TILES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3738361A DE3738361C1 (en) 1987-11-12 1987-11-12 Profile mouthpiece for the production of concrete roof tiles
DE3738361 1987-11-12

Publications (2)

Publication Number Publication Date
EP0315753A1 EP0315753A1 (en) 1989-05-17
EP0315753B1 true EP0315753B1 (en) 1990-04-04

Family

ID=6340302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115054A Expired - Lifetime EP0315753B1 (en) 1987-11-12 1988-09-15 Doctor blade for manufacturing concrete tiles

Country Status (3)

Country Link
EP (1) EP0315753B1 (en)
AT (1) ATE51574T1 (en)
DE (1) DE3738361C1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8307535U1 (en) * 1983-03-16 1983-07-14 Mandt, Werner, Dipl.-Ing., 2153 Neu Wulmstorf Profile mouthpiece for the production of concrete roof tiles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB739860A (en) * 1953-03-30 1955-11-02 Aodogan O Rahilly Improvements in machines for moulding tiles and the like
DD125721A1 (en) * 1976-04-08 1977-05-11
AT368436B (en) * 1980-02-26 1982-10-11 Bramac Dachsteinwerk Gmbh DEVICE FOR PRODUCING PROFILED ROOF TILES FROM CONCRETE OR THE LIKE.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8307535U1 (en) * 1983-03-16 1983-07-14 Mandt, Werner, Dipl.-Ing., 2153 Neu Wulmstorf Profile mouthpiece for the production of concrete roof tiles

Also Published As

Publication number Publication date
EP0315753A1 (en) 1989-05-17
ATE51574T1 (en) 1990-04-15
DE3738361C1 (en) 1989-01-26

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