EP0646443B1 - Device for making undercut cavities - Google Patents

Device for making undercut cavities Download PDF

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Publication number
EP0646443B1
EP0646443B1 EP94115608A EP94115608A EP0646443B1 EP 0646443 B1 EP0646443 B1 EP 0646443B1 EP 94115608 A EP94115608 A EP 94115608A EP 94115608 A EP94115608 A EP 94115608A EP 0646443 B1 EP0646443 B1 EP 0646443B1
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EP
European Patent Office
Prior art keywords
forming
slide
cam
opposite
resetting
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
EP94115608A
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German (de)
French (fr)
Other versions
EP0646443A1 (en
Inventor
Albert Joseph Antoine Laumans
Reinhard Dipl.-Ing. Lepsien
Heinz Müller
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.)
RIETER-WERKE HAENDLE GMBH & CO. KG
Original Assignee
Rieter-Werke Handle & Co KG GmbH
Rieter Werke Haendle 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 Rieter-Werke Handle & Co KG GmbH, Rieter Werke Haendle GmbH filed Critical Rieter-Werke Handle & Co KG GmbH
Publication of EP0646443A1 publication Critical patent/EP0646443A1/en
Application granted granted Critical
Publication of EP0646443B1 publication Critical patent/EP0646443B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/12—Apparatus or processes for treating or working the shaped or preshaped articles for removing parts of the articles by cutting
    • 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
    • B28B7/20—Moulds for making shaped articles with undercut recesses, e.g. dovetails

Definitions

  • the invention relates to a device for forming depressions in objects made of clay, in particular roof tiles.
  • a device for forming a tie hole in a roof tile in the form of a mandrel movable by means of a fluid cylinder is known from DE-U-19 19 945.
  • Such recesses can also be used to hold solar panels on the roof tiles, such as. B. is described in DE-C-41 41 664. There is a hole running parallel to the tile plane in a protruding cam of a roof tile, into which a hook welded to the solar cell panel engages.
  • EP-A-0 547 285 also deals with solar roof tiles and shows a device for forming depressions in the roof tiles.
  • such a device is to be designed in such a way that it enables molding, in particular, closed recesses in clay objects, such as roof tiles, on an industrial scale, as long as the clay material is still soft.
  • a lifting and deburring device with suction head for a roof tile which is used to lift the finished roof tile out of a mold and to deburr its edges, is given in DE-C-1 241 329.
  • the shaping device according to the invention can be integrated with such a lifting and deburring device or the like and can thus be operated jointly.
  • all the depressions of the desired type required for a roof tile can be molded quickly and reproducibly into the still soft clay material simultaneously by actuating the drive. This enables the recesses to be shaped in large series production.
  • a device according to the invention according to FIGS. 1 to 4 comprises two fluid cylinders 2, which are pivoted at 4 parallel to one another, but with their piston rods 6 being pushed out in the opposite direction, in a suction plate 1 of a suction head 1, not shown in more detail, designated by the reference number 1.
  • 10 cams 12 are articulated via articulated heads 8 and articulated bolts 10, with one-piece deflection levers 14, which are pivotably mounted on stationary pins 16 via ball bearings 18.
  • Each cam 12 has two parallel cam surfaces 20, 22 opposite one another on a small diameter and two cam surfaces 24, 26 opposite one another on a large diameter, which are at an angle of 45 ° to the first cam surfaces 20, 22.
  • the cam surfaces 20, 22 rest on surfaces 21, 23 of slide rods 27, 28 which are guided parallel to one another and to the main or longitudinal axis A in the direction transverse to the main or longitudinal axis A (guidance not drawn).
  • the slide rods 27, 28 each have shaped slides 29, 30; 31, 32, which are aligned with one another in the direction transverse to the longitudinal axes of the cylinders.
  • the tension springs 34, 36 are, as shown in Fig. 1, stretched between the slide rods 27, 28. If the cams 12 are pivoted back from the left, pivoted-out position in FIG. 1 to the right rest position in FIG. 1, the slide rods 27, 28 consequently move towards one another transversely to the main axis A due to the contraction of the tension springs 34, 36, with them keep the cam 12 in contact and the die ends 29, 30; 31, 32 move out of the shaped depressions until finally the rest state shown on the right in FIG. 1 is reached. In this idle state, the slide rods 27, 28 are held by the tension springs 34, 36 with their surfaces 21, 23 in contact with the cam surfaces 20, 22, which lie on the smallest diameter of the cams 12.
  • a roof tile blank 50 is indicated in dash-dotted lines, the upper contour of which corresponds negatively to the underside contour of the suction head 1.
  • a trough 52 with side walls 53, 57 is formed in the roof tile blank.
  • four opposed closed recesses 54, 56 are formed in the roof tile blank 50 by means of the molding slides 29 - 32.
  • the roof tile blank 50 can now be demolded, deburred and deposited using the suction head with a deburring device in a known manner (DE-C-1 241 329).

Description

Die Erfindung betrifft eine Vorrichtung zum Formen von Vertiefungen in Gegenständen aus Ton, insbesondere Dachziegeln.The invention relates to a device for forming depressions in objects made of clay, in particular roof tiles.

Eine Vorrichtung zum Formen eines Anbindeloches in einem Dachziegel in Form eines mittels Fluidzylinder beweglichen Dorns ist aus der DE-U-19 19 945 bekannt.A device for forming a tie hole in a roof tile in the form of a mandrel movable by means of a fluid cylinder is known from DE-U-19 19 945.

Solche Vertiefungen können auch zur Halterung von Solarzellenplatten, an den Dachziegeln dienen, wie dies z. B. in der DE-C-41 41 664 beschrieben ist. Dort ist ein parallel zur Ziegelebene verlaufendes Loch in einem vorstehenden Nocken eines Dachziegels vorgesehen, in das ein an der Solarzellenplatte angeschweißter Haken eingreift.Such recesses can also be used to hold solar panels on the roof tiles, such as. B. is described in DE-C-41 41 664. There is a hole running parallel to the tile plane in a protruding cam of a roof tile, into which a hook welded to the solar cell panel engages.

Auch die EP-A-0 547 285 befasst sich mit Solar-Dachziegeln und zeigt eine Vorrichtung zum Formen von Vertiefungen in den Dachziegeln.EP-A-0 547 285 also deals with solar roof tiles and shows a device for forming depressions in the roof tiles.

Mit der Erfindung soll eine solche Vorrichtung so ausgebildet werden, daß sie ein Formen von insbesondere geschlossenen Vertiefungen in Gegenständen aus Ton, wie Dachziegein, im großtechnischen Maßstab ermöglicht, solange das Tonmaterial noch weich ist.With the invention, such a device is to be designed in such a way that it enables molding, in particular, closed recesses in clay objects, such as roof tiles, on an industrial scale, as long as the clay material is still soft.

Zur Lösung dieser Aufgabe dienen die Merkmale des Anspruchs 1.The features of claim 1 serve to achieve this object.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

Ein Beispiel für eine in Anspruch 10 genannte Abhebe- und Entgratvorrichtung mit Saugkopf für einen Dachziegel, welche zum Herausheben des fertiggeformten Dachziegels aus einer Form und zum Entgraten von dessen Kanten eingesetzt wird, ist in der DE-C-1 241 329 angegeben. Zur großtechnischen Herstellung ist die Formvorrichtung nach der Erfindung mit einer solchen oder ähnlichen Abhebe- und Entgratvorrichtung integrierbar und damit gemeinschaftlich betreibbar.An example of a lifting and deburring device with suction head for a roof tile, which is used to lift the finished roof tile out of a mold and to deburr its edges, is given in DE-C-1 241 329. For large-scale production, the shaping device according to the invention can be integrated with such a lifting and deburring device or the like and can thus be operated jointly.

Mit der Formvorrichtung nach der Erfindung lassen sich sämtliche für einen Dachziegel erforderlichen Vertiefungen der gewünschten Art gleichzeitig durch Betätigen des Antriebes schnell und reproduzierbar in das noch weiche Tonmaterial einformen. Dies ermöglicht eine Formung der Vertiefungen in Großserienproduktion.With the molding device according to the invention, all the depressions of the desired type required for a roof tile can be molded quickly and reproducibly into the still soft clay material simultaneously by actuating the drive. This enables the recesses to be shaped in large series production.

Die Erfindung ist im folgenden anhand schematischer Zeichnungen an einem Ausführungsbeispiel mit weiteren Einzelheiten näher erläutert.The invention is explained below with reference to schematic drawings of an embodiment with further details.

Es zeigen:

Fig. 1
eine Draufsicht auf eine Formvorrichtung nach der Erfindung, deren Umriß in etwa dem Umriß eines Dachziegels entspricht, in welchen die Vertiefungen gemäß der Erfindung einzubringen sind, wobei in der linken Hälfte die Betätigungsstellung mit in Formposition befindlichen Formschiebern und in der rechten Hälfte die Ruhestellung mit in zurückgezogener Ruhestellung befindlichen Formschiebern dargestellt ist;
Fig. 2
einen Längsschnitt, nach der Linie II-II,
Fig. 3
einen Schnitt nach der Linie III-III in Fig. 1 mit den Formschiebern in Betätigungsstellung und
Fig. 4
einen Schnitt nach der Linie IV-IV in Fig. 1 mit den Formschiebern in Ruhestellung.
Show it:
Fig. 1
a plan view of a molding device according to the invention, the outline of which corresponds approximately to the outline of a roof tile, in which the recesses are to be made according to the invention, wherein in the left half the operating position with the mold slides in the mold position and in the right half the rest position with in retracted rest position mold slides is shown;
Fig. 2
a longitudinal section along the line II-II,
Fig. 3
a section along the line III-III in Fig. 1 with the slide valves in the actuating position and
Fig. 4
a section along the line IV-IV in Fig. 1 with the slide valves in the rest position.

Eine Vorrichtung nach der Erfindung gemäß den Fig. 1 bis 4 umfaßt zwei Fluidzylinder 2, welche parallel zueinander, jedoch mit entgegengesetzter Ausschiebrichtung ihrer Kolbenstangen 6 in einer insgesamt mit der Bezugszahl 1 bezeichneten Saugplatte eines nicht näher gezeigten Saugkopfes 1 schwenkbar bei 4 angelenkt sind. An den freien Enden der Kolbenstangen 6 dieser Fluid-Zylinder, welche sowohl pneumatisch als auch hydraulisch ausgeführt sein können, sind über Gelenkköpfe 8 und Gelenkbolzen 10 Nocken 12 über damit einstückige Umlenkhebel 14 angelenkt, welche schwenkbar auf ortsfesten Zapfen 16 über Kugellager 18 gelagert sind. Jeder Nocken 12 hat zwei einander auf einem kleinen Durchmesser gegenüberliegende parallele Nockenflächen 20, 22 und zwei auf einem großen Durchmesser gegenüberliegende Nockenflächen 24, 26, die unter einem Winkel von 45° zu den ersten Nockenflächen 20, 22 stehen.A device according to the invention according to FIGS. 1 to 4 comprises two fluid cylinders 2, which are pivoted at 4 parallel to one another, but with their piston rods 6 being pushed out in the opposite direction, in a suction plate 1 of a suction head 1, not shown in more detail, designated by the reference number 1. At the free ends of the piston rods 6 of these fluid cylinders, which can be designed both pneumatically and hydraulically, 10 cams 12 are articulated via articulated heads 8 and articulated bolts 10, with one-piece deflection levers 14, which are pivotably mounted on stationary pins 16 via ball bearings 18. Each cam 12 has two parallel cam surfaces 20, 22 opposite one another on a small diameter and two cam surfaces 24, 26 opposite one another on a large diameter, which are at an angle of 45 ° to the first cam surfaces 20, 22.

Bei synchronem Ausfahren der Kolbenstangen 6 beschreiben die Umlenkhebel 14 Kreise um die Zapfen 16, was aufgrund der schwenkbaren Anlenkung der Zylinder 2 bei 4 möglich ist.When the piston rods 6 extend synchronously, the deflection levers 14 describe circles around the pins 16, which is possible at 4 due to the pivotable articulation of the cylinders 2.

Im in Fig. 1 rechts gezeichneten Ruhezustand liegen die Nockenflächen 20, 22 an Flächen 21, 23 von Schieberstangen 27, 28 an, die parallel zueinander und zur Haupt- oder Längsachse A in Richtung quer zur Haupt- oder Längsachse A beweglich geführt sind (Führung nicht gezeichnet). An ihren beiden Enden haben die Schieberstangen 27, 28 jeweils Formschieber 29, 30; 31, 32, die in Richtung quer zu den Zylinderlängsachsen aufeinander ausgerichtet sind.In the idle state shown on the right in FIG. 1, the cam surfaces 20, 22 rest on surfaces 21, 23 of slide rods 27, 28 which are guided parallel to one another and to the main or longitudinal axis A in the direction transverse to the main or longitudinal axis A (guidance not drawn). At their two ends, the slide rods 27, 28 each have shaped slides 29, 30; 31, 32, which are aligned with one another in the direction transverse to the longitudinal axes of the cylinders.

In der linken Hälfte der Fig. 1 und in Fig. 3 sind die Kolbenstangen 6 der Zylinder 2 ganz ausgefahren, wie für den unteren Zylinder 2 in Figur 1 dargestellt. In dieser Stellung sind die Nocken 12 folglich um den Zapfen 16 und das Kugellager 18 in die gezeigte Position geschwenkt, so daß die Nockenflächen 24, 26 die Schieberstangen 27, 28 in die Formposition der Formschieber 29, 30, 31, 32 spreizen.In the left half of Fig. 1 and in Fig. 3, the piston rods 6 of the cylinder 2 are fully extended, as for the lower cylinder 2 shown in Figure 1. In this position, the cams 12 are consequently pivoted about the pin 16 and the ball bearing 18 into the position shown, so that the cam surfaces 24, 26 spread the slide rods 27, 28 into the shape position of the molded slides 29, 30, 31, 32.

Dagegen sind in der rechten Hälfte der Fig. 1 und in Fig. 4 die (zeitlich verschobene) Ruhestellung dargestellt. In dieser Stellung sind die Kolbenstangen 6 ganz eingefahren, wie für den oberen Zylinder 2 in Fig. 1 dargestellt.In contrast, the (temporally shifted) rest position is shown in the right half of FIG. 1 and in FIG. 4. In this position, the piston rods 6 are completely retracted, as shown for the upper cylinder 2 in FIG. 1.

Die Zugfedern 34, 36 sind, wie in Fig. 1 gezeigt, zwischen den Schieberstangen 27, 28 aufgespannt. Werden die Nocken 12 von der in Fig. 1 linken, ausgeschwenkten Position in die in Fig. 1 rechte Ruheposition zurückgeschwenkt, bewegen sich die Schieberstangen 27, 28 folglich aufgrund der Zusammenziehung der Zugfedern 34, 36 quer zur Hauptachse A aufeinander zu, wobei sie mit den Nocken 12 in Kontakt bleiben und die Formenden 29, 30; 31, 32 aus den geformten Vertiefungen herausfahren, bis schließlich der rechts in Fig. 1 gezeichnete Ruhezustand erreicht ist. In diesem Ruhezustand sind die Schieberstangen 27, 28 von den Zugfedern 34, 36 mit ihren Flächen 21, 23 in Anlage an den Nockenflächen 20, 22 gehalten, welche auf dem kleinsten Durchmesser der Nocken 12 liegen.The tension springs 34, 36 are, as shown in Fig. 1, stretched between the slide rods 27, 28. If the cams 12 are pivoted back from the left, pivoted-out position in FIG. 1 to the right rest position in FIG. 1, the slide rods 27, 28 consequently move towards one another transversely to the main axis A due to the contraction of the tension springs 34, 36, with them keep the cam 12 in contact and the die ends 29, 30; 31, 32 move out of the shaped depressions until finally the rest state shown on the right in FIG. 1 is reached. In this idle state, the slide rods 27, 28 are held by the tension springs 34, 36 with their surfaces 21, 23 in contact with the cam surfaces 20, 22, which lie on the smallest diameter of the cams 12.

In Fig. 3 ist strichpunktiert ein Dachziegelrohling 50 angedeutet, dessen obere Kontur negativ der unterseitigen Kontur des Saugkopfes 1 entspricht. Im Dachziegelrohling ist eine Mulde 52 mit seitlichen Wänden 53, 57 eingeformt. Durch das wie oben beschriebene erfolgte Ausschieben der beiden Schieberstangen 27, 28 in die Formposition gemäß Fig. 3 werden vier paarweise gegenüberliegende geschlossene Vertiefungen 54, 56 in den Dachziegelrohling 50 mittels der Formschieber 29 - 32 eingeformt. Nach vollendetem Formvorgang werden die Schieberstangen 27, 28 in die Ruheposition gemäß Fig. 4 zurückgezogen. Der Dachziegelrohling 50 kann nun mittels des Saugkopfes mit Entgratvorrichtung in bekannter Weise (DE-C-1 241 329) entformt, entgratet und abgelegt werden.A roof tile blank 50 is indicated in dash-dotted lines, the upper contour of which corresponds negatively to the underside contour of the suction head 1. A trough 52 with side walls 53, 57 is formed in the roof tile blank. As a result of the two slide rods 27, 28 being pushed out as described above into the molding position according to FIG. 3, four opposed closed recesses 54, 56 are formed in the roof tile blank 50 by means of the molding slides 29 - 32. After the molding process the slide rods 27, 28 are retracted into the rest position according to FIG. 4. The roof tile blank 50 can now be demolded, deburred and deposited using the suction head with a deburring device in a known manner (DE-C-1 241 329).

Claims (9)

  1. A device for forming cavities in articles of clay, more particularly in roof tiles, comprising at least one forming slide (27, 29, 31; 28, 30, 32) having a free forming end (29 - 32) having the negative contour of the required cavity, the forming slide being movable with non-positive guidance into a forming position for forming the cavities in the soft clay material, the movement being provided by means of a cam (12) which is adapted to be driven in rotation about a spindle (16) fixed to the device, and withdrawable therefrom back into a position of rest, characterised in that the cam (12) is articulated on the free end of the piston rod (6) of a fluid cylinder (2) so as to be pivotable by way of a lever (14).
  2. A device according to claim 1, characterised in that the cam (12) has two diametrically opposite camming surfaces (24, 26) which between them form the maximum diameter of the cam and, when actuated, spread opposite forming slides apart from one another.
  3. A device according to claim 2, characterised in that two parallel fluid cylinders (2) are arranged with their piston rods (6) disposed in opposition to one another, said piston rods each acting on two separate cams (12) for synchronous actuation of pairs of opposite forming slides.
  4. A device according to claim 3, characterised in that each forming slide has in each case two forming ends (29, 31; 30, 32) at the opposite ends of a slide rod (27, 28) on which the two cams (12) act.
  5. A device according to any one of claims 1 to 4, characterised in that the resetting device (34, 36) is provided for resetting the or each forming slide after the completed forming operation.
  6. A device according to claim 5, characterised in that the resetting device is formed by at least one spring.
  7. A device according to claim 5 or 6, characterised in that the resetting device comprises two tension springs (34, 36) which act on two parallel slide rods (28, 28).
  8. A device according to any one of claims 1 to 7, characterised in that it is adapted to be lowered into an upwardly open trough (52) of a roof tile (50) to accommodate a solar cell panel and in that the cavities (54, 56) are adapted to be formed in opposite side walls of the trough for mounting the solar cell panel.
  9. A device according to any one of claims 1 to 8, characterised in that it is integrated into a lifting and de-burring device with a suction plate (1) for a roof tile (50).
EP94115608A 1993-10-01 1994-10-04 Device for making undercut cavities Expired - Lifetime EP0646443B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4333616A DE4333616C1 (en) 1993-10-01 1993-10-01 Device for forming depressions in objects made of clay, in particular roof tiles
DE4333616 1993-10-01

Publications (2)

Publication Number Publication Date
EP0646443A1 EP0646443A1 (en) 1995-04-05
EP0646443B1 true EP0646443B1 (en) 1997-09-03

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ID=6499249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94115608A Expired - Lifetime EP0646443B1 (en) 1993-10-01 1994-10-04 Device for making undercut cavities

Country Status (3)

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EP (1) EP0646443B1 (en)
DE (2) DE4333616C1 (en)
ES (1) ES2107097T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1310973B1 (en) * 1999-09-28 2002-02-27 Sacmi PERFECTED CASTING MOLD FOR THE FORMING OF SANITARY EQUIPMENT.
CN110948660A (en) * 2019-12-20 2020-04-03 江西佳鸿电瓷制造有限公司 Porcelain insulator appearance processingequipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE95391C (en) *
GB288355A (en) * 1926-12-08 1928-04-10 Arthur Handley Improved press for shaping covers of teapots and the like
CH378757A (en) * 1961-01-09 1964-06-15 Fonderie Officine Meccaniche B Process and equipment for molding clay tiles in a continuous cycle
DE1919945A1 (en) * 1969-04-19 1971-04-15 Daimler Benz Ag Device for controlling the caster on steered axles of motor vehicles
DE9011207U1 (en) * 1990-07-30 1990-10-04 Welz, Reiner, 8904 Friedberg, De
DE4141664C1 (en) * 1991-12-17 1993-07-01 Rieter-Werke Haendle Kg, 7750 Konstanz, De

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Publication number Publication date
EP0646443A1 (en) 1995-04-05
DE4333616C1 (en) 1995-08-17
DE59403950D1 (en) 1997-10-09
ES2107097T3 (en) 1997-11-16

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