EP0351325B1 - Vorrichtung zum Herstellen eines ringförmigen Elementes aus Beton, insbesondere einer Schachtauskleidung - Google Patents

Vorrichtung zum Herstellen eines ringförmigen Elementes aus Beton, insbesondere einer Schachtauskleidung Download PDF

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Publication number
EP0351325B1
EP0351325B1 EP19890420234 EP89420234A EP0351325B1 EP 0351325 B1 EP0351325 B1 EP 0351325B1 EP 19890420234 EP19890420234 EP 19890420234 EP 89420234 A EP89420234 A EP 89420234A EP 0351325 B1 EP0351325 B1 EP 0351325B1
Authority
EP
European Patent Office
Prior art keywords
mold
piston head
coupling
cap
installation according
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
EP19890420234
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English (en)
French (fr)
Other versions
EP0351325A1 (de
Inventor
Johann Schlusselbauer
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.)
SCHLUESSELBAUER MASCHINENBAU
Original Assignee
Schluesselbauer Maschinenbau
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Application filed by Schluesselbauer Maschinenbau filed Critical Schluesselbauer Maschinenbau
Publication of EP0351325A1 publication Critical patent/EP0351325A1/de
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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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
    • B28B21/24—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like
    • 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
    • B28B21/70—Methods or machines specially adapted for the production of tubular articles by building-up from preformed elements
    • B28B21/74—Producing pipe bends, sockets, sleeves; Moulds therefor

Definitions

  • the invention relates to an installation for manufacturing an annular concrete part, in particular a well nozzle, which comprises, on the one hand, a molding device composed of a mold core and a mold body surrounding the remote mold core to define an annular space and, on the other hand, a mold cap which can rotate around its main axis and intended to be placed on the concrete poured into the annular space, said cap being mounted on a head piston can go up and down and able to form a centering tip in the front region of the annular part.
  • the well nozzles and other annular parts which can be aligned axially one after the other, have, at their front ends, directed towards one another, complementary centering nozzles by which the different parts couple to each other.
  • molding devices are used which are composed of a mold core and a mold body between which there remains an annular space in which the quantity of concrete necessary for vibrating is vibrated. the room.
  • annular space of the molding device can be closed in the region of the bottom by a corresponding mold ring, for the manufacture of the upper centering tip, a mold cap must be applied to the concrete poured into the annular space with an appropriate pressure and rotate this cap around its axis, preferably in reciprocating motion, in order to be able to mold the centering tip with sufficient precision.
  • this mold cover is constituted by a rotating ring belonging to a piston head by means of which the necessary contact pressure can be exerted.
  • a disadvantage is that, before demolding, it is necessary, necessarily, to lift the piston with the upper cap to release it from the part, so that not only the manufacturing tolerances are widened, but also there remains a risk of deterioration of the molded centering tip because the concrete's own resistance before hardening is relatively low.
  • the installation comprises a rotatable mold cap intended to be placed on the poured concrete in an annular space defined between a mold core and a mold body.
  • the mold cap is permanently mounted on a piston head by means of controlled rods whose retraction and extension movement ensures the vertical positioning of the mold cap.
  • the object of the invention is therefore to avoid these drawbacks and to improve the installations and methods, of the kind described above, using simple means, so that well nozzles or other parts can be manufactured.
  • concrete annulars having flawless centering tips and having a high stability of resistance of the dimensional dimensions of manufacture.
  • the invention solves the problem posed by the fact that the mold cap is connected to the piston head by a temporary coupling device ensuring, by opening and closing, the gripping or loosening of the mold cap.
  • the mold cap Since the mold cap is connected to the piston head by means of a temporary coupling device ensuring an opening or closing, it may not be separate it from the centering tip to unmold the part, so that the stresses detrimental to the holding of the dimensions, which would otherwise act on the concrete not yet hardened in the region of the centering tip during the extraction of the mold cap, are thus deleted. In this way, the mold cap can only be separated from the centering tip after an appropriate hardening of the latter and thanks to the fact that the concrete solidity is now sufficient, there is no longer any alteration of the holding of the dimensions.
  • the mold cap which remains on the part, forms, moreover, an effective protection of the centering tip against mechanical deterioration, so that it is possible to effectively avoid hair cracks or other harmful degradations. the strength of the centering tips. It is certainly necessary to provide a separate mold cap for each part, but the number of mold caps required remains limited because, after having been separated from the parts, the mold caps can be used for the manufacture of new parts.
  • the coupling device intended to connect a mold cap to the piston head by a removable connection, can be of various construction.
  • the mold cap could be provided with coupling lugs which could lock into openings receiving the piston head, this requiring, however, an appropriate alignment of the mold cap relative to the head. piston.
  • Simpler coupling conditions are obtained when, in another embodiment of the invention, the coupling device is preferably composed of at least three collets distributed over the periphery of the piston head and who can grasp a mold cap, even if the cap is not exactly aligned with the piston head.
  • clamps which are provided between the arms of the clamps which are extended beyond the axes of articulation of the jaws of the clamps and which, when they are supplied, close the clamp jaws against the force of an opening spring, which ensures very simple control of the coupling device.
  • the clamps certainly provide self-centering for the mold cap which they grip but, due to the freedom of oscillation of the clamping jaws, the mold cap, gripped by these jaws, will at least partially accompany, the vibration movement of the molding device, which can lead to an undesirable transmission of vibrations to the piston head.
  • the clamps can bear, at least in the closed position, against a stop secured to the clamp support by means of stop elements secured to the clamp support, by means of elastic rubber-like elements.
  • These elastic elements, of the rubber type can, moreover, define an initial position for the collets.
  • the mold caps In order for the coupling device to be able to grip the different mold caps securely, the mold caps must have a corresponding coupling collar.
  • the various mold caps may have an annular coupling collar intended for the coupling device, which makes the mold caps independent of an angular position of the coupling which should be determined in advance.
  • the coupling device must be able to grip the annular coupling collar, as is the case, for example, for collets.
  • the piston head has at least three centering ribs distributed around the circumference and provided with inclined guide surfaces to receive the annular coupling collar of the mold cap, it is already possible to obtain a centering of the mold during the movement. of axial approximation between the mold cap and the piston head, because if the annular coupling collar meets the guide surface of minus a centering rib, while it is in an off-center position, it is pushed towards the axis of the piston head.
  • the piston head can finally carry at least three ejector fingers movable in the direction axial, distributed around the circumference, to eject the mold cap, so that, when the piston head is raised, after opening the clamps, the mold cap is kept pressed against the part until the ejector fingers move away from the mold cap.
  • the ejector fingers must be controlled by a corresponding force, which is carried out, advantageously, by means of a pressure cylinder.
  • Fig. 1 shows an installation according to the invention, intended for the manufacture of an annular concrete part, in a schematic axial section of the region of the edge of the piston head.
  • Fig. 2 is a section, perpendicular to the axis of the piston head, made along line II-II of FIG. 1 , on a reduced scale.
  • the piston head 1 which can go up and down under the action of a lifting cylinder not shown, and which is part of the installation shown for the manufacture of a concrete well nozzle, has a rotating crown 2 which can be driven in alternating rotation using an oscillation cylinder 3 shown in FIG. 2 .
  • This rotating crown 2 carries a coupling device, preferably formed by three clamps 4 distributed on the circumference and intended to couple to a mold cap 5 which, for this purpose, is provided, in accordance with the representation of fig. 1 , an annular coupling collar 6 which engages between the two jaws 7 of the collets 4 .
  • the jaws 7 of pliers are articulated using pivot pins 9 , in a pliers support 10 which is fixed to the rotating ring 2 in the region of a through opening 11 giving passage to the jaws 7 of pliers.
  • each of the clamps 4 there is provided a clamping cylinder 12 placed between the arms 8 of the clamps, which extend above the hinge pins 9 , the clamping cylinder 12 acting at the against the force of an opening spring 13 which is interposed between the arms 8 of the clamps, on the side opposite to the clamping cylinder 12 with respect to the articulation axes 9 , in a bore 14 produced in a carrying element 15 .
  • the arms 8 of the clamps carry, on their side directed towards the carrying element 15 , elastic elements 16 of the rubber type which cooperate, at least in the closed position of the clamps 4 shown in the figures, with the carrying part 15 playing the role of stop, which excludes, to a large extent, the transmission of the vibration forces acting on the mold sleeve 5 to the rotating ring 2 via the clamps 4 .
  • These elastic elements 16 also have the effect of defining an initial position for the jaws 7 of the pliers.
  • the rotating crown 2 can be provided with at least three centering ribs 17 distributed over its circumference, which form an inclined guide surface 18 for guiding the coupling collar 6 of the mold cap 5 , so that, if the mold cap 5 is placed in an off-center position relative to the rotating crown 2 , during the movement of arrival of the mold cap 5 , in a direction corresponding to its main axis on the guide surface 18 of at least one centering rib 17 , the coupling collar 6 is pushed back towards the axis of the piston head 1 , at least to a sufficient extent to guarantee the safety of the gripping of the coupling collar 6 by the collets 4 .
  • the temporary coupling device ensuring opening or closing functions, formed by the clamps 4 , the mold cap 5 , placed on the concrete poured between a mold core and a surrounding mold body at a distance.
  • the mold core can be separated from the piston head 1 , after the upper centering tip of the well nozzle has been molded to the shape of the profile of the mold cap, the cap 5 being able to remain on the collar centering the nozzle, at least during the demolding operation of the nozzle, to form a protective ring.
  • the object of the invention finds a particularly advantageous application for the production of centering nozzles formed by forming at the end of well nozzles or the like in concrete.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Wire Processing (AREA)

Claims (8)

1. Vorrichtung zum Herstellen eines ringförmigen Teiles aus Beton, insbesondere einer Schachtauskleidung, die einerseits eine Formvorrichtung aufweist, die aus einem Formkern und einem Formkörper gebildet ist, der den Formkern in einem Abstand umgibt, um einen ringförmigen Raum zu bilden, und andererseits einen Formdeckel (5) aufweist, der sich um seine Hauptachse drehen kann und dazu dient, auf den Fließbeton in dem ringförmigen Raum gesetzt zu werden, wobei der Deckel einerseits auf einen Kolbenkopf (1) gesetzt ist, der sich auf- und abbewegen kann und mit dem Kopf verbunden ist durch eine zeitweilige Kupplungsvorrichtung, und andererseits geeignet ist, ein Zentrierende im Frontbereich des ringförmigen Teiles zu bilden,
   dadurch gekennzeichnet, daß die Kopplungsvorrichtung aus einer Anordnung von Klemmzangen (4) gebildet ist, die am Umfang des Kolbenkopfes (3) verteilt angeordnet sind, um durch Öffnen und Schließen das Aufnehmen und Loslassen des Formdeckels (5) sicherzustellen.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jede Klemmzange (4) zwei Arme (8) aufweist, die bei Aufbringung der Kraft einer Öffnungsfeder (13) durch einen Klemmstelltrieb (12), der zwischen den Armen (8) angeordnet ist, bewegt und betätigt werden.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß jeder Arm (8) auf einem Zangenträger (10) mittels einer Schwenkachse (9) angelenkt ist, wobei die Öffnungsfeder (13) zwischen den Verlängerungen des Arms (8), die gegenüber dem Klemmstelltrieb (12) bezüglich der Schwenkachsen (9) angeordnet sind, gesetzt ist.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Klemmzangen (4) wenigstens in der Schließstellung sich mittels elastischer Kautschukelemente (16) auf einem Anschlag (15) abstützen, der mit dem Zangenträger (10) verbunden ist.
5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Formdeckel (5) einen ringförmigen Verbindungskragen (6) aufweist, um mit der Kopplungsvorrichtung zusammenzuwirken.
6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zangenanordnung wenigstens drei Klemmzangen aufweist.
7. Vorrichtung nach Anspruch 5 und 6, dadurch gekennzeichnet, daß der Kolbenkopf (1) wenigstens drei Zentrierungsrippen (17) aufweist, die an seinem Umfang verteilt angeordnet sind, und geneigte Führungsflächen (18) aufweisen, um den ringförmigen Kopplungskragen (6) des Formdeckels (5) zu führen.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß der Kolbenkopf (1) wenigstens drei Auswurffinger (19) aufweist, die an seinem Umfang verteilt angeordnet sind, wobei sie in der axialen Richtung bewegbar sind und dazu bestimmt sind, den Formdeckel (5) auszuwerfen.
EP19890420234 1988-06-30 1989-06-30 Vorrichtung zum Herstellen eines ringförmigen Elementes aus Beton, insbesondere einer Schachtauskleidung Expired - Lifetime EP0351325B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0170288A AT398185B (de) 1988-06-30 1988-06-30 Vorrichtung zum herstellen eines ringförmigen falzes an einem werkstück aus beton, insbesondere einem schachtring
AT1702/88 1988-06-30

Publications (2)

Publication Number Publication Date
EP0351325A1 EP0351325A1 (de) 1990-01-17
EP0351325B1 true EP0351325B1 (de) 1992-06-03

Family

ID=3519135

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Application Number Title Priority Date Filing Date
EP19890420234 Expired - Lifetime EP0351325B1 (de) 1988-06-30 1989-06-30 Vorrichtung zum Herstellen eines ringförmigen Elementes aus Beton, insbesondere einer Schachtauskleidung

Country Status (4)

Country Link
EP (1) EP0351325B1 (de)
AT (2) AT398185B (de)
DE (1) DE68901691T2 (de)
ES (1) ES2033121T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1223014A1 (de) * 2001-01-16 2002-07-17 Schlüsselbauer, Johann Vorrichtung zur Herstellung von Ringkörpern aus Beton

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US766739A (en) * 1902-05-20 1904-08-02 Maurice T Stevens Pipe-mold.
GB260791A (en) * 1925-12-02 1926-11-11 Int De Lavaud Mfg Corp Ltd Improvements in cores for pipe moulds
US1941812A (en) * 1932-04-21 1934-01-02 Muntz Eric Percival Machine for the production of a plurality of substantially similar units
US2359214A (en) * 1943-02-03 1944-09-26 Frank C George Mold core element
US2870513A (en) * 1955-04-28 1959-01-27 Archie R Gagne Pipe making apparatus
FR1190293A (fr) * 1958-01-21 1959-10-12 Brouiller & Cie Presse et procédé de fabrication pour former les évasements à cloche sur les tuyaux en ciment
DK108118C (da) * 1963-11-07 1967-09-04 Pedershaab Maskinfabrik As Støbeapparat til fremstilling af betonrør med en rundtgående not eller hulkel i rørets spidsende.
US3452407A (en) * 1966-09-30 1969-07-01 Concrete Pipe Machinery Co Ring positioning apparatus for concrete pipe manufacture
US3696182A (en) * 1970-06-29 1972-10-03 Carl R Joelson Method for producing concrete pipe
DK127176B (da) * 1972-02-09 1973-10-01 Pedershaab Maskinfabrik As Støttering til nystøbte rør af beton eller lignende materiale under hærdning.
US4101622A (en) * 1974-07-15 1978-07-18 Ameron, Inc. Method of casting beveled pipe
DE3203543A1 (de) * 1982-02-03 1983-08-04 Georg Prinzing GmbH & Co KG Betonformen- und Maschinenfabrik, 7902 Blaubeuren Verfahren und vorrichtung zum herstellen von betonformteilen
EP0089420A1 (de) * 1982-03-23 1983-09-28 Ballast-Nedam Groep N.V. Verfahren, Vorrichtung und Form zur Herstellung von Betonrohren
DE3323340A1 (de) * 1983-06-29 1985-01-03 Georg Prinzing GmbH & Co KG Betonformen- und Maschinenfabrik, 7902 Blaubeuren Formeinrichtung zum herstellen von betonformteilen
DE3400349A1 (de) * 1984-01-07 1985-07-18 Prinzing Georg Gmbh Co Kg Verfahren und vorrichtung zum herstellen von formteilen aus beton

Also Published As

Publication number Publication date
DE68901691D1 (de) 1992-07-09
AT398185B (de) 1994-10-25
ES2033121T3 (es) 1993-03-01
ATA170288A (de) 1994-02-15
DE68901691T2 (de) 1993-02-18
EP0351325A1 (de) 1990-01-17
ATE76800T1 (de) 1992-06-15

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