DE261814C

DE261814C -

Info

Publication number: DE261814C
Application number: DENDAT261814D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT,PATENT OFFICE,

Es sind bereits Vorrichtungen zur Herstellung von rohrförmigen Gegenständen bekannt geworden, bei welchen das Formgut zwischen eine äußere Form und einen zylindrischen Kern eingeschüttet wird, wonach die Form um ihre Achse in Drehung gebracht und in der Längsrichtung gegenüber dem Kern oder umgekehrt der Kern gegenüber der Form ver-■ schoben wird. Ferner ist es an sich bekannt, ίο eine, elastische Masse zwischen einen umlaufenden Mantel und einen exzentrisch zur Mantelachse liegenden Formkern zu pressen.Devices for the production of tubular objects are already known become, in which the molded product between an outer shape and a cylindrical Core is poured, after which the mold is rotated around its axis and in the longitudinal direction with respect to the core or, conversely, the core with respect to the shape is pushed. Furthermore, it is known per se, ίο an elastic mass between a circumferential To press jacket and a mold core lying eccentrically to the jacket axis.

Doch sind diese Vorrichtungen nicht zur Herstellung von Rohren mit ringförmigen Erhöhungen und Vertiefungen geeignet, da diese Erhöhungen oder Vertiefungen beim Aufheben der Form oder beim Ausheben des Formkerns zerstört werden würden.However, these devices are not for the production of tubes with annular protrusions and depressions suitable as these elevations or depressions when picked up the mold or would be destroyed when the mold core is excavated.

Es ist ferner bekannt, nach dem Einstampfen des Rohres in eine feste Form den Kprn um seine Achse zu drehen und einen Kernteil zum Herstellen der Muffe exzentrisch zu verschieben, doch wird dadurch das Formgut zerschleudert und erst nach längerer Drehung des Kernes gleichmäßig an der Formwandung verteilt, außerdem wird hierbei der verschiebbare Teil des Kernes von einer Seite stark abgenutzt.It is also known, after the pipe has been tamped into a solid form, the Kprn to rotate about its axis and to eccentric a core part for making the socket move, but the material to be molded is thrown out and only after a long rotation of the core evenly distributed on the mold wall, in addition, the sliding Part of the core severely worn from one side.

Gemäß der Erfindung ist nun ^.entweder der Formkern gegenüber dem Formmantel oder ^: letzterer gegenüber dem Formkern exzentrisch verstellbar.According to the invention ^ 'either the mandrel relative to the mold casing or ^is: the latter against the mold core eccentrically adjustable.

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Die plastische Masse wird zwischen die Wandungen des Formmantels und Formkerns eingebracht, worauf der Formkern in exzentrische Lage zum Formmantel gebracht wird, wobei entweder nur der äußere Formmantel oder der Formkern oder auch beide in Umdrehung versetzt werden. Durch den Formkern wird die an der Formwandung bereits verteilte Masse an die Wandung des Mantels angewalzt und bei Anwendung einer profilierten Walze gleichzeitig entsprechende ringförmige Erweiterungen oder Einschnürungen im Formling gebildet. Durch gegenseitiges Zentrischstellen der Formteile werden die Einschnürungen freigelegt, so daß der Formkern nun frei aus der Form herausnehmbar ist und es außerdem möglich ist, je nach der Einstellung der Exzentrizität, Rohre von verschiedener Wandstärke herzustellen.The plastic mass is introduced between the walls of the mold shell and mold core, whereupon the mold core is brought into an eccentric position to the mold shell, wherein either only the outer mold jacket or the mold core or both in rotation be moved. The mold that is already distributed on the mold wall is caused by the mold core Mass rolled onto the wall of the jacket and, when using a profiled roller, corresponding ring-shaped at the same time Enlargements or constrictions formed in the molding. By mutual centric positioning of the molded parts, the constrictions are exposed so that the mold core can now be freely removed from the mold and it is also possible, depending on the setting of the eccentricity, to have tubes of different types Manufacture wall thickness.

Auf der Zeichnung ist der Erfindungsgegenstand beispielsweise in einer Ausführungsform dargestellt, und zwar inThe subject of the invention is on the drawing for example shown in one embodiment, namely in

Fig. ι in einem Längsschnitt und inFig. Ι in a longitudinal section and in

Fig. 2 in einem Querschnitt.Fig. 2 in a cross section.

Fig. 3 zeigt ein Ausführungsbeispiel einer Rohrverbindung.Fig. 3 shows an embodiment of a pipe connection.

Die Maschine besteht aus dem äußeren Formmantel C, welcher an einem mit einer Riemenscheibe T versehenen Teller H befestigt ist und einem inneren Formkern A, welcher durch Arme oder Rippen N (Fig. 2) mit seiner Nabe V verbunden ist. Die Nabe V sitztThe machine consists of the outer mold shell C, which is attached to a plate H provided with a belt pulley T , and an inner mold core A, which is connected to its hub V by arms or ribs N (FIG. 2). The hub V is seated

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Claims

loosely on the shaft JF ", which is mounted with its upper pin L 4n an arm U and can be turned by means of a handwheel or a handle G. At its lower end, the shaft F is provided with a bore E into which an in engages the machine frame mounted pin D. The geometric axes of both pins L and D coincide and run parallel to the ιό axis of the hub V. The action of the machine is as follows: In the space between the mold jacket C and the mold core A, which is set centrally to this the plastic mass (e.g. concrete) is introduced, whereupon the mold C is set in rotation by means of the belt S. Then, by turning the handle or handwheel G, the mold core A is gradually moved out of the concentric position A1 (Fig. 2) brought into the eccentric position A, whereby the mass is gradually pressed against the mold shell and is rolled evenly due to the free rotation of the core A on the shaft F. In order to allow the mass to emerge from d To prevent the machine, the mold jacket C is provided with an annular cover /. After the tube has been completely rolled out, the core A is brought back into the previous position concentric to the mold, lifted out of the mold C by means of the arm U and the column W, which can be moved vertically in the guide Y, and placed on the column W turned to the side. The mold C can then be lifted from the table H and the finished tube B can be removed from the table. The machine can also be designed in such a way that the mold shell C is adjusted relative to the core A, and either core A alone or core and shell are set in rotation at the same time. For the production of special pipes, e.g. B. the one shown in Fig. 3, in which the pipe end not provided with a socket and the socket interior are provided with the same card-shaped boundary surfaces, the mold jacket C is provided with a corresponding extension for the socket and with a constriction K to form a stepped surface, while the domes are formed by the cover / and a corresponding profile M of the mold core. To produce other tubular objects, the two parts C and A and the cover / are modified accordingly and provided with the desired profiles or the like. Ρλτεν τ-An Proverbs:

1. Machine for the production of pipes and other cylindrical hollow bodies from plastic mass, z. B. Concrete

0. Like., Consisting of an outer rotating ^; ble mold jacket and an inner rotatable mold core, characterized in that either the mold core (A ) rotating loosely on the shaft (F) can be adjusted eccentrically against the mold jacket (C) or the mold jacket (C) against the mold core (A) .

2. Embodiment of the machine according to claim 1 with a profiled mold jacket, characterized in that the mold core (A) is provided with an outwardly projecting base surface (M) and lugs which correspond to the profiling of the briquettes.

1 sheet of drawings.