DE2205403B1

DE2205403B1 -

Info

Publication number: DE2205403B1
Application number: DE19722205403D
Authority: DE
Inventors: Hermann 4330 Muelheim Nuehlen
Original assignee: Individual
Current assignee: Individual
Priority date: 1972-02-04
Filing date: 1972-02-04
Publication date: 1973-06-07
Also published as: DE2205403C2

Description

Die genannte Aufgabe wird erfindungsgemäß dadurch gelöst. daß die Formscheibe den Boden eines mit der Außenluft in Verbindung stehenden, sonst allseitig geschlossenen hohlen Ringraums bildet. der innen durch eine ein starres. mit einem Ende gegen den Innenrand der Formscheibe andrückbares Stützrohr umgebende und mit diesem einen an seinen Enden verschlossenen. an eine Druckmittelleitung anschließbaren Ringspalt bildende dehnbare Gummihaut mit klebstoffabweisender Außenseite, und außen durch eine sich zwischen dem Außen rand der Formscheibe und dem dieser abgewandten Ende des Stützrohrs erstreckende starre kegelige Wand begrenzt ist. According to the invention, the stated object is thereby achieved solved. that the shaped disc is the bottom of a communicating with the outside air, otherwise Hollow annulus that is closed on all sides. the inside by a one rigid. surrounding support tube which can be pressed against the inner edge of the molded disk with one end and with this one closed at its ends. to a pressure medium line expandable rubber skin that can be connected to form an annular gap with an adhesive-repellent outer surface, and outside by a between the outer edge of the molded disc and this remote end of the support tube extending rigid conical wall is limited.

Dabei bezieht sich die Erfindung nicht auf die aufblähbare Gummihaut als solche, weil solche Gummihäute als Mittel zum Aufweiten von rohrförmigen Hohlkörpern seit langem bekannt sind, sondern nur auf deren Anwendung in Verbindung mit den übrigen Merkmalen der Patentansprüche. The invention does not relate to the inflatable rubber skin as such, because such rubber skins are used as a means for expanding tubular hollow bodies have long been known, but only on their application in conjunction with the other features of the claims.

Mit Hilfe der beschriebenen Vorrichtung können Verstärkungseinlagen mit gleichmäßig verteilten und exakt radial gerichteten Fäden in kürzester Zeit von einer einzigen Arbeitskraft mit geringstem Kraftaufwand hergestellt werden. Da die durch die kegelige Umfangswand geführte Gummihaut unter der Einwirkung des ihr zugeführten Druckmittels sowohl das Aufweiten des Schlauchabschnitts wie das Andrükken der Einlagefäden gegen die Formscheibe ist die Handarbeit darauf beschränkt, jeweils einen Schlauchabschnitt auf das formseitige Ende des von der Gummihaut umgebenen Stützrohrs aufzuschieben. das formseitige Schlauchende nach innen um den Stützrohrrand umzulegen. die Andrückvorrichtung für Formscheibe und Stützrohr sowie die Klemmvorrichtung für das umgelegte Schlauchende zu betätigen und Druckmittel in den Spalt zwischen dem Stützrohr und der Gummihaut einzulassen, worauf nach Ablassen des Druckmittels und Trennen der Formscheibe von den übrigen Vorrichtungsteilen Versteifungstinge auf den Innen- und den Außenrand der auf der Formscheibe haftenden Einlage aufgelegt und die beiden überstehenden Einlageränder über die Versteifungsringe nach innen umgelegt und angedrückt sowie schließlich die fertige Einlage von der Formscheibe abgehoben werden können. With the aid of the device described, reinforcement inserts with evenly distributed and precisely radially directed threads in the shortest possible time can be produced by a single worker with minimal effort. Since the rubber skin passed through the conical peripheral wall under the action of the her supplied pressure medium both the expansion of the hose section as well as the By pressing the inlay threads against the shaped disc, the manual work is limited to in each case a hose section on the mold-side end of the surrounded by the rubber skin To push on the support tube. the tube end on the mold side inwards around the edge of the support tube to kill. the pressing device for the shaped washer and support tube as well as the clamping device to operate for the folded end of the hose and pressurized medium into the gap between let in the support tube and the rubber skin, whereupon after releasing the pressure medium and separating the molded disk from the remaining device parts stiffening bars placed on the inner and outer edge of the insert adhering to the molded disc and the two protruding storage edges over the stiffening rings inwards folded over and pressed on and finally the finished insert from the shaped disc can be withdrawn.

Die wesentlichen Teile eines Ausführungsbeispiels für einer Vorrichtung zum Umformen sind in der Zeichnung dargestellt. The essential parts of an embodiment for a device for forming are shown in the drawing.

Wie der gezeichnete Längsschnitt durch eine mit einem Schlauchabschnitt bestückte betriebsbereite Vorrichtung erkennen läßt, bildet eine Formscheibe 1 den Boden eines hohlen Ringraums 2. der innen durch eine ein starres Stützrohr 3 umgebende schlauchförmige Gummihaut und außen von einer starren kegeligen Wand 5 begrenzt ist. die sich zwi- schen dem Außenrand der Fornlscheibel und dem der Formscheibe 1 abgekehrten Ende des Stützrohrs 3 und der Gummihaut4 erstreckt und mit ihrem unteren zylindrischen Rand die Formscheibe 1 umschließt. Like the drawn longitudinal section through one with a hose section equipped ready-to-use device can be seen, a shaped disk 1 forms the Bottom of a hollow annular space 2. the inside by a rigid support tube 3 surrounding it tubular rubber skin and bounded on the outside by a rigid conical wall 5 is. which is between between the outer edge of the shaped disc and that of the shaped disc 1 remote end of the support tube 3 and the rubber skin 4 and extends with its lower cylindrical edge enclosing the shaped disk 1.

Die Gummihaut 4 bildet mit dem Stützrohr 3 einen an dessen Enden abgeschlossenen Ringspalt, der an eine Druckmittel- z. B. Druckluftquelle anschließbar ist. The rubber skin 4 forms with the support tube 3 at its ends closed annular gap, which is connected to a pressure medium z. B. compressed air source can be connected is.

Die Formscheibe 1 ruht auf einem Hubstempel 13, mit dessen Hilfe sie in den zylindrischen Rand der Wand 5 eingeschoben und mit ihrem Innenrand gegen das Stützrohr 3 abgedrückt sowie aus der gezeichneten Lage abgesenkt werden kann. Es ist unwichtig, welche der relativ gegeneinander bewegbaren Teile feststehen und welche bewegbar sind. The shaped disk 1 rests on a lifting ram 13, with the help of which they inserted into the cylindrical edge of the wall 5 and with their inner edge against the support tube 3 can be pressed and lowered from the position shown. It is unimportant which of the parts that can move relative to one another are fixed and which are movable.

Wichtig ist nur, daß die Formscheibe 1 von den übrigen Vorrichtungsteilen so weit getrennt werden kann, daß ihre Formseite frei zugänglich ist und sie im Bedarfsfall gegen eine andere, z. B. eine solche mit einem abweichenden Formprofil ausgewechselt werden kann.It is only important that the shaped disk 1 from the other parts of the device can be separated so far that their form side is freely accessible and they in If necessary against another, z. B. one with a different shape profile can be exchanged.

Zum Festlegen eines die in eine Kautschukmasse eingebetteten und durch diese zusammengehaltenen Einlagefäden enthaltenden Schlauchabschnitts 8, der von der Formseite her über die Gummihaut 4 auf das Stützrohr 3 aufgeschoben und mit seinem unteren Rand um das formseitige Ende des Stützrohrs 3 nach innen umgelegt ist, dient ein schließend von oben in das Stützrohr 3 eingeschobenes Rohr 6, dessen formseitiges Ende kegelig aufgeweitet ist und mit diesem Ende den umgeschlagenen Rand des Schlauchabschnittes 8 hintergreift, sowie ein von unten her in das aufgeweitete Ende des Rohrs 6 einschiebbares kegelstumpfförmiges Klemmstück 7. To set one embedded in a rubber compound and by these held together interlining threads containing hose section 8, the pushed from the mold side over the rubber skin 4 onto the support tube 3 and folded with its lower edge around the mold-side end of the support tube 3 inward is, a closing inserted from above into the support tube 3 tube 6, whose the end of the mold is widened conically and with this end the folded over The edge of the hose section 8 engages behind, as well as a from below into the expanded At the end of the tube 6, the frustoconical clamping piece 7 can be pushed in.

Das Rohr 6 ist relativ dickwandig und enthält an seinem der Formscheibel abgekehrten Ende einen Anschluß für eine Druckmittelleitung 9 sowie einen sich daran anschließenden Kanal 11 der gegenüber dem Stützrohr 3 ausmündet. Das Stützrohr 3 ist seinerseits mit Durchlaßöffnungen 12 für das Druckmittel versehen. Das Stützrohr 3 dient hier also lediglich zum Abstützen der Gummihaut 4. während der Druck des zum Aufblähen der Gummihaut 4 eingeführten Druckmittels vom Rohr 6 aufgenommen wird. The tube 6 is relatively thick-walled and contains the shaped disc on its remote end a connection for a pressure medium line 9 and one attached to it subsequent channel 11 which opens out opposite the support tube 3. The support tube 3 is in turn provided with passage openings 12 for the pressure medium. The support tube 3 is only used here to support the rubber skin 4. during the pressure of the for inflating the rubber skin 4 introduced pressure medium is taken up by the tube 6.

Ein im Rohr 6 geführter Auswerfer 10 dient zur Unterstützung der Abwärtsbewegung des Klemmstücks 7 und des Hubstempels 13 mit der Formscheibe 1 und der daraufliegenden Einlage mit ihrem umgebogenen Ende 8 a. A guided in the tube 6 ejector 10 is used to support the Downward movement of the clamping piece 7 and the lifting ram 13 with the shaped disk 1 and the insert lying thereon with its bent end 8 a.

Die Gestalt, die die aufgeblähte Gummihaut4 am Ende eines Umformungsvorgangs aufweist, ist in der Zeichnung strichpunktiert angedeutet und mit 4 a bezeichnet. The shape that the inflated rubber skin4 at the end of a deformation process has, is indicated in the drawing by dash-dotted lines and denoted by 4 a.

Claims

Claims: 1. Device for reshaping a hose section made of axially running threads embedded in rubber in a thin-layer reinforcement insert for an annular disc-shaped rubber body with between its inner and outer circumference radially directed threads, with a shape corresponding to the reinforcement insert annular shaped disk, a clamping device for the to be fixed on the inner edge one end of the hose section and means for pressing the one with the other At the end of the tube section expanded beyond the outer edge of the molded disk the shaped disk, characterized in that the shaped disk (1) is the bottom of a hollow annulus, which is otherwise closed on all sides, in connection with the outside air (2) Forms the inside by one, a rigid one with one end against the inner edge the shaped disk (1) pressurizable support tube (3) surrounding and with this one its ends closed, to a pressure medium line (9) connectable annular gap forming elastic rubber skin (4) with adhesive-repellent outside, and outside through one between the outer edge of the molded disc (1) and the one facing away from it End of the support tube (3) extending rigid conical wall (5) is limited.

2. Apparatus according to claim 1, characterized in that the clamping device for the one end (8a) of the which is bent inwards around the end of the support tube on the mold side Hose section (8) pushed over the rubber skin (4) from a tube into the support tube (3) inserted tube (6) with a conically widened end and one that can be pressed into this frustoconical clamping piece (7).

3. Apparatus according to claim 2, characterized in that the with its ends tightly against the support tube (3) adjacent tube (6) one to the pressure medium line (9) connectable opposite the support tube provided with passage openings (12) (3) emptying channel (11) contains.

The invention relates to devices according to the generic term of the preceding claim 1. Find the thin-layer reinforcement inserts for example in elastic rubber bodies in the form of annular disks of shaft couplings Use and consist of extending between the inner and outer circumference Threads of plastic or metal. It is evident that for an even, Predictable reaction of such rubber bodies axially, radially and in the circumferential direction acting forces the even distribution and alignment of the reinforcement threads are of considerable importance.

The manufacture of such insoles, which are later preformed between two annular disc-shaped rubber body inserted and with this using Pressure and heat are firmly connected, has so far essentially been done by hand under with the aid of an annular disk-shaped which corresponds to the shape of the reinforcement insert Shaped disk by having a surface that determines the shape of the insert Layer of threads embedded in a rubber compound spread out and against this is pressed. As a result of the adhesive properties as well as the elasticity and stretchability the rubber compound then keep the threads in their given position, so that by placing a wire ring on the inner and outer edge of the Shaped disc and folding over the insert parts protruding inside and outside over the Wire rings completed insert can be lifted from the shaped disk.

It was possible to achieve an at least approximately exact radial alignment to achieve the insert threads by starting from a hose section, that is made up of several layers next to each other and held together by the rubber compound axially parallel threads, the diameter of which is essentially the inner diameter corresponds to the shaped disk and thereby reshapes it to an insert that after fixing of one end of the hose on the inner circumference of the molded disk, the free end of the hose section taken by several workers distributed around the mold disc and outwards Pulled over the shaped disk and finally the threads are pressed against it. Sometimes one also uses the thread to press it against the shaped disk a roller which is moved around the forming disk axis in such a way that it is gradually migrates outwards to the outer edge of the shaped disk.

This way of working is obviously both cumbersome and time-consuming, and requires a considerable amount of human labor.

In addition, this workload by no means always leads to satisfactory results and never to results that are the same as one another, since the threads fail to distribute the insert evenly over the mold surface and align exactly radially between the inner and outer edges of the mold; in addition is a one-sided increasing outward when using a spiral moving roller Do not move the previously at least approximately radially aligned threads avoid.

The object of the invention is to provide a device that the Manufacture of thin-layer reinforcement inserts for annular disc-shaped rubber bodies with exactly radially aligned between its inner and outer circumference in a raw rubber mass embedded threads in a relatively short time with a minimum of human effort Worker allowed.

The invention is based on a device for forming a Tube section made of axially extending threads embedded in rubber into a thin-layer reinforcement insert for an annular disc-shaped rubber body with between its inner and outer circumference radially directed threads, with one of the shape the reinforcement insert corresponding shaped washer, a clamping device for the one end of the hose section to be fixed at its inner edge and means to press the other end over the outer edge of the molded disk expanded hose section to the shaped disc.