Contitech Luftfedersysteme Gmbh

Rainer Oehl

Klaus Binder

Markus Berger

Stefan Wode

Christoph Bederna

Harald Kranz

Achim H&uuml;ls

Fritz R&ouml;themeyer

Roland Wilmer

The invention relates to a method and a device for the removal of a tube blank () located on a support core (). The tube blank () is detached from the support core () by means of the introduction of a medium through a device (), whereby a detachment may be alternatively or additionally achieved by the application of a vacuum to a sleeve () enclosing the tube blank ().

Device and method for the detachment of a tube blank from a support core

A method for the production of reinforced tube-shaped structures () of rubber layers and reinforcement layers () has the steps of: a) applying a first rubber layer () with a first extrusion unit () onto a series of sequential rigid cylindrical mandrels () which are coupled to each other and which are driven at an advancement speed (v) in the direction of an advancement axis (x); b) applying a first filament layer at defined desired filament angles (&#x3b1;) referred to the advancement axis (x) with a bobbin creel unit () having means which rotate about the advancing mandrels (); c) applying atleast one further rubber layer () to the first filament layer utilizing at least one additional extrusion unit (); d) continuously measuring the advancement speed (v) of the mandrels (); controlling the quantity, which is applied via the first extrusion unit (), in dependence upon the measured advancement speed (v) in order to obtain a defined desired thickness of the first rubber layer (); f) controlling the rotational speed of the first bobbin creel unit () during the rotation about the mandrels () in dependence upon the advancement speed (v) in order to obtain a filament layer having a defined desired filament angle (&#x3b1;).

Method and device for the production of tubular structures that are reinforced with a strengthening support

A method for the production of curved thread-reinforced tubular structures composed of rubber layers and of strengthening layers and an accompanying device. In one aspect, the method includes the application of a first rubber layer to the circumference of mandrels driven forward in a feed direction (X) and winding on of a multiplicity of parallel reinforcing threads, having defined thread angles (&#x3b1;) with respect to the feed axis (x), by means of a bobbin creel, to form a first thread ply. The mandrels are led through a rotating deflection element surrounding the mandrels and the reinforcing threads are guided so as to be distributed on the inner circumference. An application of a covering rubber layer may be performed (after the optionally multiple execution of the previous steps, alone or in combination). The mandrels are led through the deflection element of the bobbin creel eccentrically in the region of the deflection element.

Method and device for the production of curved thread-reinforced tubular structures

An arrangement () for guiding individual reinforcement filaments () onto a carrier () has a positioning disc () with a plurality of filament guides () arranged distributed on a circular ring of the positioning disc (). The carrier is moveable in the direction of the carrier axis (X). The arrangement also includes a rotationally symmetrical deflecting element (). The positioning disc () and the deflecting element () each concentrically surround the carrier (). The deflecting element () is mounted within the positioning disc () and aligned axially to the positioning disc (). The inlet-end peripherally extending inner edge () of the deflecting element () faces toward the carrier () and is curved. The filament guides () open directly at the curved inner edge ().

Device for the guiding of individual reinforcement threads

An apparatus and method for separation of tubes produced continuously on a row of mandrels, continuously coupled to one another, by the mandrels being advanced in a conveying direction (X) and by material layers being applied to the mandrels. A material difference exists from the mandrel material at a connection point of successive mandrels. A measuring device detects the connection point of the successive mandrels, and a separating device, arranged downstream of the measuring device in the conveying direction (X), provides for the separation of the tubes. The separating device is controlled by the measuring device in order to align the separating device with the connection point. The separating device has a cutting head rotatable about the connection point, and advances in the conveying direction (X) synchronously with the mandrels during the separating operation.

Method and device for the separation of tubes

A drum brake () having a rotatably journalled drum () and means for adjusting the torque applied to the drum () has several peripherally-extending take-up slots () for filaments () with the slots being spaced from each other in the direction of the drum axis (X). With such an arrangement, a plurality of filaments can be adjusted to constant filament tensions simultaneously.

Thread brake

A spiraling arrangement () for applying a spirally-shaped filament layer to an elongated carrier () which is drivable in the direction of the carrier longitudinal axis (X). The arrangement has a rotor (), which is rotatable about the carrier longitudinal axis (X), and a plurality of filament bobbin carrier shafts () which extend in the direction of the carrier longitudinal axis (X). The carrier shafts () are arranged distributed on a circumscribed circle radius of the rotor () and are each configured to take up a plurality of filament bobbins (). On one end face () of the rotor (), filament brake elements () are arranged distributed over the periphery and can be driven synchronously with respect to each other. The filaments () are taken off the filament bobbins () and are guided by filament guide elements () via the filament brake elements () and an annular comb (), which encloses the carrier (), onto the carrier ().

Spiraling device

A device is disclosed for applying individual reinforcing threads onto a tubular layer. The device contains a positioning ring with equidistant holes that lie on a circumferential line, with the positioning ring surrounding and concentric with a rotationally symmetric, funnel-shaped deflection element. The deflection element deflects the reinforcing threads that are guided from radially outward to radially inward through the holes f the positioning ring into an essentially axial direction, wherein all the threads assume an equidistant spacing from one another. Also disclosed is a process for manufacturing an unfinished tube consisting of several layers with the aid of the device.

Device for incorporating individual reinforcing threads into an unfinished tube and process for manufacturing a thread-reinforced unfinished tube with the aid of this device

Growing community of inventors

Grossburgwedel, Germany

Rainer Oehl