Method and device for the production of tubular structures that are reinforced with a strengthening support
US7402216B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2003 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Oct 25, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for the production of reinforced tube-shaped structures (1) of rubber layers and reinforcement layers (2, 3) has the steps of:a) applying a first rubber layer (2a) with a first extrusion unit (4a) onto a series of sequential rigid cylindrical mandrels (5) 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 (α1) referred to the advancement axis (x) with a bobbin creel unit (10a) having means which rotate about the advancing mandrels (5);c) applying atleast one further rubber layer (2b) to the first filament layer utilizing at least one additional extrusion unit (4b);d) continuously measuring the advancement speed (v) of the mandrels (5);controlling the quantity, which is applied via the first extrusion unit (4a), in dependence upon the measured advancement speed (v) in order to obtain a defined desired thickness of the first rubber layer (2a);f) controlling the rotational speed of the first bobbin creel unit (10a) during the rotation about the mandrels (5) in dependence upon the advancement speed (v) in order to obtain a filament lay…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.