Apparatus for the manufacture of a tire in which the carcass reinforcement is formed on a core from a single thread
AssigneeSedepro
InventorsDaniel Laurent, Jean-Claude Mayet
Life of this patent
Estimating the term…
Abstract
A thread, intended to form a carcass reinforcement, is wound in contiguous hoops on a rigid core through an eyelet fastened on a chain mounted on pulleys arranged around the core. The eyelet carries out a reciprocating movement around the core so as to progressively and contiguously lay a hoop upon each forward movement and a hoop upon each return movement.
Claims16
An apparatus for manufacturing a rubber tire in which a reinforcement thread is applied on a support, the surface of which has the shape of the inner surface of the tire, the reinforcement thread applied on the support being held on the support by adherence, comprising a guide means displaced in the space over the trace which the thread will have after it has been wound on the support for laying the reinforcement thread on the support, means for imparting to said guide means a movement permitting winding of the thread on the support from one side to the other of the support and then winding back, means for imparting relative circumferential displacement between the support and guide means from one winding to the next by an amount corresponding to the laying pitch of the thread on the support, means for pressing the thread against the support at each change in direction during the side-to-side movement to adhere the thread to the support and a common frame for accommodating the guide means and the pressing means so that the circumferential displacement is between the support on the one hand, and both the guide means and the pressing means, on the other hand.
A machine for the manufacture of a tire reinforcement, said reinforcement being formed from a thread delivered by a distributor, said thread being laid on a support the surface of which is a building reference for the inner surface of the tire on which all or part of the tire is progressively built, said machine comprising a frame on which the support is mounted, a guide on the frame in guiding and slipping relation with the thread to be laid on the support, means for displacing the guide along a reciprocating path relative to the support, pressers arranged on the frame at least at each end of the path in order to move the thread against the support, means on the frame for imparting a circumferential displacement of the support relative to the guide and pressers at each change in direction of the guide along its reciprocating path, said circumferential displacement corresponding to the laying pitch of the thread on the support, the displacement of the guide after the thread has been pressed against the support and held on the support continuing to withdraw thread from the distributor while presenting the thread above the trace which it will have on the support after laying, the laying taking place progressively behind the path of travel of the guide and at the latest upon the action of another presser which in turn acts at the latest before the opposite movement of the guide along its respective path.
Dependencies are inferred from the claim text.