Device for positioning a film, and moulding machine incorporating said device

In a device for positioning a film of determined format, intended to serve as at least a partial coating of the lateral surface of an object disposed in a cavity between two pieces of a machine at least one of said pieces of said machine being mobile with respect to the other in a first direction, said device comprising means for taking the film from a magazine containing a plurality of said films, comprising a film taking member whose outside form corresponds to the lateral surface of the object to be coated, means for applying the film on the lateral surface of said film taking member, and means for rotating said member about its axis so that, during rotation of said member, the film which is applied thereon is wound therearound at least partially, means being provided for conveying said film-taking means between a position of taking the film from the magazine and a work position between said pieces, the means for conveying the film-taking means comprise a system of two intersecting racks meshing with each other, of which one, parallel to a first direction (X, X'), is fast with the first piece of the machine and the other, which is parallel to a second direction (Y, Y') at right angles to said first direction (X, X') and which is adapted to slide in a guide fast with the second piece of the machine, is fast with said film-taking means.