Roctool

Revology Sa

Tyco Electronics - Simel

Alexandre Guichard

José Feigenblum

Bruno Peltier

Julien Dossmann

Gérard Legerot

Damien Perrier

Yann Mocellin

A device for compacting and consolidating a textile preform comprising continuous fibers impregnated with thermoplastic polymer, and a method for obtaining a part using such a device. The device comprises a die, an induction heating device and a cooling device to cool the die. The die includes a form comprising a cavity that corresponds to the shape of the part, which form extends depth-wise between an entry plane and a bottom and is inserted into a frame. The induction heating device comprises two inductors extending in hollows of the form, each forming a winding in a plan, substantially parallel to the entry plane of the cavity, and located between the entry plane and the bottom of the form.

Device and method for compacting and consolidation of a part in composite material with a thermoplastic matrix reinforced by continuous fibers, particularly fibers of natural origin

The invention concerns a device for heating a surface by induction, in particular for molding or transforming a part made of thermoplastic or thermosetting composite material. The device comprises a body having at least one portion made of magnetic and heating conducting material wherein is provided a plurality of closed cavities proximate the surface to be heated, each cavity surrounding a field winding. The heat produced by induction on the walls of the cavity is transferred by conduction to the heating surface. The distance between the cavities and the position of said cavities relative to the heating surface are such that the heating is substantially uniform on said surface.

Induction heating device and method for making a workpiece using such a device

A mold having a first part with a carcass with a molding zone added thereto to provide a mechanical interface between the molding zone and the carcass. Inductors of the mold extend along a longitudinal direction in cavities between the mechanical interface and the molding zone. A cooling device of the mold extends at the mechanical interface between the molding zone and the carcass.

Quick heating and cooling mold

A method and device for pre-heating a first molding surface of a mold with an open position and a closed position defining a closed cavity between the first pre-heated molding surface and a second molding surface. A core is inductively heated outside the mold by placing the core inside a coil having an AC current passing there through. The core is inserted between the molding surfaces of the mold in the open position. The first molding surface is preheated by transferring the heat between the core and the first molding surface. The core is then removed and the mold is closed.

Method and device for preheating a mold for injection molding

Chair

A mold with a self-contained heating device comprising a mold body, a connector and an adjustment coil. The mold body comprises comprising an induction heating or tooling circuit having a resistance Rand an inductance L. The tooling circuit comprises an inductor extending inside a closed cavity of the mold body. The connector connects the tooling circuit to a high-frequency current generator. The adjustment coil has a resistance Rand an inductance Lthat does not induce current in the mold body. The adjustment coil is connected to the tooling circuit, between the tooling circuit and the connector.

Device for adjusting the quality factor of a mold with a self-contained induction heating system

A molding device for the shaping of a material includes:

Device for shaping materials using induction heating that enables preheating of the device

A heating device for the transformation of a material, includes: a lower mold element or matrix, made of an electrically conductive material and having a molding zone for contacting with the material to be transformed; an upper element that lacks a molding zone, made of an electrically conductive material; inductor elements for generating a magnetic field that envelops the matrix and the upper element, with the matrix and the element being electrically insulated from one another during the induction heating phase so that the surfaces opposite these two elements delimit an air gap in which the magnetic field that induces currents circulates at the surface of the molding zone of the matrix, thus making it possible to localize the action of the inductors at the interface of the molding zone/material to be transformed; and deformable pressure element, arranged between the matrix and the upper element, able to exert uniform pressure on the material to be transformed.

Device for converting materials using induction heating and deformable compacting means

The present invention concerns a device for molding of thermoplastic matrix composite materials or thermosetting materials. Two mold casings that are mobile relative to each other, electrically conductive material include a molding zone designed to be in contact with the material to be transformed, and an induction circuit for generating a magnetic field. The faces of one of the two mold casings are situated so as to be facing induction circuit, except for the molding zones, being coated with a shielding layer made of a non-magnetic material preventing the magnetic field from penetrating into the mold casings. The mold casings are electrically insulated from each other during the molding phase to define an air gap wherein flows the magnetic field that induces currents at the surface of the molding zones, thus localizing the heating at the interface between the molding zone and the material to be transformed.

Device for transforming materials by induction heating

The invention relates to a method and a device which are used to heat materials in order to produce objects industrially, especially by mass production, and which allow a large variety of transformation methods.

Method and device for inductively heating conductive elements in order to shape objects

Mold for transforming a material comprising a plastic and/or a composite material, wherein the mold includes a mold body having at least one impression arrangement. A heating arrangement directly heats at least one of the material and an intermediary surface impression arranged adjacent to the material. The at least one impression arrangement includes an insulating material that prevents transfer of calorific energy from the material to the mold body, and vice-versa. The insulating material includes a mineral resin which includes an association of non-organic constituents. An insulating device is arranged one of within the insulating material and between the insulating material and the mold body. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Growing community of inventors

La Chapelle du Mont du Chat, France

Alexandre Guichard