摘要:
An induction-heated mold, including at least one lower portion and one upper portion defining a cavity inside of which a molding material is to be brought to a temperature Ttr greater than 20° C., which is introduced and then shaped, at least one of the mold portions having an area for transferring heat with the molding material, the heat transfer area including at least one sub-area consisting of at least one ferromagnetic material the Curie point Tc of which is between 20 and 800° C. and which is in contact with the molding material and/or with a non-ferromagnetic coating having a thermal conductivity greater than 30 W.m−1.K−1. A method for manufacturing a plastic or composite material product via of the molds according to the invention.
摘要:
The invention relates to a method consisting in: inserting the coating (6) into a shaping and injection-molding mold (14); closing the mold (14) such that the coating (6) is shaped against a shaping surface (22) of the mold (14) as the mold (14) is closed; and, subsequently, overmolding the substrate (4) by injecting a plastic material into the mold (14). According to one aspect of the invention, the shaping surface (22) is induction-heated in order to thermoform the coating (6) as the mold (14) is closed, by generating induced currents that propagate along the shaping surface (22), and the induction heating is stopped in order to set the plastic material.
摘要:
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.
摘要:
Disclosed herein is a method for producing a part comprising at least one layer of fiber-reinforced composite material. Said method encompasses at least the following steps: a) the at least one layer of polymerizable fiber-reinforced composite material is arranged in a shape that has a base and a plurality of elevations; b) at least one mold is placed so as to be in contact with at least one elevation, said mold having a microwave-sensitive material at least on one contact surface towards the at least one elevation; c) the at least one elevation is polymerized by irradiating the at least one mold with microwaves. The mold used has a stable three-dimensional shape and has a contact surface for the part. At least the contact surface is made of microwave-sensitive material.
摘要:
In accordance with an exemplary embodiment, a method for manufacturing a tool comprises applying at least one ferro-magnetic material to at least a portion of a tool face of a different material. The method produces a tool face with varying magnetic properties facilitating substantially uniform induction heating of the tool face.
摘要:
A sound absorbing cover is made of foam containing magnetic filler and is integrally molded in a three-dimensional shape so as to cover at least a part of a mating member that is a noise source. The sound absorbing cover includes side walls that cover side surfaces of the mating member and a bottom wall that covers a bottom surface of the mating member that intersects with the side surfaces of the mating member. The magnetic filler is oriented in a thickness direction of each of the side walls and the bottom wall. A sound absorbing assembly includes the sound absorbing cover and a fixing cover that is attached to the outer peripheral surface of the sound absorbing cover and that fixes, to a base, the sound absorbing cover and the mating member that is a noise source covered by the sound absorbing cover.
摘要:
A light irradiation molding apparatus 1 includes a pair of rubber die units 2A and 2B, which are formed of a rubber material having a property of transmitting light X therethrough and form a cavity between facing sides which face each other, and a light irradiation means 4, which applies light X to a particulate or solid thermoplastic resin 6 arranged in the cavity 20 through surfaces of a pair of the rubber die units 2A and 2B. The light irradiation molding apparatus 1 is constituted so that a pair of the rubber die units 2A and 2B are made to come close to each other while the thermoplastic resin 6 arranged in the cavity 20 is molten by the light X applied from the light irradiation means 4, and a molded article 7 of the thermoplastic resin 6 is formed in the cavity 20 having a reduced volume.
摘要:
The present invention provides a heating unit capable of easily and inexpensively adjusting total impedance based on tire mold size so that a power source can be used at a high power factor, and a tire heating apparatus using the same. A ferromagnetic metallic member 10a heats a tire mold M1 by heat conduction. An induction heating coil C1 is disposed on the side of the ferromagnetic metallic member 10a opposite the tire mold M1 to induction-heat the ferromagnetic metallic member 10a by generating magnetic field lines. A nonmagnetic conductor 30a is disposed on the side of the induction heating coil C1 opposite the ferromagnetic metallic member 10a to shield the magnetic field lines generated by the induction heating coil C1. A heating unit 100a including these elements heats the tire mold M1 storing a tire. A relative positional relationship among the nonmagnetic conductor 30a, the induction heating coil C1 and the ferromagnetic metallic member 10a is set by first spacers 71a and 72a and second spacers 21a to 23a.
摘要:
A molding device for the shaping of a material includes: a lower mold body, or die, made from an electrically conductive material and including a molding zone intended to be in contact with the material to be shaped; an upper mold body, or punch, made from an electrically conductive material, and including a molding zone intended to be in contact with the material to shaped; a removable intermediate part, or core, made of an electrically conductive material, and intended to be inserted between the die and the punch; induction elements for generating a magnetic field that surrounds the die, the punch and the intermediate part; these three components being electrically insulated in pairs, so that the opposite faces of the intermediate part and the die, and those of the intermediate part and the punch, delimit two air gaps in which the magnetic field flows which induces currents at the surface of the molding zones of the die and the punch, thus making it possible to localize the action of the inductors at the surface of the molding zones.
摘要:
A method of fabricating a thermoplastic component using inductive heating is described. The method includes positioning a plurality of induction heating coils to define a process area for the thermoplastic component, wherein the plurality of induction heating coils comprises a first set of coils and a second set of coils. The method also includes controlling a supply of electricity provided to the plurality of inductive heating coils to intermittently activate the coils. The intermittent activation is configured to facilitate prevention of electromagnetic interference between adjacent coils.