Rapid thermal cycle injection molding device based on graphene coating

Abstract

The invention discloses a rapid heating-cycle molding set based on a graphene coating. The rapid heating-cycle molding set comprises a polymer plasticizing and injection device, a mold clamping device, a mold and a frame. The mold comprises positioning, guiding, a cavity and a graphene coated rapid heating-cycle unit; the graphene coating rapid heating-cycle unit comprises a silicon-based graphene coating, a DC power supply, a cooling water pipe, a thermocouple and a temperature control system; the surface of the cavity is evenly provided with the silicon-based graphene coating; the DC power supply is connected with two ends of the graphene coating through copper electrodes, forming a power loop; the thermocouple is close to the surface of the cavity and is connected with the temperature control system; the temperature control system is connected with the DC power supply and a cooling water control valve. The graphene coating retains physical characteristics, high thermal conductivity and high electric conductivity of graphene monomer; the graphene coating which is continuous and compact can be used as a film resistance heater, driven by an external power supply to conform to the complex surface shape of the cavity of the mold, thus fishing the rapid heating-cycle molding process.

Description

technical field [0001] The invention belongs to the technical field of injection molding of the material processing discipline, and particularly relates to a rapid thermal cycle injection molding technology. Background technique [0002] With the development of micro-electromechanical, automobile, construction, aerospace and other industries, people have put forward requirements for industrial products such as energy saving, environmental protection, beauty, comfort, etc. Therefore, plastic products are facing more beautiful appearance, thinner wall thickness, lighter weight, The structure is more precise and the optical performance is better. As one of the most widely used plastic processing methods, injection molding requires continuous technological innovation to meet the needs of market development. In recent years, a new injection molding processing technology, rapid thermal cycle injection molding technology, has been introduced. Compared with traditional injection m...

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Problems solved by technology

[0004] The present invention aims at the defects of polluted cavity and poor thermal uniformity existing in traditional cavity surface rapid thermal cycle injection molding technology, and proposes a new rapid thermal cycle injection molding technology for cavity surface heating, based on graphene coating rapid thermal cycle injection Molding technology, which can significantly increase the temperature rise rate of the cavity surface, avoid polluting the mold cavity, improve the thermal uniformity of the cavity, and meet the injection molding requirements of three-dimensional complex structures, ultra-thin structures, and micro-nano structures

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