Riveting of plastics: hot riveting, ultrasonic riveting and riveting by plastic deformation. Operation to join together different thermoplastic materials or thermoplastic materials with other materials, for example metal.
Riveting is an assembly technique used to join together articles made of the same thermoplastic material, articles made of different thermoplastics and, also, thermoplastic articles with articles made of other materials. Riveting can be carried out using three different techniques.
It uses pulsated heat to make the thermoplastic material of the insert malleable. The material is locally heated up by means of a blow of hot-air or a thermode. When the material of the insert is sufficiently deformed, it receives a certain pressure until it gets the wished rivet-like shape. The pressure remains constant also during the following cooling phase, to grant a good fixation between the two articles.
It uses the heat generated by the mechanical vibrations emitted by a sonotrode to the material of the insert. The sonotrode is designed and built to give to the malleable material of the insert the desired rivet-shape.
RIVETING BY PLASTIC DEFORMATION
Also called cold riveting. The inserts nested into the pre-moulded holes are cold-clinched by pressure.
Insertion by riveting can be applied to articles produced by means of injection moulding, extrusion moulding, compression moulding, thermoforming, blow moulding, suction 2D/3D (2k) and rotational moulding.
Among the articles riveted by the customized machines of GS Finishing Machines there are the following, listed as an example: battery boxes, automotive pedalboards, supports for the steering column, filter boxes, tanks, pipes, conveyor ducts, light cases and accessory components of any nature.