In hot riveting, thermoplastics are heated and riveted at individual points. One of the components is made of plastic, the other can be made of any material and is loosely placed on the plastic part. The rivet tip is heated to the required temperature and then forms the plastic rivet. After cooling down, a form-fit connection is created.
Hot rivets: High current principle and heating cartridge principle
The cartridge heater principle
Heating cartridges in the riveting tip generate the heat with this principle. It is particularly suitable for a large number of riveting tips.
The high current principle
A connected power supply unit supplies the riveting tip directly with power. This provides a very short heating time of only two seconds. Only the tip is heated, so this system is very efficient.
- The riveting tip is adjusted by a pneumatic cylinder. Height tolerances in the component can be compensated in this way. A linear measuring system with a repeat accuracy of 0.1 mm monitors the riveting process.
- The initial height of the riveting tip can be set for the process via parameters. In this way we monitor whether the rivet dome is available or not.
- It is possible to select whether the shut-off criterion for the process is the riveting duration or the riveting path.
- Rapid cooling of the riveting tip at the end of the process by air flushing.