Gas generator

In this fully automatic STIWA machine, ignition modules for side airbags are assembled, tested and packaged. These are used in gas generators in cars and are a kind of „mini-rocket“ that triggers the airbag in an emergency.

The individual parts are fed as bulk material, isolated and processed in welding and joining processes. The propellants are placed in buckets in the explosion protection devices and emptied into the protective enclosures, dosed and filled into the assembly. Functional tests are then carried out and the assembled parts are labeled. The finished products are prepared fully or partially automatically in disposable or reusable packaging for transport.

FRICTION WELDING IN 3.5 SECONDS

Friction welding involves clamping the gas generator tubes on a rotary plate. The screws are transferred to the welding head and pressed against the tube with high torque and contact force. The friction heat causes the screws to bond with the tube.

CAPACITOR JOINING TECHNOLOGY

A water-cooled electrode precisely positions a membrane on the fixed tube. Resistance welding with capacitor discharge is used to weld the membrane into the tube. A changeable fixture enables short cycle times.

ACCURATE DOSING OF PYROTECHNIC MATERIAL

The pyrotechnic tablets are filled with precision and fully automatically within an explosion protection system. The highest level of cleanliness is taken into account in order to avoid the carryover and accumulation of pyrotechnic dust.