What Is Ultrasonic Punching Device?

Ultrasonic Punching

An ultrasonic punching and cutting machine uses instantaneous ultrasonic vibrations to rapidly weld the edges of materials to be welded, resulting in aesthetically pleasing and secure welds.

Combinable Innovative Technology

RPS-RONIC's patented ultrasonic punching technology creates precisely defined openings in the highest-quality plastic parts or textiles. In the automotive sector, ultrasonic punching is suitable for materials such as PP, PP-EPDM, PC/ABS, PC/PBT, or composite materials such as PUR/PUR/ABS for textiles.

As the developer of ultrasonic punching and a global market leader in this field, we utilize this technology in custom equipment for a variety of applications. The automotive industry is particularly benefiting from this innovation. For example, we can punch and weld parking radar brackets, and openings for headlight cleaning systems can be punched directly into pre-painted bumpers with embossed radius patterns. Due to the unique design of the ultrasonic punch, the punch vibrates and presses downward during the stamping process, heating the plastic part while simultaneously creating a slightly curved cut. This leaves the painted surface intact while maintaining a smooth, elegant appearance.

After the cut is completed, the bracket is welded or bonded beneath the aesthetically pleasing cut using a puncture weld.

Advantages

Reduced punching forces due to ultrasonic punch assistance

No stress whitening or fuzz formation in the punched area

Edge welding during punching

Decoupled, stable radius indentations independent of material thickness

Smooth surface punching on painted and unpainted plastic parts

No deformation of painted plastic parts after ultrasonic punching

Painted plastic parts remain smooth despite paint marks on the inner punched wall

Combined welding and punching functions, e.g. for sealing and separating packages

Integration of ultrasonic punching technology in thermoforming packaging processes

Applications

Exterior applications such as perforations in bumpers for parking sensors (PTS), headlamp cleaning systems (SRA), side marker lights (SML), and trailer hitches (AHK)

Interior applications such as window cranks, entry indicators, and navigation modules

Ultrasonic punching and welding of bumper covers

Mesh

Films

Nonwovens

Textiles, etc.