Rotatable Adhesive Dispenser Head for High-Speed Die Bonding

The patent transforms the traditional two-dimensional orthogonal movement system into a three-dimensional system by adding a rotational degree of freedom. The dispenser head can now rotate about a vertical axis in addition to moving along horizontal axes, allowing the system to reach dispensing positions from multiple directional approaches. This dimensional addition enables the use of smaller, lighter drive components since the rotational mechanism requires less force to reposition the head compared to accelerating large masses in orthogonal directions.

By introducing rotational movement as an additional dimension, the system can achieve positioning without requiring powerful linear drives. The rotational axis allows the dispenser head to be repositioned by rotating rather than by accelerating large masses linearly, significantly reducing the power requirements of the drive system while maintaining positioning accuracy.

The rotational degree of freedom provides an alternative motion path that requires smaller forces to achieve the same repositioning effect. This allows the use of lighter bearings that can support the reduced loads while still enabling high acceleration rates, as the rotational mechanism inherently requires less force to change the position of the dispenser head.

The patent makes the dispenser head dynamically reconfigurable by adding rotational capability. Instead of using multiple static heads, a single head can dynamically reposition itself by rotating to access different dispensing locations. This dynamic approach achieves increased throughput equivalent to multiple heads while maintaining the simplicity of a single-head system architecture.