The Linear Drive System (LDS) dispenser differs from all other types of pumps, in both design and functionality. Instead of pneumatics, or an auger, the LDS employs a linear actuator that controls the rotation of a lead screw and hence, the linear movement of the piston in the syringe. (See Figure 1.) It is a true positive displacement pump, in that each increment of mechanical actuation even during ramp up and ramp down results in a specific volume of solder paste being dispensed, despite the viscosity of the material.
展开▼
