Abstract: A surface mounter device including a carriage assembly having a pair of mounter heads mounted on opposite sides of the carriage assembly. Each mounter head is adapted to pick up components from a respective feeder station at a respective side conveyor that delivers substrates to the mounting area. A translational conveyor mechanism is provided for transversely moving the substrates relative to their path of movement by the conveyor so that components may be positioned on the substrate by one mounting head while the other mounting head is picking up components from its respective feeder station.

Abstract: Two embodiments of assembly devices particularly adapted for assembling components such as IC chips on a printed circuit board. The arrangement includes a pair of carriages each of which supports gripping means and the supporting and driving arrangements for the carriages permits a very compact assembly and prevents interference between the carriages during their movement. The carriage has an improved supporting arrangement that prevents binding and embodiments are shown wherein the gripping devices carried by the carriages may either pick up units from one or both sides of the device.