A loose nail driving device for wooden pallets, comprising a crossbeam, with its lower part allowing semi-finished pallets to pass through, multiple support slides arranged on the crossbeam, which can slide to achieve position adjustment in the transverse direction of the crossbeam. A nailing unit is arranged on the support slides, used for nailing operations at various foot block positions of the semi-finished pallets. The nailing unit includes a frame and a nail driving assembly arranged on the frame. The frame is connected to the support slides through a lifting cylinder. A rotatable large gear and a driving mechanism for driving the large gear are configured on the base frame of the frame. An eccentric hole is machined on the disk surface of the large gear, and the lower end of the nail head of the nail driving assembly is configured within the eccentric hole through a first bearing.

A loose nail driving device for wooden pallets, comprising a crossbeam, with its lower part allowing semi-finished pallets to pass through, multiple support slides arranged on the crossbeam, which can slide to achieve position adjustment in the transverse direction of the crossbeam. A nailing unit is arranged on the support slides, used for nailing operations at various foot block positions of the semi-finished pallets. The nailing unit includes a frame and a nail driving assembly arranged on the frame. The frame is connected to the support slides through a lifting cylinder. A rotatable large gear and a driving mechanism for driving the large gear are configured on the base frame of the frame. An eccentric hole is machined on the disk surface of the large gear, and the lower end of the nail head of the nail driving assembly is configured within the eccentric hole through a first bearing.

A nail gun for repeatedly driving nails into a substrate includes a drive assembly having a longitudinal axis, a feed head assembly attached to the drive assembly and configured to provide the nails to an output segment, a hammer configured to reciprocate along the longitudinal axis of the drive assembly to drive the nails into the substrate, and a reservoir assembly configured to provide compressed air to the drive assembly to reciprocate the hammer and drive the nail into the substrate. A method drives nails into a substrate with the nail gun.