Patent ID: 7896194
Filing Date: 2011-03-01
Classification: B23K,B23P

Abstract:
1. A nut feeder comprising: a nut delivery unit for delivering a nut; a nut receiver for receiving the nut delivered by the nut delivery unit; a feed rod which includes a small-diameter front-end portion insertable into the screw hole of the nut, whose forward movement allows the nut in the nut receiver to be fed to an intended position, and in which, in a standby state for feeding the nut to the intended position, the small-diameter front-end portion of the feed rod enters a nut receiving position in the nut receiver so as to be inserted into the screw hole of the nut received in the nut receiver and is then stopped; and a rod driver for moving the feed rod forward from the standby state to feed the nut to the intended position, subsequently moving the feed rod behind the nut receiving position in order to receive the next nut from the nut delivery unit in the nut receiver, and subsequently moving the feed rod forward again to enter into the standby state and then stopping the feed rod, wherein the feed rod is provided with an engagement portion for, when the small-diameter front-end portion of the feed rod pushes the nut in the nut receiver out forward without being inserted into the screw hole of the nut so that the feed rod enters into the standby state, engaging with the nut subsequent to the pushed-out nut to prevent the feed rod from further moving forward from the standby state.