Abstract: A bolt feeder is for supplying a bolt to a resistance welding machine that performs resistance-welding of a workpiece and the bolt using a lower electrode. The bolt feeder comprises a holding unit configured to receive the bolt fed by a bolt feeding unit with a head located above a shaft, a moving unit configured to move the holding unit, and a pusher member configured to protrude from and retract into a tip end of the upper electrode. The bolt includes a projection on a top surface of the head which is opposite to a surface provided with the shaft. The lower electrode includes an insertion hole into which the shaft is inserted. The shaft is inserted into the insertion hole by the pusher member protruding from the tip end of the upper electrode and pushes an area of the top surface where the projection is absent.

Abstract: A component supply device is configured to feed a component having a through hole to a target position. The component supply includes: a rod including at its distal end a holding portion to be inserted into the through hole; an actuator; a valve mounted on the rod; and a fixing portion by which the valve that advances with the rod passes. The rod includes a gas outlet located in an outer periphery of the holding portion and configured to blow gas rearward, and a gas passage extending inside the rod and configured to send gas supplied from a gas source to the gas outlet. The valve includes a push switch configured to be switched between an advanced attitude and a withdrawn attitude, and a biasing unit configured to bias the push switch to the withdrawn attitude. The fixing portion includes a pressing wall portion facing the push switch.

Abstract: A component supply device is configured to feed a component having a through hole to a target position. The component supply includes: a rod including at its distal end a holding portion to be inserted into the through hole; an actuator; a valve mounted on the rod; and a fixing portion by which the valve that advances with the rod passes. The rod includes a gas outlet located in an outer periphery of the holding portion and configured to blow gas rearward, and a gas passage extending inside the rod and configured to send gas supplied from a gas source to the gas outlet. The valve includes a push switch configured to be switched between an advanced attitude and a withdrawn attitude, and a biasing unit configured to bias the push switch to the withdrawn attitude. The fixing portion includes a pressing wall portion facing the push switch.

Abstract: Parts merge smoothly without any stopper at a branching region. A determining and sorting unit determines, between an introduction passage and a branching region, whether weld nuts at rest are facing up or down. The weld nuts determined as facing up are fed to a first branch passage, whereas the weld nuts determined as facing down are fed to a second branch passage.

Abstract: Parts merge smoothly without any stopper at a branching region. A determining and sorting unit determines, between an introduction passage and a branching region, whether weld nuts at rest are facing up or down. The weld nuts determined as facing up are fed to a first branch passage, whereas the weld nuts determined as facing down are fed to a second branch passage.

Abstract: A small-diameter front-end portion of a feed rod is allowed to enter into the screw hole of a nut delivered by a nut chute, and the nut is fed to an intended position by the forward movement of the feed rod. When an abnormal nut having a screw hole into which the small-diameter front-end portion cannot be inserted is delivered, the abnormal nut is prevented from being flicked by the feed rod. In order to achieve this, in a standby state, the small-diameter front-end portion of the feed rod enters a nut receiving chamber and is then stopped. On condition that the abnormal nut is received in the nut receiving chamber, if the feed rod moves forward to enter into the standby state, the abnormal nut is slightly pushed out forward from the nut receiving chamber.

Abstract: The forward movement of a feed rod 15 of a nut feeder permits pressurization of air in an air chamber 3a defined in a rod holder 3, thereby blowing the air out of the air outlet 20 through an air inlet 21 and an air passage 22. A nut 7 is held on the feed rod 15 by the pressure of the air blow from the air outlet 20.

Abstract: A small-diameter front-end portion of a feed rod is allowed to enter into the screw hole of a nut delivered by a nut chute, and the nut is fed to an intended position by the forward movement of the feed rod. When an abnormal nut having a screw hole into which the small-diameter front-end portion cannot be inserted is delivered, the abnormal nut is prevented from being flicked by the feed rod. In order to achieve this, in a standby state, the small-diameter front-end portion of the feed rod enters a nut receiving chamber and is then stopped. On condition that the abnormal nut is received in the nut receiving chamber, if the feed rod moves forward to enter into the standby state, the abnormal nut is slightly pushed out forward from the nut receiving chamber.

Abstract: A parts aligner is provided with an attraction means 8 orbitally movable in a specific orbit R, and also provided with a posture shift guide 11, a regulating piece 12 and a thickness sorting guide 13 along a specific circumference P corresponding to the specific orbit R in the order of the direction of orbital movement of the attraction means 8. With this structure, only regular parts shifted into a specific posture are guided to an alignment and feed guide 14 and irregular parts are stored in an irregular parts storing part 16.

Abstract: A parts aligner is provided with an attraction means 8 orbitally movable in a specific orbit R, and also provided with a posture shift guide 11, a regulating piece 12 and a thickness sorting guide 13 along a specific circumference P corresponding to the specific orbit R in the order of the direction of orbital movement of the attraction means 8. With this structure, only regular parts shifted into a specific posture are guided to an alignment and feed guide 14 and irregular parts are stored in an irregular parts storing part 16.

Abstract: The forward movement of a feed rod 15 of a nut feeder permits pressurization of air in an air chamber 3a defined in a rod holder 3, thereby blowing the air out of the air outlet 20 through an air inlet 21 and an air passage 22. A nut 7 is held on the feed rod 15 by the pressure of the air blow from the air outlet 20.

Abstract: The present invention discloses a nut feeder for the feeding of nuts for resistance welding. A stopper 12 is provided which is so energized as to enter into the inside of a chute 7 from a lower-end lateral side of the chute 7. A lowermost nut 5 in the chute 7 is held by the stopper 12, thereby being prevented from falling. With a pin 11 of the nut receiver 9 set against a projection part 29 of the stopper 12, a nut receiver 9 is moved backward together with the stopper 12, by which the holding of the nut 5 is released. Then the nut 5 is placed at a position ahead of the pin 11 of the nut receiver 9 while leaning against the stopper 12. Thereafter the nut receiver 9 is moved forward and the nut 5 falls down so that its threaded hole fits onto the pin 11 and is delivered to under the upper electrode.

Abstract: The sorting and alignment of welding nuts are conducted with stability regardless of a variation in number with lower noise. A charging chute is provided on its end of obliquely downward slope with a nut-sorting part, and a face plate facing obliquely upward is disposed in a tilted position so as to define the nut-storing part. The face plate is formed with stainless steel of non-magnetic material. A permanent magnet is provided on the back of the face plate so as to move on a specific rotational locus, and moved in rotation by a motor. A posture shift guide is disposed on the front face of the face plate and a specific circumference corresponding to the specific locus to shift welding nuts attracted by the permanent magnet into their lying postures.

Abstract: A guide pin of a movable electrode is inserted into a hole of a nut fed to an intermediate position between a fixed electrode and the movable electrode, and the movable electrode is then moved down together with the nut to position the nut on a portion to be welded of a workpiece overlying the fixed electrode. An air passage is formed inside of the guide pin. A plurality of air outlets are formed on the periphery of the tip of the guide pin. A pressurized air is supplied to the air passage and is then blown out of the air outlets, so that a blow of the pressurized air is given to the bottom surface of the nut thereby preventing fallout of the nut.