A system managing a polishing state of tips of a welding gun of each welding robot installed in a production line of a vehicle includes: a robot controller storing tip polishing data including the number of polishing of the tips and a polishing amount of the tips generated after each tip dressing of the welding gun; and a server collecting the tip polishing data from the robot controller to store the collected data according to robot identification information of the robot and learning the store data through artificial neural network to generate reference data determining the polishing state of the tips corresponding to the robot identification information. The robot controller sets artificial neural network of the robot based on the reference data and determines whether a polishing state of the tips according to the number of polishing and the polishing amount of the tips is normal.

A polishing device for a welding tip includes a cylindrical holder; and a polishing unit. The polishing unit includes a blade configured to polish a welding tip. The blade polishes the welding tip due to rotation of the polishing unit. The holder includes a groove extending along an entire inner circumference of the holder. The groove includes axial groove portions each of which extends along an axis of the holder, and inclined groove portions each of which extends for a specified first distance and is inclined in one direction with respect to the axial groove portions. The axial groove portions and the inclined groove portions are alternately arranged. The polishing unit includes projected portions each of which extends to an inside of the groove, and the number of the projected portions is two or more and is equal to or less than the number of the axial groove portions.

Provided is a tip dresser which is highly capable of collecting chips. A chip collection unit 8 is provided under a body case 2, the chip collection unit 8 configured to collect chips M1 produced in a cutaway part 4a of a rotary holder 4 during a cutting operation and falling downwardly through a lower communication hole 20b of the body case 2. The chip collection unit 8 includes a chip guiding member 81 provided on one lateral side of a chip falling area R1 that is located downwardly of the lower communication hole 20b, and a first air discharge unit 82 provided on another lateral side of the chip falling area R1. The chip guiding member 81 includes at one end thereof a chip collection port 81b located corresponding to the chip falling area R1, and is connected at another end thereof to a chip collector 83 capable of collecting the chips M1. The first air discharge unit 82 includes an air nozzle 82a configured to discharge compressed air towards the chip collection port 81b.

A swing arm assembly is provided for a spot welding machine. The swing arm assembly can accommodate a tip dresser or a tip exchanger and can include a lift assembly that can translate the tip dresser from a first position to a second position along a lateral axis.

Rivet dispenser reloading systems and methods of use thereof are provided. A non-limiting embodiment of a rivet dispenser reloading system comprises a receiving member defining a channel therein, and a first gate. The rivet receiving member comprises a first port and a second port that communicate with the channel. The first port is configured to receive rivets. The second port is configured to selectively engage with a rivet dispenser and introduce rivets to the rivet dispenser. The channel extends between the first port and the second port and is configured to transport rivets from the first port to the second port in a series arrangement and in a preselected orientation. The first gate is in communication with the second port and is selectively positionable between a first configuration inhibiting movement of rivets through the second port, and a second configuration enabling movement of rivets through the second port.

Provided are a projection welding device and an electrode cleaning method for the same with which it is possible to keep a stud holding hole formed in a welding electrode clean. A projection welding device welds a stud to a workpiece by holding the stud using a second electrode, bringing the stud into contact with the workpiece, and causing a welding current to flow through the second electrode, wherein the second electrode includes a stud holding hole which extends from a cap opening formed in the distal end, to a bottom portion formed on the base end side, and at least one lateral hole which extends from a side wall opening formed in a side wall to the bottom portion, and the projection welding device is provided with a stud supply device which ejects air into the stud holding hole from the cap opening of the second electrode.

A replacing and holding device includes an electrode tip puller including two stacked pick plates inserted between an end face of an electrode tip fitted into a shank fixed to a gun arm of a welding gun and an end face of a larger diameter portion of the shank, a guide rod that guides motions of the pick plates in a stacked direction thereof, a pick plate interspace increasing mechanism that increases a space between the pick plates according to positions of the pick plates along the guide rod, an electrode tip holder in one of the pick plates to hold the electrode tip pulled out from the shank, and an electrode tip contact portion in front of the shank in an insert direction of the shank, wherein the electrode tip comes into contact by a motion of the welding gun to insert the shank into the electrode tip.

A welding apparatus includes a welding rod; a temperature measuring jig to measure a temperature of the welding rod; and a welding rod cooler to cool the welding rod.

A swing arm assembly includes a tip dresser, a flange, and a swing arm. The flange is coupled with the tip dresser. The swing arm includes a mounting base and an arm assembly. The arm assembly includes an arm, an extendible arm mount, and a head. The arm is coupled with the mounting base. The extendible arm mount is disposed within the arm and is slidable with respect to the arm along a first axis between a retracted position and an extended position. The head is mounted to the extendible arm mount and includes a support plate and an actuator. The actuator is coupled with the support plate. The tip dresser is coupled with the support plate. The actuator is operably coupled with the flange to facilitate selective sliding of the tip dresser with respect to the support plate.

The air blow nozzle includes a nozzle body configured to be connected to an air compressor one end thereof and includes an air discharge portion another end thereof, the air discharge portion is capable of discharging compressed air supplied from the air compressor. The air discharge portion is configured to be movable to a position that does not correspond to an upper communication hole as the nozzle body is slid to one side. The nozzle body includes a nut configured to position the air discharge portion in a predetermined position near a rotary holder as the nozzle body is slid to another side.