| 摘要 |
A lifting module which can vary a distance between a stud and base metals, allows a moving trajectory of the gun body to be coaxially present while lifting and lowering a gun body of a stud welding gun, can secure certain fixing strength when fixing the gun body, and can maximize a lifting and lowering distance of the gun body is provided. A lifting module for a stud welding gun comprises: a case(10) which is formed in a hollow cylinder shape, and has an inward flange(11) formed in a hollow part thereof; a disc-shaped first cap(20) in which a through hole(21) is axially formed, and which is fixed to one end of the case; a disc-shaped second cap(30) in which a through hole(31) is axially formed, and which is fixed to the other end of the case; a clutch ring(40) which is disposed in a ring shape such that the clutch ring is in communication with the through hole of the second cap, which is fixed onto an outer surface of the second cap, and in which a plurality of holes are formed in a radius direction; clutch pins(51,52) which are slidingly inserted into the clutch ring, the second cap and the first cap, wherein ends of the clutch pins inserted into the clutch ring are formed in a tapered shape; a plurality of clutch balls(60) inserted into the plurality of holes of the clutch ring and moved in a radius direction by taper portions(53) of the clutch pins; a clutch flange(70) which has a magnetic substance(71), and which is fixed to the clutch pins and disposed between the inward flange of the case and the second cap; a fixing stopper(90) which is connected to an outer side of the first cap, and closes the through hole of the first cap; elastic members(80,100) for elastically supporting the fixing stopper such that the fixing stopper is spaced apart from the ends of the clutch pins; and a solenoid(110) disposed between the second cap and the inward flange.
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