Marking apparatus using magnetism

Abstract

Provided is an apparatus for marking a metal using magnetism. The apparatus includes an upper body having an elastic unit insertion groove in which an elastic unit is inserted, an operation body through which a cylindrical part having a diameter less than that of the elastic unit insertion groove vertically passes, the operation body being coupled to a lower portion of the upper body, wherein an electromagnetic coil is disposed around the cylindrical part, a lower body through which an induction part having a diameter less than that of the cylindrical part vertically passes, the lower body being coupled to a lower portion of the operation body, a control part connected to the electromagnetic coil to control an electromotive force of the electromagnetic coil, a plunger including a head part inserted into the elastic unit insertion groove, a stamping rod inserted into the cylindrical part, and a stamping pin inserted into the induction part, and an elastic unit coupled to the stamping rod and inserted into the elastic unit insertion groove to elastically support the plunger.

1 . An apparatus for marking a metal using magnetism, the apparatus comprising:
 an upper body having an elastic unit insertion groove in which an elastic unit is inserted;   an operation body through which a cylindrical part having a diameter less than that of the elastic unit insertion groove vertically passes, the operation body being coupled to a lower portion of the upper body, wherein an electromagnetic coil is disposed around the cylindrical part;   a lower body through which an induction part having a diameter less than that of the cylindrical part vertically passes, the lower body being coupled to a lower portion of the operation body;   a control part connected to the electromagnetic coil of the operation body to control an electromotive force of the electromagnetic coil;   a plunger comprising an upper head part inserted into the elastic unit insertion groove of the upper body, a middle stamping rod inserted into the cylindrical part of the operation body, and a lower stamping pin inserted into the induction part of the lower body; and   an elastic unit coupled to the stamping rod of the plunger and inserted into the elastic unit insertion groove of the upper body to elastically support the plunger.   
     
     
         2 . The apparatus of  claim 1 , wherein a tapered part having a gradually decreasing diameter is disposed on a lower end of the cylindrical part of the operation body, and a tapered part having a shape corresponding to that of the lower end of the cylindrical part comprising the tapered part is disposed on a lower end of the stamping rod of the plunger. 
     
     
         3 . The apparatus of  claim 2 , wherein an angle between the cylindrical part of the operation body and the tapered part of the stamping rod of the plunger is about 30°.