| 摘要 |
PURPOSE: A non-contact type coil tension control apparatus is provided to achieve improved quality by continuously supplying air to maintain tension of coil constant and tightly winding coils at the bobbin. CONSTITUTION: A non-contact type coil tension control apparatus, comprises a main body(20) having a first through hole(22) with a female screw portion(22a), a second through hole(24) connected from the first through hole, and one or more communication holes(28) formed at a wall(26) of the main body in such a manner that communication holes are communicated to the first through hole; a tension maintaining member(30) which is penetrated through the female screw portion formed at the first through hole of the main body and fitted into the second through hole, wherein the tension maintaining member has sealing rings(34) arranged in front and rear of the tension maintaining member, a third through hole(32) connected from the second through hole, and a plurality of communication holes(36) formed at a wall(35) of the tension maintaining member in such a manner that communication holes of the tension maintaining member are communicated to communication holes of the main body; a fixing member(40) having a male screw portion(42a) coupled with the female screw portion formed at the first through hole of the main body so as to fix the rear portion of the tension maintaining member, wherein the fixing member has a fourth through hole(42) communicated to the third through hole; and an air supply unit(50) for supplying constant amount of air to communication holes formed at the tension maintaining member and maintaining tension of the coil constant by permitting air to flow in the direction opposite to the coil advancing direction being fed through second to fourth through holes.
|
