| 主权项 |
1. A method for producing an automotive plug ignition coil core system, comprising the steps of:
providing a first electrical steel strip having a grain direction running lengthwise of the strip; stamping from the electrical steel strip a plurality of segmented lamination strips each having first, second, third, and fourth segments, and a hinge web provided at an outer edge between the first and second, second and third, and third and fourth segments, and a first interlock member provided at one end of the fourth segment and a second interlock member which is mateable with the first interlock member provided at one end of the first segment; after the segmented lamination strips have been stamped stacking them and folding them around in a close looped shape to form a first core where the first interlock member mates with the second interlock member for each of the respective lamination strips so that a closed loop first core is formed having a grain direction of the electrical steel running lengthwise in each of the first, second, third, and fourth segments; and also providing a second electrical steel strip and stamping from the second electrical steel strip a plurality of laminations, and stacking those laminations to form a second core which is adapted for placement inside of the closed loop first core, and wherein each lamination of the second core has a grain direction of the electrical steel running lengthwise in each lamination. |
