| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize the uniform adjustment of a large opening range in a short period of time and the settlement of the uneven thickness of a product by a method wherein the opening of a die is adjusted by moving a block tapered in the which direction of the die to the width direction of the die. SOLUTION: The die lip opening is formed by the die lips 3 and 4 of die main bodies 1 and 2. In the die lip 4, a groove, the bottom part of which is broader than its opening part, is formed to the width direction of a die. At the same time, in a die side plate opposing to the die lip 4, a groove, the bottom part of which is broader than its opening, is formed to the width direction of the die. The shapes of these grooves may well be equal to the shapes engaging with the shapes of both the end parts of a tapered block 7. In addition, the gap of the groove is made to become gradually narrower from one end to the other end of the die. Concretely, the same taper as that of the tapered block 7 is formed in the groove. The order of the taper is determined through the adjustment of the amount of movement of the block 7 and the degree of the change of the opening of the die.</p> |
