| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily bend an outer box of a refrigerator without damaging an original sheet by installing a jig in a direction orthogonal to the advancing direction of an iron sheet for the outer box, and working a groove without turning the iron sheet for the outer box. SOLUTION: A lower side of a first jig 20 is formed of a flat surface so that an iron sheet for an outer box is effectively pressed and fixed thereto, and lower ends of a second jig 30 and a fourth jig 50 to be integratedly elevated/lowered with the first jig 20 are installed higher than the first jig 20. Though the lower side of the second jig 30 and the upper side of a third jig 40 are inclined diagonally upward to the right, an upwardly recessed groove 33 is formed in a left end part of the second jig 30, a projection 43 which is upwardly projected is installed on the upper side of the third jig 40 opposite thereto, and the second jig 30 and the third jig 40 are pressed in a closely attached manner to each other on the right side of the first jig 20 to form a groove. The work balance can be secured in the whole process because the process is performed without expansion of the occupying equipment space and delay of time.</p> |
