| 摘要 |
This specification discloses strip sheet metal panels formed with transverse indentations and longitudinal formations formed therein, with end portions at each end of said panels being free of said transverse indentations; AND A METHOD OF COLD ROLLING STRIP SHEET METAL TO FORM BOTH TRANSVERSE AND LONGITUDINAL INDENTATIONS AND FORMATIONS THEREIN, AND DISCONTINUING FORMATION OF SAID TRANSVERSE INDENTATIONS AT PREDETERMINED SPACED INTERVALS ALONG SUCH SHEET METAL, AND SHEARING THE SHEET METAL IN MEASURED RELATION TO SUCH SPACED INTERVALS; AND FURTHER DICLOSES APPARATUS FOR EMBOSSING SHEET METAL, IN A SHEET METAL FORMING LINE ADAPTED TO FORM BOTH TRANSVERSE AND LONGITUDINAL INDENTATIONS IN SAID SHEET METAL, AND IN WHICH SAID FORMING LINE INCLUDES SHEET METAL DELIVERY MEANS, AND A PLURALITY OF SHEET METAL ROLLER STANDS FOR FORMING SAID LONGITUDINAL INDENTATIONS AND IN WHICH SAID EMBOSSING APPARATUS INCORPORATES TENSION ROLL MEANS LOCATED AND ADAPTED TO RECEIVE SAID SHEET METAL FROM SAID SHEET METAL DELIVERY MEANS, EMBOSSING ROLL MEANS LOCATED TO RECEIVE SAID STRIP FROM SAID TENSION ROLL MEANS AND MOVING DIE MEANS COOPERATING WITH SAID EMBOSSING ROLL MEANS THEREBY TO DRAW SAID SHEET METAL INTO FORMATIONS ON SAID EMBOSSING ROLL MEANS AND THEREBY FORM SAID TRANSVERSE INDENTATIONS IN AN INTERMEDIATE CENTRAL REGION THEREOF, AND, HOLDING ROLL MEANS ADAPTED TO ENGAGE SAID EMBOSSED INDENTATIONS AND HOLD SAID SHEET METAL IN SAID FORMATIONS, SAID SHEET METAL THEREAFTER PASSING THROUGH SAID ROLLER STANDS FOR FORMATION OF SAID LONGITUDINAL INDENTATIONS IN MARGINAL AREAS OF SAID STRIP UNAFFECTED BY SAID EMBOSSING ROLL MEANS AND MEANS FOR INTERMITTENTLY DISENGAGING SAID MOVING DIE MEANS FROM SAID EMBOSSING ROLL MEANS TO PERMIT PORTIONS OF SAID SHEET METAL TO PASS THEREAROUND WITHOUT FORMATION OF SAID INDENTATIONS.
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