| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an automatic punching device capable of conveying sheet material at high speed, positively conveying the whole sheet material out of a punching part, punching the sheet material in an excellent finished state as a product and shortening time over the whole punching work. SOLUTION: A scraper bar 34 is laid between the relative positions of two endless chains 31 of a sheet material transfer part 30, and a holding part is fitted to the rear side in the proceeding direction of the scraper bar 34 to pull and convey a sheet material 50 while holding it by the holding part of the scraper bar 34. Since scrap parts falling on a lower surface table 22 can be pushed out by another hollowing scraper bar 34 passing between upper and lower surface tables, the sheet material 50 can be stably conveyed to permit high speed conveyance, and since punching can be performed without providing an uncut part between the scrap parts and a product, the product part has an excellent finish.</p> |
