Plate locking device and pressing die

Abstract

The invention discloses a plate locking device and a pressing die. The locking device comprises a mounting base, a material locking block and a power device, wherein a first cantilever and a second cantilever are formed on the same side of the mounting base; the material locking block is provided with a material locking part formed at the front end, a connecting part formed at the rear end and a pivot part formed in the middle, and the pivot part is pivoted to a first pivot through the first cantilever; and one end of the power device is matched with the connecting part, the other end of the power device is matched with the second cantilever, and the power device drives the material locking block to rotate along the first pivot. The pressing die comprises an upper die body and a lower die body. A bland holder is formed on the lower die body. The material locking device and the lower die body are fixedly arranged. The material locking block is located above the blank holder. The power device of the locking device drives the material locking block to rotate, the limiting function to a plate can be achieved, and leaping of the plate is reduced or avoided; and by adoption of the pressing die, the plate is further fastened, and leaping of the plate is avoided.

Description

technical field [0001] The invention relates to the technical field of mold forming, in particular to a plate locking device and a pressing mold. Background technique [0002] At present, the outer panel of the trunk of the sedan car is approximately "V" shaped along the section line of the symmetrical middle surface. The middle of the surface is much higher than the left and right sides, and it becomes very difficult for the sheet to be positioned stably on the surface. [0003] The current solution is to set two positioning plates with the function of supporting materials at the lower positions on the left and right sides of the blank holder, so that after the sheet material is put into the blank holder, it will first maintain a flat state. The mold descends and the blank holder is closed, and the upper mold drives the blank to gradually bend into a "several" shape. [0004] This measure has effectively improved the positioning stability of the blank relative to the blan...

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Problems solved by technology

[0004] This measure has effectively improved the positioning stability of the blank relative to the blankholder during the closing process of the upper die and the blankholder, but the scrap rate of parts in the drawing process caused by the shifting of the blank position is still high, which can only be controlled At 10% to 15%, the goal of zero scrap rate cannot be achieved

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