Moulding die with movable drawing rib and solid particle medium radial thrust

Abstract

The invention relates to a moulding die with a movable drawing rib and solid particle medium radial thrust, which comprises an upper die, a convex die, a pressure plate, a drawing rib, a padding plate, an ejecting rod, a nitrogen cylinder, a lower die seat, a seal plate, a solid particle, a top plate, and the like, wherein the ejecting nitrogen cylinder is installed on the lower die seat; the working end of the ejecting nitrogen cylinder penetrates through the pressure plate, is in contact with the top plate arranged in the pressure plate and ejects the lower surface of the top plate; the seal plate is installed on the pressure plate; the seal plate, the upper die, the pressure plate, the top plate and a blank form a sealed space in the moulding process; and the solid particle is arranged in the sealed space. The invention provides a novel die for compounding the movable drawing rib and radial solid particle medium thrust increase. The die has convenient control of drawing rib resistance, safe and reliable loading of radial thrust, no pollution, easier moulding in practical production and obvious improvement of moulding quality of products.

Description

technical field [0001] The invention belongs to stamping die technology, and specifically relates to a forming die with movable drawbeads and solid particle medium radial thrust, which is mainly aimed at variable drawbead heights while providing radial thrust. technical background [0002] Ordinary forming dies have no radial thrust, and the forming is completed by the punch driving the sheet and pulling it toward the die. For drawing dies with radial hydraulic pressure, the radial thrust is realized by liquid pressure, and the sealing problem is difficult to solve; at the same time, the drawing dies with hydraulic devices have a more complicated structure and higher cost. [0003] In the current stamping die, the ribs of the drawbead are usually fixed on the binder plate or the die, and the resistance of the drawbead is fixed throughout the drawing forming process. However, for the drawing forming that requires the resistance of the drawbead to change along with the stampi...

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Problems solved by technology

[0004] The present invention aims at the problem that the existing mold cannot change the resistance of the variable drawbead and the conventional forming mold has no radial thrust and the sealing problem of the deep drawing mold with radial hydraulic pressure is difficult to solve, and provides a method with variable drawbead height and variable solid particle The amount of mold, so as to achieve variable drawbead resistance, provide radial thrust

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