Bidirectional extrusion forming die

Abstract

The bidirectional extrusion forming die comprises an upper die body and a lower die body, and the upper die body is fixedly installed on the upper surface of the lower die body; a blank cavity is formed in the upper die, a conveying cavity and a material collecting cavity are formed in the lower die, an inner die hole is formed in the bottom of the lower die, a communicating cavity is formed in the upper surface of the lower die, and the blank cavity is communicated with the material collecting cavity through the communicating cavity and the conveying cavity. One end of the material collecting cavity is communicated with the inner die hole; according to the device, the blank cavity, the conveying cavity and the material collecting cavity are arranged in a communicating manner, and the spiral conveying column is arranged in the conveying cavity, so that blanks with different sizes and shapes can be put into the blank cavity together, and then the blanks in the blank cavity are extruded through the first extrusion rod; and the blanks can be driven by the spiral conveying column to enter the material collecting cavity to be stored before extrusion forming, so that the device is suitable for the blanks of different sizes and shapes, and the blanks of different sizes and shapes can be extruded at the same time.

Description

technical field [0001] The invention relates to the technical field of forming molds. Specifically, it is a bidirectional extrusion molding die. Background technique [0002] The extrusion molding method refers to the method of strongly extruding the plastic material to make it through the hole die. The bidirectional extrusion process refers to applying pressure to the material from two directions, so that a velocity gradient is generated inside the material to drive the overall bending of the material. Thereby a novel extrusion forming process for extruded products bent along the length direction is obtained. [0003] Chinese patent document CN111229852B discloses an extrusion die, device and method for realizing a bidirectional extrusion forming process, wherein the device includes a central beam of an extruder, a first extrusion cylinder, a second extrusion cylinder, a push-pull rod, and a bidirectional extrusion rod. The extrusion die of the compression forming process...

AI Technical Summary

Problems solved by technology

[0004] The billets used in the above documents are rods, but in actual production, there will be not only rod-shaped billets, but also billets of various shapes, and even redundant billet scraps. If the volume of the billet is too large It is too large to fit into the two extrusion cylinders, and the billet needs to be processed again, and the leftovers of the billet cannot be extruded due to the small volume, which will cause the waste of the billet and increase the production cost

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