Mold for extrusion formation of equal-thickness in-plane bent plate

Abstract

The utility model relates to a mold for extrusion formation of an equal-thickness in-plane bent plate. The mold is connected and mounted with an extruder, and comprises an extrusion barrel liner, an adjustment mold and a forming mold which are connected in sequence, wherein an inner cavity arranged in a running-through manner along the extrusion direction of an extrusion rod is arranged in the mold; the inner cavity comprises a rectangular cavity located in the extrusion barrel liner and used for enabling the extrusion rod to push a blank, a forming hole located in the forming mold and used for extruding the blank, pushed by the extrusion rod from the inner cavity of the mold, into a flat plate, and a specially-shaped cavity located in the adjustment mold and used for cooperating the extrusion action of the extrusion rod to change and adjust the shape of the blank to enable the blank extruded out from the forming hole to become the required equal-thickness in-plane bent plate. The moldcan extrude equal-thickness in-plane bent plates with different curvatures; furthermore, the thickness size of the in-plane bent plate can be guaranteed; no phenomena of thinning of an outer ring, easy wrinkling of an inner ring and the like occur; in addition, the equal-thickness in-plane bent plate has no counter-acting force opposite to a bending direction of the equal-thickness in-plane bentplate, so that springback opposite to the bending direction cannot occur.

Description

technical field [0001] The invention relates to the field of manufacturing and forming of inner curved plates of equal thickness, in particular to a mold for extrusion molding of inner curved plates of equal thickness. Background technique [0002] The equal-thickness curved plate refers to the equal-thickness flat plate with a certain curvature radius and curved shape in the plane. It is a structural material that can be used for conveyors and aero-engine blades. It is used in powder processing, aviation and aerospace technologies. The field has broad application prospects. In the prior art, the earliest method of processing in-plane curved plates of equal thickness is to cut the large flat plate according to the arc profile of the in-plane curved plate, and then process and trim the cut arc-shaped plate in terms of thickness. This method will Cause a large amount of waste of plate raw material, basically no longer used. At present, the most common method of producing in-...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the thinning of the outer ring and the easy wrinkling of the inner ring of the equal-thickness in-plane bending plate produced in the production of the existing in-plane bending plate, it is necessary to carry out secondary processing and trimming of the thickness dimension, and it is easy to produce deformation in the bending direction. Springback in the opposite direction shortens the service life of the in-plane curved plate. The present invention provides a mold for extrusion molding of the in-plane curved plate of equal thickness

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