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Mould device for removing trimming of power material forming at a time through mould pressing

A powder material and molding powder technology is applied in the field of mold devices for removing burrs from one-time molding powder materials. The effect of pressure, reducing the amount of material particles, and controlling the flash of the compact

Active Publication Date: 2015-07-01
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The formed flash will lead to poor dimensional consistency of the green compact, a decrease in the pass rate of the product, and an increase in production cost; in addition, the flash removal process will also form dust that will cause bodily harm to the operator

Method used

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  • Mould device for removing trimming of power material forming at a time through mould pressing
  • Mould device for removing trimming of power material forming at a time through mould pressing
  • Mould device for removing trimming of power material forming at a time through mould pressing

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Embodiment

[0027] Such as Figure 1-Figure 12 As shown, the mold device for removing the flash of the primary molding powder material includes a punch 1 , a die sleeve 2 , a base 3 and an ejection table 4 . The punch 1 has a ring of protrusions 5 facing the powder material 6 at the outer edge of the end surface in contact with the powder material 6 . The base 3 has a circle of protrusions 5 facing the powder material 6 at the outer edge of the end surface in contact with the powder material 6 . Preferably, the shape of the raised cross-section is a right-angled trapezoid or a right-angle plus transitional arc structure, and the right-angle plus transitional arc structure is composed of a set of parallel line segments, a straight line segment connecting the two ends of the set of parallel line segments, and a circular arc. In addition, the present invention also controls the gap between the punch 1 and the die sleeve 2 at 0-0.019mm, which can further achieve the effect of effectively rem...

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Abstract

The invention discloses a mould device for removing trimming of power materials forming at a time through mould pressing, and relates to the field of the power material forming at a time through mould pressing. The mould device for removing the trimming of the power materials forming at a time through the mould pressing comprises a punch, a mould sleeve, a base and a demoulding table. A circle of protrusions towards the power materials are formed in the outer edge of the contact end face of the punch and the power materials. A circle of protrusions towards the power materials are formed in the outer edge of the contact end face of the base and the power materials. According to the mould device for removing the trimming, the trimming structure can be controlled by the design, when the punch moves downwards, a component force towards the axis of the mould sleeve is conducted on the materials, edge material granules of the punch can be effectively controlled to move in the radial direction, and thereof the amount of the material granules heaped up in a clearance is reduced; by means of the structure, extrusion force conducted on the material granules in the clearance is favorable to reduced at the same time, and the purpose that the pressed shape trimming is effectively controlled is achieved.

Description

technical field [0001] The invention relates to the processing field of molding powder materials for one-time molding, in particular to a mold device for removing the flash of molding powder materials for one-time molding. Background technique [0002] Existing one-time molding powder materials, during molding, protruding burr structures (also known as flashes) with uneven heights will be generated around the green compact due to the structure of the mold itself. The formed flash will lead to poor dimensional consistency of the green compact, a decrease in the qualified rate of the product, and an increase in production cost; in addition, the flash removal process will also form dust that will cause bodily harm to the operator. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, design a mold device that effectively removes the flashing of the green compact, and solve the above problems i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B15/02
Inventor 吕珂臻陈良军韩超冯立羊徐程洪
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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