Mould for pressing semi-sphere grain

Abstract

The invention discloses a mould for pressing a semi-sphere grain, and the mould is used for solving the problem that the semi-sphere grain can not be pressed in the prior art. The mould consists of a withdrawing module (1), a gasket (2), a guide sleeve (3), a punch (4) and a base (5), wherein the gasket (2) is placed on the working surface at one end, provided with an ejector rod, of the withdrawing module (1), and the base (5) is sleeved on the ejector rod of the withdrawing module (1), so as to constitute a complete semi-sphere inner cavity; one end, larger in inner diameter, of the guide sleeve (3) is sleeved on the base (5), and one end, smaller in inner diameter, of the guide sleeve (3) is matched with the punch (4); and the distance between the upper and lower end surfaces of the punch (4) is equal to that from the end surface of one end, smaller in inner diameter, of the guide sleeve (3) to the inner diameter variation part of the guide sleeve (3). The mould disclosed by the invention is used for pressing explosive, and the pressed semi-sphere grain is intact in shape without lathe work. The mould disclosed by the invention is suitable for military explosive and is also applicable to civil explosive or industrial explosive which has requirement in sphere.

Description

technical field [0001] The invention relates to a mold for pressing a drug column, in particular to a pressing mold for pressing a semicircular spherical drug column, which is suitable for the preparation of explosives. Background technique [0002] At present, at home and abroad, most of the explosive molding powder is pressed into a cylindrical grain with a simple structure. For the special-shaped grain other than the cylindrical grain, it is usually pressed into a cylindrical shape and then turned into shape, which limits the shape of the pressed mold. Wide application of powder column. With the development of research on detonation performance testing of explosives, it is found that when cylindrical powder is used for detonation performance testing, the consistency of the detonation pressure wave to the surface of the cylinder cannot be achieved, so it has a great impact on the test with high precision , especially the near-field test results of the small detonation tes...

AI Technical Summary

Problems solved by technology

In order to remove the grain from the spacer, the spacer is machined into two halves along the midline, and a groove is machined at the bottom of the spacer, so that the spacer can be broken manually after the grain is pressed, but the medicine After the column is pressed and formed, it cannot be used directly, and subsequent turning processing is still required to remove the redundant powder column connected to the hemispherical shape

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