Lead-free combined firework concentrated in emission and filled with gunpowder

Abstract

The invention relates to a lead-free combined firework concentrated in emission and filled with gunpowder. The bottom of each tubular body is provided with an explosive groove used for improving the concentration strength of gunpowder emission; the bottom face of each gunpowder groove is provided with a fire leading hole which is a through hole; the bottom face of a firework body is provided with a fire leading groove; the fire leading holes are communicated with the fire leading groove in the bottom face of the firework body; and the fire leading holes and the fire leading groove are filled with slip casting gunpowder. The lead-free combined firework concentrated in emission and filled with the gunpowder solves the problem that a lead, a glue lead, a cutting lead and an inserting lead need to be made for a combined firework, the work procedures are reduced, cost is reduced, safety is improved, and the problems that in the firework set-off process, rolling movement happens, the emission force is not concentrated, and direction is not stable are also solved.

Description

Technical field [0001] The invention relates to the technical field of fireworks, in particular to a leadless combined firework with concentrated launching and filled with medicine. Background technique [0002] Existing combined fireworks are generally made of paper rolls, slurry compression molding, or plastic injection molding. The molded combined fireworks are generally prisms, cylinders, etc. A number of tubular cavities are evenly distributed on the body of the combined firework, the upper port of the tubular cavity is open, the lower port is closed, and the inner tube of the firework and gunpowder are built in the tubular cavity. The closed end of the tubular cavity is provided with a pilot hole penetrating the bottom surface of the body. The bottom surface is provided with a fuse connecting the bottom opening of the pilot hole. The fuse wire is connected with the lead in each pilot hole, and the lead in the pilot hole is used to ignite the built-in tubular cavity. Fire g...

AI Technical Summary

Problems solved by technology

[0003] This combination of fireworks has the following disadvantages: (1) the propellant powder in the tubular cavity is not concentrated, the propellant is relatively scattered, and the distribution is uneven at the bottom of the tubular cavity, the consumption of propellant powder is large, and the cost is high. The action area is large, and the force to push the inner cylinder of fireworks upwards is small, which affects the launching height of the inner cylinder of fireworks and the effect parts inside the inner cylinder; (2) The inner cylinder of fireworks built in the tubular cavity will roll over during launch, The launch trajectory is easy to deviate from the predetermined route, and trajectory deviation often occurs during the launch process, which affects the effect of fireworks display, seriously affects the directionality and safety of fireworks display, and is likely to cause personal injury and fire; (3) the existing combined fireworks are all It is necessary to manually arrange the fuse wire in the groove on the bottom surface of the body and insert the lead wire into each ignition hole. The production speed is slow, the efficiency is low, a large amount of manpower is required, and the labor intensity is high.

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