CN203240961U

CN203240961U - Combined firework bomb seat with bottom end of each cartridge shaped like reverse circular truncated cone

Info

Publication number: CN203240961U
Application number: CN2013201348446U
Authority: CN
Inventors: 陈卓霖
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-07
Filing date: 2013-03-07
Publication date: 2013-10-16
Anticipated expiration: 2023-03-07

Abstract

The utility model provides a combined firework bomb seat with the bottom end of each cartridge shaped like a reverse circular truncated cone. A plurality of firework cartridges with bomb holes inside are arranged on the firework bomb seat, the upper half end of each firework cartridge and the upper half end of each bomb hole are respectively shaped like a round barrel, the bottom end of each firework cartridge and the bottom end of each bomb hole are respectively shaped like a reverse circular truncated cone, and a line guiding hole is formed in the center of the lower bottom surface of each firework cartridge. When the combined firework bomb seat is used for manufacturing combined fireworks, the reverse circular truncated cone shape at the bottom end of each bomb hole enables the position of a gunpowder separation plate to be fixed and the gunpowder separation plate not to slide downwards, and prevents from applying pressure on lower propellant in the process of packing of a firework inner barrel, enables the volumes of the propellant in all the firework cartridges to be the same, and guarantees the explosive force generated by the propellant to be consistent. Meanwhile, the upward impulsion generated when the propellant packed into each firework cartridge with the bottom end shaped like the reverse circular truncated cone explodes is larger than that generated when the same amount of the propellant packed into each round-barrel-shaped bomb hole explodes, so that the use amount of the propellant is reduced. Each firing line penetrates out of the line guiding hole in the bottom surface of each firework cartridge, the guiding process is simple, the consumption of materials of the firing lines is low, and cross ignition does not occur easily among the firing lines.

Description

The cylinder bottom is the combined firework bullet seat of reverse frustoconic

Technical field

The utility model relates to the combined firework bullet seat that a kind of cylinder bottom is reverse frustoconic.

Background technology

In people's lives and social activities, especially in red-letter day or the celebration activity, setting off of fireworks is very many, and in the quilt fireworks of setting off, combined firework is mainly to set off kind.Combined firework claims again potted flower, traditional combined firework is to have the single fireworks tube of firework powder material to arrange to be fixed together side by side by one by one coil paper moulding, inner filling to consist of, and the fuse of its each fireworks tube is cascaded after the sidepiece fairlead of fireworks tube is drawn; In recent years progressively adopt a kind of one-time formed combined firework bullet seat to make combined firework, this by having the cylindrical shape fireworks cylinder that a series of arrays are arranged on die mould of press or the injection molded base for fireworks bomb, in the fireworks cylinder behind the filling firework powder material, fuse is namely made a combined firework from the top of each cylinder or from being cascaded after the sidepiece fairlead of each cylinder is drawn.Adopt the combined firework of this one-shot forming combined firework bullet seat, solved the problem that there is the technology deviation in each fireworks tube of traditional combined firework, can avoid the generation of fried cylinder, simplified the combined firework manufacture craft, greatly reduced material and dropped into and production cost, be widely used at the fireworks production field.But this base for fireworks bomb is the Shortcomings part still: the fireworks cylinder is that cylindrical shape can not make propellant generation emission maximum render a service, and when making combined firework, because of filling in each fireworks cylinder different to the propellant applied pressure below it during fireworks inner tank, can make the propellant volume in each fireworks cylinder inconsistent, the explosive force that propellant produces when setting off is inconsistent, affects overall firework display effect; Its fuse tandem process is complicated and expend the fuse material, and each fuse skewered easily occurs in ignition Process, destroys firework display effect.

Summary of the invention

The technical problems to be solved in the utility model is that it is the combined firework bullet seat of reverse frustoconic that a kind of cylinder bottom is provided, and solves the deficiency that existing combined firework bullet seat exists.

Solution of the present utility model is, designing a kind of cylinder bottom is the combined firework bullet seat of reverse frustoconic, be array on this base for fireworks bomb and be arranged with the fireworks cylinder that a plurality of inside are shell hole, its technical characterstic is, the middle upper end of fireworks cylinder and shell hole is cylindrical shape but the bottom is reverse frustoconic, and the bottom surface center of fireworks cylinder has a fairlead.

When a kind of cylinder of the utility model bottom is the combined firework bullet seat making combined firework of reverse frustoconic, the firework launching gunpowder is loaded on the reverse frustoconic place, bottom of each shell hole, the gunpowder dividing plate is covered in shell hole reverse frustoconic end face place, put fireworks inner tank on the gunpowder dividing plate, each fireworks cylinder fuse passes rear series connection from fairlead again.

The beneficial effects of the utility model are, the reverse frustoconic of shell hole bottom is so that the gunpowder partition position is fixing can not glide, can stop during the filling fireworks inner tank following propellant is exerted pressure, make the propellant volume in each fireworks cylinder identical, can guarantee that the explosive force of propellant generation is consistent; Simultaneously, it is that the upthrust that blast produces in the reverse frustoconic shell hole is also high than being loaded in the cylindrical shape shell hole that the propellant of equivalent is loaded on the bottom, can reduce the propellant consumption; Every fuse passes from fireworks cylinder bottom surface fairlead, draws that technique is simple, the fuse material expends fewly, and each fuse is difficult for the string fire.

Description of drawings

Fig. 1 is that a kind of cylinder of the utility model bottom is the structural representation of the combined firework bullet seat of reverse frustoconic;

Fig. 2 is the top view of utility model shown in Figure 1;

The fireworks cylinder used schematic diagram when Fig. 3 was utility model making combined firework shown in Figure 1.

Among the figure: 1-shell hole, 2-fireworks cylinder, 3-fairlead, 4-fireworks inner tank, 5-gunpowder dividing plate, 6-propellant, 7-fuse.

The specific embodiment

A kind of cylinder bottom of present embodiment is that the combined firework bullet seat of reverse frustoconic is shown in accompanying drawing 1-2, be array on this base for fireworks bomb and be arranged with the fireworks cylinder (2) that a plurality of inside are shell hole (1), the middle upper end of fireworks cylinder (2) and shell hole (1) is cylindrical shape but the bottom is reverse frustoconic, and the bottom surface center of fireworks cylinder (2) has a fairlead (3).When making combined firework, when fireworks cylinder (2) uses as shown in Figure 3, firework launching gunpowder (6) is loaded on the reverse frustoconic place, bottom of shell hole (1) in the fireworks cylinder (2), gunpowder dividing plate (5) is covered in the reverse frustoconic end face place, bottom of shell hole (1), put fireworks inner tank (4) on the gunpowder dividing plate (5), fuse (7) passes from fairlead (3) again.

A kind of cylinder of the utility model bottom that makes thus is that the combined firework bullet seat of reverse frustoconic is proved to be respond well through manufacturing experimently to try out, and has solved the deficiency that existing combined firework bullet seat exists.

Claims

1. combined firework bullet seat that the cylinder bottom is reverse frustoconic, be array on this base for fireworks bomb and be arranged with the fireworks cylinder (2) that a plurality of inside are shell hole (1), it is characterized in that, the middle upper end of fireworks cylinder (2) and shell hole (1) is cylindrical shape but the bottom is reverse frustoconic, and the bottom surface center of fireworks cylinder (2) has a fairlead (3).