Split environmentally friendly plastic fireworks outer tube

Abstract

The invention discloses a split type environment-friendly plastic firework outer tube, comprising a tube body and a base, wherein the tube body and the base are detachably connected, the front of the base is processed with medicine storage grooves corresponding to the number of tube bodies, the bottom of the tube body is sleeved on the outside of the corresponding medicine storage grooves and the two are mutually fitted, the back of the base is processed with a lead groove, the lead groove passes through the area corresponding to all the medicine storage grooves and a through hole connecting the medicine storage grooves is opened on the lead groove, each adjacent two tube bodies in a plurality of tube bodies are spaced apart and a transverse connecting rib is processed between each adjacent two tube bodies; a plurality of ventilation and water holes are opened on the base, and the ventilation and water holes are located between the tube bodies. The invention has a moisture-proof function, which not only effectively improves the quality of the firework outer tube, but also improves the safety of its ignition.

Description

Technical Field

[0001] The invention relates to a split type environment-friendly plastic firework outer tube, belonging to the technical field of fireworks. Background Art

[0002] Most fireworks are composed of a single outer tube with powder or an outer tube with a bullet inside, which produces sound, light, color and suspension effects when ignited. The outer tube is mostly made of paper and sealed with a mud bottom. This paper outer tube is not only complicated to make, has high production costs and is easily affected by moisture, but also produces smoke and dust when it explodes, which is easy to cause the tube to explode and cannot be recycled and reused. In view of the shortcomings of the paper outer tube, people have developed a plastic firework outer tube obtained by injection molding. It has the advantages of low cost, good strength, not easy to be affected by moisture, reusable, high safety, and environmental protection, and has gradually replaced the paper firework outer tube.

[0003] CN2016209592324 discloses a plastic outer cylinder of a combined firework, which includes a plurality of cylinders and a base, wherein the base is composed of an outer reinforced sealing class and an inner fuse gunpowder placement office, and a number of gunpowder placement grooves corresponding to the cylinder are arranged on the front of the fuse gunpowder placement office, and a limiting groove of the cylinder is designed on the periphery of each gunpowder placement groove, and each cylinder is stuck in the limiting groove outside the corresponding gunpowder placement groove, and a lead placement groove is arranged on the back of the fuse gunpowder placement office, and a through hole connected to the lead placement groove is opened on the gunpowder placement groove. The plastic firework outer cylinder of this structure has high strength, is not easy to be affected by moisture, is not easy to deform, and can be recycled and reused. However, the cylinders of this structure are tightly fitted with each other and each cylinder exists independently. During the placement process, water droplets condensed due to moisture cannot be discharged, which affects the explosion effect of the fireworks, and after multiple uses, the cylinders are easy to explode; in addition, the fuse is directly exposed to the outside and is easy to fall off. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a split-type environmentally friendly plastic firework outer tube with a more reasonable structural design and moisture-proof function.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a split-type environmentally friendly plastic firework outer tube, including multiple cylinders made of plastic and a base made of plastic, wherein the cylinder and the base are detachably connected, the front of the base is processed with medicine storage grooves corresponding to the number of cylinders, the bottom of the cylinder is mounted on the outside of the corresponding medicine storage grooves and the two are in contact with each other, and the back of the base is processed with a lead groove, the lead groove passes through the areas corresponding to all the medicine storage grooves and a through hole connecting the medicine storage groove is opened on the lead groove, which is characterized in that there is a distance between each adjacent two cylinders in the multiple cylinders and a transverse connecting rib is processed between each adjacent two cylinders; a plurality of ventilation and water holes are opened on the base, and the ventilation and water holes are located between the cylinders.

[0006] Preferably, the medicine storage tank is generally small at the top and large at the bottom, and has an inverted R corner at the top, or the top of the medicine storage tank is a truncated cone with a small top and a large bottom. This design facilitates the connection between the cylinder and the base. After assembly, there is a gap between the top of the medicine storage tank and the inner wall of the cylinder to prevent the accumulated water in the cylinder from falling and soaking the propellant, and the accumulated water thus falls into the gap between the two cylinders and is discharged from the cylinder.

[0007] Preferably, an arc-shaped plastic cape is processed on both side walls of the lead slot, and there is a gap between the tops of the two plastic capes. The two plastic capes have the elasticity to separate at the tops when there is external force to allow the lead to pass into the lead slot, and to return to the original state when there is no external force. This design can protect the lead from falling off.

[0008] Preferably, the same plastic protective tube is processed on the outer periphery of all the barrels. The design of the plastic protective tube is to prevent plastic fragments from flying around after the barrel explodes, control the flying distance of the fragments, and ensure safe and stable use. The outer wall of the plastic protective tube is smooth, which is more convenient for labeling text, patterns and trademarks. A lead placement groove is processed on the outer wall of the plastic protective tube, and the ignition fuse can be placed in the groove to prevent friction with external objects, thereby increasing safety and reliability.

[0009] Preferably, the transverse connecting rib between each two adjacent cylinders is designed to be one, and the transverse connecting rib is arranged from the bottom of the cylinder side wall and its height is set according to design requirements. This design increases the connection strength between the cylinders.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. By leaving a gap between the cylinders and leaving ventilation holes on the base, compared with the previous close fit between the cylinders, it is convenient to discharge the water droplets condensed due to moisture during storage from the gap outside the cylinder and then through the ventilation holes on the base. At the same time, the ventilation holes can ventilate the cylinders, making the fireworks outer cylinder moisture-proof, effectively improving the quality of the fireworks outer cylinder and reducing the harshness of the storage environment of the fireworks outer cylinder;

[0012] 2. The ventilation and water holes on the base are provided to prevent the base from being deformed after repeated explosions, thereby extending the service life of the outer tube of the fireworks of the present invention. In addition, the ventilation and water holes are provided to reduce the weight of the base and the material cost.

[0013] 3. The setting of the plastic protective tube can effectively enhance the connection strength between the cylinders, shorten the flying distance of the plastic fragments after the cylinder explodes, and improve the safety performance;

[0014] 4. The plastic outer cylinder of the present invention has the characteristics of high strength, reusability and environmental protection of ordinary plastic outer cylinders, and eliminates the need for basin assembly, making the operation simpler;

[0015] 5. The plastic outer cylinder of the present invention is stably assembled and convenient for mechanized production, which can effectively improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a three-dimensional diagram of the structure

[0017] Figure 2 A three-dimensional view of the cylinder of the present invention as viewed from the bottom

[0018] Figure 3 A three-dimensional view of the base of the present invention viewed from the front

[0019] Figure 4 This is a three-dimensional view of the base of the present invention viewed from the back. DETAILED DESCRIPTION

[0020] The present invention is now further described in conjunction with the accompanying drawings. The following are only preferred embodiments of the present invention and do not limit the scope of protection of the present invention. Any other technical solutions equivalent to the present invention are within the scope of protection of the present invention. The connection method of the following "processing" can be one-piece injection molding or can be connected by gluing.

[0021] like Figure 1-4As shown, the split type environment-friendly plastic fireworks outer tube of the present invention comprises a plurality of cylinder bodies 1 made of plastic and a base 2 made of plastic, wherein the cylinder bodies 1 and the base 2 can be detachably connected by buckles processed on the outer walls around the plastic protective cylinder 7 and the outer walls around the base, and the cylinder bodies 1 and the base 2 can also be positively detachably connected by a plurality of evenly distributed mounting holes 1.1 processed between the cylinder bodies 1 and the cylinder bodies 1 and a plurality of clips 2.1 processed on the front face of the base 2 and matched with the mounting holes 1.1, each clip 2.1 is composed of two spring pieces, and the bottom of the two spring pieces are connected as one body, and the top is separated, and the top of the two spring pieces is integrally formed with a protrusion; of course, the clip 2.1 can also be processed between the cylinder bodies 1 and the cylinder bodies 1, and the mounting holes 1.1 are processed on the base 2; the front face of the base 2 is processed with medicine containing grooves 3 corresponding to the number of the cylinder bodies 1 by integral injection molding. The medicine storage groove 3 is generally small at the top and large at the bottom, and the top has an inverted R angle or the top of the medicine storage groove is a truncated cone with a small top and a large bottom, which is convenient for connecting the cylinder 1 and the base 2. After assembly, there is a gap between the top of the medicine storage groove 3 and the inner wall of the cylinder 1 to prevent the accumulated water in the cylinder 1 from falling and soaking the propellant. The accumulated water thus falls into the gap between the two cylinders 1 and is discharged out of the cylinder 1; the bottom of each cylinder 1 is mounted on the outside of the corresponding medicine storage groove 3 and the two fit together. A serpentine guide groove 4 is processed on the back of the base 2. The guide groove 4 passes through the areas corresponding to all the medicine storage grooves 3 and a through hole 4.1 connecting the medicine storage groove 3 is opened on the guide groove 4. There is a distance of 1-3 cm between each adjacent two cylinders 1 in the multiple cylinders 1 and a transverse connecting rib 5 is processed between each adjacent two cylinders 1; a plurality of ventilation and water holes 2.2 are opened on the base 2, and the ventilation and water holes 2.2 are located between the cylinders 1 and the cylinders 1.

[0022] An arc-shaped plastic cape 6 is processed on both side walls of the lead groove 4, and a gap is left between the tops of the two plastic capes 6. The two plastic capes 6 have elasticity that the tops are separated when there is external force to allow the lead to pass through, and the two plastic capes return to their original state when there is no external force, which can effectively prevent the lead from popping out. The position of the lead groove 4 of the present invention is located above the position of the bottom of the base 2. When the bottom of the base 2 is placed on the ground or other placement surface, the lead groove 4 is a certain distance away from the ground or other placement surface, so the lead will not be soaked.

[0023] The same plastic protective tube 7 is processed on the outer circumference of all cylinder bodies 1. The design of the plastic protective tube 7 is to prevent plastic fragments from flying around after the cylinder explodes, control the flying distance of the fragments, and ensure the safety and stability of use. In addition, the outer wall of the plastic protective tube 7 is smooth, which is more convenient for labeling text, patterns and trademarks. A lead placement groove 7.1 is processed on the outer wall of the plastic protective tube 7, and the ignition fuse can be placed in the groove to prevent friction with external objects, thereby increasing safety and reliability.

[0024] In the present invention, there is one transverse connecting rib 5 between each two adjacent cylinders 1, and the transverse connecting rib 5 is arranged from the bottom of the side wall of the cylinder 1 and its height is set according to design requirements, so as to effectively increase the connection strength between the cylinders 1 and the cylinders 1.

[0025] The present invention can pre-inject a plurality of cylinders with plastic protective cylinders and transverse connecting ribs, a base with water holes, a medicine storage groove, and a lead groove, and then glue a plastic cape on both sides of the lead groove of the base, and the thickness of the plastic cape gradually becomes thinner from the end close to the lead groove wall to the end far from the lead groove; of course, the plastic cape can also be formed by integral injection molding with the base and the thickness of the plastic cape is consistent. The lead is assembled, and the cylinder and the base are assembled up and down, so as to achieve assembly.

Claims

1. A split type environment-friendly plastic fireworks outer cylinder, comprising a plurality of cylinders made of plastic and a base made of plastic, wherein the cylinders and the base are detachably connected, the front of the base is processed with medicine storage grooves corresponding to the number of cylinders, the bottom of the cylinder is sleeved on the outside of the corresponding medicine storage grooves and the two fit each other, the back of the base is processed with a lead groove, the lead groove passes through the area corresponding to all the medicine storage grooves and a through hole connecting the medicine storage grooves is opened on the lead groove, characterized in that: There is a distance between each adjacent two cylinders in the multiple cylinders, and a transverse connecting rib is processed between each adjacent two cylinders; a plurality of ventilation and water holes are opened on the base, and the ventilation and water holes are located between the cylinders; the above-mentioned medicine storage tank is generally small at the top and large at the bottom, and the top has an inverted R angle, or the top of the medicine storage tank is a conical cone with a small top and a large bottom; the same plastic protective cylinder is processed on the outer periphery of all cylinders, and the cylinder and the base are detachably connected by buckles processed on the outer walls around the plastic protective cylinder and the outer walls around the base, or by multiple evenly distributed mounting holes / clips processed between the cylinders and multiple clips / mounting holes processed on the front of the base. Each mounting hole cooperates with a corresponding clip, and each clip is composed of two spring pieces, and the two spring pieces are connected as a whole at the bottom and separated at the top, and the two spring pieces have a protrusion integrally formed on the top.

2. The split type environmentally friendly plastic firework outer tube according to claim 1 is characterized in that: An arc-shaped plastic cloak is processed on both side walls of the lead groove, and there is a gap between the tops of the two plastic cloaks. The two plastic cloaks have the elasticity that when external force presses down, the tops separate to allow the lead to pass into the lead groove, and when no external force acts, the two plastic cloaks return to their original shape.

3. The split type environmentally friendly plastic firework outer tube according to claim 2 is characterized in that: The transverse connecting rib between each two adjacent cylinders is designed to be one, and the transverse connecting rib is arranged starting from the bottom of the cylinder side wall.

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