阅读说明：本技术 一种组合烟花发射筒和具有其的组合烟花 (Combined firework launching tube and combined firework with same ) 是由 陈正权 于 2020-12-04 设计创作，主要内容包括：本发明公开了组合烟花发射筒,包括外筒体,外筒体上端开口,下端设置有挡板,外筒体的内侧壁上设有若干凸条,凸条从外筒体的下端起向上端延伸,且平行于外筒体的轴线；装有烟花效果药的内筒体,内筒体压装在外筒体内,且内筒体的外壁与凸条挤压,使外筒体的横截面积变小,可使效果药的发射高度更为精准,减少发射药的用量,节省制造材料,节约生产成本,提高组合烟花的安全系数。(The invention discloses a combined firework launching tube, which comprises an outer tube body, wherein the upper end of the outer tube body is provided with an opening, the lower end of the outer tube body is provided with a baffle, the inner side wall of the outer tube body is provided with a plurality of convex strips, and the convex strips extend from the lower end of the outer tube body to the upper end and are parallel to the axis of the outer tube body; the inner barrel body is filled with the firework effect powder, the inner barrel body is pressed in the outer barrel body, the outer wall of the inner barrel body is extruded with the raised lines, the cross section area of the outer barrel body is reduced, the emission height of the effect powder can be more accurate, the using amount of the emission powder is reduced, manufacturing materials are saved, the production cost is saved, and the safety factor of combined fireworks is improved.)

1. A combined firework launching tube is characterized by comprising:

the outer barrel (100), the upper end of the outer barrel (100) is open, the lower end of the outer barrel (100) is provided with a baffle (110), the inner side wall of the outer barrel (100) is provided with a plurality of convex strips (120), the convex strips (120) extend from the lower end of the outer barrel (100) to the upper end and are parallel to the axis of the outer barrel (100);

the inner cylinder body (200) is filled with firework effect powder, the inner cylinder body (200) is pressed in the outer cylinder body (100), and the outer wall of the inner cylinder body (200) is extruded with the raised lines (120), so that the cross sectional area of the outer cylinder body (100) is reduced.

2. The combined firework emission tube as claimed in claim 1, wherein a gap between the outer wall of the inner tube (200) and the side wall of the outer tube (100) is 0.2-2 mm.

3. The combined firework emission tube as claimed in claim 1, wherein the width of the ribs (120) is 0.2-5 mm.

4. The combined firework emission tube as claimed in claim 1, wherein the thickness of the ribs (120) is 0.2-2 mm.

5. The combined firework emission tube as claimed in claim 1, wherein the wall thickness of the outer tube body (100) is 0.5-3 mm.

6. A combination firework launcher according to claim 1, wherein the ribs (120) have a triangular or semi-circular or elliptical cross-sectional shape.

7. The combined firework launching tube as claimed in claim 1, wherein three ribs (120) are arranged on the inner side wall of the outer tube body (100), and the ribs (120) are circumferentially and uniformly arranged around the axis of the outer tube body (100).

8. The combination firework launching tube as claimed in claim 1, wherein the outer tube body (100) and the inner tube body (200) are plastic tube bodies.

9. A combination firework characterised in that it comprises a combination firework launcher as claimed in any one of claims 1 to 8.

10. The combination firework of claim 9, wherein the plurality of combination firework launching tubes are integrally formed into a one-piece combination firework.

Technical Field

The invention relates to the technical field of fireworks, in particular to a combined firework launching tube.

Background

Fireworks have a long history in China and are popular with people due to the fact that fireworks are bright and colorful. The traditional cylindrical firework launching tube is composed of a single paper tube as a basic launching unit. The bottom of a single paper tube is sealed by a mud bottom, the paper tubes are bonded by glue, the bottom of the paper tube is sealed by the mud bottom, the top of the paper tube is sealed by a hard paper cover, and paper products and the mud bottom are easily affected with damp. The paper tube and the hard paper cover are easy to deform after being wetted, so that a good sealing effect cannot be formed between the paper tube and the hard paper cover, the emission height of effect chemicals (which explode and play a firing effect) is reduced, and the low-explosion phenomenon is caused; after the mud head back cover of fiber container below wets, earth can become flexible and lead to sealed effect variation and pressure release, and effect medicine can't launch to the high altitude, appears fried section of thick bamboo phenomenon, seriously threatens viewing personnel's safety.

The single paper launching cylinders are bonded by glue, but the glue loses efficacy after being affected with damp, the phenomena of cylinder scattering and land falling are often caused, and potential safety hazards such as oblique flying, transverse flying, messy frying and the like exist during launching. In particular, in order to make the firework look bigger, many manufacturers add square foam strips or foam boards between the paper tubes, which further weakens the structure of the combined firework.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the combined firework launching tube, which can enable the launching height of the effect powder to be more accurate, save manufacturing materials and save production cost.

The invention also provides a combined firework with the combined firework launching tube.

The combined firework launching tube according to the embodiment of the first aspect of the invention comprises: the upper end of the outer barrel is provided with an opening, the lower end of the outer barrel is provided with a baffle, the inner side wall of the outer barrel is provided with a plurality of raised lines, and the raised lines extend from the lower end to the upper end of the outer barrel and are parallel to the axis of the outer barrel; the inner cylinder body is filled with firework effect powder, the inner cylinder body is pressed in the outer cylinder body, and the outer wall of the inner cylinder body is extruded with the raised lines, so that the cross sectional area of the outer cylinder body is reduced.

The combined firework launching tube provided by the embodiment of the invention at least has the following technical effects: the inner cylinder body and the raised lines are extruded to generate proper friction force, the outer cylinder body is slightly deformed due to extrusion, so that a gap between the outer cylinder body and the inner cylinder body is reduced, a better closed space is formed, and the emission height of the inner cylinder body is improved.

The traditional fireworks are sealed with mud, covered with hard paper after being filled with propellant powder, and then continuously covered with a hard paper after being put into the effect cartridge. After the propellant powder is ignited, the combustion gas does work to push the hard paper sheet, and the effect cartridge is driven by the hard paper sheet to move and is launched into the air. The embodiment of the invention is that the inner wall of the outer cylinder body is provided with a plurality of convex strips, the bottom of the outer cylinder body is sealed, the outer cylinder body is provided with an ignition hole, the inner cylinder body is directly pressed into the outer cylinder body after propellant powder is filled in, the propellant powder is ignited to burn and do work, the inner cylinder body is directly pushed to be launched into the air, and hard paper sheets are saved.

The paper material that traditional fireworks used, wet easy deformation, effect cartridge case and launch canister need keep great clearance, if the distance is too little, wet easy card of deformation back effect cartridge case in the launch canister, take place to explode a section of thick bamboo. In some embodiments of the invention, the outer cylinder body and the inner cylinder body are made of plastic materials, and are not easy to deform and not affected by damp, so that the launching is more accurate and the sealing effect is better. The fit clearance between interior barrel and outer barrel is less, and highly more accurate of barrel transmission in more enabling, for reaching appointed transmission height, compare in traditional fireworks, reducible propellant powder more than half, can also reduce outer barrel height half simultaneously, reduce the propellant powder quantity, make the factor of safety of fireworks improve, has reduceed the potential safety hazard.

In some embodiments of the present invention, a gap between the outer wall of the inner cylinder and the side wall of the outer cylinder is 0.2-2 mm.

In some embodiments of the present invention, the width of the protruding strip is 0.2-5 mm.

In some embodiments of the present invention, the thickness of the protruding strips is 0.2-2 mm.

In some embodiments of the invention, the wall thickness of the outer cylinder is 0.5-3 mm.

In some embodiments of the present invention, the cross-sectional shape of the rib may be triangular or semicircular or elliptical.

In some embodiments of the present invention, three of the convex strips are disposed on the inner side wall of the outer cylinder, and the convex strips are uniformly arranged around the axis of the outer cylinder in the circumferential direction.

In some embodiments of the invention, the outer cylinder and the inner cylinder are plastic cylinders.

The combined firework according to the second aspect embodiment of the invention comprises the combined firework launcher of the first aspect embodiment of the invention.

The combined firework disclosed by the embodiment of the invention at least has the following technical effects: the emission is higher when the same emission dose is used; when the same emission height is reached, the required dosage of the propellant is reduced by more than half, and meanwhile, the height of the outer barrel can be reduced by half.

In some embodiments of the invention, a plurality of the combined firework launching tubes are integrally formed into an integrated combined firework.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a combined firework launcher according to an embodiment of the invention;

FIG. 2 is a top view of a combined firework launcher employing triangular cross-section ribs in accordance with an embodiment of the present invention;

FIG. 3 is a top view of the combined firework discharging canister of the embodiment of the invention with ribs having oval cross sections.

Reference numerals:

outer cylinder 100, baffle 110, rib 120, inner cylinder 200.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, a combined firework launcher according to an embodiment of the first aspect of the present invention comprises: the outer barrel 100 is provided with an opening at the upper end, a baffle 110 is arranged at the lower end, a lead hole is arranged at the bottom, a plurality of convex strips 120 are arranged on the inner side wall of the outer barrel 100, and the convex strips 120 extend from the lower end to the upper end of the outer barrel 100 and are parallel to the axis of the outer barrel 100; the upper end of the inner cylinder body 200 is closed, the lower end of the inner cylinder body 200 is opened, and the outer diameter of the inner cylinder body 200 is smaller than the inner diameter of the outer cylinder body 100; after the inner cylinder 200 is pressed into the outer cylinder 100, the outer wall of the inner cylinder 200 is pressed against the rib 120, thereby reducing the cross-sectional area of the outer cylinder 100.

The bottom of the outer cylinder 100 is filled with propellant powder, and the inner cylinder 200 is tightly filled with effect powder. The baffle 110 is provided with an ignition hole which is connected with the lead groove to realize ignition of propellant powder, after the lead is ignited, the propellant powder is ignited by sparks through the ignition hole, the propellant powder is burnt to ignite the ignition lead in the inner cylinder body 200, the inner cylinder body 200 is pushed to be launched into the air by acting, and the lead in the inner cylinder body 200 ignites the inner effect powder. The inner cylinder body 200 is pressed into the bottom of the outer cylinder body 100 to be reliably contacted with propellant powder, and the plurality of convex strips 120 are extruded with the outer wall of the inner cylinder body 200 to generate proper friction force, so that the inner cylinder body 200 is fixedly supported; the convex strip 120 is extruded to enable the side wall of the outer barrel 100 to slightly deform, the sectional area of the outer barrel 100 is reduced, the gap between the side wall of the outer barrel 100 and the inner barrel 200 is reduced, a closed space is better formed, gas generated after propellant powder is ignited rapidly expands and is suppressed between the outer barrel 100 and the inner barrel 200, the inner barrel 200 is pushed by the gas to do more work due to good space tightness, and the launching height is higher. Compared with the traditional fireworks, the combined firework launching tube provided by the embodiment of the invention has the advantage that the propellant consumption required by the combined firework launching tube can be reduced by more than half to achieve the same launching height. Meanwhile, the height of the outer cylinder 100 can be reduced by half, so that materials and cost are saved, the size of the combined firework is smaller, and the transportation and storage cost is reduced.

In some embodiments of the present invention, the gap between the outer wall of the inner cylinder 200 and the side wall of the outer cylinder 100 is 0.2-2 mm. If the gap is less than 0.2mm, the inner cylinder 200 is difficult to press into the outer cylinder 100, and the generated friction force is greater than the thrust force generated by the combustion of the propellant, so that the inner cylinder 200 cannot be launched to cause the explosion; if the gap is larger than 2mm, the pressure of the gas generated by burning the propellant is released too fast, the thrust is small, the pushing acting time is short, and the launching height of the inner cylinder body 200 is not high.

In some embodiments of the present invention, the width of the protruding strips 120 is 0.2-5 mm, and the thickness of the protruding strips 120 is 0.2-2 mm.

When width or thickness of sand grip 120 are less than 0.2mm, just can not play the extrusion and produce suitable frictional force, when the width of sand grip 120 is greater than 5mm, can make the frictional force increase of interior barrel 200 and sand grip 120, when the thickness of sand grip 120 is greater than 2mm, can make the frictional force increase of interior barrel 200 and sand grip 120, it is too big still to lead to the clearance between the outer wall of interior barrel 200 and the lateral wall of outer barrel 100 indirectly, the gas pressure release that the propellant burning produced is too fast, it is low excessively to make the transmission height of interior barrel 200.

In some embodiments of the present invention, the wall thickness of the outer cylinder 100 is 0.5 to 3 mm.

When the wall thickness of the outer cylinder 100 is less than 0.5mm, the outer cylinder cannot bear the pressure of gas expansion generated at the moment of propellant powder combustion, so that the structure is damaged and the cylinder frying occurs; when the wall thickness is greater than 3mm, the outer cylinder 100 is difficult to be extruded and deformed, and the sealing effect between the outer cylinder 100 and the inner cylinder 200 is reduced.

The paper launch canister wall thickness of traditional fireworks generally is 2 ~ 3mm, and effect cartridge case wall thickness generally is 2 ~ 3mm, and the fit clearance between effect cartridge case and the launch canister is 3 mm. The wall thickness of the outer cylinder body 100 is 0.5-3 mm, the wall thickness of the inner cylinder body 200 is 0.5-2 mm, and the fit clearance between the outer cylinder body 100 and the inner cylinder body 200 is less than 1 mm; when the effect powder with the same volume is filled, the inner cylinder 200 is reduced by 2-3 mm compared with the traditional fireworks, and the outer cylinder 100 is reduced by 5-6 mm compared with the traditional fireworks, so that the material and labor cost can be saved by about 20%.

Referring to fig. 2 and 3, in some embodiments of the present invention, the cross-sectional shape of the rib 120 may be triangular or semicircular or elliptical. Preferably, the triangular or semi-circular or elliptical configuration is stable, and the cross-section of the ribs 120 is not easily deformed or lost by extrusion. Of course, the cross-sectional shape of the ridge 120 may be other shapes such as a rectangle and a square.

In some embodiments of the present invention, three ribs 120 are disposed on the inner sidewall of the outer cylinder 100, and the ribs 120 are uniformly arranged circumferentially around the axis of the outer cylinder 100. Preferably, three convex strips 120 are arranged and uniformly arranged, so that the inner barrel 200 can be stably clamped on the center line of the outer barrel 100, and an accurate and stable emission effect is ensured.

In some embodiments of the present invention, the outer cylinder 100 and the inner cylinder 200 are plastic cylinders.

The plastic barrels of the outer barrel 100 and the inner barrel 200 can be made of recycled plastic, so that not only can the waste generated after fireworks are set off be reduced, but also the plastic waste can be recycled, and the waste plastic used for the launching barrels has low requirements on heavy metal content, sanitary standard and the like because the plastic materials adopted by the combined firework launching barrels are non-human body direct contact materials and are irrelevant to food and the like, so that a wide utilization space can be provided for the waste plastic in life, such as waste plastic bottles, plastic bags and the like. The inner cylinder 200 is preferably a plastic cylinder, but a paper cylinder may be used.

The combined firework according to the second aspect embodiment of the invention comprises the combined firework launcher of the first aspect embodiment of the invention. When producing this kind of combination fireworks, need not add the cardboard again and seal in to outer barrel 200, avoided the cardboard to wet the problem that sealed inefficacy leads to launching height low, has the potential safety hazard, still reduced the process of placing the cardboard simultaneously, saved the manufacturing time, reduced the manpower and improved fireworks production efficiency. As the production is not added with the hard paper pieces, the paper garbage after the fireworks are set off can not be generated to influence the environmental sanitation.

In some embodiments of the present invention, the plurality of combined firework launching tubes are integrally formed into an integrated combined firework.

In the existing fireworks, in order to make the fireworks look bigger, a plurality of manufacturers can add foam square strips between the paper tube and the paper tube or clamp the foam square strips between the paper tube and the paper tube, so that the fireworks are further infirm in structure and are easy to have the phenomena of scattering, falling down and the like, and the effect powder is caused to fly horizontally, explode disorderly and the like; the combined firework launching tube is integrally produced and formed through the die, and the combined firework launching tubes are directly connected through production raw materials such as plastics, so that the phenomena of scattering, falling down and the like can be avoided.

The embodiments of the application have the following advantages in the aspects of safety and environmental protection respectively:

Secure

1. change in material. The plastic outer barrel body and the plastic inner barrel body are not easy to deform and are not affected by moisture, so that the phenomena of barrel clamping and barrel frying are avoided.

2. A structural change. The outer cylinder body and the outer cylinder body are connected and molded through injection molding of a mold instead of being bonded by glue as in the traditional fireworks, so that the phenomena of cylinder scattering, falling to the ground and random explosion caused by glue wetting failure are avoided.

3. The outer barrel of plastics is with the mould shaping, and the bottom is plastic seal, and not adopt the paper launch tube like traditional fireworks, the bottom is sealed with mud, so can not appear going up damp back mud end and drop and lead to fried a section of thick bamboo.

4. Traditional fireworks lean on the cardboard to seal in the launch canister, and the cardboard can receive the influence of tide, appear launching height low fried phenomenon inadequately, and this application embodiment is by the direct sand grip friction fit with outer barrel of interior barrel, and the reliability is high, low fried phenomenon can not appear.

5. The combination fireworks in this application, the fit clearance of the outer barrel of plastics and interior barrel is little, makes the transmission directional more accurate, can not appear flying phenomenon to one side, and the propellant powder can reduce half simultaneously, has improved factor of safety.

Environment-friendly

1. A source of material. The plastic garbage in life is mainly utilized, and mixed plastics such as plastic bottles and plastic packaging bags are beneficial to recycling of garbage and promotion of environmental protection.

2. After the fireworks are set off, the outer cylinder body can be recycled, and the damage to the environment is reduced.

3. When the gas burner is set off, no hard paper sheet flies to the sky, the inner cylinder body is not sealed by mud, and no mud flies to the sky to cause pollution.

4. The use amount of the propellant is reduced, so that the generation of polluted gas after the propellant is ignited can be reduced, and the pollution to the atmosphere is reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.