Firework launching tube and mold

Abstract

The utility model provides a firework launch canister and mould, the firework launch canister comprises a launch canister body and a reinforcing structure arranged below the launch canister body, the reinforcing structure comprises a base and a reinforcing rib connected with the base and the launch canister body, the section size of the base is larger than that of the launch canister body, and the reinforcing rib is arranged below the launch canister body. The lower surface of the base is concaved to form an avoiding groove, a reinforcing circular truncated cone is arranged in the avoiding groove, a gunpowder channel used for containing gunpowder is formed in the launching barrel, the downward part of the bottom wall of the launching barrel is concaved to form a countersunk groove, and the lower surface of the base is provided with a reinforcing circular truncated cone. The surface of the reinforcing circular truncated cone is partially recessed to form a lead placing groove, a prepared through hole is formed in the groove bottom of the lead placing groove in a penetrating mode, and a penetrating through hole communicated with the prepared through hole is formed in the groove bottom of the countersunk groove in a penetrating mode. According to the utility model, the risk that the firework launch canister is inverted during launching can be reduced, the rising impact force of the rising nitrate is improved, and the safety of the lead is protected at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of firework launching tubes, in particular to a firework launching tube and a mold. Background Art

[0002] Setting off fireworks and firecrackers on festive occasions to create a festive atmosphere is a traditional custom in China. As we all know, the materials used to set off fireworks and firecrackers are all wrapped in the tubes of the fireworks and firecrackers.

[0003] In the existing technology, firework launch tubes usually have a circular cross-section. If you want to manufacture a firework launch tube with a high firing rate and a long range, the axial length of the firework launch tube needs to be certain. If the firework launch tube is too long, the vibration of the gunpowder during the firing process will cause the chassis to be unstable, and there is a possibility of the tube tipping over and injuring people. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the purpose of the present utility model is to provide a fireworks launch tube, aiming to solve the technical problem in the existing technology that fireworks launch tubes are usually circular in cross-section. If a fireworks launch tube with high firing rate and long range is to be manufactured, the axial length of the fireworks launch tube needs to have a certain length. If the fireworks launch tube is too long, the vibration of the gunpowder during the firing process will cause the chassis to be unstable, and there is a possibility of the tube tipping over and injuring people.

[0005] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0006] A fireworks launch tube comprises a launch tube body and a reinforcement structure arranged below the launch tube body, the reinforcement structure comprising a base and reinforcement ribs connecting the base and the launch tube body, the cross-sectional dimensions of the base are larger than the cross-sectional dimensions of the launch tube body, the lower surface of the base is recessed to form an avoidance groove, a reinforcement cone is provided in the avoidance groove, a gunpowder channel for placing gunpowder is formed inside the launch tube body, the bottom wall of the launch tube body is recessed downward to form a countersunk groove, the surface of the reinforcement cone is partially recessed to form a lead placement groove, a preparatory through-hole is penetrated through the bottom of the lead placement groove, and a through-hole connected to the preparatory through-hole is penetrated through the bottom of the countersunk groove.

[0007] According to one aspect of the above technical solution, the base and the reinforced frustum are integrally formed.

[0008] According to one aspect of the above technical solution, the reinforcing ribs are arranged in a triangular shape on the base and the launching barrel.

[0009] The utility model also provides a mold for manufacturing the above-mentioned firework launch tube, comprising an upper mold and a lower mold that are detachably connected to each other, the lower mold comprising a lower shell, the lower shell being concave at one end close to the upper mold to form a first molded groove, the first molded groove being provided with an annular protrusion, the annular protrusion being formed with a second molded groove for molding the reinforcing frustum, the second molded groove being partially raised upward to form a first molded protrusion for molding the lead placement groove, the first molded protrusion being partially raised upward to form a second molded protrusion for molding the preparatory through hole, the upper mold comprising an upper shell, the upper shell being close to the lower shell One side has a conical protrusion embedded in the first molding groove, the side of the conical protrusion close to the first molding groove is hollowed out and provided with a core rod, a third molding groove for molding the launch barrel is formed between the inner wall of the conical protrusion and the core rod, and the side of the conical protrusion close to the first molding groove is provided with a fourth molding groove for molding the reinforcing rib. When the conical protrusion is embedded in the first molding groove, a molding space for molding the base is formed between the top surface of the conical protrusion and the bottom surface of the first molding groove, and the side of the core rod close to the first molding groove is provided with a third molding protrusion for molding the countersunk groove.

[0010] According to one aspect of the above technical solution, a pressure plate is provided above the upper shell, and the upper shell and the lower shell are detachably connected by a bolt structure, and the bolt structure includes a screw rod that passes through the lower shell, the upper shell and the pressure plate in sequence, and a nut located above the pressure plate and threadedly connected to the screw rod.

[0011] According to one aspect of the above technical solution, a plurality of heating rods and a plurality of temperature sensors are provided inside the upper shell, the temperature sensors are electrically connected to an external temperature controller, and the temperature controller is electrically connected to the heating rods.

[0012] According to one aspect of the above technical solution, the lower mold further includes a first vibration motor connected to the lower shell, and the upper mold further includes a second vibration motor connected to the upper shell.

[0013] According to one aspect of the above technical solution, a first pull nail is provided on the lower shell, and a second pull nail is provided on the upper shell.

[0014] According to one aspect of the above technical solution, an embedding groove and an embedding block are respectively provided on opposite sides of the lower shell and the upper shell, and the embedding groove and the embedding block are matched with each other.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] By arranging a base under the launch tube and arranging reinforcing ribs between the base and the launch tube, wherein the cross-sectional size of the base is larger than the cross-sectional size of the launch tube, the reinforcing ribs can reduce the amplitude of the lateral shaking of the launch tube during launch, and the reinforcing ribs can further resist the pressure generated by the explosion of the propellant at the bottom of the launch tube, thereby improving the radial strength and rigidity of the launch tube, and thus increasing the stability of the firework launch tube during launch. By arranging an avoidance groove in the lower surface of the base and arranging a reinforcing cone in the avoidance groove, the weight of the bottom surface of the launch tube can be increased, the risk of the launch tube tipping over during launch is reduced, and the safety is further improved. By arranging a countersunk groove inside the launch tube, the countersunk groove is used to place rising saltpeter (that is, to provide an upper Because the cross-sectional dimensions of the countersunk groove are smaller than those of the launch tube, aerodynamically, the rising gunpowder can provide a stronger impact after being ignited, thereby increasing the launch height of the effect piece (i.e., the colorful fireworks) with the same amount of propellant. By providing a fuse placement groove in the bottom of the reinforced cone, the fuse placement groove is buried when the fireworks launch tube is placed vertically, so this design structure can protect the fuse from damage. By providing a preparatory through-hole in the fuse placement groove and providing a through-hole connected to the preparatory through-hole through the bottom of the countersunk groove, the fuse of the rising gunpowder is passed from the through-hole to the preparatory through-hole, and connected in the fuse placement groove, the fireworks launch tube is assembled.

[0017] The utility model can reduce the risk of a firework launch tube tipping over during launch, increase the rising impulse of the rising saltpeter, and protect the safety of the fuse at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a fireworks launch tube in the first embodiment of the present utility model at a first viewing angle;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the fireworks launch tube in the second perspective;

[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the fireworks launch tube in the third perspective;

[0021] Figure 4 This is a schematic structural diagram of the mold in the second embodiment of the present utility model;

[0022] Figure 5 for Figure 4 Exploded view of the structure of the mold;

[0023] Figure 6 for Figure 5 Schematic diagram of the structure of the middle and lower mold parts;

[0024] Figure 7 for Figure 5 Structural explosion diagram of the middle and upper mold parts;

[0025] Figure 8 for Figure 5 Schematic diagram of the structure of the middle and upper mold parts;

[0026] Figure 9 This is a structural diagram of the molding space after the lower mold part and the upper mold part are closed in the second embodiment of the present invention;

[0027] Description of main component symbols:

[0028] Launch tube 10 base 11 reinforcement 12 avoidance groove 13 Strengthened round table 14 Lead placement groove 15 Prepare through hole 16 Through hole 17 countersunk groove 18 Upper shell 20 Lower shell 30 pressure plate 40 screw 41 Nut 42 First pull nail 31 First vibration motor 32 Embedded slot 33 First molded groove 34 Ring bump 35 Second molded groove 36 First molded bump 37 Second molded bump 38 Molding space 39 Cone bump 22 mandrel 21 Second pull nail 23 Second vibration motor 24 Fourth molded groove 25 The third molded groove 26 The third molded bump 27 Embed Block 28

[0029] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0030] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] See also Figures 1 to 3, shown is a firework launch tube in the first embodiment of the present utility model, comprising a launch tube body 10 and a reinforcement structure provided below the launch tube body 10, the reinforcement structure comprising a base 11 and a reinforcement rib 12 connecting the base 11 and the launch tube body 10, the cross-sectional size of the base 11 is larger than the cross-sectional size of the launch tube body 10 and larger than one-third of the height of the launch tube body 10, the lower surface of the base 11 is recessed to form an avoidance groove 13, a reinforcement truncated cone 14 is provided in the avoidance groove 13, a gunpowder channel for placing gunpowder is formed inside the launch tube body 10, the bottom wall of the launch tube body 10 is recessed downward to form a countersunk groove 18, the surface of the reinforcement truncated cone 14 is partially recessed to form a fuse placement groove 15, the bottom of the lead placement groove 15 is penetrated by a preparatory through-hole 16, and the bottom of the countersunk groove 18 is penetrated by a through-hole 17 connected to the preparatory through-hole 16.

[0034] It can be understood that the present invention provides a base 11 below the launch cylinder 10 and provides a reinforcing rib 12 between the base 11 and the launch cylinder 10, wherein the cross-sectional size of the base 11 is larger than the cross-sectional size of the launch cylinder 10. During launch, the reinforcing rib 12 can reduce the amplitude of the lateral shaking of the launch cylinder 10, and the reinforcing rib 12 can further resist the pressure generated by the explosion of the propellant at the bottom of the launch cylinder 10, thereby improving the radial strength and rigidity of the launch cylinder 10, and thus increasing the stability of the firework launch tube during launch. By providing an avoidance groove 13 in a recessed manner on the lower surface of the base 11 and providing a reinforcing cone 14 in the avoidance groove 13, the weight of the bottom surface of the launch cylinder 10 can be increased, the risk of the launch cylinder 10 falling over during launch is reduced, and the safety is further improved. By providing a countersunk groove 18 inside the launch cylinder 10, the countersunk groove 18 It is used to place rising saltpeter (that is, the propellant powder that provides the rising impulse). Since the cross-sectional size of the countersunk groove 18 is smaller than that of the launch tube 10, according to aerodynamics, the rising saltpeter can provide a stronger impulse after being ignited, thereby increasing the launch height of the effect piece (that is, the colorful fireworks) with the same amount of propellant powder. By providing a fuse placement groove 15 in a recessed manner at the bottom of the reinforced truncated cone 14, the fuse placement groove 15 is buried when the firework launch tube is placed vertically, so this design structure can protect the fuse from damage. By providing a preliminary through hole 16 in the fuse placement groove 15, and providing a through hole 17 connected to the preliminary through hole 16 through the bottom of the countersunk groove 18, the fuse of the rising saltpeter is passed through the through hole 17 to the preliminary through hole 16, and connected in the fuse placement groove 15, thereby completing the assembly of the firework launch tube.

[0035] The utility model can reduce the risk of a firework launch tube tipping over during launch, increase the rising impulse of the rising saltpeter, and protect the safety of the fuse at the same time.

[0036] Specifically, in this embodiment, the base 11 and the reinforcing cone 14 are integrally formed, and the reinforcing ribs 12 are arranged in a triangular shape on the base 11 and the launching tube 10 .

[0037] It can be understood that the base 11 and the reinforcing cone 14 are integrally formed to improve the overall stability of the firework launch tube. The reinforcing rib 12 is triangular in shape, with two right-angled sides located on the base 11 and the launch tube body 10 respectively. This structure can further increase the integrity between the launch tube body 10 and the base 11, reducing the risk of the tube tipping over.

[0038] In summary, the fireworks launch tube in the above-mentioned embodiment of the present invention can reduce the risk of the fireworks launch tube tipping over during launch, increase the rising impact of the rising gunpowder, and protect the safety of the fuse.

[0039] Please refer to Figures 4 to 9 , shown is a mold in the second embodiment of the present invention, which is used to manufacture the firework launch tube in the first embodiment, and specifically includes an upper mold and a lower mold that are detachably connected to each other. The lower mold includes a lower shell 30, and the lower shell 30 is recessed at one end near the upper mold to form a first molded groove 34. The first molded groove 34 is provided with an annular protrusion 35, and the annular protrusion 35 is formed with a second molded groove 36 for molding the reinforcing cone 14. The second molded groove 36 partially protrudes upward to form a first molded protrusion 37 for molding the lead placement groove 15. The first molded protrusion 37 partially protrudes upward to form a second molded protrusion 38 for molding the preparatory through hole 16. The upper mold includes an upper shell 20, and the upper shell 20 is close to the lower shell 30. One side has a conical protrusion 22 embedded in the first molding groove 34, the side of the conical protrusion 22 close to the first molding groove 34 is hollowed out and provided with a core rod 21, and a third molding groove 26 for molding the launch barrel 10 is formed between the inner wall of the conical protrusion 22 and the core rod 21, and the side of the conical protrusion 22 close to the first molding groove 34 is provided with a fourth molding groove 25 for molding the reinforcing rib 12. When the conical protrusion 22 is embedded in the first molding groove 34, a molding space 39 for molding the base 11 is formed between the top surface of the conical protrusion 22 and the bottom surface of the first molding groove 34, and the side of the core rod 21 close to the first molding groove 34 is provided with a third molding protrusion 27 for molding the countersunk groove 18.

[0040] It can be understood that the method of using the mold is: filling the molding material in the first molding groove 34, then connecting and pressing the upper shell 20 and the lower shell 30, and then starting the heating device. The molding material will flow inside due to the pressure and pass through each molding groove and each protrusion to form a firework launch tube structure as shown in Example 1.

[0041] Specifically, a pressure plate 40 is provided above the upper shell 20, and the upper shell 20 and the lower shell 30 are detachably connected by a bolt structure, and the bolt structure includes a screw 41 that passes through the lower shell 30, the upper shell 20 and the pressure plate 40 in sequence, and a nut 42 located above the pressure plate 40 and threadedly connected to the screw 41.

[0042] It can be understood that in order to ensure that the upper shell 20 and the lower shell 30 can be fully compressed, a pressure plate 40 is set above the upper shell 20, and then the screw 41 is passed through the screw hole, and finally a nut 42 is used above the pressure plate 40 to rotate on the screw 41 until the nut 42 is completely fitted with the pressure plate 40. This pressure maintaining device is easy to use and can avoid the use of a press for compression, thereby reducing the service life of the mold.

[0043] Furthermore, a plurality of heating rods and a plurality of temperature sensors are provided inside the upper shell 20 . The temperature sensors are electrically connected to an external temperature controller, and the temperature controller is electrically connected to the heating rods.

[0044] It can be understood that the heating rod and the temperature sensor are buried inside the upper shell 20, and a heating rod is also provided on the core rod. The function of the temperature sensor is to monitor the temperature of the heating rod, and the temperature value can be viewed in an external temperature controller. The staff can adjust the temperature of the heating rod through the temperature controller according to the actual situation during the molding process.

[0045] Furthermore, the lower mold further includes a first vibration motor 32 connected to the lower shell 30 , and the upper mold further includes a second vibration motor 24 connected to the upper shell 20 .

[0046] It can be understood that ventilation holes (not shown in the figure) are also provided on the lower shell 30 and the upper shell 20. Through the vibration of the first vibration motor 32 and the second vibration motor 24, the internal gas can be discharged from the ventilation holes to avoid excessive internal gas affecting the molding effect.

[0047] Furthermore, a first pull nail 31 is provided on the lower shell 30, and a second pull nail 23 is provided on the upper shell 20; an embedding groove 33 and an embedding block 28 are respectively provided on opposite sides of the lower shell 30 and the upper shell 20, and the embedding groove 33 and the embedding block 28 are arranged in coordination.

[0048] It is understandable that since the lower shell 30 of the upper shell 20 needs to be heated by a heating rod during the molding process, the surface of the shell has a certain temperature after molding. In order to facilitate the removal of the upper shell 20 and the lower shell 30 and avoid burns, the first pull pin 31 and the second pull pin 23 are set as the contact points for the fingers.

[0049] Furthermore, the matching arrangement of the embedding block 28 and the embedding groove 33 is to better align the upper shell 20 and the lower shell 30 to avoid alignment errors that may cause structural errors in the finished firework launch tube after molding.

[0050] The method of making a firework launch tube using a mold is as follows:

[0051] The first molding groove 34 is filled with molding material, wherein the molding material is a degradable material, preferably plant fiber;

[0052] Hold the first pull nail 31 and the second pull nail 23 to insert the embedding block 28 of the upper shell 20 into the embedding groove 33 of the lower shell 30. At this time, the frustum protrusion 22 has also entered the first molded groove 34.

[0053] The screws are passed through the screw holes on the lower shell 30, the upper shell 20 and the pressure plate 40 in sequence, and the nuts 42 are screwed on the screw holes until the nuts 42 press the pressure plate 40 tightly.

[0054] The heating rod is started to heat and form the flowing molding material in the upper shell 20 and the lower shell 30;

[0055] Loosen the nut 42 and remove the screw 41. Grasp the first pull pin 31 and the second pull pin 23 to separate the upper shell 20 from the lower shell 30. Use special tools to remove the finished firework launch tube.

[0056] A through hole 17 connected to the preliminary through hole 16 is prepared from the countersunk groove 18 by a punching device (not shown in the figure).

[0057] The through hole 17 is not formed at one time during molding because if a bump for molding the through hole 17 is provided in the mold, the bump will hit the third molded bump 27 above. If the pressure is too high, the third molded bump 27 will be damaged.

[0058] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0059] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A firework launch tube, characterized in that: It includes a launching cylinder and a reinforcing structure arranged below the launching cylinder, the reinforcing structure includes a base and reinforcing ribs connecting the base and the launching cylinder, the cross-sectional size of the base is larger than the cross-sectional size of the launching cylinder, the lower surface of the base is recessed to form an avoidance groove, the avoidance groove is provided with a reinforcing cone, a gunpowder channel for placing gunpowder is formed inside the launching cylinder, the bottom wall of the launching cylinder is recessed downward to form a countersunk groove, the surface of the reinforcing cone is partially recessed to form a lead placement groove, the bottom of the lead placement groove is penetrated by a preparatory through hole, and the bottom of the countersunk groove is penetrated by a through hole connected to the preparatory through hole.

2. The firework launch tube according to claim 1, characterized in that: The base and the reinforced frustum are integrally formed.

3. The firework launch tube according to claim 1, characterized in that: The reinforcing ribs are arranged in a triangular shape on the base and the launching tube.

4. A mold for manufacturing a firework launch tube according to any one of claims 1 to 3, characterized in that: The invention comprises an upper mold and a lower mold which are detachably connected to each other, wherein the lower mold comprises a lower shell, and one end of the lower shell close to the upper mold is recessed to form a first molded groove, an annular protrusion is provided in the first molded groove, and a second molded groove for molding the reinforcing truncated cone is formed in the annular protrusion, and the second molded groove part protrudes upward to form a first molded protrusion for molding the lead placement groove, and the first molded protrusion part protrudes upward to form a second molded protrusion for molding the preparatory through hole, and the upper mold comprises an upper shell, and a side of the upper shell close to the lower shell has a protrusion which is embedded in the first molded groove. A truncated cone protrusion, wherein the interior of the truncated cone protrusion close to the first molding groove is hollowed out and provided with a core rod, a third molding groove for molding the launch barrel is formed between the inner wall of the truncated cone protrusion and the core rod, and a fourth molding groove for molding the reinforcing rib is provided on the side of the truncated cone protrusion close to the first molding groove. When the truncated cone protrusion is embedded in the first molding groove, a molding space for molding the base is formed between the top surface of the truncated cone protrusion and the bottom surface of the first molding groove, and a third molding protrusion for molding the countersunk groove is provided on the side of the core rod close to the first molding groove.

5. The mold according to claim 4, characterized in that A pressure plate is provided above the upper shell, and the upper shell and the lower shell are detachably connected by a bolt structure. The bolt structure includes a screw rod that passes through the lower shell, the upper shell and the pressure plate in sequence, and a nut that is located above the pressure plate and threadedly connected to the screw rod.

6. The mold according to claim 4, characterized in that A plurality of heating rods and a plurality of temperature sensors are provided inside the upper shell. The temperature sensors are electrically connected to an external temperature controller, and the temperature controller is electrically connected to the heating rods.

7. The mold according to claim 4, characterized in that The lower mold further includes a first vibration motor connected to the lower shell, and the upper mold further includes a second vibration motor connected to the upper shell.

8. The mold according to claim 7, characterized in that The lower shell is provided with a first pull nail, and the upper shell is provided with a second pull nail.

9. The mold according to claim 8, characterized in that An embedding groove and an embedding block are respectively provided on opposite sides of the lower shell and the upper shell, and the embedding groove and the embedding block are matched with each other.

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