Combined shaped die pressing firework

Abstract

The utility model discloses a combined special-shaped mould pressing firework, which is composed of a plurality of mould pressing unit blocks spliced together, each mould pressing unit block is composed of a central tubular cavity part and two side spacing parts, the tubular cavity part is provided with at least one row of tubular cavities, the axes of the tubular cavities are all perpendicular to the horizontal plane, the spacing parts are correspondingly arranged on the two opposite outer sides of the tubular cavity part, each spacing part is composed of a cavity body, the outer walls of the two cavity bodies are inclined surfaces, the upper ends of the inclined surfaces are outwardly inclined, and the two inclined surfaces are symmetrically distributed left and right. The two adjacent mould pressing unit blocks are correspondingly spliced through the inclined surfaces, and the mould pressing firework in the special-shaped combination or other combination form can be conveniently spliced and combined. The difficulty of one-time mould pressing processing of the mould pressing unit block as a whole is greatly reduced, thereby effectively solving the mould pressing production difficulty problem of the special-shaped combination firework.

Description

Technical Field

[0001] This utility model relates to a non-molded firework. Background Technology

[0002] Combination fireworks are fireworks products composed of multiple single tubes. Traditional combination fireworks are assembled from multiple paper tubes, which suffers from drawbacks such as numerous processes, low production efficiency, and low product standardization. In recent years, molded combination fireworks have emerged. The slurry is molded into a molded body in one step. Several tubular cavities are evenly distributed in parallel on the molded body. The structure and function of the tubular cavities are similar to those of the single tubes in traditional combination fireworks. The upper end of the tubular cavity is open and the lower end is closed. The tubular cavity contains the pyrotechnic propellant and effect components. Examples include "A Molded Combination Firework" disclosed in Chinese invention patent document CN 102914223A; and "Molded Firework Outer Cylinder, Firework Ball Shell and its Manufacturing Method" disclosed in Chinese invention patent document CN 101377395A.

[0003] Currently, all molded combination fireworks are upright. In upright combination fireworks, the axis of the tubular cavities is perpendicular to the horizontal plane, and the rows of tubular cavities are arranged in parallel. Besides upright combination fireworks, there are also irregularly shaped combination fireworks. In irregularly shaped combination fireworks, the arrangement of the rows of tubular cavities is fan-shaped, as shown in Chinese Patent Document CN201945257U, "A One-Time Molded Combination Firework Launcher with a Built-in Fan-Shaped Structure Device." Other types include W-shaped, V-shaped, left-tilted, right-tilted, and five-finger-shaped fireworks. Unlike upright fireworks, in irregularly shaped combination fireworks, there is a certain angle of inclination (launch deflection angle) between the axes of the rows of tubular cavities. The lower ends of the rows of tubular cavities are close together, and there is a gap between the upper ends of adjacent rows of tubular cavities. The numerous obliquely distributed tubular cavities make the molding production of irregularly shaped combination fireworks difficult: there are problems such as difficulty in stamping, inconvenience in demolding, and high scrap rate. This necessitates relatively complex mold equipment. For example, the "Firework Mold and Molding Device" disclosed in Chinese Patent Document CN218314204U requires three sets of molds (left, middle, and right) and their corresponding drive mechanisms to work together to complete the molding of a fan-shaped combination firework. Not only is the mold equipment complex and costly to manufacture, but the production efficiency is also low. The maximum production capacity of one machine in 24 hours is only about 40,000 fireworks (one fireworks per tubular cavity), and the scrap rate is between 0.8% and 0.5%. The scrap rate is between 1.5% (generally no higher than 1% for upright combination molding fireworks). Since fireworks molding production is a foaming process, it requires not only supplying hydraulic pressure to meet the molding needs of the mold, but also supplying heat transfer oil for heating (such as boilers) and pressurization (such as pressurization pump sets) to meet the heating needs of the mold and materials. It is a large-scale continuous production mode that requires a lot of basic support and the coordination of multiple departments. Such production volume cannot meet the actual economic benefits required by this production mode. At the same time, the excessively high scrap rate damages the quality and efficiency of the product, such as leading to higher quality inspection costs. Therefore, it has failed to solve the problem of difficult molding production of irregular combination fireworks. Utility Model Content

[0004] To address the aforementioned drawbacks, the technical problem this utility model aims to solve is to provide a modular, irregularly shaped molded firework, effectively resolving the difficulties in the molding production of irregularly shaped modular fireworks. To solve this technical problem, the technical solution adopted by this utility model is a modular, irregularly shaped molded firework, characterized by being composed of several molded unit blocks assembled together; each molded unit block consists of a central cavity and two side spacers; the cavity has at least one row of tubular cavities, the axes of which are perpendicular to the horizontal plane; two opposite outer surfaces of the cavity are correspondingly provided with spacers, each spacer consisting of a hollow body, the outer walls of the two hollow bodies being inclined surfaces, the upper ends of which slope outwards, and the two inclined surfaces being symmetrically distributed left and right.

[0005] The beneficial effects of this utility model are as follows: by adopting the above technical solution, each cavity of the tube portion of the molding unit block is in a state where the axis is perpendicular to the horizontal plane. By setting the gap portion with the outer wall as an inclined surface on both sides of the tube portion, two adjacent molding unit blocks can be spliced ​​together correspondingly through the inclined surface, which can be conveniently spliced ​​and combined to form irregular combination molding fireworks such as fan-shaped, W-shaped, V-shaped, left-leaning, right-leaning, and five-finger-shaped. They can also be spliced ​​into other combination forms as needed. This avoids the problems of difficult stamping, inconvenient demolding, and high scrap rate caused by the oblique distribution of a large number of tubular cavities. Therefore, the difficulty of one-time molding of the molding unit block is greatly reduced, thereby effectively solving the problem of difficult molding production of irregular combination fireworks.

[0006] Preferably, the bottom surface of the molding unit block is provided with a lead wire mounting groove, and the bottom end of each tubular cavity corresponding to the lead wire mounting groove is provided with a flame-passing hole. The lead wire mounting groove is provided with a blind hole for preventing cross-firing that extends into the bottom of the lead wire mounting groove. Further, two or more tubular cavities are provided between two adjacent blind holes for preventing cross-firing, and a flame-transfer groove is provided between the flame-passing holes of two adjacent tubular cavities. The flame-transfer groove is distributed along the lead wire mounting groove and extends into the bottom of the lead wire mounting groove. This ensures the reliability of successful salvo firing.

[0007] Preferably, all four sides of the molded unit block are inclined surfaces, with the upper ends of the inclined surfaces sloping outwards, and the two opposite inclined surfaces are symmetrically distributed left and right. This facilitates splicing into other combinations as needed.

[0008] Preferably, the cavity constituting the spacer is provided with reinforcing ribs to enhance structural strength.

[0009] Preferably, the lumen portion has 1 to 4 rows of tubular cavities, especially 1 to 2 rows.

[0010] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time.

[0011] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions 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 one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0012] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0013] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0014] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0015] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0016] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of the molded unit block (first-person perspective);

[0018] Figure 2 This is a three-dimensional structural diagram of a molded unit block (second perspective).

[0019] Figure 3 This is a schematic diagram of the main structure of the molding unit block;

[0020] Figure 4 This is a schematic diagram of the left-side structure of the molding unit block;

[0021] Figure 5 This is a schematic diagram of the right-side structure of the molding unit block;

[0022] Figure 6 This is a top view of the molded unit block structure.

[0023] Figure 7 This is a bottom view of the molded unit block structure.

[0024] Figure 8 This is a partially enlarged schematic diagram of the bottom structure of the molding unit block (without the heat exchange groove);

[0025] Figure 9 This is a partially enlarged schematic diagram of the bottom structure of the molding unit block (with a heat-exposed groove);

[0026] Figure 10 This is a schematic diagram of a fan-shaped splicing and combination structure of several molded unit blocks;

[0027] Figure 11 This is a schematic diagram of a V-shaped assembly structure of several molded unit blocks;

[0028] Figure 12 This is a schematic diagram of the first type of W-shaped splicing and combination structure of several molded unit blocks;

[0029] Figure 13 This is a schematic diagram of the second type of W-shaped splicing combination structure of several molded unit blocks;

[0030] Figure 14A schematic diagram of a left-leaning and right-leaning splicing combination structure of several molded unit blocks;

[0031] Figure 15 This is a schematic diagram of other splicing and combination structures of several molded unit blocks. Detailed Implementation

[0032] See appendix Figure 1-14 This illustrates a specific structure of the present invention. The combined irregularly shaped molded fireworks are composed of several molded unit blocks assembled together; each molded unit block consists of a central cavity and two side spacers.

[0033] In the example, the lumen section has twenty tubular cavities 1, distributed in a pattern of ten cavities per row × two rows. The axes of all tubular cavities 1 are perpendicular to the horizontal plane, and the axes of the two rows of tubular cavities 1 are parallel and side by side. In other embodiments, the number of rows of tubular cavities 1 in the lumen section can be 1 to 4 or more, and the axes of each row of tubular cavities 1 are parallel and side by side.

[0034] The two opposite outer surfaces of the tubular section are provided with corresponding spacers, each spacer consisting of a cavity 2. The outer walls of the two cavities 2 are inclined surfaces 3, with the upper ends of the inclined surfaces 3 sloping outwards. The two inclined surfaces 3 are symmetrically distributed from left to right. In this example, the cavity 2 constituting the spacer is provided with reinforcing ribs 201 to enhance structural strength.

[0035] Using the above technical solution, each tubular cavity 1 of the molding unit block has its axis perpendicular to the horizontal plane. Adjacent molding unit blocks are spliced ​​together via the inclined surface 3, allowing for easy assembly to form a fan shape (e.g., Figure 10 (As shown). The launch deflection angle of the fireworks is evenly distributed, resulting in a good display effect.

[0036] In other embodiments, by using the inclined plane 3 for corresponding splicing, it is also possible to easily splice and combine to form irregularly shaped molded fireworks such as W-shaped, V-shaped, left-leaning, left- and right-leaning shapes (e.g., Figure 11-14 (As shown).

[0037] Figure 12 and Figure 13 This reflects two types of W-shaped splicing and combination structures, which are described below:

[0038] Figure 12 In the middle, the five molding unit blocks are the same shape. There is a gap 10 between the central molding unit block and the molding unit blocks on both sides. When assembling, it may be necessary to insert wedge blocks into the gap 10 for fixation.

[0039] Figure 13In the middle, the centrally located molding unit block has a different shape from the molding unit blocks on both sides, and the cavity 2 constituting the spacer portion is larger to fill the gap 10, making it easier to assemble and fix, such as by adhesive. The shape and specifications of the tubular portion and its tubular cavity 1 can remain unchanged.

[0040] To facilitate the installation and connection of the lead wire in the molded unit block, in this example, the bottom surface of the molded unit block is provided with a lead wire mounting groove 4. Each tubular cavity 1 has a fire-passing hole 5 at its bottom end corresponding to the lead wire mounting groove 4. The lead wire mounting groove 4 also has a blind hole 6 extending deep into its bottom to prevent crossfire. After the lead wire (not shown in the figure) is inserted into the lead wire mounting groove 4, the groove is sealed with glue. The ignited lead wire passes through the fire-passing hole 5 to ignite the pyrotechnics in the tubular cavity 1. Due to the obstruction of the lead wire and the fluidity of the glue, the glue injected into the lead wire mounting groove 4 cannot completely fill the groove, especially the bottom. Therefore, the pressurized pyrotechnic gas ignited in the tubular cavity 1 will backflow through the fire-passing hole 5 and travel at high speed along the lead wire mounting groove 4. Its speed of travel is higher than the burning speed of the lead wire, disrupting the ignition rhythm controlled by the lead wire.

[0041] To prevent this phenomenon, an anti-crossfire blind hole 6 is provided. The opening radius of the anti-crossfire blind hole 6 is larger than that of the tank body and extends to the bottom of the tank (i.e., the bottom of the hole is lower than the bottom of the tank). The injected glue can easily enter and fill the anti-crossfire blind hole 6. After the glue solidifies, it forms a blockage point to prevent the crossfire of gunpowder gases.

[0042] In the example, the anti-fire blind hole 6 is provided between the fire-passing holes 5 of the two tubular cavities 1, such as... Figure 8 As shown, each tubular cavity 1 has two through holes 5 at its bottom. Therefore, two through holes 5 are distributed between the two anti-crossfire blind holes 6, and both through holes 5 belong to the same tubular cavity 1. This prevents the cross-flow of gunpowder gases, ensuring that the gunpowder in each tubular cavity 1 can only be ignited by the fuse at a set interval, thereby achieving the set ignition rhythm.

[0043] In other embodiments, the setting of the anti-crossfire blind hole 6 can also be set according to the ignition rhythm. For example, if the goal is to achieve simultaneous ignition and launch of the two tubular cavities 1 (commonly known as salvo), such as... Figure 9As shown, there are four through holes 5 of two tubular cavities 1 between the two anti-crossfire blind holes 6. A ignition transfer groove 7 is provided between two adjacent through holes 5. The ignition transfer groove 7 is distributed along the bottom of the lead wire mounting groove 4, extending deep into the bottom of the lead wire mounting groove 4 (i.e., the bottom of the ignition transfer groove is lower than the bottom of the lead wire mounting groove). Since the glue injected into the lead wire mounting groove 4 has difficulty entering the ignition transfer groove 7, the ignition transfer groove 7 remains unobstructed, allowing the ignition to be transferred between the four through holes 5 using the movement of gunpowder gases, ensuring the reliability of successful salvo firing. If more tubular cavities 1 need to be fired simultaneously, they can be set up according to the same principle, with more through holes 5 of tubular cavities 1 between the two anti-crossfire blind holes 6, and a ignition transfer groove 7 provided between two adjacent through holes 5.

[0044] In the example, all four sides of the molded unit block are sloped surfaces: in addition to the two wider sides being sloped surfaces 3, the two narrower, opposite left and right sides 8 are also sloped surfaces sloping outwards at the top, and the two sloped surfaces are symmetrically distributed left and right. This facilitates splicing into other combinations as needed. (e.g.) Figure 15 (As shown). In other embodiments, they can be spliced ​​into other combinations as needed. A lead wire guide groove 9 is provided on the right side 8. The bottom end of the lead wire guide groove 9 is connected to or near the bottom lead wire mounting groove 4 to facilitate the guide wire to the top of the molding unit block for ignition.

[0045] Compared with the "Fireworks Mold and Molding Device" disclosed in Chinese Patent Document CN218314204U under the same conditions, taking the actual production of fan-shaped combined molded fireworks as an example, the product of this utility model can produce 150,000 fireworks or more in 24 hours with one machine, and the scrap rate is about one-thousandth, which is basically the same as the scrap rate of vertical combined molded fireworks. In terms of economy and quality benefits, it better meets the actual needs of large-scale molding production.

[0046] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and describes these embodiments in detail with reference to the accompanying drawings to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is limited only to the claims and their full scope and equivalents, and not to the specific embodiments disclosed.

Claims

1. A combined shaped die pressed firework, characterized in that, It is composed of several molding unit blocks; each molding unit block consists of a central cavity and two side spacers; the cavity has at least one row of tubular cavities, and the axis of each tubular cavity is perpendicular to the horizontal plane; the two opposite outer surfaces of the cavity are provided with spacers, each spacer is composed of a cavity, the outer walls of the two cavities are inclined surfaces, the upper end of the inclined surfaces is inclined outward, and the two inclined surfaces are symmetrically distributed from left to right.

2. The combined shaped die firework of claim 1, wherein, The bottom surface of the molding unit block is provided with a lead wire mounting groove, and the bottom end of each tubular cavity is provided with a fire-passing hole. The lead wire mounting groove is provided with a fire-prevention blind hole that extends into the bottom of the lead wire mounting groove.

3. The combined shaped die firework of claim 2, wherein, Two or more tubular cavities are provided between two adjacent anti-crossfire blind holes, and a fire transmission groove is provided between the fire passage holes of two adjacent tubular cavities. The fire transmission groove is distributed along the lead wire mounting groove and extends into the bottom of the lead wire mounting groove.

4. A combined die-cut firework as claimed in any one of claims 1 to 3, wherein, The four sides of the molding unit block are all inclined surfaces, with the upper ends of the inclined surfaces tilting outwards, and the two opposite inclined surfaces are symmetrically distributed on the left and right.

5. A combined die-cut firework as claimed in any one of claims 1 to 3, wherein, The cavity constituting the spacer is provided with reinforcing ribs.

6. A combined die-cut firework as claimed in any one of claims 1 to 3, wherein, The lumen section has 1 to 4 rows of tubular cavities.

7. A combined die-cut firework as claimed in any one of claims 1 to 3, wherein, The lumen section is provided with 1 to 2 rows of tubular cavities.

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