Mould pressing unit block for combining special-shaped fireworks

Abstract

The invention discloses a combined special-shaped mould pressing firework which is formed by splicing and combining a plurality of mould pressing unit blocks. Each mould pressing unit block is composed of a pipe cavity part in the middle and spacing parts on the two sides; the tubular cavity part is provided with at least one row of tubular cavities, and the axes of the tubular cavities are perpendicular to the horizontal plane; spacing parts are correspondingly arranged on the two opposite outer side faces of the pipe cavity part, each spacing part is composed of a cavity body, the outer walls of the two cavity bodies are inclined faces, the upper ends of the inclined faces incline outwards, and the two inclined faces are distributed in a bilateral symmetry mode. Every two adjacent mould pressing unit blocks are correspondingly spliced through the corresponding slopes, and the mould pressing unit blocks can be conveniently spliced and combined to form mould pressing fireworks in special-shaped combination or other combination forms. And the integral one-time mould pressing processing difficulty of the mould pressing unit blocks is greatly reduced, so that the problem of difficulty in mould pressing production of the special-shaped combined fireworks is effectively solved.

Description

Technical Field

[0001] The invention relates to a special-shaped molded firework. Background Art

[0002] Combination fireworks are fireworks products composed of multiple single tubes. Traditional combination fireworks are assembled from multiple paper tubes, which have the disadvantages of numerous processes, low production efficiency, and low product standardization. In recent years, the molded combination fireworks have emerged. The slurry is molded into a molded body at one time through molding. Several tubular cavities are evenly distributed on the molded body in parallel. The structure and function of the tubular cavity are similar to the single tube of traditional combination fireworks. The upper end of the tubular cavity is open and the lower end is closed. The tubular cavity contains pyrotechnics and effect parts. For example, the Chinese invention patent document with publication number CN 102914223A discloses "a molded combination firework"; the Chinese invention patent document with publication number CN 101377395 A discloses "a molded firework outer tube, a firework shell and its production method".

[0003] At present, the molded combined fireworks are all upright combined fireworks. In the upright combined fireworks, the axis of the tubular cavity is perpendicular to the horizontal plane, and the rows of tubular cavities are arranged in parallel. In addition to the upright combined fireworks, there are also special-shaped combined fireworks in the existing products. The arrangement structure of the rows of tubular cavities in the special-shaped combined fireworks is like a fan shape. For example, refer to the "A primary-formed combined fireworks emitter with an internal fan-shaped structure device" disclosed in the Chinese patent document with the publication (announcement) number: CN201945257U. In addition, there are also W-shaped, V-shaped, left-tilted, right-tilted, five-finger-shaped, etc. Different from the upright type, there is a certain inclination angle (launch skew angle) between the axes of the rows of tubular cavities in the special-shaped combined fireworks. The lower ends of the rows of tubular cavities approach each other, and there is an inter-tube spacing between the upper ends of the adjacent two rows of tubular cavities. The oblique distribution of a large number of tubular cavities makes the molded production of special-shaped combined fireworks difficult: there are problems such as difficult stamping forming, inconvenient demoulding, and high scrap rate, and relatively complex die equipment is required. For example, in the "A fireworks die and a molding press device" disclosed in the Chinese patent document with the publication (announcement) number: CN218314204U, to complete the forming of a fan-shaped combined fireworks, three sets of dies on the left, middle, and right and their corresponding driving mechanisms need to work together. Not only is the die equipment complex and the manufacturing cost high, but also the production efficiency is low. The maximum production volume of one device in 24 hours is only about 40,000 rounds (one tubular cavity is one round), and the scrap rate is between eight and fifteen per thousand (the scrap rate of upright combined molded fireworks is generally not higher than one per thousand). Since the molded production of fireworks belongs to foam molding, not only hydraulic oil pressure needs to be supplied to meet the molding needs of the die, but also heat-conducting oil for heating (such as a boiler) and pressurization (such as a pressurization pump group) needs to be supplied to meet the heating needs of the die and the material. It is a large-scale continuous production mode that requires a large amount of basic supporting and the cooperation of multiple departments of personnel. Such a production volume cannot meet the actual economic benefit needs of this production mode, and at the same time, the too-high scrap rate damages the quality benefit of the product, such as resulting in a high quality inspection cost. Therefore, the problem of difficult molded production of special-shaped combined fireworks has not been solved. Summary of the Invention

[0004] To solve the above drawbacks, the technical problem to be solved by the present invention is to provide a molded unit block for combined special-shaped fireworks, which effectively solves the problem of difficult molded production of special-shaped combined fireworks. To solve the above technical problem, the technical solution adopted by the present invention is that a molded unit block for combined special-shaped fireworks is characterized in that each molded unit block is composed of a central tube cavity part and two side spacer parts; at least one row of tubular cavities is provided in the tube cavity part, and the axes of the tubular cavities are all perpendicular to the horizontal plane; spacer parts are correspondingly arranged on two opposite outer side faces of the tube cavity part, each spacer part is composed of a cavity body, the outer walls of the two cavity bodies are inclined planes, the upper ends of the inclined planes are inclined outwards, and the two inclined planes are symmetrically distributed left and right.

[0005] The beneficial effects of the present invention are as follows. By adopting the above technical solution, the lumens of the lumen part of the molded unit block are in a state where the axes are perpendicular to the horizontal plane. Through the spacer parts with inclined outer walls arranged on both sides of the lumen part, two adjacent molded unit blocks are correspondingly spliced through the inclined surfaces, and it is convenient to splice and combine to form special-shaped combined molded fireworks such as fan-shaped, W-shaped, V-shaped, left-inclined, right-inclined, five-finger-shaped, etc. It can also be spliced into other combined forms according to needs; it avoids problems such as difficult stamping forming, inconvenient demolding, and high rejection rate caused by a large number of tubular cavities being obliquely distributed; therefore, the overall one-time molding processing difficulty of the molded unit block is greatly reduced, effectively solving the problem of difficult molding production of special-shaped combined fireworks.

[0006] Preferably, a lead wire installation groove is provided on the bottom surface of the molded unit block. Fire-passing through holes are provided at the bottom ends of the lead wire installation groove corresponding to each tubular cavity, and anti-fire-spreading blind holes are provided that penetrate into the bottom of the lead wire installation groove. Further, there are two or more tubular cavities between two adjacent anti-fire-spreading blind holes, and a fire-transfer groove is provided between the fire-passing through holes of two adjacent tubular cavities. The fire-transfer groove is distributed along the lead wire installation groove and penetrates into the bottom of the lead wire installation groove. Ensure the reliability of successful salvo.

[0007] Preferably, the four side surfaces of the molded unit block are all inclined surfaces, the upper ends of the inclined surfaces are inclined outward, and the two opposite inclined surfaces are symmetrically distributed left and right. It is convenient to splice into other combined forms according to needs.

[0008] Preferably, reinforcing ribs are provided in the cavity body constituting the spacer part. To enhance the structural strength.

[0009] Preferably, two adjacent molded unit blocks are correspondingly spliced and combined through the inclined surfaces to form a fan shape.

[0010] Preferably, the lumen part is provided with 1 to 4 rows of tubular cavities. Especially 1 to 2 rows.

[0011] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously.

[0012] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, all the technical and scientific terms have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0013] It should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation to the present invention.

[0014] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0015] In the present invention, unless otherwise clearly specified and limited, terms such as "mounted", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0017] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate 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 intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this article are only for the purpose of illustration and do not represent the only implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective structural view of the molding unit block (first perspective);

[0019] Figure 2 is a perspective structural view of the molding unit block (second perspective);

[0020] Figure 3 is a front structural view of the molding unit block;

[0021] Figure 4 is a left structural view of the molding unit block;

[0022] Figure 5 is a right structural view of the molding unit block;

[0023] Figure 6 is a top structural view of the molding unit block;

[0024] Figure 7 is a bottom structural view of the molding unit block;

[0025] Figure 8 is a partial enlarged bottom structural view of the molding unit block (without overfire groove);

[0026] Figure 9 is a partial enlarged bottom structural view of the molding unit block (with overfire groove);

[0027] Figure 10 is a schematic view of the fan-shaped splicing combination structure of several molding unit blocks;

[0028] Figure 11 is a schematic view of the V-shaped splicing combination structure of several molding unit blocks;

[0029] Figure 12 is a schematic view of the first W-shaped splicing combination structure of several molding unit blocks;

[0030] Figure 13 is a schematic view of the second W-shaped splicing combination structure of several molding unit blocks;

[0031] Figure 14It is a schematic diagram of a structure of a plurality of molded unit blocks spliced ​​in a left-leaning and right-leaning shape;

[0032] Figure 15 It is a schematic diagram of other splicing and combination structures of several molded unit blocks. DETAILED DESCRIPTION

[0033] See attached Figure 1-14 , reflecting a specific structure of the present invention. The molded unit block for assembling special-shaped fireworks is composed of a central tube cavity part and spacer parts on both sides.

[0034] In the example, the tubular cavity portion is provided with twenty tubular cavities 1, which are distributed in the form of ten / row×two rows, the axes of the tubular cavities 1 are perpendicular to the horizontal plane, and the axes of the two rows of tubular cavities 1 are parallel and arranged side by side. In other embodiments, the number of rows of tubular cavities 1 in the tubular cavity portion can be 1 to 4 rows or more, and the axes of the tubular cavities 1 in each row are parallel and arranged side by side.

[0035] The two opposite outer sides of the tube cavity are provided with spacers, each spacer is composed of a cavity 2, the outer walls of the two cavities 2 are inclined planes 3, the upper ends of the inclined planes 3 are inclined outward, and the two inclined planes 3 are symmetrically distributed. In the example, the cavity 2 constituting the spacer is provided with reinforcing ribs 201 to enhance the structural strength.

[0036] By adopting the above technical solution, each tubular cavity 1 of the tubular cavity part of the molded unit block is in a state where the axis is perpendicular to the horizontal plane, and two adjacent molded unit blocks are correspondingly spliced ​​through the inclined surface 3, and can be conveniently spliced ​​and combined to form a fan shape (such as Figure 10 The upper end surface of the assembly is in a relatively smooth and continuous arc shape, the emission deflection angle of the fireworks effect in the air is evenly distributed, and the firing effect is good.

[0037] In other embodiments, by correspondingly splicing the inclined surface 3, it is also possible to conveniently splice and combine to form W-shaped, V-shaped, left-leaning, left-leaning, right-leaning and other special-shaped combined molded fireworks (such as Figures 11-14 shown).

[0038] Figure 12 and Figure 13 It reflects two W-shaped splicing combination structures, which are described as follows:

[0039] Figure 12 In the figure, the five molded unit blocks have the same shape, and there is a gap 10 between the molded unit block in the middle and the molded unit blocks on both sides. When assembling, it may be necessary to insert a wedge block into the gap 10 for fixing;

[0040] Figure 13Among them, the centrally located molded unit block has a different shape from the molded unit blocks on both sides, and the cavity body 2 forming the spacer part is larger to fill the gap 10, making it more convenient for combination and fixation, such as gluing. The shape specifications of the lumen part and its tubular lumen 1 can remain unchanged.

[0041] To facilitate the lead installation and connection of the molded unit block for fire transmission. In the example, a lead installation groove 4 is provided on the bottom surface of the molded unit block. The lead installation groove 4 is provided with a fire-passing through hole 5 corresponding to the bottom end of each tubular lumen 1, and the lead installation groove 4 is provided with an anti-fire-gas-leakage blind hole 6 that penetrates into the bottom of the lead installation groove 4. After the lead (not shown in the figure) is loaded into the lead installation groove 4, the groove body is sealed with glue. The ignited lead transmits fire to the inside of the tubular lumen 1 through the fire-passing through hole 5 to ignite the pyrotechnic composition. Due to problems such as the obstruction of the lead and the fluidity of the glue, the glue injected into the lead installation groove 4 cannot completely fill the groove body, especially the bottom of the groove body. Therefore, the pressure gunpowder gas ignited inside the tubular lumen 1 will backflow from the fire-passing through hole 5 and travel at high speed along the lead installation groove 4, and its traveling speed is higher than the burning speed of the lead, resulting in the disruption of the firing rhythm controlled by the lead.

[0042] To prevent this phenomenon from occurring, the anti-fire-gas-leakage blind hole 6 is provided. The opening radius of the anti-fire-gas-leakage blind hole 6 is larger than that of the groove body and penetrates into the bottom of the groove (i.e., the bottom of the hole is lower than the bottom of the groove). The injected glue can easily enter and fill the anti-fire-gas-leakage blind hole 6. After the glue solidifies, a blocking point is formed to prevent the travel of the gunpowder gas.

[0043] In the example, the anti-fire-gas-leakage blind hole 6 is provided between the fire-passing through holes 5 of two tubular lumens 1, such as Figure 8 shown. Two fire-passing through holes 5 are provided at the bottom end of each tubular lumen 1. Therefore, two fire-passing through holes 5 are distributed between two anti-fire-gas-leakage blind holes 6, and both two fire-passing through holes 5 belong to the same tubular lumen 1. Preventing the travel of the gunpowder gas enables the gunpowder in each tubular lumen 1 to be ignited by the lead at a set interval, thereby realizing the set firing rhythm.

[0044] In other embodiments, the setting of the anti-fire-gas-leakage blind hole 6 can also be set according to the firing rhythm. For example, if two simultaneous ignitions and launches (commonly known as salvo) of two tubular lumens 1 are to be achieved, such as Figure 9As shown, there are four fire - passing through holes 5 of two tubular cavities 1 between two anti - cross - fire blind holes 6. A fire - transmitting groove 7 is provided between two adjacent fire - passing through holes 5. The fire - transmitting groove 7 is distributed along the bottom of the lead - wire installation groove 4, and the fire - transmitting groove 7 penetrates into the bottom of the lead - wire installation groove 4 (that is, the bottom of the fire - transmitting groove is lower than the bottom of the lead - wire installation groove). Since the glue injected into the lead - wire installation groove 4 is difficult to enter the fire - transmitting groove 7, the fire - transmitting groove 7 remains unobstructed, and can transmit fire between the four fire - passing through holes 5 by the seepage of gunpowder gas, ensuring the reliability of successful salvo. If more tubular cavities 1 need to salvo, it can also be set according to the same principle, that is, there are fire - passing through holes 5 of more tubular cavities 1 between two anti - cross - fire blind holes 6, and a fire - transmitting groove 7 is provided between two adjacent fire - passing through holes 5.

[0045] In the example, the four side surfaces of the molded unit block are all inclined surfaces: except for the two relatively wide side surfaces which are the inclined surfaces 3, the two relatively narrow left and right side surfaces 8 are also inclined surfaces with the upper ends inclined outwards, and the two inclined surfaces are symmetrically distributed left and right. It is convenient to be spliced into other combined forms according to needs. (As Figure 15 shown). In other embodiments, it can also be spliced into other combined forms according to needs. A lead - wire outlet groove 9 is provided on the right side surface 8. The bottom end of the lead - wire outlet groove 9 communicates with or is close to the lead - wire installation groove 4 at the bottom to facilitate leading out the lead - wire above the molded unit block for ignition.

[0046] As can be seen from the above, by adopting the above - mentioned technical solution, problems such as difficult stamping forming, inconvenient demolding, and high rejection rate caused by the oblique distribution of a large number of tubular cavities are avoided; therefore, the overall one - time molding processing difficulty of the molded unit block is greatly reduced, effectively solving the problem of difficult molding production of special - shaped combined fireworks.

[0047] Compared with the "a fireworks mold and molding device" disclosed in the Chinese patent document CN218314204U under the same conditions, taking the actual production of fan - shaped combined molded fireworks as an example, the production volume of the product of the present invention per device in 24 hours can reach 150,000 rounds or more, and the rejection rate is about one - thousandth, which is basically the same as that of the upright - type combined molded fireworks. The economic and quality benefits better meet the actual needs of large - scale molding production.

[0048] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and combines the accompanying drawings to specifically describe these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well 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 connotation of the present invention. Therefore, the present invention is only limited by the claims and their full scope and equivalents, and is not limited by the specific embodiments disclosed.

Claims

1. A molding unit block for combining special-shaped fireworks, characterized in that Each molded unit block consists of a central lumen part and spacer parts on both sides; the lumen part is provided with at least one row of tubular cavities, and the axes of the tubular cavities are all perpendicular to the horizontal plane; spacer parts are correspondingly arranged on two opposite outer side faces of the lumen part, each spacer part is composed of a cavity body, the outer walls of the two cavity bodies are inclined planes, the upper ends of the inclined planes incline outwards, and the two inclined planes are symmetrically distributed left and right.

2. The molded unit block for combined special-shaped fireworks according to claim 1, characterized in that, The bottom surface of the molded unit block is provided with a lead installation groove, the lead installation groove is provided with a fire-through hole corresponding to the bottom end of each tubular cavity, and the lead installation groove is provided with a fire-preventing blind hole that penetrates deep into the bottom of the lead installation groove.

3. The molded unit block for combined special-shaped fireworks according to claim 2, wherein There are two or more tubular cavities between two adjacent fire-preventing blind holes, and a fire-transfer groove is provided between the fire-through holes of two adjacent tubular cavities. The fire-transfer groove is distributed along the lead installation groove and penetrates deep into the bottom of the lead installation groove.

4. A die pressing unit block for combining special-shaped fireworks according to any one of claims 1-3, characterized in that, The four side faces of the molded unit block are all inclined planes, the upper ends of the inclined planes incline outwards, and the two opposite inclined planes are respectively symmetrically distributed left and right.

5. A die - pressing unit block for combining special - shaped fireworks according to any one of claims 1 - 3, characterized in that, Reinforcing ribs are provided in the cavity bodies constituting the spacer parts.

6. A molded unit block for combining special-shaped fireworks according to any one of claims 1-3, characterized in that, Two adjacent molded unit blocks are correspondingly spliced and combined through the inclined planes to form a fan shape.

7. The molded unit block for combining special-shaped fireworks according to claim 6, characterized in that, The lumen part is provided with 1 to 4 rows of tubular cavities.

8. The molded unit block for combining special-shaped fireworks according to claim 6, characterized in that, The lumen part is provided with 1 to 2 rows of tubular cavities.

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