Non-rotary body pyrotechnic device pressing device

Abstract

A non-rotary body pyrotechnics pressing device is used for generating pyrotechnics; the device comprises a first mold which is a columnar cavity structure, a first cavity with upper and lower openings and a side opening is formed in the first mold, the top and bottom of the first mold are provided with a plurality of positioning pins; a second mold which is a columnar solid structure, the top and bottom of the second mold are provided with an expansion platform, and each expansion platform is provided with a plurality of engagement parts corresponding to the positioning pins; the first mold and the second mold are combined through the corresponding positioning pins and engagement parts, the side opening of the first mold is covered by the second mold, and the first cavity is a columnar cavity with only upper and lower openings; an upper punch and a lower punch. The safety problem in the preparation process is solved, the density of the pyrotechnics is improved, the work efficiency is improved, and the preparation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold design and processing, and in particular to a non-rotating pyrotechnic pressing device. Background Technology

[0002] In some pyrotechnic products, the space used to house important unit components (the endpoint of the destructive action) exhibits various non-rotational structures. In this case, such non-rotational structures can be approximated as "flat-cut types." How to manufacture such non-rotational structures has become an urgent problem to be solved.

[0003] There are two main solutions to this problem in China: The first is to use a cast pyrotechnic device. After the shell is formed, the pyrotechnic device is heated to a flowable molten state and injected into the shell. Then, pressure and cooling are applied to solidify the pyrotechnic device within the shell, forming a non-rotating body. This method is limited by the fact that many types of pyrotechnic devices are not suitable for melt casting due to their high heat sensitivity, resulting in a limited selection of pyrotechnic devices and severely restricting design diversity. Furthermore, because it is a cast method, the pyrotechnic device is subjected to relatively low pressure, resulting in a lower density and weaker destructive power. The second method is to use a rotating body for pressing and then milling the pyrotechnic device using remotely operated equipment in an explosion-proof room. This method is gradually being phased out due to increasingly stringent safety management and efficiency concerns. Therefore, the preparation of a pressing mold for non-rotating pyrotechnic devices, which involves one-piece pressing, can greatly increase the variety of pyrotechnic devices produced and improve work efficiency.

[0004] How to use non-rotational compression molding dies to form pyrotechnic products in one step, avoiding the safety risks associated with secondary processing and casting, and improving work efficiency; at the same time, how to solve the problem of non-rotational molds being prone to deformation during processing, and the stress concentration points that can easily form at irregular points during compression molding, igniting pyrotechnic products and damaging the mold, through structural design, still remains a challenge. Utility Model Content

[0005] The purpose of this invention is to provide a non-rotating pyrotechnic pressing device, which has the advantages of improving working efficiency and reducing manufacturing costs.

[0006] To achieve the above objectives, this utility model provides a non-rotating pyrotechnic pressing device for generating pyrotechnics. The device includes: a first mold, which is a cylindrical cavity structure with openings at the top, bottom, and sides; a second mold, which is a cylindrical solid structure with an extension platform at the top and bottom; and a plurality of engaging parts corresponding to the positioning pins on each extension platform. When the first mold and the second mold are combined in a state where the positioning pins and engaging parts correspond to each other, the side openings of the first mold are covered by the second mold, and the first cavity is a cylindrical cavity with only top and bottom openings. An upper punch and a lower punch are also provided; in operation, the upper punch and the lower punch compress the pyrotechnics within the first cavity.

[0007] Preferably, the device further includes: an external mold cavity component, the inner wall of which forms an inner cavity; in the working state, the first mold and the second mold in the combined state are disposed in the inner cavity, the upper punch is disposed in the first cavity, and the top of the lower punch is disposed in the first cavity, and the lower part is disposed in the inner cavity.

[0008] Preferably, a reinforcing rib is provided at both the top and bottom of the first mold; each of the extension platforms has a mating groove corresponding to the reinforcing rib, so that the extension platform and the reinforcing rib are fitted together.

[0009] Preferably, the inner cavity includes: an upper inner cavity, in which, in the working state, the first mold and the second mold in the combined state are disposed in the upper inner cavity, and the inner wall of the outer component of the mold cavity is fitted to the outer wall of the first mold / the outer wall of the second mold, and the upper punch is disposed in the first cavity; a middle inner cavity, located below the upper inner cavity, and the middle inner cavity is connected to the upper inner cavity; and a lower inner cavity, located below the middle inner cavity, and the lower inner cavity is connected to the middle inner cavity; in the working state, the lower part of the lower punch passes through the middle inner cavity and is disposed in the lower inner cavity, and the top of the lower punch is disposed in the first cavity.

[0010] Preferably, a pressure monitoring hole is provided through the interior of the upper punch to monitor the pressure when the pyrotechnic material is squeezed.

[0011] Preferably, the outer wall of the upper punch is in contact with the inner wall of the first mold and the second mold; the outer wall of the lower punch is in contact with the inner wall of the external component of the mold cavity, the inner wall of the first mold and the second mold.

[0012] Preferably, the first mold further includes: a plurality of outer wall reinforcing modules disposed on the outer wall of the first mold; the inner wall of the external component of the mold cavity is provided with a plurality of adaptation parts corresponding one to one of the outer wall reinforcing modules, and the outer wall reinforcing modules and the adaptation parts correspond one to one to achieve a stable connection between the first mold and the external component of the mold cavity.

[0013] Preferably, the first mold is in the shape of a 180° arc, the inner wall of the first mold is a semi-circular arc surface, the second mold is composed of a 180° arc surface and a horizontal surface, and the arc surface matches the first mold.

[0014] Preferably, the engagement portion is a rounded groove; the positioning pin is interference-fitted with the engagement portion.

[0015] In summary, compared with the prior art, the non-rotating pyrotechnic pressing device provided by this utility model has the following beneficial effects:

[0016] First, the non-rotating pyrotechnic pressing device proposed in this utility model solves the safety problem in the preparation process and improves the density of pyrotechnics.

[0017] Secondly, the non-rotating pyrotechnic pressing device proposed in this utility model promotes the advancement of spatial design schemes for important unit components, while also improving work efficiency and reducing manufacturing costs.

[0018] Third, the non-rotating pyrotechnic pressing device proposed in this utility model transforms the non-rotating mold cavity into a circular assembly, and solves the problem of irregular cross-section pressing deformation by constraining the external components of the mold cavity, thereby improving the molding safety.

[0019] Fourth, the non-rotating pyrotechnic pressing device proposed in this utility model achieves self-stabilization of the mold cavity through mechanical interlocking, is suitable for automated production, requires no additional fixtures, and simplifies the operation process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first mold of a non-rotating pyrotechnic pressing device proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the second mold of a non-rotating pyrotechnic pressing device proposed in this utility model.

[0022] Figure 3 This is a schematic diagram of the first and second molds in the combined state of a non-rotating pyrotechnic pressing device proposed in this utility model.

[0023] Figure 4 This is a schematic diagram of the external components of the mold cavity of a non-rotating pyrotechnic pressing device proposed in this utility model.

[0024] Figure 5 This is a schematic diagram of the assembly of the first and second molds of the non-rotating pyrotechnic pressing device proposed in this utility model, which are integrally embedded in the upper inner cavity of the external component 5.

[0025] Figure 6 (a) is a perspective view of the upper punch of a non-rotating pyrotechnic pressing device proposed in this utility model.

[0026] Figure 6 (b) is a schematic diagram of the upper punch of a non-rotating pyrotechnic pressing device proposed in this utility model.

[0027] Figure 7 (a) is a schematic diagram of the lower punch of a non-rotating pyrotechnic pressing device proposed in this utility model.

[0028] Figure 7 (b) is a schematic diagram of the lower punch of a non-rotating pyrotechnic pressing device proposed in this utility model.

[0029] Figure 8 This is a schematic diagram of the operation of a non-rotating pyrotechnic pressing device proposed in this utility model.

[0030] Figure label:

[0031] 1-Upper punch, 2-First mold, 3-Second mold, 4-Pressure monitoring hole, 5-External component of mold cavity, 6-Lower punch, 7-Reinforcing rib, 8-Positioning pin, 9-First cavity, 10-Interlocking part, 11-Extension platform, 12-Upper inner cavity, 13-Lower inner cavity, 14-Intermediate inner cavity. Detailed Implementation

[0032] The following will be combined with the appendix in the embodiments of this utility model. Figures 1-8 The technical solutions, structural features, objectives and effects achieved in the embodiments of this utility model are described in detail.

[0033] It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions. They are only used to facilitate and clarify the illustration of the embodiments of this utility model, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationship, or adjustments to the size should still fall within the scope of the technical content disclosed in this utility model, provided that they do not affect the effects and objectives that this utility model can produce.

[0034] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only the expressly listed elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0035] This invention proposes a non-rotational pyrotechnic pressing device. The non-rotational body is a geometric body whose structural shape cannot be formed by rotation along a single axis, and whose cross-sectional shape has no rotational symmetry along the axial direction. Examples include prisms (triangular prisms, cuboids), pyramids, irregular polyhedra, etc., whose shape may be composed of multiple planes, curved surfaces, or irregular surfaces.

[0036] The pyrotechnic device is a device containing explosives or other energetic materials that can trigger a chemical reaction through external stimuli (such as heat, electricity, or mechanical energy) to generate energy (such as detonation waves, flames, gases, or mechanical work).

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 5 as well as Figure 8 As shown, therefore, this utility model proposes a non-rotating pyrotechnic pressing device for generating pyrotechnic products; the device includes:

[0038] The first mold 2 is a columnar cavity structure, which forms a first cavity 9 with openings at the top, bottom and sides. The top and bottom of the first mold 2 are provided with several positioning pins 8.

[0039] The second mold 3 is a columnar solid structure. An extension platform 11 is provided at the top and bottom of the second mold 3. Each of the extension platforms 11 is provided with a plurality of engaging parts 10 corresponding to the positioning pins 8. That is, the function of the positioning pins 8 and the engaging parts 10 is to achieve precise positioning when the first mold 2 and the second mold 3 are spliced ​​together.

[0040] When the first mold 2 and the second mold 3 are combined with the engagement part 10 in a one-to-one correspondence through the positioning pin 8, the first cavity 9 is a cylindrical cavity with only the top and bottom openings; at this time, the opening on the side of the first mold 2 is covered by the second mold 3.

[0041] In the working state, the upper punch 1 and the lower punch 6 squeeze the pyrotechnic material in the first cavity 9.

[0042] The external component 5 of the mold cavity forms an inner cavity on its inner wall. In the working state, the first mold 2 and the second mold 3 in the combined state are disposed in the inner cavity, the upper punch 1 is disposed in the first cavity 9, and the top of the lower punch 6 is disposed in the first cavity 9, and the lower part is disposed in the inner cavity.

[0043] In a preferred embodiment, a reinforcing rib 7 is provided at both the top and bottom of the first mold 2 to enhance its compressive strength; at this time, the extension platform 11 will be provided accordingly, and each extension platform 11 has a mating groove corresponding to the reinforcing rib 7, so that the extension platform 11 and the reinforcing rib 7 are fitted together to ensure its stability.

[0044] like Figure 4 As shown, in a specific embodiment, the inner cavity includes:

[0045] In the upper inner cavity 12, in the working state, the first mold 2 and the second mold 3 in the combined state are set in the upper inner cavity 12. The inner wall of the mold cavity external component 5 is fitted with the outer wall of the first mold 2 / the outer wall of the second mold 3. The upper punch 1 is set in the first cavity 9.

[0046] The intermediate inner cavity 14 is located below the upper inner cavity 12, and the intermediate inner cavity 14 is connected to the upper inner cavity 12;

[0047] The lower inner cavity 13 is located below the middle inner cavity 14, and the lower inner cavity 13 is connected to the middle inner cavity 14. In the working state, the lower part of the lower punch 6 passes through the middle inner cavity 14 and is disposed in the lower inner cavity 13, and the top of the lower punch 6 is disposed in the first cavity 9.

[0048] In order to better realize the extrusion of the pyrotechnic material by the upper punch 1 and the lower punch 6 in the first cavity 9, a pressure monitoring hole 4 is provided through the upper punch 1 to monitor the pressure when the pyrotechnic material is extruded, so as to ensure safe operation.

[0049] like Figure 8 As shown, in a preferred embodiment, the outer wall of the upper punch 1 is in contact with the inner wall of the first mold 2 and the second mold 3; the outer wall of the lower punch 6 is in contact with the inner wall of the external mold cavity component 5, the inner wall of the first mold 2, and the inner wall of the second mold 3. This achieves sealing during extrusion, ensuring both safety and efficiency.

[0050] To enhance the stability of the first mold 2 and the external component 5 of the mold cavity, the first mold 2 further includes: a plurality of outer wall reinforcing modules (not shown in the figure) disposed on the outer wall of the first mold 2; the inner wall of the external component 5 of the mold cavity is provided with a plurality of adaptation parts corresponding one to one of the outer wall reinforcing modules, and the outer wall reinforcing modules correspond one to one with the adaptation parts to achieve a stable connection between the first mold 2 and the external component 5 of the mold cavity.

[0051] The outer wall reinforcement module can be implemented, for example, by axially providing reinforcing ribs on the outer wall of the first mold 2 or by providing external protrusions on the outer wall of the first mold 2. In this case, the external component 5 of the mold cavity should have corresponding grooves provided on its inner wall to achieve a stable combination of the first mold 2 and the external component 5 of the mold cavity.

[0052] The following are specific embodiments, such as Figures 1-8 As shown, this embodiment adopts a modular combination structure. The first mold 2 is 180° arc-shaped, and the inner wall of the first mold 2 is a semi-circular arc surface. A reinforcing rib 7 is provided at both the top and bottom of the first mold 2 to enhance its compressive strength. A positioning pin 8 is provided at each end of the top and bottom of the first mold 2. The material of the first mold 2 is high-strength alloy steel (such as 42CrMo), which is quenched and tempered to improve its mechanical properties and meet the requirements of high-pressure pressing. In addition, three reinforcing ribs are axially arranged on the outer wall of the first mold 2.

[0053] The second mold 3 consists of a 180° arc surface and a horizontal surface (i.e., the opening on the side of the first mold 2 is covered by the second mold 3). The flat surface corresponds to the "flat tangent" surface of a non-rotating body, and the arc surface matches the first mold 2. An extension platform 11 is provided at both the top and bottom of the second mold 3. Each extension platform 11 has several engaging portions 10 at both ends, corresponding one-to-one with the positioning pins 8. In this embodiment, the engaging portions 10 are in the form of rounded corner grooves, which helps to eliminate the risk of stress concentration during pressing. Furthermore, the positioning pins 8 and the engaging portions 10 are interference-fitted to ensure dimensional accuracy after the first mold 2 and the second mold 3 are joined.

[0054] Furthermore, the first cavity 9 formed by the first mold 2 and the second mold 3 is a non-rotating cylindrical structure.

[0055] The inner diameter of the external component 5 of the mold cavity is precisely matched with the first mold 2 and the second mold 3 in the combined state. Several annular grooves are opened on the inner wall of the external component 5 of the mold cavity, which engage with the reinforcing ribs of the first mold 2 one by one. The deformation of the component is constrained by friction, forming a self-stabilizing mold cavity structure. The material of the external component 5 of the mold cavity is surface hardened to improve wear resistance and service life.

[0056] The extrusion surfaces of both the upper punch 1 and the lower punch 6 are "flat-cut" arc surfaces that match the upper inner cavity 12, the middle inner cavity 14, the lower inner cavity 13, and the first cavity 9 of the external mold cavity component 5; for example Figure 6 (a) and Figure 6 As shown in (b), the upper punch 1 is equipped with a pressure monitoring hole 4, and the lower punch 6 is connected to a hydraulic demolding mechanism. Figure 7 (a) and Figure 7 As shown in (b), in this embodiment, the upper punch 1 adopts a cylindrical structure adapted to the upper inner cavity 12, and the lower punch 6 adopts a "T" shaped structure.

[0057] In addition, in the preferred embodiment, the first mold 2, the second mold 3, the external component of the mold cavity 5, the upper punch 1 and the lower punch 6 are all made of high-strength alloy steel, and the tensile strength is ≥1000MPa after heat treatment; the surface hardening treatment of the external component of the mold cavity 5 increases the hardness to HV900+, and the wear resistance life exceeds 5000 cycles.

[0058] In addition, pressure and temperature sensors are installed on five key parts of the external components of the mold cavity to monitor the pressing parameters in real time and automatically adjust them when abnormalities occur, so as to prevent the pyrotechnics from igniting due to stress or temperature rise and ensure safety.

[0059] In response, there is also a method for pressing non-rotating pyrotechnic items, which employs the aforementioned non-rotating pyrotechnic item pressing device; the method includes:

[0060] Step S1: Assemble the first mold 2 and the second mold 3, and embed them as a whole into the upper inner cavity 12 of the outer component 5 of the mold cavity;

[0061] As mentioned above, the inner diameter of the external component 5 of the mold cavity is precisely matched with the first mold 2 and the second mold 3 in the combined state. The inner wall of the external component 5 of the mold cavity has an annular groove that engages with the reinforcing rib of the first mold 2. The deformation of the component is constrained by friction, forming a self-stabilizing mold cavity structure. The self-stabilizing mold cavity is formed by mechanical engagement, without the need for additional clamps, ensuring structural stability during pressing.

[0062] Step S2: Insert the lower punch 6, the pyrotechnic material, and the upper punch 1 downwards in sequence, and apply downward pressure to the upper punch 1.

[0063] As mentioned above, at this time, the extrusion surfaces of the upper punch 1 and the lower punch 6 are both "flat-cut" arc surfaces that match the upper inner cavity 12, the middle inner cavity 14, the lower inner cavity 13 and the first cavity 9 of the external component 5 of the mold cavity. The upper punch 1 adopts a cylindrical structure that is adapted to the upper inner cavity 12, and the lower punch 6 adopts a "T" shaped structure.

[0064] Step S3: The upper punch 1 releases pressure, and the lower punch 6 applies upward pressure to push the product out of the first cavity 9;

[0065] As mentioned earlier, when the upper punch 1 is depressurized, the lower punch 6 pushes out the product. After the product is taken away by the robotic arm, the aforementioned components are automatically reset to begin the next round of pyrotechnic product production.

[0066] In a specific embodiment, in step S2, the upward punch 1 applies a downward pressure of 150-250 MPa and holds the pressure for 1-2 minutes. Using the aforementioned settings, the raw material can be compacted, achieving a density of over 90% of the theoretical value.

[0067] In addition, the extrusion surfaces of the upper punch 1 and the lower punch 6 are precision ground to avoid stress concentration during material flow. The extrusion surfaces are ground by a CNC grinder to a flatness of ≤0.01mm, with smooth transitions; the inner wall of the external component 5 of the mold cavity is polished to Ra0.8 or less to reduce demolding resistance.

[0068] To better control the extrusion force of the upper punch 1 and the lower punch 6, the upper punch 1 and the lower punch 6 adopt hydraulic drive and adjustable ejector pin design to adapt to different sizes of pyrotechnic products. The demolding force is controlled in a closed loop to ensure the integrity of the molded products and the pass rate is ≥99.5%.

[0069] The specific implementation method will be described below:

[0070] like Figure 8 As shown, the inner walls of the first mold 2, the second mold 3, and the outer component 5 of the mold cavity are pre-assembled into one unit before pressing. After the inner wall of the first mold 2 is placed into the outer component 5 of the mold cavity, the first mold 2 will form an outward deformation trend during the pressing of the pyrotechnic product. Due to the corresponding constraints provided by the outer component 5 of the mold cavity, friction will be generated inside. Therefore, the assembled "flat-cut" non-rotating mold cavity (assembling the first mold 2 and the second mold 3 and embedding the whole into the upper inner cavity 12 of the outer component 5 of the mold cavity) has self-stability and can be regarded as a whole when used.

[0071] During operation, the "flat-cut" non-rotating mold cavity is placed on the hydraulic press, and the lower punch 6, pyrotechnic material, and upper punch 1 are placed in sequence. After the personnel leave, the hydraulic press applies pressure to the upper punch 1 from top to bottom, pushing the upper punch 1 downward to squeeze the pyrotechnic material. The pyrotechnic material itself contains a certain amount of binder. Under the action of pressure, the loose pyrotechnic material gradually becomes a product with the characteristics of a "flat-cut" non-rotating body.

[0072] After pressing is completed, the pressure at the top of the hydraulic press is released, and the hydraulic press applies pressure to the lower punch 6 from bottom to top, pushing the upper punch 1, the product and the lower punch 6 upward until the upper punch 1 and the product are completely separated from the "flat-cut" non-rotating mold cavity. At this time, the hydraulic press remains stationary, and personnel or robotic arms remove the upper punch 1 and the product. The hydraulic press is then reset, and the lower punch 6 falls back to its lowest position. The above is a specific implementation method.

[0073] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A non-rotating pyrotechnic pressing device for producing pyrotechnic items; characterized in that, The device includes: The first mold (2) is a columnar cavity structure, and a first cavity (9) with openings at the top, bottom and sides is formed inside it. Several positioning pins (8) are provided at the top and bottom of the first mold (2). The second mold (3) is a columnar solid structure. An extension platform (11) is provided at the top and bottom of the second mold (3). Each of the extension platforms (11) is provided with a number of engagement parts (10) that correspond one-to-one with the positioning pins (8). When the first mold (2) and the second mold (3) are combined with the interlocking part (10) one by one through the positioning pin (8), the side opening of the first mold (2) is covered by the second mold (3), and the first cavity (9) is a columnar cavity with only the top and bottom openings; In the working state, the upper punch (1) and the lower punch (6) squeeze the pyrotechnic material in the first cavity (9).

2. The non-rotating pyrotechnic pressing device according to claim 1, characterized in that, The device further includes: The outer cavity component (5) has an inner cavity formed on its inner wall. In the working state, the first mold (2) and the second mold (3) in the combined state are located in the inner cavity. The upper punch (1) is located in the first cavity (9). The top of the lower punch (6) is located in the first cavity (9), and the lower part is located in the inner cavity.

3. The non-rotating pyrotechnic pressing device according to claim 2, characterized in that, The first mold (2) is provided with a reinforcing rib (7) at both the top and bottom; each of the extension platforms (11) has a mating groove corresponding to the reinforcing rib (7), so that the extension platform (11) and the reinforcing rib (7) are fitted together.

4. The non-rotating pyrotechnic pressing device according to claim 3, characterized in that, The internal cavity includes: In the upper inner cavity (12), in the working state, the first mold (2) and the second mold (3) in the combined state are set in the upper inner cavity (12). The inner wall of the mold cavity external component (5) is fitted with the outer wall of the first mold (2) / the outer wall of the second mold (3). The upper punch (1) is set in the first cavity (9). The intermediate inner cavity (14) is located below the upper inner cavity (12), and the intermediate inner cavity (14) is connected to the upper inner cavity (12); The lower inner cavity (13) is located below the middle inner cavity (14), and the lower inner cavity (13) is connected to the middle inner cavity (14). In the working state, the lower part of the lower punch (6) passes through the middle inner cavity (14) and is set in the lower inner cavity (13), and the top of the lower punch (6) is set in the first cavity (9).

5. A non-rotating pyrotechnic pressing device according to claim 4, characterized in that, The upper punch (1) has a pressure monitoring hole (4) inside, which is used to monitor the pressure when the pyrotechnic material is squeezed.

6. A non-rotating pyrotechnic pressing device according to claim 5, characterized in that, The outer wall of the upper punch (1) is in contact with the inner wall of the first mold (2) and the second mold (3); the outer wall of the lower punch (6) is in contact with the inner wall of the external component (5) of the mold cavity, the inner wall of the first mold (2) and the inner wall of the second mold (3).

7. A non-rotating pyrotechnic pressing device according to claim 6, characterized in that, The first mold (2) further includes: a plurality of outer wall reinforcement modules disposed on the outer wall of the first mold (2); the inner wall of the mold cavity external component (5) is provided with a plurality of adaptation parts corresponding one by one to the outer wall reinforcement modules, the outer wall reinforcement modules and the adaptation parts corresponding one by one, so as to realize the stable connection between the first mold (2) and the mold cavity external component (5).

8. A non-rotating pyrotechnic pressing device according to claim 7, characterized in that, The first mold (2) is in the shape of a 180° arc and the inner wall of the first mold (2) is a semi-circular arc surface. The second mold (3) is composed of a 180° arc surface and a horizontal surface, and the arc surface matches the first mold (2).

9. A non-rotating pyrotechnic pressing device according to claim 8, characterized in that, The engagement part (10) is a rounded groove; the positioning pin (8) is interference-fitted with the engagement part (10).

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