Firework cylinder cold-press forming die

Abstract

The utility model provides a kind of fireworks cylinder cold press forming die, belong to fireworks manufacturing technical field, including bottom die, further include: chute, symmetrically set up in bottom die inside two sides;Hinge, fixed in bottom die bottom side wall;Sealing plate, fixed in hinge top rotating end;Six clamping slots, symmetrically set up in sealing plate two sides outer wall;Six support frames, symmetrically fixed in bottom die outer side wall;Clamping assembly, set in support frame inboard, its clamping end is connected with clamping slot;Sealing assembly, set in chute inboard, sealing fireworks cylinder bottom in cold pressing process;Top die assembly, set in sliding ring similar side;Core rod, set in top die assembly bottom, for supporting fireworks cylinder inside, in the utility model, prevent mould overheating to prolong mould service life and prevent deformation, maintain forming precision, reduce the dimensional deviation and structural instability caused by temperature fluctuation, ensure the consistency and high quality of fireworks cylinder.

Description

Technical Field

[0001] This utility model relates to the field of fireworks manufacturing technology, and more specifically, to a cold-pressing mold for fireworks tubes. Background Technology

[0002] Cold-pressing molds for fireworks tubes play a crucial role in fireworks manufacturing. They precisely shape raw materials under high pressure, ensuring the dimensional stability and structural density of the fireworks tubes. Mold design requires attention to several key factors to ensure high standards are met at every stage of the production process. However, the cold-pressing process still faces certain challenges, including material adaptability and molding precision. With continuous technological advancements, future molds will be more intelligent and environmentally friendly, driving the entire industry towards greater efficiency, safety, and sustainability.

[0003] A search revealed a Chinese patent application (CN207570416U) that discloses a cold-pressing mold for fireworks tubes. The mold comprises, from top to bottom, an upper cylinder, an upper template, a mandrel, a pressure plate, a mold cavity, a needle plate, and a lower cylinder. The upper template is fixed to the bottom of the upper cylinder. The mandrel is fixed to the bottom of the upper template by a mandrel fixing plate. The pressure plate has a through hole through which the mandrel can freely pass. The needle plate is installed at the bottom of the mold cavity and fixed to the top of the lower cylinder. A pressure cylinder is fixed to the upper template, and the pressure plate is fixed to the bottom of the pressure cylinder. A convex template with its sidewall connected to the inner wall of the mold cavity is located above the needle plate. A needle hole through which a steel needle from the needle plate can freely pass is provided on the convex template. The mandrel is driven downwards by the upper cylinder to extrude the raw material in the mold cavity, forming an emission hole. The pressure plate is driven downwards by the pressure cylinder to extrude the raw material in the upper part of the mold cavity. The convex template and the needle plate are driven upwards by the lower cylinder to extrude the raw material in the lower part of the mold cavity. This utility model is stable and reliable, has a long lifespan, low cost, and a high product molding rate.

[0004] While the aforementioned patents can achieve the detection function, they still have the following shortcomings in actual use:

[0005] During the cold pressing process of fireworks tubes, although it is a room temperature process, the temperature will still rise slightly due to frictional heat and internal loss during plastic deformation. Typically, the surface temperature of the mold will be between 50°C and 100°C, while the surface temperature of materials such as paper will remain between 40°C and 80°C. Overheating will cause the mold and raw materials to expand, thereby reducing the molding accuracy, causing dimensional deviations or shapes that do not meet design requirements. In addition, prolonged cooling time will reduce production efficiency, affect the production rhythm, and even affect the consistency of product quality.

[0006] Therefore, there is an urgent need for a cold-pressing mold for fireworks tubes to solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a cold-pressing mold for fireworks tubes to solve the problems mentioned in the background art.

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0009] A cold-pressing mold for fireworks tubes includes a bottom mold and further includes:

[0010] The chute is symmetrically opened on both sides inside the bottom mold;

[0011] Hinges are used to fix the bottom side wall of the bottom mold.

[0012] The sealing plate is fixed to the rotating end of the top of the hinge;

[0013] Six slots are symmetrically opened on both sides of the outer wall of the sealing plate;

[0014] Six support frames are symmetrically fixed to the outer wall of the bottom mold;

[0015] The engaging component is located inside the support frame, and its engaging end is connected to the slot.

[0016] A sealing component, located inside the slide groove, seals the bottom of the fireworks tube during the cold pressing process;

[0017] The top mold assembly is located on the side adjacent to the sliding ring;

[0018] The core rod, located at the bottom of the top mold assembly, is used to support the interior of the firework tube;

[0019] The heat dissipation component is located on one side of the top of the top mold assembly;

[0020] The water inlet pipe is located on the outside of one side of the heat dissipation assembly;

[0021] The cooling component is located at the outer end of the water inlet pipe, and the heat dissipation end is located on the inner side of the core rod.

[0022] As a preferred technical solution of this application, the engaging assembly includes an engaging rod slidably connected to the inner side of the support frame. A limiting ring is fixedly connected to the outer side of the middle section of the engaging rod. A spring is fixedly connected to the outer wall of the limiting ring near the support frame. The end of the spring away from the limiting ring is fixedly connected to the outer wall of the support frame. The engaging rod is engaged with the slot. A connecting handle is fixedly connected to the outer end of the engaging rod.

[0023] As a preferred technical solution of this application, the sealing assembly includes a connecting rod slidably connected to the inner side of the groove, a base plate fixedly connected to the bottom end of the connecting rod, a retaining ring fixedly connected to the outer wall of the top end of the connecting rod, a sliding ring slidably connected to the outer side of the top end of the base plate, a top mold fixedly connected to the outer wall of the side of the sliding ring, and the bottom wall of the top mold fixedly connected to the top end of the mandrel.

[0024] As a preferred technical solution of this application, the heat dissipation component includes a heat dissipation box fixed to one side of the top of the top mold. The bottom wall of the heat dissipation box has an air inlet groove, the inner side of the heat dissipation box has heat dissipation holes, the gaps between the heat dissipation holes have evenly distributed ventilation holes, the ventilation holes penetrate the heat dissipation box, one end of the heat dissipation hole is fixedly connected to a water inlet pipe, and multiple cooling fans are fixedly connected to the top of the heat dissipation box.

[0025] As a preferred technical solution of this application, the cooling assembly includes a delivery pump fixedly connected to the outer end of the water inlet pipe, a first manifold fixedly connected to the end of the delivery pump away from the water inlet pipe, a plurality of first connecting pipes fixedly connected to the bottom wall of the first manifold, a second manifold fixedly connected to the bottom of the end of the first connecting pipe away from the first manifold, uniformly distributed cooling pipes fixedly connected to the bottom wall of the second manifold, the cooling pipes fixedly connected to a core rod, a first branch pipe fixedly connected to the top water inlet of the cooling pipe, a second connecting pipe fixedly connected to one side of the bottom wall of the first branch pipe, a second branch pipe fixedly connected to the end of the second connecting pipe near the first manifold, a water outlet pipe fixedly connected to the end of the second branch pipe away from the water inlet pipe, the water outlet pipe fixedly connected to the other end of the heat dissipation hole, a compensation pipe fixedly connected to the side of the water outlet pipe away from the heat dissipation box, a piston slidably connected to the inner side of the compensation pipe, and a connecting hole opened in the bottom wall of the compensation pipe.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] In the scheme of this application:

[0028] 1. Cooling the fireworks tube during stamping using heat dissipation and cooling components effectively prevents mold overheating, keeping the mold within the ideal temperature range, thereby extending mold life and preventing deformation. Furthermore, cooling helps maintain molding accuracy, reduces dimensional deviations and structural instability caused by temperature fluctuations, and ensures the consistency and high quality of the fireworks tube. The cooling process also accelerates cooling speed, improves production efficiency, shortens production cycles, and increases output. Simultaneously, uniform cooling reduces cracks and defects, improving overall product quality.

[0029] 2. By using the top mold and connecting rods to move the bottom plate upwards, the firework tube is lifted, simultaneously dissipating heat to the outside. This works in conjunction with the heat dissipation and cooling components to cool the firework tube, facilitating demolding after stamping and accelerating the cooling process. Effective heat dissipation prevents the mold from overheating, ensuring that the mold and firework tube maintain ideal temperatures during cold pressing, thereby increasing mold lifespan and reducing deformation. Furthermore, the movement of the bottom plate and the cooperation of the top mold allow the firework tube to be smoothly lifted from the mold, simplifying the demolding process, improving operational efficiency, and reducing production downtime.

[0030] 3. By pulling the connecting handle in the locking assembly, the locking of the sealing plate is released, facilitating its opening and cleaning of the bottom mold interior. This makes the mold cleaning process simpler and more efficient, avoiding the disassembly or complex operations required by traditional methods, thus saving time and labor costs. Cleaning the inside of the mold prevents material residue or scale buildup, ensuring the mold's long-term usability and molding accuracy, and avoiding product quality problems caused by scale buildup. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 ;

[0032] Figure 2 yes Figure 1 Enlarged view of a portion of point A in the middle;

[0033] Figure 3 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 ;

[0034] Figure 4 This is a partial three-dimensional structural schematic diagram and enlarged view of the heat dissipation box in this utility model;

[0035] Figure 5 This is a cross-sectional structural diagram of the heat dissipation box in this utility model;

[0036] Figure 6 This is a partial three-dimensional structural diagram of the first connecting pipe in this utility model;

[0037] Figure 7 This is a partial three-dimensional structural diagram of the second connecting pipe in this utility model;

[0038] Figure 8 This is a partial three-dimensional structural diagram of the cooling pipe in this utility model.

[0039] The image shows:

[0040] 1. Bottom mold; 11. Slide groove; 12. Hinge; 13. Sealing plate; 14. Slot; 2. Support frame; 21. Spring; 22. Limiting ring; 23. Engaging rod; 24. Connecting handle; 3. Connecting rod; 31. Base plate; 32. Retaining ring; 33. Sliding ring; 4. Top mold; 5. Heat dissipation box; 51. Ventilation hole; 52. Heat dissipation hole; 53. Water inlet pipe; 54. Delivery pump; 55. First manifold; 56. First connecting pipe; 57. Second manifold; 58. Cooling pipe; 59. First branch pipe; 510. Second connecting pipe; 511. Second branch pipe; 512. Water outlet pipe; 513. Compensation pipe; 514. Piston; 515. Connecting hole; 516. Air inlet slot; 517. Cooling fan; 6. Core rod. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0042] like Figure 1-8 As shown, the cold-pressing mold for a fireworks tube proposed in this embodiment includes a bottom mold 1, and further includes:

[0043] Slide grooves 11 are symmetrically opened on both sides inside the bottom mold 1;

[0044] Hinge 12 is fixed to the bottom side wall of the bottom mold 1;

[0045] The sealing plate 13 is fixed to the top rotating end of the hinge 12, and the bottom mold 1 and the sealing plate 13 are connected through the hinge 12;

[0046] Six slots 14 are symmetrically opened on both sides of the outer wall of the sealing plate 13;

[0047] Six support frames 2 are symmetrically fixed to the outer wall of the bottom mold 1;

[0048] The engaging component is located inside the support frame 2, and its engaging end is connected to the slot 14. The support frame 2 supports the engaging component.

[0049] A sealing component is located inside the slide groove 11 to seal the bottom of the firework tube during the cold pressing process;

[0050] The top mold assembly is located on the side adjacent to the sliding ring 33;

[0051] Core rod 6, located at the bottom of the top mold assembly, is used to support the interior of the firework tube;

[0052] The heat dissipation component is located on one side of the top of the top mold assembly;

[0053] Water inlet pipe 53 is located on the outside of one side of the heat dissipation component;

[0054] The cooling component is located at the outer end of the water inlet pipe 53, and the heat dissipation end is located inside the core rod 6.

[0055] The locking assembly includes a locking rod 23 slidably connected to the inner side of the support frame 2. The support frame 2 supports and limits the locking rod 23, allowing it to slide within the support frame 2. A limit ring 22 is fixedly connected to the outer side of the middle section of the locking rod 23, supporting and fixing the limit ring 22. A spring 21 is fixedly connected to the outer wall of the limit ring 22 near the support frame 2. The end of the spring 21 away from the limit ring 22 is fixedly connected to the outer wall of the support frame 2. The spring 21 supports the support frame. 2. The stress point pushes the limiting ring 22 toward the sealing plate 13. The locking rod 23 engages with the locking groove 14. The locking rod 23 and the locking groove 14 engage with each other to fix the bottom mold 1 and the sealing plate 13. The outer end of the locking rod 23 is fixedly connected to the connecting handle 24. The locking rod 23 supports and fixes the connecting handle 24. At the same time, the locking rod 23 is connected through the connecting handle 24. Thus, by pulling the connecting handle 24, the three locking rods 23 can be moved simultaneously.

[0056] The sealing assembly includes a connecting rod 3 slidably connected to the inner side of a groove 11, which limits the connecting rod 3 so that it can slide within the groove 11. A base plate 31 is fixedly connected to the bottom end of the connecting rod 3, which supports and fixes the base plate 31. A retaining ring 32 is fixedly connected to the outer wall of the top end of the connecting rod 3, which supports and fixes the retaining ring 32. A sliding ring 33 is slidably connected to the outer side of the top end of the base plate 31, which limits the sliding ring 33 so that it can slide outside the base plate 31. A top mold 4 is fixedly connected to the outer wall of the sliding ring 33 on the side adjacent to it, which supports and fixes the top mold 4. The bottom wall of the top mold 4 is fixedly connected to the top end of the mandrel 6, which supports and fixes the mandrel 6.

[0057] The heat dissipation assembly includes a heat dissipation box 5 fixed to one side of the top of the top mold 4. The heat dissipation box 5 is supported and fixed by the top mold 4. An air inlet groove 516 is opened on the bottom wall of the heat dissipation box 5. A heat dissipation hole 52 is opened on the inner side of the heat dissipation box 5. A ventilation hole 51 is evenly distributed between the heat dissipation holes 52. The ventilation hole 51 penetrates the heat dissipation box 5. One end of the heat dissipation hole 52 is fixedly connected to a water inlet pipe 53. Multiple cooling fans 517 are fixedly connected to the top of the heat dissipation box 5. The cooling fans 517 draw air from the inside of the ventilation hole 51. At the same time, the air in the ventilation hole 51 is replenished through the air inlet groove 516 at the bottom. Thus, the external cold air and the side wall of the ventilation hole 51 are exchanged for heat, thereby cooling the coolant in the heat dissipation hole 52.

[0058] The cooling assembly includes a water inlet pipe 53 with a delivery pump 54 fixedly connected to its outer end. A first manifold 55 is fixedly connected to the end of the delivery pump 54 away from the water inlet pipe 53, connecting the water inlet pipe 53 and the first manifold 55. Multiple first connecting pipes 56 are fixedly connected to the bottom wall of the first manifold 55. A second manifold 57 is fixedly connected to the bottom of the end of the first connecting pipe 56 away from the first manifold 55, connecting the first manifold 55 and the second manifold 57. Evenly distributed cooling pipes 58 are fixedly connected to the bottom wall of the second manifold 57. The cooling pipes 58 are fixedly connected to a mandrel 6, which supports and fixes them. A first branch pipe 59 is fixedly connected to the top water inlet end of the cooling pipe 58, and a second branch pipe 59 is fixedly connected to one side of its bottom wall. Connector 510, the second connecting pipe 510 is fixedly connected to the end of the second connecting pipe 510 near the end of the first manifold 55 to the second branch pipe 511, the first branch pipe 59 and the second branch pipe 511 are connected through the second connecting pipe 510, the end of the second branch pipe 511 away from the water inlet pipe 53 is fixedly connected to the water outlet pipe 512, the water outlet pipe 512 is fixedly connected to the other end of the heat dissipation hole 52, the second branch pipe 511 and the heat dissipation hole 52 are connected through the water outlet pipe 512, the side of the water outlet pipe 512 away from the heat dissipation box 5 is fixedly connected to the compensation pipe 513, the piston 514 is slidably connected to the inside of the compensation pipe 513, the bottom wall of the compensation pipe 513 has a connecting hole 515, the bottom space of the compensation pipe 513 is connected to the external space through the connecting hole 515, so that the piston 514 can slide inside the compensation pipe 513.

[0059] Specifically, when using this firework tube cold-pressing mold:

[0060] First, the raw material is placed on the top of the bottom plate 31. Then, the top mold 4 moves downward, driving the mandrel 6 to move synchronously. Thus, the top mold 4, mandrel 6, bottom mold 1, and bottom plate 31 work together to cold press the raw material.

[0061] After cold pressing, the top mold 4 is moved to the top by the cold press, and the sliding ring 33 is moved synchronously by the top mold 4. The connecting rod 3 is moved synchronously by the retaining ring 32. Then the firework tube and the bottom plate 31 are moved synchronously by the connecting rod 3, and the firework tube is lifted from the bottom mold 1 to lift the firework tube.

[0062] Simultaneously, the cooling fan 517 draws air from the ventilation hole 51, while the air inlet 516 replenishes the ventilation hole 51 with cold air. This cold air exchanges heat with the inner wall of the ventilation hole 51, thereby cooling the coolant in the heat dissipation hole 52. At the same time, the delivery pump 54 draws coolant from the first manifold 55, and the delivery pump 54 also draws coolant from the cooling pipe 58 through the first manifold 55, the first connecting pipe 56, and the second manifold 57, and delivers it into the water inlet pipe 53. The coolant is then delivered into the heat dissipation hole 52 for cooling through the water inlet pipe 53. The cooled coolant is then delivered into the second branch pipe 511 through the water outlet pipe 512. The coolant is then returned to the cooling pipe 58 through the second connecting pipe 510 and the first branch pipe 59 to replenish it. The cooling pipe 58 also cools the core rod 6, thereby cooling the interior of the firework tube.

Claims

1. A cold-pressing mold for fireworks tubes, comprising a bottom mold (1), characterized in that, Also includes: The grooves (11) are symmetrically opened on both sides inside the bottom mold (1); Hinges (12) are fixed to the bottom side wall of the bottom mold (1); The sealing plate (13) is fixed to the top rotating end of the hinge (12); Six slots (14) are symmetrically opened on both sides of the outer wall of the sealing plate (13); Six support frames (2) are symmetrically fixed to the outer wall of the bottom mold (1); The engaging assembly is located inside the support frame (2), and its engaging end is connected to the slot (14); A sealing component is provided inside the slide groove (11) to seal the bottom of the firework tube during the cold pressing process; The top mold assembly is located on the side adjacent to the sliding ring (33); The core rod (6) is located at the bottom of the top mold assembly and is used to support the inside of the firework tube; The heat dissipation component is located on one side of the top of the top mold assembly; Water inlet pipe (53) is located on the outside of one side of the heat dissipation assembly; The cooling component is located at the outer end of the water inlet pipe (53), and the heat dissipation end is located inside the core rod (6).

2. The cold-pressing mold for a fireworks tube according to claim 1, characterized in that, The engaging assembly includes an engaging rod (23) slidably connected to the inner side of the support frame (2). A limiting ring (22) is fixedly connected to the outer side of the middle section of the engaging rod (23). A spring (21) is fixedly connected to the outer wall of the limiting ring (22) near the support frame (2). The end of the spring (21) away from the limiting ring (22) is fixedly connected to the outer wall of the support frame (2). The engaging rod (23) engages with the slot (14). A connecting handle (24) is fixedly connected to the outer end of the engaging rod (23).

3. The cold-pressing mold for a fireworks tube according to claim 2, characterized in that, The sealing assembly includes a connecting rod (3) slidably connected to the inner side of the groove (11), a base plate (31) fixedly connected to the bottom end of the connecting rod (3), a retaining ring (32) fixedly connected to the outer wall of the top end of the connecting rod (3), a sliding ring (33) slidably connected to the outer side of the top end of the base plate (31), a top mold (4) fixedly connected to the outer wall of the sliding ring (33) on the side adjacent to it, and the bottom wall of the top mold (4) fixedly connected to the top end of the mandrel (6).

4. The cold-pressing mold for a fireworks tube according to claim 3, characterized in that, The heat dissipation assembly includes a heat dissipation box (5) fixed to one side of the top of the top mold (4). The bottom wall of the heat dissipation box (5) is provided with an air inlet groove (516). The inner side of the heat dissipation box (5) is provided with heat dissipation holes (52). The gaps between the heat dissipation holes (52) are provided with evenly distributed ventilation holes (51). The ventilation holes (51) penetrate the heat dissipation box (5). One end of the heat dissipation hole (52) is fixedly connected to a water inlet pipe (53). Multiple cooling fans (517) are fixedly connected to the top of the heat dissipation box (5).

5. The cold-pressing mold for a fireworks tube according to claim 4, characterized in that, The cooling assembly includes a water inlet pipe (53) with a delivery pump (54) fixedly connected to its outer end. A first manifold (55) is fixedly connected to the end of the delivery pump (54) away from the water inlet pipe (53). Multiple first connecting pipes (56) are fixedly connected to the bottom wall of the first manifold (55). A second manifold (57) is fixedly connected to the bottom of the end of the first connecting pipe (56) away from the first manifold (55). Evenly distributed cooling pipes (58) are fixedly connected to the bottom wall of the second manifold (57). The cooling pipes (58) are fixedly connected to the core rod (6). A first branch pipe (59) is fixedly connected to the top water inlet end of each cooling pipe (58). A second connecting pipe (510) is fixedly connected to one side of the bottom wall of the first branch pipe (59). A second branch pipe (511) is fixedly connected to the end of the second connecting pipe (510) near the first manifold (55). An outlet pipe (512) is fixedly connected to the end of the second branch pipe (511) away from the inlet pipe (53). The outlet pipe (512) is fixedly connected to the other end of the heat dissipation hole (52). A compensation pipe (513) is fixedly connected to the side of the outlet pipe (512) away from the heat dissipation box (5). A piston (514) is slidably connected to the inside of the compensation pipe (513). A connecting hole (515) is opened on the bottom wall of the compensation pipe (513).

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