A pyrotechnic powder filling machine

Abstract

This invention discloses a pyrotechnic powder filling machine, including a frame and a feeding device, a quantitative filling device, and a conveying device for conveying pyrotechnic tubes, all mounted on the frame. The output end of the feeding device is connected to the input end of the quantitative filling device, which is mounted above the conveying device. The quantitative filling device includes a material cylinder, a reciprocating trough, and a distributing assembly. The distributing assembly is mounted at the bottom of the reciprocating trough, which slides back and forth between the conveying device and the material cylinder. The distributing assembly includes a distributing disc and a switch plate. The distributing disc has distributing holes corresponding to the filling holes on the pyrotechnic tubes. The switch plate slides on the lower side of the distributing disc to alternately open and close the distributing holes. A leveling mechanism for scraping the upper end of the distributing holes is provided at the lower end of the material cylinder. This invention employs fully automated filling, achieving high filling efficiency, significantly reducing labor costs, eliminating the heavy labor intensity of workers, and ensuring stable and excellent product quality.

Description

Technical Field

[0001] This invention belongs to the field of fireworks and firecrackers production machinery, specifically relating to a pyrotechnic powder filling machine. Background Technology

[0002] Currently, the production of fireworks and firecrackers is labor-intensive and involves dangerous operations involving flammable and explosive materials. Most of the operations are still carried out using primitive, traditional manual methods, with very rudimentary equipment, low efficiency, poor safety performance, and frequent production accidents, making it impossible to protect life and property.

[0003] In the specific fireworks manufacturing process, workers manually fill the prepared mixture of explosives into a metering mold, then manually transfer the explosives from the mold into the inner tube of the firework before transferring it to other processes. The main problems encountered are as follows:

[0004] 1. The entire process is carried out manually, which not only makes it difficult to maintain consistent quality, but also makes the safety process uncontrollable due to the special environment on site, resulting in significant safety hazards.

[0005] 2. The mixing and loading of drugs are inefficient and involve high labor intensity for workers. The existing manual single-workbench operation involves a large amount of physical labor, and as physical strength declines, the loading effect will also decrease, thus affecting product quality.

[0006] 3. A large amount of gunpowder dust particles were present at the site, which seriously endangered human health. At the same time, the large amount of dust also polluted the environment.

[0007] 4. Due to the ventilation and heat dissipation requirements of fireworks manufacturing, the existing process layout results in a large space occupation. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a pyrotechnic powder filling machine that can achieve human-machine isolation, anti-static properties, high efficiency, safety and environmental protection.

[0009] To achieve the above objectives, the present invention discloses a pyrotechnic powder filling machine, comprising a frame and a feeding device, a quantitative filling device, and a conveying device for conveying pyrotechnic tubes mounted on the frame. The output end of the feeding device is connected to the input end of the quantitative filling device, and the output end of the quantitative filling device is mounted above the conveying device. The quantitative filling device includes a material cylinder, a reciprocating trough, and a distributing assembly. The distributing assembly is mounted at the bottom of the reciprocating trough, which slides back and forth between the conveying device and the material cylinder. The distributing assembly includes a distributing disc and a switch plate. The distributing disc is provided with distributing holes corresponding to the charging holes on the pyrotechnic tube. The switch plate slides on the lower side of the distributing disc to alternately open and close the distributing holes. The lower end of the material cylinder is provided with a leveling mechanism for scraping the upper end of the distributing holes.

[0010] Furthermore, the leveling mechanism is a scraping brush installed circumferentially along the bottom of the material cylinder, with the lower end of the scraping brush abutting against the bottom of the reciprocating groove.

[0011] Furthermore, a transition plate is installed on the lower side of the material distribution plate, and a transition hole corresponding to the material distribution hole is provided on the transition plate. The switch plate is located between the transition hole and the material distribution hole. A lifting telescopic cylinder is provided in the conveyor belt of the conveying device to lift the firework tube against the transition plate. A top plate is installed on the telescopic end of the lifting telescopic cylinder.

[0012] Furthermore, a guide wedge for centering and positioning the firework tube is circumferentially installed on the lower side of the transition plate, and multiple guide wedges form a flared structure that is larger at the bottom and smaller at the top.

[0013] Furthermore, the conveying device is equipped with centering telescopic cylinders and induction switches on both sides, and the telescopic end of the centering telescopic cylinder is equipped with a V-shaped centering block that matches the shape of the fireworks tube.

[0014] Furthermore, the quantitative feeding device also includes a material leveling wheel and a motor. The material leveling wheel is disposed inside the material cylinder and near the bottom of the reciprocating groove. The motor is connected to the material leveling wheel in a transmission manner. The material leveling wheel is provided with a push plate that pushes the material into each distributing hole.

[0015] Furthermore, the quantitative feeding device also includes a sieving assembly, which includes a transition cylinder, a transition cylinder telescopic cylinder, a sieving wheel, a sieving plate, and a screen. The upper end of the transition cylinder is connected to the input end of the feeding device, and the lower end is connected to the material cylinder. The sieving plate is installed between the transition cylinder and the material cylinder, and the sieving plate is provided with multiple sieving holes. The screen is installed on the sieving plate. The sieving wheel is provided with a sieving scraper that is inclined relative to the sieving plate. The transition cylinder telescopic cylinder is installed on the sieving plate, and the telescopic end of the transition cylinder is connected to the transition cylinder.

[0016] Furthermore, dust covers, U-shaped blocks, and sliding rails and sliders that slide together are installed at both ends of the reciprocating groove. The sliding rails and sliders are located inside the dust covers. The lower end of the dust covers is open. One side of the dust covers slides into the U-shaped groove of the U-shaped block. One side of the U-shaped block is installed on the slider, and the other side is installed in the reciprocating groove.

[0017] Furthermore, the feeding device includes a switching telescopic cylinder, a switching hopper, and two transition hoppers arranged opposite each other. The material cylinder and the material distribution assembly are two oppositely arranged. The switching telescopic cylinder drives the output end of the switching hopper to reciprocate between the input ports of the two transition hoppers. The transition hoppers are connected to the input end of the material cylinder.

[0018] Furthermore, an anti-blocking device is provided on one side of the material cylinder on the reciprocating groove. The anti-blocking device includes an anti-blocking telescopic cylinder and an anti-blocking mounting plate. An anti-blocking rod corresponding to the material distribution hole is provided on the anti-blocking mounting plate. The outer diameter of the anti-blocking rod is smaller than the inner diameter of the material distribution hole.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] This invention employs fully automated loading, resulting in high loading efficiency, significant labor savings, and elimination of the heavy workload for workers, while ensuring stable and excellent product quality. Furthermore, this invention achieves separation of human and machine operations, and uses hydraulic or pneumatic power sources at the work site, further eliminating the risk of explosion associated with electricity. Moreover, it greatly saves space, prevents the dispersion of gunpowder dust from each process, and fully complies with environmental protection requirements.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0023] Figure 1 This is a first isometric schematic diagram of a pyrotechnic powder filling machine disclosed in a preferred embodiment of the present invention;

[0024] Figure 2 This is a front view schematic diagram of a pyrotechnic powder filling machine disclosed in a preferred embodiment of the present invention;

[0025] Figure 3 This is a second isometric schematic diagram of the pyrotechnic powder filling machine disclosed in a preferred embodiment of the present invention (excluding the stepper motor and transmission part of the conveying device);

[0026] Figure 4 This is a front view schematic diagram of a pyrotechnic powder filling machine disclosed in a preferred embodiment of the present invention (excluding the stepper motor and transmission part of the conveying device);

[0027] Figure 5 This is a first isometric view of the reciprocating trough, dispensing assembly, and dust cover of the pyrotechnic powder filling machine disclosed in a preferred embodiment of the present invention;

[0028] Figure 6 This is an isometric schematic diagram of the material cylinder and crushing device of the pyrotechnic powder filling machine disclosed in a preferred embodiment of the present invention;

[0029] Figure 7This is a front view schematic diagram of the material cylinder and crushing device of the pyrotechnic powder filling machine disclosed in a preferred embodiment of the present invention (excluding the material cylinder, transition cylinder and scraper brush);

[0030] Figure 8 This is an isometric view of the reciprocating trough and dispensing assembly of the pyrotechnic powder filling machine disclosed in a preferred embodiment of the present invention, mounted on the machine frame.

[0031] Figure 9 This is an exploded view of the material dispensing component of the pyrotechnic powder filling machine disclosed in a preferred embodiment of the present invention.

[0032] Legend:

[0033] 1. Frame; 2. Firework tube; 3. Material cylinder; 4. Reciprocating trough; 5. Material distribution assembly; 6. Material distribution plate; 7. Switch plate; 8. Material distribution hole; 9. Scraper brush; 10. Transition plate; 11. Transition hole; 12. Conveyor belt; 13. Lifting telescopic cylinder; 14. Top plate; 15. Guide wedge; 16. Centering telescopic cylinder; 17. Inductive switch; 18. V-shaped centering block; 19. Material leveling wheel; 20. Motor; 21. Push plate; 22. Screening assembly; 23. Transition cylinder; 24. Transition cylinder telescopic cylinder; 25. Screening wheel 26. Screen plate; 27. Screen hole; 28. Dust cover; 29. ​​U-shaped block; 30. Slide rail; 31. Sliding block; 32. U-shaped block groove; 33. Switching telescopic cylinder; 34. Switching hopper; 35. Transition hopper; 36. Anti-blocking device; 37. Anti-blocking telescopic cylinder; 38. Anti-blocking mounting plate; 39. Anti-blocking rod; 40. Tuning fork sensor; 41. Stepper motor; 42. Tensioning roller; 45. Reciprocating groove telescopic cylinder; 46. Switch plate telescopic cylinder; 47. U-shaped support frame; 48. Material conveying assembly; 49. Screen scraper. Detailed Implementation

[0034] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0035] like Figures 1-9As shown, this invention discloses a pyrotechnic powder filling machine, including a frame 1 and a feeding device, a quantitative filling device, and a conveying device for conveying pyrotechnic tubes 2 (the pyrotechnic tubes 2 are hexagonal prism structures, including multiple closely arranged powder tubes) mounted on the frame 1. The conveying device is a belt conveyor, including a conveyor belt 12 and a stepper motor 41. The conveyor belt 12 is fitted with a drive roller, a driven roller, and a tensioning roller 42. The stepper motor 41 and the drive roller adopt a long-distance transmission shaft isolation transmission method. The feeding device... The output end of the metering device is connected to the input end of the metering device, which is installed above the conveying device. The metering device includes a material cylinder 3, a reciprocating trough 4, and a distributing assembly 5. The distributing assembly 5 is installed at the bottom of the reciprocating trough 4, which slides back and forth between the conveying device and the material cylinder 3. A tuning fork sensor 40 for detecting the depth of powder material is installed inside the material cylinder 3. The distributing assembly includes a distributing plate 6 and a switch plate 7. The distributing plate 6 is provided with distributing holes 8 corresponding to the charging holes on the firework tube 2. The switch plate... 7 slides on the lower side of the distribution plate 6 to alternately open and close the distribution hole 8. The switch plate 7 is driven by the switch plate telescopic cylinder 46 installed at the bottom of the reciprocating groove 4. When the switch plate telescopic cylinder 46 extends, the hole on the switch plate 7 aligns with the distribution hole 8, and the powder material in the distribution hole 8 falls into the charging hole of the fireworks tube 2. When the switch plate telescopic cylinder 46 retracts, the hole on the switch plate 7 is misaligned with the distribution hole 8, thereby closing the bottom of the distribution hole 8. The lower end of the material cylinder 3 is provided with a leveling mechanism to scrape the upper end of the distribution hole 8. Among them, the conveying... The conveyor belt 12 is set vertically to the reciprocating trough 4. The quantitative feeding device is located on one side of the conveyor belt 12. When the reciprocating trough 4 is driven by the reciprocating trough telescopic cylinder 45 to the point where the distributing plate 6 is below the material cylinder 3, the powder material in the material cylinder 3 falls into the distributing hole 8. The material leveling mechanism scrapes the upper part of the distributing hole 8 to ensure that the material in each distributing hole 8 is full and equal. Then, driven by the reciprocating trough telescopic cylinder 45, the distributing plate 6 moves to the top of the conveyor belt 12, and then the switch plate telescopic cylinder 46 is activated to open the distributing hole 8.

[0036] In this embodiment, the leveling mechanism is a scraping brush 9 installed circumferentially along the bottom of the material cylinder 3. The lower end of the scraping brush 9 abuts against the bottom of the reciprocating groove 4, thereby confining the powder material to the inner wall of the material cylinder 3. At the same time, the scraping brush 9 and the reciprocating groove 4 are flexibly connected to avoid violent friction and heat generation.

[0037] In this embodiment, a transition plate 10 is installed on the lower side of the distribution plate 6. The transition plate 10 is provided with a transition hole 11 corresponding to the distribution hole 8. The switch plate 7 is disposed between the transition hole 11 and the distribution hole 8. A lifting telescopic cylinder 13 is provided inside the conveyor belt 12 of the conveying device to lift the firework tube 2 and press it against the transition plate 10. A top plate 14 is installed on the telescopic end of the lifting telescopic cylinder 13. When the firework tube 2 moves to the lower side of the transition plate 10, the lifting telescopic cylinder 13 is activated, thereby driving the firework tube 2 to rise and press against the lower side of the transition plate 10. At this time, the hole on the switch plate 7 and the distribution hole 8 are misaligned. Then, the switch plate 7 is driven by the switch plate telescopic cylinder 46 to open the distribution hole 8. The distribution hole 8 passes through the transition hole 11 and enters the firework tube 2, thereby avoiding To prevent the scattering of powder materials during the falling process, and further to ensure accurate alignment between the charging hole and the transition hole 11 of the firework tube 2, guide wedges 15 for centering and positioning of the firework tube 2 are installed circumferentially on the lower side of the transition plate 10. Multiple guide wedges 15 form a flared structure with a larger bottom and a smaller top, so that the firework tube 2 automatically centers as it rises. At the same time, in this embodiment, centering telescopic cylinders 16 and induction switches 17 are provided on both sides of the conveying device. The telescopic end of the centering telescopic cylinder 16 is equipped with a V-shaped centering block 18 that matches the shape of the firework tube 2. When the induction switch 17 senses the firework tube 2, the centering telescopic cylinder 16 is activated, so that the corresponding V-shaped centering block 18 extends, thereby adjusting the position of the firework tube 2, that is, the charging hole and the dispensing hole 8 on the firework tube 2 correspond one-to-one.

[0038] In this embodiment, since the material tends to pile up in the center of the material cylinder 3, in order to evenly distribute the material in the material cylinder 3 into each distribution hole 8, the quantitative feeding device also includes a material leveling wheel 19 and a motor 20. The motor 20 is mounted on a U-shaped support frame 47, which is mounted on the frame 1. The material leveling wheel 19 is located inside the material cylinder 3 and close to the bottom of the reciprocating groove 4. The motor 20 is connected to the material leveling wheel 19 in a transmission. The material leveling wheel 19 is provided with a pusher plate 21 that pushes the material into each distribution hole 8. The pusher plate 21 can evenly distribute the material during rotation.

[0039] Furthermore, considering the potential for powder materials to clump together, the quantitative feeding device also includes a sieving assembly 22 to further disperse the clumps. The sieving assembly 22 includes a transition cylinder 23, a transition cylinder telescopic cylinder 24, a sieving wheel 25, a sieving plate 26, and a screen (not shown). The upper end of the transition cylinder 23 is connected to the input end of the feeding device, and the lower end is aligned with the center of the material cylinder 3. The sieving plate 26 is installed between the transition cylinder 23 and the material cylinder 3, and has multiple sieving holes 27. The screen is installed on the sieving plate 26, and the sieving wheel 25 is positioned relative to the sieving plate 26. An inclined sieve scraper 49 has rubber blocks on its surface opposite to the sieve plate 26. A transition cylinder telescopic cylinder 24 is installed on the sieve plate 26, and the telescopic end of the transition cylinder 24 is connected to the transition cylinder 23. The sieve wheel 25 and the material leveling wheel 19 are coaxially connected and are both driven by the motor 20. When the clumps of material fall onto the screen, the sieve scraper 49 can crush and break up the material during its rotation, thereby dispersing the material and allowing it to fall from the screen holes into the bottom material cylinder 3. The rubber blocks on the sieve scraper 49 can prevent severe friction.

[0040] In this embodiment, in order to realize the reciprocating motion of the reciprocating groove 4, dust covers 28, U-shaped blocks 29, and slide rails 30 and sliders 31 that slide against each other are installed on the frame 1 at both ends of the reciprocating groove 4. The reciprocating groove telescopic cylinder 45 is connected to one of the U-shaped blocks 29. The slide rails 30 and sliders 31 are set inside the dust cover 28 to prevent dust from escaping to the mating surface of the slide rails 30 and sliders 31, thereby increasing the relative friction. The lower end of the dust cover 28 is open, and one side of the dust cover 28 slides into the U-shaped block groove 32 of the U-shaped block 29. One side of the U-shaped block 29 is installed on the slider 31, and the other side is installed in the reciprocating groove 4.

[0041] In this embodiment, to improve the efficiency of loading, the feeding device includes a switching telescopic cylinder 33, a switching hopper 34, and two transition hoppers 35 arranged opposite each other. The output end of the conveying component 48 is aligned with the upper end of the switching hopper 34. The material cylinder 3 and the material distribution component 5 are two oppositely arranged components. The switching telescopic cylinder 33 drives the output end of the switching hopper 34 to reciprocate between the input ports of the two transition hoppers 35. The transition hoppers 35 are connected to the input end of the material cylinder 3. Thus, when the material distribution component 5 on one side of the reciprocating groove 4 feeds through the equalizing wheel 19, the material distribution hole 8 in the material distribution component 5 on the other side is aligned with the charging hole of the firework tube 2. At the same time, the switch plate 7 opens to load the firework tube 2. Thus, each movement of the reciprocating groove telescopic cylinder 45 can load the firework tube 2. Compared with a single quantitative loading device, the loading efficiency is doubled.

[0042] In this embodiment, to prevent powder material from getting stuck in the dispensing hole 8, an anti-blocking device 36 is provided on one side of the material cylinder 3 on the reciprocating trough 4. The anti-blocking device 36 is located directly above the conveyor belt 12. The anti-blocking device 36 includes an anti-blocking telescopic cylinder 37 and an anti-blocking mounting plate 38. An anti-blocking rod 39 corresponding to the dispensing hole 8 is provided on the anti-blocking mounting plate 38. The anti-blocking rod 39 is a rubber rod with a rounded end. The outer diameter of the anti-blocking rod 39 is smaller than the inner diameter of the dispensing hole 8. When the switch plate 7 is activated to open the bottom of the dispensing hole 8, the anti-blocking telescopic cylinder 37 moves downward, and the anti-blocking rod 39 is inserted into the dispensing hole 8, thereby opening the dispensing hole 8 and accelerating the falling into the fireworks tube 2.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pyrotechnic powder filling machine, characterized in that, The device includes a frame (1) and a feeding device, a quantitative filling device, and a conveying device for conveying the firework tube (2) mounted on the frame (1). The firework tube (2) has a hexagonal prism structure and includes multiple closely arranged cartridges. The output end of the feeding device is connected to the input end of the quantitative filling device. The output end of the quantitative filling device is mounted above the conveying device. The quantitative filling device includes two material cylinders (3), a reciprocating trough (4), and two distributing components (5). The quantitative filling device also includes a leveling wheel (19) and a motor (20). The leveling wheel (19) is located inside the material cylinder (3) and close to the bottom of the reciprocating trough (4). The distributing components (5) are mounted on the bottom of the reciprocating trough (4). The reciprocating trough (4) slides back and forth between the conveying device and the material cylinder (3). The distributing components (5) include a distributing plate (6) and a switch plate (7). The material distribution plate (6) is provided with a material distribution hole (8) corresponding to the charging hole on the firework tube (2). The switch plate (7) is slidably connected to the lower side of the material distribution plate (6) to alternately open and close the material distribution hole (8). A transition plate (10) is installed on the lower side of the material distribution plate (6). A transition hole (11) corresponding to the material distribution hole (8) is provided on the transition plate (10). The switch plate (7) is located between the transition hole (11) and the material distribution hole (8). A lifting telescopic cylinder (13) is provided in the conveyor belt (12) of the conveying device to lift the firework tube (2) against the transition plate (10). A top plate (14) is installed on the telescopic end of the lifting telescopic cylinder (13). A guide wedge (15) for centering and positioning the firework tube (2) is installed on the circumferential side of the lower side of the transition plate (10). Multiple guide wedges (15) form a flared structure with a larger bottom and a smaller top. The conveying device is provided with a centering telescopic cylinder (16) and an induction switch (17) on both sides. The telescopic end of the centering telescopic cylinder (16) is equipped with a V-shaped centering block (18) that matches the shape of the firework tube (2). The feeding device includes a switching telescopic cylinder (33), a switching hopper (34), and two transition hoppers (35) arranged opposite to each other. The material cylinder (3) and the material distribution component (5) are two opposite to each other. The switching telescopic cylinder (33) drives the output end of the switching hopper (34) to reciprocate between the input ports of the two transition hoppers (35). The transition hoppers (35) are connected to the input end of the material cylinder (3). When the material distribution component (5) on one side of the reciprocating groove (4) feeds through the uniform wheel (19), the material distribution hole (8) in the material distribution component (5) on the other side is aligned with the charging hole of the firework tube (2). At the same time, the switch plate (7) is opened to charge the firework tube (2), so that each movement of the reciprocating groove (4) can charge the firework tube (2). The lower end of the material cylinder (3) is provided with a leveling mechanism for scraping the upper end of the material distribution hole (8). The leveling mechanism is a scraping brush (9) installed circumferentially along the bottom of the material cylinder (3). The lower end of the scraping brush (9) abuts against the bottom of the reciprocating groove (4).

2. The pyrotechnic powder filling machine according to claim 1, characterized in that, The motor (20) is connected to the material distribution wheel (19) for transmission. The material distribution wheel (19) is provided with a push plate (21) that pushes the material into each distribution hole (8).

3. The pyrotechnic powder filling machine according to claim 1, characterized in that, The quantitative feeding device also includes a sieving assembly (22), which includes a transition cylinder (23), a transition cylinder telescopic cylinder (24), a sieving wheel (25), a sieving plate (26), and a screen. The upper end of the transition cylinder (23) is connected to the input end of the feeding device, and the lower end is connected to the material cylinder (3). The sieving plate (26) is installed between the transition cylinder (23) and the material cylinder (3). The sieving plate (26) is provided with a plurality of sieving holes (27). The screen is installed on the sieving plate (26). The sieving wheel (25) is provided with a sieving scraper (49) that is inclined relative to the sieving plate (26). The transition cylinder telescopic cylinder (24) is installed on the sieving plate (26), and the telescopic end of the transition cylinder (24) is connected to the transition cylinder (23).

4. The pyrotechnic powder filling machine according to any one of claims 1-3, characterized in that, Dust covers (28), U-shaped blocks (29), and sliding rails (30) and sliders (31) that slide against each other are installed at both ends of the reciprocating groove (4). The sliding rails (30) and sliders (31) are arranged inside the dust cover (28). The lower end of the dust cover (28) is open. One side of the dust cover (28) slides into the U-shaped block groove (32) of the U-shaped block (29). One side of the U-shaped block (29) is installed on the slider (31), and the other side is installed in the reciprocating groove (4).

5. The pyrotechnic powder filling machine according to any one of claims 1-3, characterized in that, An anti-blocking device (36) is provided on one side of the material cylinder (3) on the reciprocating groove (4). The anti-blocking device (36) includes an anti-blocking telescopic cylinder (37) and an anti-blocking mounting plate (38). An anti-blocking rod (39) corresponding to the material distribution hole (8) is provided on the anti-blocking mounting plate (38). The outer diameter of the anti-blocking rod (39) is smaller than the inner diameter of the material distribution hole (8).

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