Gunpowder filling device in shell for firework production

Abstract

The invention discloses a gunpowder filling device in a shell for firework production, which relates to the field of firework production and comprises a positioning frame, an air cylinder is arranged on the positioning frame, a piston rod of the air cylinder is fixedly connected with an injection frame, a cover plate is arranged on the injection frame, symmetrically distributed vibrators are mounted on the outer wall of the injection frame, and a partition plate is fixedly connected in the injection frame. And electric push rods which are symmetrically distributed are mounted between the partition plate and the top wall of the injection frame. Through the synergistic effect of the vibrator and the rotary scraping frame, the uniformity and precision of gunpowder filling are remarkably improved, closed-loop management of material flowing is achieved through an innovative linkage control system, a sliding plate automatically blocks a feeding port to avoid accumulation, a pushing wafer accurately and quantitatively conducts discharging, and the gunpowder leakage rate is reduced through the dual leakage-proof design of a blocking circular plate; and meanwhile, the risks of static accumulation and friction sparks are effectively eliminated, and the production safety is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of fireworks production, and particularly to a gunpowder filling device inside a casing for fireworks production. Background Art

[0002] As a typical field integrating traditional craftsmanship and modern industrial manufacturing technology, the gunpowder filling link in fireworks production is the core process determining the firing effect and safety of products. The gunpowder filling device needs to accurately and evenly fill powdery or granular gunpowder into the fireworks casing in a closed environment, not only meeting the strict requirements for the accuracy of the filling amount, but also avoiding the risk of combustion and explosion caused by friction, static electricity or leakage.

[0003] However, there are many deficiencies in the traditional gunpowder filling device inside the casing for fireworks production. First of all, as a non-Newtonian fluid, the flow characteristics of gunpowder are extremely sensitive to environmental temperature and humidity. When the environmental humidity exceeds 60%, the viscosity of gunpowder particles increases significantly after absorbing moisture, and it is easy to form lumps and blockages in the injection pipe, resulting in uneven flow velocity or even flow interruption. This problem not only reduces the filling efficiency, but also may cause potential safety hazards due to pressure accumulation. On the contrary, in a dry environment with a humidity lower than 30%, the static charge generated by the friction between the gunpowder and the inner wall of the injection pipe can reach 3 - 5 kV, further exacerbating the problem of powder adsorption and residue. Experimental data shows that the single-tube residue can reach 3% - 5%, which not only causes waste of gunpowder, but also makes it difficult to accurately maintain the same gunpowder filling amount in each fireworks tube of the same filling batch. Secondly, traditional equipment usually adopts the method of synchronous operation of multiple injection pipes during the filling process to improve production efficiency.

[0004] However, due to the lack of precise control over the insertion depth and starting time of the injection pipes, there are often phenomena of gunpowder leakage or premature injection, further expanding the deviation of the filling amount. This fluctuation in the filling amount not only affects the firing height and timing synchronization of the fireworks, but also greatly reduces the visual effect, and cannot meet the requirements of modern fireworks shows for high precision and high quality. Summary of the Invention

[0005] In order to overcome the above technical problems existing in the traditional gunpowder filling device, the present invention provides a gunpowder filling device inside a casing for fireworks production.

[0006] A gunpowder filling device inside a housing for firecracker production, comprising a positioning frame with a number of mounting holes thereon. A cylinder is provided on the positioning frame, and a feeding frame is fixedly connected to the piston rod of the cylinder. A cover plate is provided on the feeding frame, and symmetrically distributed vibrators are installed on the outer wall of the feeding frame. A partition is fixedly connected inside the feeding frame, and symmetrically distributed electric push rods are installed between the partition and the top wall of the feeding frame. A pushing frame is fixedly connected between the telescopic ends of the symmetrically distributed electric push rods. A blocking frame is slidably connected to the partition, and symmetrically distributed springs are connected between the blocking frame and the partition. Each spring is wound around the blocking frame, and the blocking frame is slidably connected to the pushing frame. A number of first tension springs are connected between the blocking frame and the pushing frame, and each first tension spring is wound around the pushing frame.

[0007] Further, symmetrically distributed feed pipes are provided on the side wall of the feeding frame, and a number of discharge pipes are provided on the bottom wall of the feeding frame.

[0008] Further, the pushing frame and the blocking frame both slide vertically inside the discharge pipes. The bottom of the pushing frame is provided with pushing discs equal in number to the discharge pipes, and the diameter of the discs matches the inner diameter of the discharge pipes.

[0009] Further, the bottom of the blocking frame is provided with sealing discs equal in number to the discharge pipes, and the sealing discs are used to control the opening and closing of the discharge pipes.

[0010] Further, symmetrically distributed baffles are fixedly connected to the bottom of the partition. Symmetrically distributed sliding plates are slidably connected to the partition. Symmetrically distributed second tension springs are connected between each sliding plate and the partition, and each symmetrically distributed second tension spring is wound around the adjacent sliding plate and is always in a stretched state. The pushing frame is in pressing fit with both sliding plates.

[0011] Further, feed inlets are provided between the symmetrically distributed baffles and the inner side of the bottom wall of the feeding frame, and the sliding plates are used to control the opening and closing of the feed inlets.

[0012] Further, symmetrically distributed motors are installed on the bottom wall of the feeding frame. The output shaft of each motor is fixedly connected with a scraping frame through a coupling. Pressure sensors are installed at the bottom of each sliding plate, and the sensors are electrically connected to the motors through a control module.

[0013] Further, magnetic contact frames are provided between the two scraping frames along the longitudinal direction. Magnets are fixedly connected to the inner bottom wall of each scraping frame, and the magnets are in magnetic attraction fit with the adjacent magnetic contact frames. Sensors are fixedly connected to the mutually approaching sides of the baffles, and the sensors are electrically connected to the electric push rods through a control module.

[0014] Further, upper guide blocks and lower guide blocks are fixedly connected to each pushing disc, and the upper guide blocks and the lower guide blocks are arranged facing each other.

[0015] The beneficial effects are as follows: Through the synergistic effect of the vibrator and the rotating scraping rack, the present invention significantly improves the uniformity and precision of gunpowder filling. Its innovative linkage control system realizes the closed-loop management of material flow. The sliding plate automatically seals the feeding port to avoid accumulation, the pushing disc precisely measures and discharges materials, and the double anti-leakage design of the sealing disc reduces the gunpowder leakage rate, improves the single filling efficiency, effectively eliminates the risk of static electricity accumulation and frictional sparks, and significantly improves production safety.

[0016] Through the synergistic effect of the upper guide block and the lower guide block, the present invention not only effectively reduces the running resistance of the pushing rack, but also ensures the accuracy and consistency during the gunpowder filling process, improving the overall production quality and efficiency. Brief Description of the Drawings

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of components such as the vibrator, electric push rod, and pushing rack of the present invention.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the electric push rod and the pushing rack of the present invention.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of components such as the spring, pushing rack, blocking rack, and first tension spring of the present invention.

[0021] Figure 5 It is a three-dimensional structural schematic diagram of components such as the baffle, sliding plate, and second tension spring of the present invention.

[0022] Figure 6 It is a cross-sectional view of the three-dimensional structure of components such as the injection rack, motor, and scraping rack of the present invention.

[0023] Figure 7 It is a three-dimensional structural schematic diagram of components such as the baffle, sensor, and magnetic contact rack of the present invention.

[0024] Figure 8 It is a cross-sectional view of the three-dimensional structure of components such as the sensor, magnetic contact rack, and magnet of the present invention.

[0025] Figure 9 It is a three-dimensional structural schematic diagram of components such as the pushing rack, blocking rack, upper guide block, and lower guide block of the present invention.

[0026] In the reference numerals: 1 - positioning rack, 2 - injection rack, 201 - partition board, 3 - cover plate, 4 - vibrator, 5 - electric push rod, 6 - pushing rack, 7 - blocking rack, 701 - spring, 8 - first tension spring, 9 - baffle, 10 - sliding plate, 11 - second tension spring, 12 - motor, 13 - scraping rack, 14 - sensor, 15 - magnetic contact rack, 16 - magnet, 17 - upper guide block, 18 - lower guide block. Detailed Embodiments

[0027] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Embodiment 1: A gunpowder filling device inside a casing for firework production, as Figures 1-4 shown, includes a positioning frame 1 with a number of mounting holes thereon for fixing the entire device on a workbench or a conveying assembly. A cylinder is provided on the positioning frame 1, and a feeding frame 2 is fixedly connected to the piston rod of the cylinder. The feeding frame 2 is controlled by the cylinder to move up and down to achieve precise docking with the firework casing. Symmetrically distributed feeding pipes are provided on the side wall of the feeding frame 2 for conveying materials such as gunpowder from the outside into the interior of the feeding frame 2.

[0029] A number of discharge pipes are provided on the bottom wall of the feeding frame 2 for precisely injecting materials into the single tubes of the firework casing. A cover plate 3 is provided on the feeding frame 2 to enclose the front side of the feeding frame 2, facilitating cleaning of the interior of the feeding frame 2. Symmetrically distributed vibrators 4 are installed on the outer wall of the feeding frame 2. Through the vibration generated by the vibrators 4, the lumps in the materials can be effectively dispersed to ensure smooth flow of the materials. A partition 201 is fixedly connected inside the feeding frame 2 for dividing the interior of the feeding frame 2 into upper and lower compartments. Symmetrically distributed electric push rods 5 are installed between the partition 201 and the top wall of the feeding frame 2, and a push frame 6 is fixedly connected between the telescopic ends of the symmetrically distributed electric push rods 5.

[0030] The push frame 6 serves as the main pushing mechanism and is responsible for pushing the materials from inside the feeding frame 2 into the firework casing. A blocking frame 7 is slidably connected to the partition 201, and symmetrically distributed springs 701 are connected between the blocking frame 7 and the partition 201. Each spring 701 is wound around the blocking frame 7 to provide elastic force to ensure that the blocking frame 7 can automatically reset. The blocking frame 7 is slidably connected to the push frame 6, and a number of first tension springs 8 are connected between the blocking frame 7 and the push frame 6. Each first tension spring 8 is wound around the push frame 6 to enhance the linkage between the blocking frame 7 and the push frame 6 and ensure coordinated movement of the two.

[0031] The push frame 6 slides vertically inside the discharge pipe, and the pushing operation of the materials is achieved by the up and down movement of the push frame 6. The bottom of the push frame 6 is provided with push discs equal in number to the discharge pipes, and the diameter of the discs matches the inner diameter of the discharge pipes to ensure that the push discs can closely fit the inner wall of the discharge pipes to avoid material residue or leakage. The bottom of the blocking frame 7 is provided with blocking circular plates equal in number to the discharge pipes, and the blocking circular plates are used to control the opening and closing of the discharge pipes. When the blocking circular plates are closed, the outflow of materials can be effectively blocked; when the blocking circular plates are opened, the materials can smoothly enter the firework casing through the discharge pipes.

[0032] As Figure 5As shown in the figure, symmetrically distributed baffles 9 are fixedly connected to the bottom of the partition plate 201, which are used to separate the internal space of the material injection rack 2 to prevent the materials from getting mixed up during the filling process. Symmetrically distributed sliding plates 10 are connected to the partition plate 201 in a sliding manner. Symmetrically distributed second tension springs 11 are connected between each sliding plate 10 and the partition plate 201. The symmetrically distributed second tension springs 11 are all wound around the adjacent sliding plates 10 and are always in a stretched state. The second tension springs 11 provide elastic force to ensure that the sliding plates 10 can automatically reset and closely fit the surface of the partition plate 201. The pushing rack 6 is in extrusion fit with both sliding plates 10. Inlet openings are provided between the symmetrically distributed baffles 9 and the inner side of the bottom wall of the material injection rack 2. The sliding plates 10 are used to control the opening and closing of the inlet openings. When the sliding plates 10 move upward, the inlet openings are opened, and the materials can enter the interior of the material injection rack 2 through the inlet openings. When the sliding plates 10 reset, the inlet openings are closed to prevent the materials from continuing to flow inwards.

[0033] As Figure 6 shown in the figure, symmetrically distributed motors 12 are installed on the bottom wall of the material injection rack 2. The output shaft of each motor 12 is fixedly connected with a scraping rack 13 through a coupling. Pressure sensors are installed at the bottom of each sliding plate 10. The sensors are electrically connected to the motors 12 through a control module. The pressure sensors are used to detect the pressure received by the sliding plates 10 and transmit signals to the control module, thereby controlling the start and stop of the motors 12 to ensure that the scraping racks 13 can perform the material scraping operation at an appropriate time.

[0034] As Figure 7 and Figure 8 shown in the figure, magnetic contact racks 15 are provided between the two scraping racks 13 along the longitudinal direction. Magnets 16 are fixedly connected to the inner bottom wall of each scraping rack 13. The magnets 16 are in magnetic attraction fit with the adjacent magnetic contact racks 15. Inductors 14 are fixedly connected to the mutually adjacent sides of the baffles 9. The inductors 14 are electrically connected to the electric push rods 5 through a control module. The magnetic contact racks 15 move upward under the jacking action of the accumulated materials, triggering the inductors 14, and then starting the electric push rods 5 through the control module to realize the automatic pushing action of the pushing rack 6.

[0035] During use, first, fix this device on the conveying component through the mounting holes and connect the feeding pipe with the feeding pipe of the material injection rack 2. The materials enter the interior of the material injection rack 2 through the feeding pipe and converge towards the middle of the material injection rack 2 along the inlet openings between the baffles 9 and the bottom wall of the material injection rack 2.

[0036] Turn on the vibrator 4 and the motors 12. The vibrator 4 conducts vibrations to the materials through the side wall of the material injection rack 2, causing the materials to be shaken loose and continuously surging towards the inlet openings to the middle of the material injection rack 2. At the same time, the motors 12 drive the scraping racks 13 to rotate, and the rotating scraping racks 13 evenly dial the incoming materials into the discharge pipe. Through the coordinated action of the vibrator 4 and the scraping racks 13, the materials are continuously introduced into the discharge pipe.

[0037] Place the firework shell on the conveying assembly. When the firework shell is conveyed to the bottom of the discharge pipe of the injection rack 2, the cylinder on the positioning rack 1 is controlled to drive the injection rack 2 to move downward until the discharge pipe is inserted into the firework shell, and then the cylinder pauses.

[0038] Once the discharge pipe is filled with material, as it continues to flow from the feed port toward the center of the injection frame 2, it gradually pushes the magnetic contact frame 15 upward, away from the magnet 16. When the magnetic contact frame 15 contacts the sensor 14, the electric push rod 5 is triggered, driving the push frame 6 downward. The push frame 6 no longer supports the slide 10. Under the elastic force of the second tension spring 11, the slide 10 automatically moves downward to block the feed port, preventing excessive material accumulation from interfering with the operation of the push frame 6 and the retaining frame 7. At this point, the slide 10 presses against the injection frame 2, and its built-in pressure sensor, upon receiving pressure, controls the control module to stop the rotation of the motor 12.

[0039] As the push frame 6 moves downward, it moves downward relative to the retaining frame 7, stretching the first tension spring 8. When the push disc of the push frame 6 enters the discharge pipe, the tension of the first tension spring 8 is greater than the elastic force of the spring 701. The push frame 6 continues to move downward, driving the retaining frame 7 as a whole downward via the first tension spring 8. The spring 701 is deformed, and the blocking disc of the retaining frame 7 extends from the discharge pipe to open the outlet.

[0040] The push disc on the push frame 6 continues to move downward, pushing the material in the feed pipe downward, and the material is pushed out of the discharge pipe outlet into the firework shell. When the material in the discharge pipe is pushed out, the electric push rod 5 drives the push frame 6 to move upward and reset. Under the elastic force of the spring 701 and the first tension spring 8, the blocking frame 7 also moves upward and resets, and the blocking disc of the blocking frame 7 blocks the discharge pipe outlet again.

[0041] When pusher 6 returns to its original position, it pushes slide 10 upward again, causing it to slide upward and open the feed opening between baffle 9 and injection rack 2. Second tension spring 11 returns to its initial stretched state, and the material between baffle 9 and the inner wall of injection rack 2 continues to flow into the discharge pipe entrance. At the same time, the built-in pressure sensor of slide 10 is no longer under pressure, and the control module activates motor 12, causing scraper 13 to rotate again and push the material into the discharge pipe. The material no longer supports magnetic contact rack 15. Under the action of its own gravity and the magnetic force of magnet 16, magnetic contact rack 15 moves downward to reset and separate from sensor 14.

[0042] Finally, the cylinder on the positioning frame 1 is controlled to drive the material injection frame 2 to move upward until the discharge pipe exits from the firework shell. The firework shell filled with materials continues to be conveyed to the right and enters the next process. In summary, through the synergistic effect of the vibrator 4 and the rotating scraping frame 13, the uniformity and accuracy of gunpowder filling are significantly improved. Its innovative linkage control system realizes the closed-loop management of material flow. The slide plate 10 automatically seals the feeding port to avoid accumulation. The pushing disc accurately measures and discharges materials. The double anti-leakage design of the sealing disc reduces the gunpowder leakage rate, improves the single filling efficiency, and effectively eliminates the risks of static electricity accumulation and frictional sparks, significantly enhancing the production safety.

[0043] Embodiment 2: On the basis of Embodiment 1, as Figure 9 shown, an upper guide block 17 and a lower guide block 18 are fixedly connected to each pushing disc. The upper guide block 17 and the lower guide block 18 are arranged facing each other. The upper guide block 17 is used to guide the material flow direction, while the lower guide block 18 is responsible for pushing the material forward. The two work together to improve the filling efficiency and accuracy.

[0044] When the pushing frame 6 moves up and down, the upper guide block 17 and the lower guide block 18 fixedly connected to the pushing disc move up and down synchronously. When the pushing disc moves downward into the discharge pipe, the downwardly tapered lower guide block 18 enters the discharge pipe first. Due to its special structure, the resistance when the lower guide block 18 enters is relatively small, and it can effectively extrude the excess material overflowing at the entrance of the discharge pipe outward, thus ensuring that there is no excess material accumulation at the entrance of each discharge pipe, ensuring the uniform distribution of materials in each discharge pipe, and realizing the consistency of the gunpowder filling amount in each single pipe of the firework shell.

[0045] At the same time, after the upwardly tapered upper guide block 17 enters the discharge pipe along with the pushing disc, it can accurately cover the entrance of the discharge pipe, prevent the excess material from falling onto the pushing disc, significantly reduce the resistance when the pushing disc moves up and down, and optimize the operation efficiency and stability of the device. In summary, through the synergistic effect of the upper guide block 17 and the lower guide block 18, not only the running resistance of the pushing frame 6 is effectively reduced, but also the accuracy and consistency in the gunpowder filling process are ensured, improving the overall production quality and efficiency.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes may be made therein without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A gunpowder filling device inside a shell for flower firecracker production, comprising a positioning frame (1) with a number of mounting holes formed thereon. A cylinder is provided on the positioning frame (1), and a feeding frame (2) is fixedly connected to the piston rod of the cylinder. A cover plate (3) is provided on the feeding frame (2), and symmetrically distributed vibrators (4) are installed on the outer wall of the feeding frame (2). A partition plate (201) is fixedly connected inside the feeding frame (2), and symmetrically distributed electric push rods (5) are installed between the partition plate (201) and the top wall of the feeding frame (2). A pushing frame (6) is fixedly connected between the telescopic ends of the symmetrically distributed electric push rods (5). It is characterized in that, A retaining frame (7) is slidably connected to the partition plate (201). Symmetrically distributed springs (701) are connected between the retaining frame (7) and the partition plate (201). Each spring (701) is wound around the retaining frame (7). The retaining frame (7) is slidably connected to the pushing frame (6). A number of first tension springs (8) are connected between the retaining frame (7) and the pushing frame (6). Each first tension spring (8) is wound around the pushing frame (6).

2. The gunpowder filling device inside the casing for firecracker production according to claim 1, characterized in that, Symmetrically distributed feed pipes are provided on the side wall of the feeding frame (2). A number of discharge pipes are provided on the bottom wall of the feeding frame (2).

3. The gunpowder filling device inside the housing for firework production according to claim 2, characterized in that the push The frame (6) and the retaining frame (7) both slide vertically in the discharge pipes. The bottom of the pushing frame (6) is provided with pushing discs equal in number to the discharge pipes. The diameter of the discs matches the inner diameter of the discharge pipes.

4. The gunpowder filling device inside the housing for firecracker production according to claim 3, characterized in that, The bottom of the retaining frame (7) is provided with plugging circular plates equal in number to the discharge pipes. The plugging circular plates are used to control the opening and closing of the discharge pipes.

5. The gunpowder filling device inside the housing for firecracker production as described in claim 4, characterized in that, Symmetrically distributed baffles (9) are fixedly connected to the bottom of the partition plate (201). Symmetrically distributed sliding plates (10) are slidably connected to the partition plate (201). Symmetrically distributed second tension springs (11) are connected between each sliding plate (10) and the partition plate (201). The symmetrically distributed second tension springs (11) are all wound around the adjacent sliding plates (10) and are always in a stretched state. The pushing frame (6) is in pressing fit with both sliding plates (10).

6. The gunpowder filling device inside the casing for firecracker production as described in claim 5, characterized in that, Inlet openings are provided between the symmetrically distributed baffles (9) and the inner side of the bottom wall of the feeding frame (2). The sliding plates (10) are used to control the opening and closing of the inlet openings.

7. The gunpowder filling device inside the shell for firecracker production according to claim 6, characterized in that, Symmetrically distributed motors (12) are installed on the bottom wall of the feeding frame (2). The output shaft of each motor (12) is fixedly connected to a scraping frame (13) through a coupling. Pressure sensors are installed at the bottom of each sliding plate (10). The sensors are electrically connected to the motors (12) through a control module.

8. The gunpowder filling device inside the casing for firecracker production according to claim 7, characterized in that, Magnetic contact frames (15) are provided between the two scraping frames (13) along the longitudinal direction. Magnets (16) are fixedly connected to the inner bottom wall of each scraping frame (13). The magnets (16) are in pin fit with the adjacent magnetic contact frames (15). Sensors (14) are fixedly connected to the mutually approaching sides of the baffles (9). The sensors (14) are electrically connected to the electric push rods (5) through a control module.

9. The gunpowder filling device inside the casing for firecracker production according to claim 8, characterized in that, Upper guide blocks (17) and lower guide blocks (18) are fixedly connected to each pushing disc. The upper guide blocks (17) and the lower guide blocks (18) face each other.

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