Firework inner tube production line

Abstract

The application relates to a firework inner tube production line, which comprises a conveying belt for conveying inner tube shells and an oxidant filling device, a reducing agent filling device, a mixing device and a sealing powder filling device arranged along the conveying belt in sequence; the oxidant filling device is used for feeding multiple oxidant components, pre-mixing and then filling the reducing agent mixture into the inner tube shells on the conveying belt; the reducing agent filling device is used for feeding multiple reducing agent components, pre-mixing and then filling the reducing agent mixture into the inner tube shells on the conveying belt; the mixing device is used for overturning the inner tube shells, mixing the oxidant mixture and the reducing agent mixture filled in the inner tube shells; and the sealing powder filling device is used for filling sealing powder into the inner tube shells on the conveying belt.

Description

Technical Field

[0001] This application belongs to the field of fireworks manufacturing technology and relates to a fireworks inner tube production line. Background Technology

[0002] The inner cylinder of a fumigation system includes an inner shell and bright beads and explosives filled inside the inner shell. The explosives include an oxidizer and a reducing agent. The oxidizer is composed of potassium permanganate and barium nitrate, while the reducing agent is composed of sulfur, silver powder, and carbon powder. Currently, the bright beads and explosives in the inner shell of the fumigation system are filled manually. Manual filling requires mixing the explosives first. The mixed explosives are prone to explosion during transportation and filling, posing a significant safety hazard. It also produces a lot of dust and has low production efficiency. Utility Model Content

[0003] This application aims to provide a fumigation inner cylinder production line that separately fills the various components of the explosive, reducing the risk, and adopts automatic mixing and automatic loading to reduce dust, reduce the risk of manual operation, and improve production efficiency.

[0004] This application is achieved through the following technical solution.

[0005] This technical solution provides a fireworks inner tube production line, including a conveyor belt for conveying the inner tube shell, and an oxidant filling device, a reducing agent filling device, a mixing device, and a sealing powder filling device arranged sequentially along the conveyor belt; wherein...

[0006] The oxidant loading device is used to feed multiple oxidant components and pre-mix them before loading the reducing agent mixture into the inner cylinder shell on the conveyor belt;

[0007] The reducing agent filling device is used to feed multiple reducing agent components and pre-mix them before filling the reducing agent mixture into the inner cylinder shell on the conveyor belt;

[0008] The mixing device is used to flip the inner cylinder shell to mix the oxidant mixture and reducing agent mixture filled inside it;

[0009] The sealing powder filling device is used to fill the sealing powder into the inner cylinder shell on the conveyor belt.

[0010] The fireworks inner tube production line of this technical solution adopts the method of feeding each component of the explosive separately and mixing them before filling to reduce the danger. The production line is an automatic mixing and filling line. The operator only needs to feed the oxidizer and reducing agent components. The mixing and filling process is fully enclosed to reduce dust, reduce the danger of manual operation, and improve production efficiency.

[0011] In one or more embodiments of this technical solution, the oxidant loading device includes a first feeding mechanism, a first weighing mechanism, a first premixing mechanism, and a first loading mechanism; wherein

[0012] The first feeding mechanism includes multiple components, each used for feeding the oxidant components;

[0013] The first weighing mechanism is provided for each of the first feeding mechanisms, and is used to receive the oxidant components output by the first feeding mechanism, weigh them quantitatively, and output them to the first premixing mechanism;

[0014] The first premixing mechanism is used to premix multiple oxidant components into a mixture, and then output it to the first filling mechanism;

[0015] The first filling mechanism is used to fill the oxidant mixture into the inner cylinder shell on the conveyor belt.

[0016] In one or more embodiments of this technical solution, the first feeding mechanism includes a vibrating screen, which is used to receive the feeding of each oxidant component, and after vibration dispersion, convey it to the corresponding first weighing mechanism.

[0017] In one or more embodiments of this technical solution, the first weighing mechanism includes a weighing hopper and a weighing sensor. The weighing hopper is used to hold an oxidant component, and the weighing hopper is supported by at least one of the weighing sensors, which are used to detect the weight of the oxidant component in the weighing hopper.

[0018] In one or more embodiments of this technical solution, the first premixing mechanism includes a mixing tank and a motor. The mixing tank is equipped with a stirring blade, and the motor is connected to the stirring blade for transmission. The stirring blade rotates to mix the various oxidant components. The mixing tank is equipped with an inlet and an outlet, and the outlet is equipped with a switch.

[0019] In one or more embodiments of this technical solution, the first filling mechanism includes a positioning clamp, a quantitative dispensing component, and a vibrating hopper;

[0020] The positioning clamp is used to clamp and position the inner cylinder shell to fix its position;

[0021] The quantitative dispensing assembly includes a base plate with a quantitative hole and a switch baffle, the switch baffle being used to close or open the lower opening of the quantitative hole;

[0022] The vibrating hopper is movable and is used to introduce the oxidant mixture into the bottom plate and scrape the oxidant mixture into the metering orifice.

[0023] When the switch baffle is in the open position of the metering orifice, the oxidant mixture in the metering orifice falls into the inner cylinder shell.

[0024] In one or more embodiments of this technical solution, the reducing agent filling device includes a second feeding mechanism, a second weighing mechanism, a second premixing mechanism, and a second filling mechanism; wherein

[0025] The second feeding mechanism includes multiple components, each used for feeding the reducing agent components;

[0026] The second weighing mechanism is provided for each of the second feeding mechanisms, and is used to receive the reducing agent components output by the second feeding mechanism, weigh them quantitatively, and output them to the second premixing mechanism;

[0027] The second premixing mechanism is used to premix multiple reducing agent components into a mixture, and then output it to the second filling mechanism;

[0028] The second filling mechanism is used to fill the reducing agent mixture into the inner cylinder shell on the conveyor belt.

[0029] In one or more embodiments of this technical solution, the sealing powder filling device includes a feeding hopper and a third filling mechanism. The feeding hopper is used to hold the sealing powder and convey it to the third filling mechanism, which is used to fill the sealing powder into the inner cylinder shell on the conveyor belt.

[0030] In one or more embodiments of this technical solution, a pressing device is further provided after the sealing powder filling device, the pressing device being used to press the sealing powder filled in the inner cylinder shell.

[0031] In one or more embodiments of this technical solution, a feeding belt and a material distribution and blocking mechanism located at the rear end of the feeding belt are also included. The feeding belt is used to receive the inner cylinder shells, and the material distribution and blocking mechanism is used to distribute the inner cylinder shells on the feeding belt to the conveyor belt.

[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0033] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0034] Figure 1 This is a top view of a fireworks inner tube production line shown in one embodiment of this application.

[0035] Figure 2 This is a perspective view of a fireworks inner tube production line shown in one embodiment of this application.

[0036] Figure 3 This is a perspective view of the first feeding mechanism, the first weighing mechanism, and the first premixing mechanism shown in one embodiment of this application.

[0037] Figure 4 This is one of the perspective views of the first loading mechanism shown in one embodiment of this application.

[0038] Figure 5 This is a second perspective view of the first loading mechanism shown in one embodiment of this application.

[0039] Figure 6 This is a partial cross-sectional view of the first loading mechanism shown in one embodiment of this application.

[0040] Figure 7 This is a perspective view of a mixing device shown in one embodiment of this application.

[0041] Figure 8 This is a perspective view of the clamping device shown in one embodiment of this application.

[0042] Figure 9 This is a structural view of the stacking mechanism and discharge belt shown in one embodiment of this application.

[0043] Explanation of reference numerals in the attached figures:

[0044] Inner shell 10;

[0045] 20-Conveyor belt; 21-Feeding belt; 22-Distribution and blocking mechanism; 23-Stacking mechanism; 24-Discharge belt;

[0046] 30-Oxidizing agent loading device; 31-First feeding mechanism; 311-Vibrating screen; 32-First weighing mechanism; 321-Weighing hopper; 322-Weighing sensor; 33-First premixing mechanism; 331-Mixing box; 332-Mixing motor; 34-First loading mechanism; 341-Positioning clamp; 342-Quantitative dispensing component; 3421-Base plate; 3422-Switch baffle; 343-Vibrating hopper; 3431-Hopper shell; 3432-Brush;

[0047] 40 - Reducing agent filling device; 41 - Second feeding mechanism; 42 - Second weighing mechanism; 43 - Second premixing mechanism; 44 - Second filling mechanism;

[0048] 50 - Mixing device; 51 - Fixing frame; 52 - Top cover; 521 - Recessed hole; 53 - Tilting motor;

[0049] 60 - Sealing powder filling device; 61 - Feeding hopper; 62 - Third filling mechanism;

[0050] 70 - Clamping device. Detailed Implementation

[0051] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0053] like Figures 1 to 9 As shown in the figure, this embodiment is a fireworks inner tube production line, including a conveyor belt 20 for conveying the inner tube shell 10, and an oxidant filling device 30, a reducing agent filling device 40, a mixing device 50, a sealing powder filling device 60, and a pressing device 70 arranged sequentially along the conveyor belt 20; wherein,

[0054] The oxidant loading device 30 is used to feed multiple oxidant components and pre-mix them before loading the reducing agent mixture into the inner cylinder shell 10 on the conveyor belt 20;

[0055] The reducing agent filling device 40 is used to feed multiple reducing agent components and pre-mix them before filling the reducing agent mixture into the inner cylinder shell 10 on the conveyor belt 20.

[0056] The mixing device 50 is used to flip the inner cylinder shell 10 so that the oxidant mixture and the reducing agent mixture filled inside it can be mixed.

[0057] The sealing powder filling device 60 is used to fill the sealing powder into the inner cylinder shell 10 on the conveyor belt 20;

[0058] The pressing device 70 is used to press the sealing powder filled in the inner cylinder shell 10.

[0059] In this way, the fireworks inner tube production line adopts the method of feeding each component of the explosive separately and mixing them before filling to reduce the risk. The production line is an automatic mixing and filling line. The operator only needs to feed the oxidizer and reducing agent components. The mixing and filling process is fully enclosed to reduce dust, reduce the risk of manual operation, and improve production efficiency.

[0060] It should be noted that the inner shell 10 is a cylindrical shape with an open top. In order to improve production efficiency, multiple inner shells 10 will be fixed together to form a disc shape. In this embodiment, the inner shell 10 should be understood as an assembly of multiple inner shells 10 fixed together, and the cross-section of the assembly is a regular hexagon.

[0061] In this embodiment, the conveyor belt 20 is used to transport the inner cylinder shell 10 through various devices. The conveyor belt 20 includes a conveyor belt and a drive motor. The drive motor is used to drive the conveyor belt to rotate. The inner cylinder shell 10 is placed on the conveyor belt. The conveyor belt 20 can be divided into multiple segments for transport. Each segment can be set for each device. When the inner cylinder shell 10 is working, the current segment can be stopped and segmented control can be implemented without affecting each other.

[0062] In this embodiment, the oxidant loading device 30 includes a first feeding mechanism 31, a first weighing mechanism 32, a first premixing mechanism 33, and a first loading mechanism 34; wherein...

[0063] The first feeding mechanism 31 is used for feeding the oxidant components;

[0064] The first weighing mechanism 32 is provided for each first feeding mechanism 31, and is used to receive the oxidant components output by the first feeding mechanism 31, weigh them quantitatively, and output them to the first premixing mechanism 33.

[0065] The first premixing mechanism 33 is used to premix multiple oxidant components into a mixture, and then output it to the first filling mechanism 34;

[0066] The first filling mechanism 34 is used to quantitatively fill the oxidant mixture into the inner cylinder shell 10 on the conveyor belt 20.

[0067] In this embodiment, two first feeding mechanisms 31 are provided, which are used for feeding potassium permanganate and barium nitrate, respectively. Both potassium permanganate and barium nitrate are in powder form. The first feeding mechanism 31 includes a vibrating screen 311, on which a feeding hopper for pouring is installed. The vibrating screen 311 receives the oxidant components. The operation of the vibrating screen 311 generates vibration and causes the oxidant components to rotate inside. After the oxidant components are dispersed by the vibration of the vibrating screen 311, the powder is conveyed from the outlet through a closed pipe to the corresponding first weighing mechanism 32.

[0068] In this embodiment, the first weighing mechanism 32 includes a weighing hopper 321 and a weighing sensor 322. The weighing hopper 321 has an inlet connected to the first feeding mechanism 31 at the top and an outlet at the bottom. The lower part of the weighing hopper 321 is conical to facilitate discharge. The weighing hopper 321 is filled with oxidant components. The weighing hopper 321 is supported and mounted on a bracket by the weighing sensor 322. The weight of the weighing hopper 321 is known. The weight detected by the weighing sensor 322 minus the weight of the weighing hopper 321 is the weight of the oxidant components. The weighing sensor 322 can detect the weight of the oxidant components in the weighing hopper 321.

[0069] When the weight of the oxidant component inside the weighing hopper 321 reaches the preset value, the first feeding mechanism 31 is controlled to stop feeding into the weighing hopper 321. The outlet of the weighing hopper 321 is equipped with a switch valve. The switch valve is closed when the weighing hopper 321 is being loaded and opened when the weighing hopper 321 is being unloaded. The type of switch valve can be selected and set according to actual needs.

[0070] In this embodiment, the first premixing mechanism 33 includes a mixing tank 331 and a mixing motor 332. The mixing tank 331 is equipped with stirring blades, and the mixing motor 332 is connected to the stirring blades via a drive mechanism. The rotation of the stirring blades mixes the various oxidant components to obtain an oxidant mixture. The mixing tank 331 has an inlet and an outlet, with a switch gate at the outlet. There are two inlets, each connected to the outlet of one of the two first weighing mechanisms 32 via a closed pipe. After the oxidant mixture is discharged from the outlet, it is transported to the first filling mechanism 34 via a conveying device or a closed pipe.

[0071] In this embodiment, the first filling mechanism 34 is disposed above the conveyor belt 20. The first filling mechanism 34 includes a positioning clamp 341, a quantitative dispensing component 342, and a vibrating hopper 343343. The positioning clamp 341 is used to clamp and position the inner cylinder shell 10 to fix its position. When the inner cylinder shell 10 reaches the designated position, the conveyor belt 20 stops, and the positioning clamp 341 clamps the inner cylinder shell 10 on the conveyor belt 20 to position and fix it.

[0072] The quantitative dispensing component 342 is positioned above the positioning fixture 341. The quantitative dispensing component 342 adopts a volumetric dispensing method. The quantitative dispensing component 342 includes a base plate 3421 with a dispensing hole and a switch baffle 3422. The switch baffle 3422 can move relative to the base plate 3421. The switch baffle 3422 is used to close or open the lower opening of the dispensing hole. When the switch baffle 3422 is in the open dispensing hole position, the oxidant mixture in the dispensing hole falls into the inner cylinder shell 10.

[0073] The switch baffle 3422 is preset to be closed. When the inner cylinder shell 10 is fixed by the positioning clamp 341, the quantitative dispensing component 342 moves down as a whole and presses against the inner cylinder shell 10, so that the lower opening of the quantitative hole corresponds and connects with the upper opening of the inner cylinder shell 10. The switch baffle 3422 moves, and the oxidant mixture in the quantitative hole falls into the inner cylinder shell 10. A stopper rod can also be set to be inserted from the top of the quantitative hole to prevent the oxidant mixture from not being discharged.

[0074] A vibrating hopper 343343 is movably positioned above the metering dispensing assembly 342. The vibrating hopper 343343 is used to guide the oxidant mixture onto the bottom plate 3421 and scrape the oxidant mixture into the metering orifice. The vibrating hopper 343343 includes a hopper shell 3431, a brush 3432, and a scraper. The hopper shell 3431 has an open-bottom shell structure. The brush 3432 and a vibrator are mounted on the hopper shell 3431. The scraper is located inside the hopper shell 3431. The inlet of the hopper shell 3431 receives the oxidant mixture from the first premixing mechanism 33, causing the oxidant mixture to fall onto the bottom plate 3421.

[0075] The oxidant filling device 30 can achieve fully enclosed operation to prevent dust generation during the filling process. It adopts weighing and quantitative control of raw material ratio, and after mixing, it ensures that the output product ratio is uniform. It uses volumetric quantitative feeding to achieve efficient filling.

[0076] In this embodiment, the reducing agent filling device 40 includes a second feeding mechanism 41, a second weighing mechanism 42, a second premixing mechanism 43, and a second filling mechanism 44; wherein

[0077] The second feeding mechanism 41 includes multiple components, each used for feeding the reducing agent components.

[0078] The second weighing mechanism 42 is provided for each second feeding mechanism 41, and is used to receive the reducing agent components output by the second feeding mechanism 41, weigh them quantitatively, and output them to the second premixing mechanism 43.

[0079] The second premixing mechanism 43 is used to premix multiple reducing agent components into a mixture, and then output it to the second filling mechanism 44;

[0080] The second filling mechanism 44 is used to fill the reducing agent mixture into the inner cylinder shell 10 on the conveyor belt 20.

[0081] It should be noted that the reducing agent filling device 40 and the oxidizing agent filling device 30 adopt the same structure. The difference is that the second feeding mechanism 41 and the second weighing mechanism 42 are respectively provided in three parts, to correspond to the feeding and weighing of the three reducing agent components of sulfur, silver powder and carbon powder, which will not be described in detail here.

[0082] In this embodiment, the mixing device 50 is disposed between two sections of the conveyor belt 20. The inner cylinder shell 10, after being filled with the oxidant mixture and the reducing agent mixture, is pushed into the mixing device 50 for tumbling and mixing. The mixing device 50 includes a fixing frame 51, a top cover 52, and a tumbling motor 53.

[0083] The fixing frame 51 is rotatably mounted on the frame and is used to fix the inner cylinder shell 10. The upper cover 52 is raised and lowered on the fixing frame 51 and is provided with a recess 521 corresponding to the opening of each inner cylinder shell 10. When the upper cover 52 is detachably closed on the opening end of the inner cylinder shell 10, the opening of the recess 521 is sealed and connected with the opening end of the inner cylinder shell 10. The flipping motor 53 is used to drive the fixing frame 51 and thereby drive the upper cover 52 and the inner cylinder shell 10 to flip, so that the powder flows back and forth between the recess 521 of the upper cover 52 and the inner cylinder shell 10 during the flipping process.

[0084] Thus, a top cover 52 with a recessed hole 521 is placed on the inner cylinder shell 10, so that the recessed hole 521 on the top cover 52 and the inner cylinder shell 10 are aligned, increasing the usable space for mixing. Then, the top cover 52 and the inner cylinder shell 10 are flipped over, allowing the powder to flow into the recessed hole 521 of the top cover 52 and then back into the inner cylinder shell 10. Repeating this several times can achieve a better mixing effect.

[0085] During the mixing process, the powdered medicine is in a closed space, so there is no dust. The mixing is achieved by a motor driven by a program that controls the rotation. The mixing can be adjusted in multiple angles and frequencies to achieve a perfect mixing effect.

[0086] In this embodiment, the sealing powder filling device 60 includes a feeding hopper 61 and a third filling mechanism 62. The feeding hopper 61 is used to hold the sealing powder and convey it to the third filling mechanism 62. The third filling mechanism 62 is used to fill the sealing powder into the inner cylinder shell 10 on the conveyor belt 20. The third filling mechanism 62 has the same structure and working principle as the second filling mechanism 44, and will not be described again here. In addition, since the sealing powder needs to fill the inner cylinder shell 10 completely, the third filling mechanism 62 can also remove the switch baffle to simplify the structure and does not require a quantitative amount of sealing powder.

[0087] In this embodiment, the production line also includes a feeding belt 21 and a material distribution blocking mechanism 22 located at the rear end of the feeding belt 21. The feeding belt 21 is used to receive the inner cylinder shell 10, and the material distribution blocking mechanism 22 is used to distribute the inner cylinder shell 10 on the feeding belt 21 to the conveyor belt 20.

[0088] In this embodiment, the pressing device 70 is set above the conveyor belt 20. The pressing device 70 presses down the filling material in the inner cylinder shell 10 to achieve the pressing purpose. The pressing device 70 is also provided with a discharge belt 24. If necessary, a stacking mechanism 23 can also be set. After the stacking mechanism 23 stacks the inner cylinder shell 10 into three layers, it is discharged through the discharge belt 24.

[0089] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A firework inner tube production line characterized by, It includes a conveyor belt (20) for conveying the inner cylinder shell (10), and an oxidant filling device (30), a reducing agent filling device (40), a mixing device (50), and a sealing powder filling device (60) arranged sequentially along the conveyor belt (20); wherein The oxidant loading device (30) is used to feed multiple oxidant components and pre-mix them before loading the reducing agent mixture into the inner cylinder shell (10) on the conveyor belt (20); The reducing agent filling device (40) is used to feed multiple reducing agent components and pre-mix them before filling the reducing agent mixture into the inner cylinder shell (10) on the conveyor belt (20); The mixing device (50) is used to flip the inner cylinder shell (10) so that the oxidant mixture and reducing agent mixture filled inside it can be mixed. The sealing powder filling device (60) is used to fill the sealing powder into the inner cylinder shell (10) on the conveyor belt (20).

2. The fireworks inner tube production line according to claim 1, characterized in that, The oxidant loading device (30) includes a first feeding mechanism (31), a first weighing mechanism (32), a first premixing mechanism (33), and a first loading mechanism (34); wherein The first feeding mechanism (31) includes multiple components, each used for feeding the oxidant components; The first weighing mechanism (32) is provided for each of the first feeding mechanisms (31) to receive the oxidant components output by the first feeding mechanism (31) for quantitative weighing and output to the first premixing mechanism (33); The first premixing mechanism (33) is used to premix multiple oxidant components into a mixture and then output it to the first filling mechanism (34); The first filling mechanism (34) is used to fill the oxidant mixture into the inner cylinder shell (10) on the conveyor belt (20).

3. The fireworks inner tube production line according to claim 2, characterized in that, The first feeding mechanism (31) includes a rotary vibrating screen (311), which is used to receive the feeding of each oxidant component, and after vibration dispersion, it is conveyed to the corresponding first weighing mechanism (32).

4. The fireworks inner tube production line according to claim 2, characterized in that, The first weighing mechanism (32) includes a weighing hopper (321) and a weighing sensor (322). The weighing hopper (321) is used to hold the oxidant component. The weighing hopper (321) is supported by at least one of the weighing sensors (322), which is used to detect the weight of the oxidant component in the weighing hopper (321).

5. The fireworks inner tube production line according to claim 3, characterized in that, The first premixing mechanism (33) includes a mixing box (331) and a mixing motor (332). The mixing box (331) is equipped with a stirring blade inside. The mixing motor (332) is connected to the stirring blade in a transmission manner. The stirring blade rotates to mix the various oxidant components. The mixing box (331) is equipped with a feed inlet and a discharge outlet. The discharge outlet is equipped with a switch gate.

6. The fireworks inner tube production line according to claim 2, characterized in that, The first filling mechanism (34) includes a positioning clamp (341), a quantitative dispensing component (342), and a vibrating hopper (343); The positioning clamp (341) is used to clamp and position the inner cylinder shell (10) to fix its position; The quantitative dispensing assembly (342) includes a base plate (3421) with a quantitative hole and a switch baffle (3422), the switch baffle being used to close or open the lower opening of the quantitative hole; The vibrating hopper (343) is movably configured to introduce the oxidant mixture into the bottom plate and scrape the oxidant mixture into the metering orifice; When the switch baffle is in the open position of the metering orifice, the oxidant mixture in the metering orifice falls into the inner shell (10).

7. The fireworks inner tube production line according to claim 2, characterized in that, The reducing agent filling device (40) includes a second feeding mechanism (41), a second weighing mechanism (42), a second premixing mechanism (43), and a second filling mechanism (44); wherein The second feeding mechanism (41) includes multiple components, each used for feeding the reducing agent components; The second weighing mechanism (42) is provided for each of the second feeding mechanisms (41) to receive the reducing agent components output by the second feeding mechanism (41) for quantitative weighing and output to the second premixing mechanism (43); The second premixing mechanism (43) is used to premix multiple reducing agent components into a mixture, and then output it to the second filling mechanism (44); The second filling mechanism (44) is used to fill the reducing agent mixture into the inner cylinder shell (10) on the conveyor belt (20).

8. The fireworks inner tube production line according to claim 2, characterized in that, The sealing powder filling device (60) includes a feeding bin (61) and a third filling mechanism (62). The feeding bin (61) is used to hold the sealing powder and transport it to the third filling mechanism (62). The third filling mechanism (62) is used to fill the sealing powder into the inner cylinder shell (10) on the conveyor belt (20).

9. The fireworks inner tube production line according to claim 1, characterized in that, It also includes a pressing device (70) located after the sealing powder filling device (60), the pressing device being used to press the sealing powder filled in the inner cylinder shell (10).

10. The fireworks inner tube production line according to claim 1, characterized in that, It also includes a feeding belt (21) and a material distribution blocking mechanism (22) located at the rear end of the feeding belt. The feeding belt is used to receive the inner cylinder shell (10) from the feeding belt, and the material distribution blocking mechanism is used to distribute the inner cylinder shell (10) on the feeding belt to the conveyor belt (20).

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