Powder raw material automatic quantitative filling device and method for filling firework inner cylinder

Abstract

The invention discloses an automatic quantitative powder raw material filling device for filling firework inner barrels, which comprises a rack, a turntable device, a stock bin, a quantitative plate device, a punching needle device and a turntable positioning device, the turntable device, the stock bin and the punching needle device are arranged on the rack, the turntable device is provided with a plurality of mounting stations of the quantitative plate device, and the turntable positioning device is arranged on the turntable device. The quantitative plate device comprises a quantitative plate, a valve plate, a quantitative bottom plate and a quantitative plate opening and closing device, a plurality of quantitative holes are formed in the quantitative plate, through holes are correspondingly formed in the valve plate, the quantitative plate opening and closing device controls alignment or dislocation of the through holes and the quantitative holes, and raw materials are punched out of the quantitative plate through the punching needle device. The invention further discloses a filling method based on the device, raw materials are supplemented while filling is achieved through the rotary disc structure, a plurality of firecracker cakes can be filled at the same time, the whole structure is simple and easy to maintain, and the device is simple in structure, safe, reliable, rapid, efficient and capable of reducing the cost.

Description

Technical Field

[0001] The present invention relates to the technical field of fireworks production equipment, and particularly relates to an automatic quantitative filling device and method for powder raw materials for filling the inner cylinder of fireworks. Background Art

[0002] In the field of fireworks production, the inner cylinder filling process is one of the core links, and its core task is to accurately fill powder raw materials such as oxidants and reducing agents into the inner cylinder of fireworks. For a long time, this process has mainly relied on manual operation. Workers need to directly contact flammable and explosive powder drugs, which not only results in low production efficiency and high labor intensity, but also poses extremely high safety risks. Manual operation is prone to uneven mixing of drugs and fluctuations in filling amounts, further exacerbating the explosion hazards. Although the industry has started to introduce automated equipment to replace manual operations in recent years, the existing technologies still have significant defects. For example, quantitative feeding devices using rotary disks or end face scraping methods often have drug residues that are difficult to clean thoroughly due to unreasonable structural designs, and the residual powder drugs are prone to causing safety accidents during equipment maintenance. The translation type quantitative device has serious drug leakage due to insufficient sealing, making it difficult to improve the single machine production capacity. In addition, existing equipment generally lacks modular design, and the operation is complex and poses safety hazards when replacing the quantitative unit, making it difficult to adapt to the production requirements of multiple specifications. The above problems seriously restrict the automation process of fireworks production, and there is an urgent need for a filling device that combines accurate quantification, high efficiency and safety, easy maintenance, and strong adaptability. Summary of the Invention

[0003] In order to solve the above problems in the prior art, the present invention provides an automatic quantitative filling device and method for powder raw materials for filling the inner cylinder of fireworks to solve the above technical problems.

[0004] To achieve the above object, according to the first aspect of the present invention, an automatic quantitative filling device for powder raw materials for filling the inner cylinder of fireworks is provided, which includes a frame, a turntable device, a material bin, a quantitative plate device, a punch needle device, and a turntable positioning device. The turntable device, the material bin, and the punch needle device are arranged on the frame. There are multiple installation stations for the quantitative plate device on the turntable device. The quantitative plate device includes a quantitative plate, a valve plate, a quantitative bottom plate, and a quantitative plate opening and closing device. Multiple quantitative holes are provided on the quantitative plate, and through holes are correspondingly provided on the valve plate. The quantitative plate opening and closing device controls the alignment or misalignment of the through holes and the quantitative holes, and the raw materials are punched out of the quantitative plate through the punch needle device. Through the coordinated work of the integrated turntable device, the quantitative plate opening and closing device, and the punch needle device, automatic quantitative filling of the powder raw materials is achieved, reducing manual intervention, improving the filling efficiency and safety. The modular quantitative plate design supports quick replacement and adapts to different production specifications.

[0005] In some specific embodiments, the silo includes two groups of independent bins, a material distribution mechanism, and a material level sensor. The material distribution mechanism and the material level sensor control the continuous feeding of single-component drugs. The dual-bin design, combined with the material distribution mechanism and the material level sensor, ensures the continuous feeding of single-component drugs, avoids the risk of storing mixed drugs, and improves the feeding stability and automation level.

[0006] In some specific embodiments, a sealing strip is provided at the bottom of the silo, and the sealing strip rotates and seals with the turntable device. The rotation sealing of the sealing strip and the turntable device effectively prevents the leakage of powder, enhances the sealing performance of the equipment, reduces the risk of dust explosion, and supports the water washing cleaning process.

[0007] In some specific embodiments, a detachable cleaning port is also provided on the turntable device. The setting of the detachable cleaning port simplifies the cleaning process of residual drugs, reduces the downtime, and reduces the safety hazards during maintenance.

[0008] In some specific embodiments, the punching needle device includes an adjustable cylinder and a positioning needle, and the positioning needle works in cooperation with the metering hole. The combination of the adjustable cylinder and the positioning needle realizes the flexible adjustment of the punching needle depth and the precise positioning, is compatible with different specifications of metering plates, and improves the versatility of the equipment.

[0009] In some specific embodiments, it further includes a turntable driving device, which is connected to the turntable device to drive the turntable device to rotate. A loading station and a replenishing station are provided on the turntable device, and the loading station and the replenishing station can be switched with each other when the turntable device rotates. The turntable driving device realizes the synchronous switching of the loading station and the replenishing station, and the replenishing and loading actions are alternated, significantly improving the production efficiency.

[0010] In some specific embodiments, it further includes a turntable positioning device for detecting whether the turntable device reaches a preset position, that is, the metering plate device and the punching needle device work in cooperation under the loading station, and the metering plate device and the silo work in cooperation under the replenishing station. The turntable positioning device ensures the precise alignment of the metering plate device with the punching needle device or the silo by detecting the turntable position, reduces the loading error, and improves the process stability.

[0011] In some specific embodiments, the metering plate opening and closing device is a linear driving mechanism, and the linear driving mechanism is connected to the valve plate. The linear driving mechanism pushes the valve plate to precisely control the alignment state of the metering hole and the through hole, reduces the powder leakage, and improves the metering accuracy.

[0012] According to the second aspect of the present invention, a loading method for an automatic quantitative loading device of powder raw materials for filling the inner cylinder of fireworks is provided, including:

[0013] S1: The turntable device rotates under the action of the turntable driving device, and moves the metering plate device to the replenishing station corresponding to the silo;

[0014] S2: Control the material distribution mechanism of the silo to alternately supply materials to two independent bins, and use a level sensor to monitor the amount of medicine in the bins in real time to trigger the replenishment operation;

[0015] S3: The quantitative plate opening and closing device pushes the valve plate to align the quantitative holes of the quantitative plate with the through holes of the valve plate to form a filling channel;

[0016] S4: The turntable device rotates to the filling station corresponding to the punching needle device. After determining the position of the quantitative hole through the positioning needle, the punching needle is driven by a stroke-adjustable cylinder to eject the raw material from the quantitative hole;

[0017] S5: After the filling is completed, the quantitative plate opening and closing device pushes the valve plate to reset, causing the quantitative hole and the through hole to be misaligned and closing the filling channel.

[0018] In some specific embodiments, after the filling is completed, the residual medicine on the turntable device is cleaned through a detachable cleaning port provided on the turntable device.

[0019] In summary, the beneficial effects of the present invention compared with the prior art include:

[0020] Improved safety: The design of independent storage and filling of single-component medicines avoids the risk of mixed medicines; the sealed structure and water washing function effectively inhibit the leakage and residue of medicine powder, reducing the explosion hazard.

[0021] Efficient production: The synchronous switching of the turntable stations enables replenishment and filling to be carried out in parallel, continuous feeding of two bins, and rapid replacement of modular quantitative plates, significantly improving the single-machine production capacity and production flexibility.

[0022] Precise control: Technologies such as closed-loop drive of the servo motor, double verification of the positioning pin and photoelectric sensor, and adjustable punching needle depth ensure that the filling amount is precisely controllable with a low error rate.

[0023] Convenient maintenance: Structures such as a quick-release cleaning port, modular quantitative plate design, and waterproof sealing strips simplify the equipment cleaning and maintenance process, reducing the downtime and maintenance cost.

[0024] Wide adaptability: By replacing quantitative plate devices of different specifications and adjusting the punching needle stroke, it can adapt to the filling requirements of various inner barrels of fireworks, enhancing the market application range of the equipment.

[0025] Through structural innovation and process optimization, the present invention comprehensively solves the problems of low efficiency and high danger of traditional manual filling, as well as serious leakage, difficult cleaning, and poor adaptability of existing automated equipment, providing a safe, efficient, and intelligent automated solution for the production of fireworks. Brief Description of the Drawings

[0026] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The drawings illustrate the embodiments and, together with the description, are used to explain the principles of the present invention. Other embodiments and many of the expected advantages of the embodiments will be readily apparent, as they become better understood by reference to the following detailed description. Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings:

[0027] Figure 1 is a schematic structural diagram of an automatic quantitative filling device for powder raw materials used in the filling of the inner cylinder of fireworks according to an embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of a silo according to a specific embodiment of the present invention;

[0029] Figure 3 is a schematic structural diagram of a quantitative plate device according to a specific embodiment of the present invention;

[0030] Figure 4 is a schematic structural diagram of a punch pin device according to a specific embodiment of the present invention;

[0031] Figure 5 is a schematic structural diagram of a turntable device according to a specific embodiment of the present invention;

[0032] Figure 6 is a flowchart of a filling method for an automatic quantitative filling device for powder raw materials used in the filling of the inner cylinder of fireworks according to an embodiment of the present invention.

[0033] Reference numerals: 1 - frame, 2 - silo, 21 - single - component medicine inlet, 22 - bin A, 23 - bin B, 24 - material distribution mechanism, 25 - sealing strip, 26 - bin A level sensor, 27 - bin B level sensor, 3 - turntable device, 31 - quick - release cleaning port, 4 - quantitative plate device, 41 - quantitative plate, 42 - valve plate, 43 - quantitative bottom plate, 5 - punch pin device, 51 - stroke - adjustable cylinder, 52 - punch pin, 53 - positioning pin, 6 - quantitative plate opening and closing device, 7 - quantitative plate positioning device, 8 - power unit. Detailed Description of the Embodiments

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0035] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "mounted", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The following further details the present application in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the relevant invention and not for limiting the invention. Additionally, it should be noted that for the convenience of description, only the parts related to the relevant invention are shown in the drawings.

[0037] Figure 1 The structural schematic diagram of an automatic quantitative filling device for the powder raw materials for filling the inner cylinder of fireworks is shown according to an embodiment of the present invention, as Figure 1As shown in the figure, the device includes a frame 1, a hopper 2, a turntable device 3, a metering plate device 4, a punch pin device 5, a metering plate opening and closing device 6, a metering plate positioning device 7, and a power unit 8. The frame 1 serves as the support foundation for the entire device and bears all other components. The hopper 2 is installed on the frame 1 and is used to store the powder raw materials required for fireworks production. The turntable device 3 is connected to the power unit 8, and the power unit 8 provides rotational power for the turntable device 3, enabling it to rotate on the frame 1. The metering plate device 4 is installed on the turntable device 3 and moves to different workstations under the drive of the turntable device 3. The punch pin device 5 is also installed on the frame 1 and is used to punch the raw materials out of the metering plate. The metering plate opening and closing device 6 and the metering plate positioning device 7 are also installed on the frame 1. The metering plate opening and closing device 6 is responsible for pushing the valve plate to control the opening and closing of the metering holes on the metering plate, and the metering plate positioning device 7 is used to accurately position the turntable device 3 at the filling workstation. Through the coordinated operation of these components, automatic quantitative filling of multi-firework cake powder raw materials is achieved, improving production efficiency and ensuring the safety of the filling process at the same time.

[0038] In a specific embodiment, the metering plate positioning device 7 can adopt servo motor closed-loop control, and the encoder can real-time feedback the rotation angle of the turntable; it can also adopt a mechanical locking mechanism of servo motor torque plus positioning block: the positioning block is arranged on the frame 1 and cooperates with the limiting parts circumferentially distributed on the turntable; it can also verify the positioning accuracy through a photoelectric sensor, and the photoelectric sensor is arranged at the filling workstation to detect whether the turntable reaches the preset position. Through the above methods or their combinations, such as the combination of encoder feedback and mechanical positioning block, the accurate positioning of the turntable during dynamic rotation and static filling can be ensured.

[0039] Figure 2 The structural schematic diagram of the hopper according to a specific embodiment of the present invention is shown, as Figure 2 As shown in the figure, the hopper 2 includes a single-component medicine inlet 21, a bin A 22, a bin B 23, a material distribution mechanism 24, a sealing strip 25, a bin A level sensor 26, and a bin B level sensor 27. The single-component medicine inlet 21 is used to transport the single-component medicine into the hopper 2. The interior of the hopper 2 is divided into a bin A 22 and a bin B 23, which can supply materials to two metering plate devices simultaneously. The material distribution mechanism 24 distributes the raw materials between the two bins and is controlled by two level sensors, namely the bin A level sensor 26 and the bin B level sensor 27. By real-time monitoring the amount of medicine in the bins, the feeding operation is triggered to ensure that there is sufficient raw material in the bins. The sealing strip 25 is in close contact with the turntable device 3 and is made of a waterproof material to seal the raw materials in the hopper 2. It not only prevents the leakage of raw materials but also enables the entire device to support water washing, facilitating the cleaning of residual medicine, and improving the safety and cleaning convenience of the equipment.

[0040] Figure 3The structural schematic diagram of a metering plate device according to a specific embodiment of the present invention is shown. As Figure 3 shown, the metering plate device 4 includes a metering plate 41, a valve plate 42, and a metering bottom plate 43. A plurality of metering holes are provided on the metering plate 41, which is a key component for realizing the quantitative filling of raw materials. A plurality of through holes corresponding to the metering holes are provided on the valve plate 42. The metering plate opening and closing device 6 pushes the valve plate 42 to stagger or align the metering holes on the metering plate 41 with the through holes on the valve plate 42 and the metering bottom plate 43. When the metering holes are aligned with the through holes, a filling channel is formed, facilitating the punching of raw materials by the punching needle; when the two are staggered, the filling channel is closed to prevent the leakage of raw materials. The metering plate device 4 adopts a modular design, and metering devices with different hole specifications can be designed according to product specifications, which is convenient for overall replacement, can quickly adapt to the production requirements of different products, and improves the versatility of the equipment.

[0041] Figure 4 The structural schematic diagram of a punching needle device according to a specific embodiment of the present invention is shown. As Figure 4 shown, the punching needle device 5 includes a stroke-adjustable cylinder 51, a punching needle 52, and a positioning needle 53. The stroke-adjustable cylinder 51 is used to set the insertion depth of the punching needle 52. By adjusting the stroke-adjustable cylinder 51, the insertion depth of the punching needle 52 into the metering plate device 4 can be conveniently adjusted, so as to be compatible with different metering plate devices 4 with the same aperture, improving the applicability of the punching needle device 5. The positioning needle 53 is inserted into the metering plate device 4 to determine the position of the metering holes, ensuring that the punching needle 52 can accurately punch the raw materials out of the metering holes and ensuring the accuracy of filling.

[0042] Figure 5 The structural schematic diagram of a turntable device according to a specific embodiment of the present invention is shown. As Figure 5 shown, a quick-release cleaning port 31 is provided on the turntable device 3, which is convenient for quickly cleaning the residual drugs, improving the cleaning efficiency of the equipment and reducing the safety hazards caused by drug residues. The turntable device 3 is provided with a plurality of installation positions for the metering plate device 4, and has the function that while one side of the metering plate device 4 is replenishing materials in the material bin 2, the other side of the metering plate device 4 is simultaneously punching and filling with the punching needle device 5, realizing the synchronous progress of filling and replenishing materials and further improving the production efficiency.

[0043] Continue to refer to Figure 6 , Figure 6 The flowchart of the filling method of the automatic quantitative filling device for powder raw materials used in the inner cylinder filling of fireworks according to an embodiment of the present invention is shown. As Figure 6 shown, the filling method specifically includes:

[0044] S1: The turntable device rotates under the action of the turntable driving device, and moves the metering plate device to the replenishing material station corresponding to the material bin;

[0045] S2: Control the material distribution mechanism of the silo to alternately feed materials to two independent material boxes, monitor the amount of medicine in the material box in real time through the material level sensor, and trigger the refilling operation;

[0046] S3: The quantitative plate opening and closing device pushes the valve plate so that the quantitative hole of the quantitative plate is aligned with the through hole of the valve plate to form a filling channel;

[0047] S4: The turntable device rotates to the loading station corresponding to the punching needle device. After the position of the quantitative hole is determined by the positioning needle, the stroke-adjustable cylinder drives the punching needle to punch the raw material out of the quantitative hole;

[0048] S5: After the filling is completed, the quantitative plate opening and closing device pushes the valve plate to reset, so that the quantitative hole and the through hole are misaligned, and the filling channel is closed.

[0049] In some specific embodiments, after filling is completed, the turntable device is cleaned of residual medicine through a detachable cleaning port provided on the turntable device.

[0050] This invention provides an automatic quantitative filling device and method for powdered raw materials in firecracker inner tubes. By utilizing a modular quantitative plate assembly, a dual-bin continuous feeding system, a servo-driven turntable with synchronized station switching, a stroke-adjustable punch for precise filling, and a quick-release purge port, this device enables safe filling of single-element materials, efficient production of multiple firecrackers, and convenient removal of residual materials. This solution completely eliminates the dangers of traditional manual operation and the leakage and cleanup challenges of existing equipment. It combines the advantages of high precision, high safety, and low maintenance costs, providing a standardized intelligent filling solution for the fireworks industry.

[0051] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0052] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0053] The specific embodiments of the present invention described above do not limit the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An automatic quantitative filling device for powder raw materials used in the inner cylinder filling of fireworks, characterized in that, It includes a frame, a turntable device, a hopper, a metering plate device, a punch needle device and a turntable positioning device. The turntable device, the hopper and the punch needle device are arranged on the frame. There are multiple installation stations for the metering plate device on the turntable device. The metering plate device includes a metering plate, a valve plate, a metering bottom plate and a metering plate opening and closing device. Multiple metering holes are arranged on the metering plate, and through holes are correspondingly arranged on the valve plate. The metering plate opening and closing device controls the alignment or misalignment of the through holes and the metering holes, and the raw materials are punched out of the metering plate by the punch needle device.

2. The automatic quantitative filling device for powder raw materials used in the inner cylinder filling of fireworks according to claim 1, characterized in that, The hopper includes two groups of independent bins, a material distribution mechanism and a material level sensor. The material distribution mechanism and the material level sensor control the continuous feeding of single-component drugs.

3. The automatic quantitative filling device for powder raw materials used in the inner cylinder filling of fireworks according to claim 2, characterized in that, A sealing strip is arranged at the bottom of the hopper, and the sealing strip is rotationally sealed with the turntable device.

4. The automatic quantitative filling device for powder raw materials used in the inner cylinder filling of fireworks according to claim 1, characterized in that, A detachable cleaning port is also arranged on the turntable device.

5. An automatic quantitative filling device for powder raw materials used in the filling of the inner cylinder of fireworks, characterized in that, The punch needle device includes an adjustable stroke cylinder and a positioning needle, and the positioning needle works in cooperation with the metering holes.

6. The automatic quantitative filling device for powder raw materials used in the inner cylinder filling of fireworks according to claim 1, wherein, It also includes a turntable driving device. The turntable driving device is connected to the turntable device to drive the turntable device to rotate. A loading station and a replenishing station are arranged on the turntable device, and the loading station and the replenishing station can be switched with each other when the turntable device rotates.

7. An automatic quantitative filling device for powder raw materials used in the inner cylinder filling of fireworks, characterized in that, It also includes a turntable positioning device for detecting whether the turntable device reaches a preset position, that is, the metering plate device and the punch needle device work in cooperation under the loading station, and the metering plate device and the hopper work in cooperation under the replenishing station.

8. The automatic quantitative filling device for powder raw materials used in the inner cylinder filling of fireworks according to claim 1, characterized in that, The metering plate opening and closing device is a linear driving mechanism, and the linear driving mechanism is connected to the valve plate.

9. A filling method for an automatic quantitative filling device of powder raw materials for filling the inner cylinder of fireworks, as described in any one of claims 1-8, characterized in that, It includes: S1: The turntable device rotates under the action of the turntable driving device, and moves the metering plate device to the replenishing station corresponding to the hopper. S2: Control the material distribution mechanism of the hopper to alternately feed the two independent bins, and real-time monitor the drug quantity in the bins through the material level sensor to trigger the replenishing operation. S3: The metering plate opening and closing device pushes the valve plate to align the metering holes of the metering plate with the through holes of the valve plate to form a loading channel. S4: The turntable device rotates to the loading station corresponding to the punch needle device. After determining the positions of the metering holes through the positioning needles, drive the punch needles to punch out the raw materials from the metering holes through the adjustable stroke cylinder. S5: After the loading is completed, the metering plate opening and closing device pushes the valve plate to reset, so that the metering holes and the through holes are misaligned to close the loading channel.

10. The loading method according to claim 9, characterized in that, After the loading is completed, clean the residual drugs on the turntable device through the detachable cleaning port arranged on the turntable device.

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