Hopper assembly for firework inner cylinder and firework inner cylinder filling equipment
By designing the hopper and material stop mechanism in the firework inner cylinder loading equipment, the problem of rolling and reversing of the inner cylinder is solved, the orderly stacking of the inner cylinder is realized, and the reliability and safety of the equipment are improved.
Patent Information
- Application Number
- CN202521501116.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-17
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2035-07-17
AI Technical Summary
In the existing firework inner cylinder loading equipment, the inner cylinder is easily rolled and reversed during the blanking process, which affects the filling steps and safety.
A hopper assembly for firework inner cylinder is designed, including a hopper and a material barrier mechanism. The material barrier structure is located above the material trough. The action of the material barrier structure is controlled through the driving device to prevent the inner cylinder from rolling and ensure orderly stacking.
It improves the reliability and safety of equipment operation, ensures orderly stacking of inner cylinders, reduces rolling and reversing, and improves the stability of the loading process.
Smart Images
Figure CN223258741U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of fireworks production equipment, and in particular to a hopper assembly for fireworks inner tubes and a fireworks inner tube filling device. Background Art
[0002] The inner tube is the core component of a firework, responsible for holding the pyrotechnic composition and achieving lift, explosion, and display effects during the fireworks display. During fireworks production, the inner tube loading equipment is used to load the outer tube into the fireworks. The inner tube loading equipment is equipped with a hopper for storing the inner tubes.
[0003] For ordinary hoppers, when the feeding device loads the inner tube into the hopper, the inner tube is prone to roll over and turn over during the blanking process, affecting subsequent filling steps and safety. Utility Model Content
[0004] The technical problem to be solved by the present application is to propose a hopper assembly for a firework inner tube and a firework inner tube filling device in response to the above-mentioned deficiencies in the prior art.
[0005] A hopper assembly for a fireworks inner tube, comprising:
[0006] The hopper is provided with a trough for accommodating the inner cylinder and a feeding port at the bottom;
[0007] The material blocking mechanism includes a material blocking structure and a driving device; the material blocking structure is arranged in the material trough and is located above the material dropout port; the driving device can drive the material blocking structure to move; when the material blocking structure moves to a first position, the material blocking structure can block the inner cylinder falling into the material trough from above; as the material blocking structure moves from the first position to the second position, the inner cylinder above the material blocking structure can fall to the bottom of the material trough.
[0008] Optionally, the material blocking mechanism includes two material blocking structures, which are a first material blocking structure and a second material blocking structure; the first material blocking structure is close to a first side of the material trough, and the second material blocking structure is close to a second side of the material trough;
[0009] When the first material blocking structure and the second material blocking structure move to the first position, the first material blocking structure and the second material blocking structure can block the inner cylinder falling into the trough from above;
[0010] As the first and second stopping structures move from the first position to the second position, the first and second stopping structures open downward so that the inner cylinder above the first and second stopping structures can fall from between the first and second stopping structures to the bottom of the trough.
[0011] Optionally, the first material blocking structure includes a first material blocking plate and a second material blocking plate, one end of the first material blocking plate and one end of the second material blocking plate are hinged together, and a first elastic element is installed at the hinge position; the first elastic element is used to elastically maintain a relative angular relationship between the first material blocking plate and the second material blocking plate;
[0012] The second material blocking structure includes a third material blocking plate and a fourth material blocking plate, one end of the third material blocking plate and one end of the fourth material blocking plate are hinged together, and a second elastic element is installed at the hinge position; the second elastic element is used to elastically maintain the relative angle relationship between the third material blocking plate and the fourth material blocking plate;
[0013] When the first material stop structure and the second material stop structure move to the first position, the first material stop plate and the third material stop plate are located between the second material stop plate and the fourth material stop plate; the first material stop plate and the third material stop plate form a V-shaped structure, the second material stop plate is located above the rear side of the first material stop plate, and the fourth material stop plate is located above the rear side of the third material stop plate;
[0014] As the first material stopping structure and the second material stopping structure move from the first position to the second position, the first material stopping plate and the third material stopping plate rotate downward and open.
[0015] Optionally, the connection structure between the first material baffle plate and the second material baffle plate includes a first limiting structure and a second limiting structure;
[0016] The first limiting structure is connected to one end of the first material blocking plate;
[0017] The second limiting structure is connected to one end of the second material blocking plate;
[0018] The first limiting structure and the second limiting structure are rotatably combined together, and the relative rotation between the two is limited to a fixed angle range;
[0019] The connection structure between the third material baffle plate and the fourth material baffle plate includes a third limiting structure and a fourth limiting structure;
[0020] The third limiting structure is connected to one end of the third baffle plate;
[0021] The fourth limiting structure is connected to one end of the fourth material blocking plate;
[0022] The third limiting structure and the fourth limiting structure are rotatably combined together, and the relative rotation between the two is limited to a fixed angle range.
[0023] Optionally, a first arcuate groove is arranged on the first limiting structure around the rotation center; a first sliding pin is provided on the second limiting structure; the first sliding pin is installed in the first arcuate groove and is restricted to move within the length range of the first arcuate groove, thereby limiting the relative rotation between the first limiting structure and the second limiting structure to a fixed angular range;
[0024] A second arc-shaped groove is arranged on the third limiting structure around the rotation center; a second sliding pin is provided on the fourth limiting structure; the second sliding pin is inserted into the second arc-shaped groove and is restricted to move within the length range of the second arc-shaped groove, thereby limiting the relative rotation between the third limiting structure and the fourth limiting structure to a fixed angle range.
[0025] Optionally, the driving device includes: a first driving element and a second driving element; the first driving element is used to drive the first material blocking structure and the second material blocking structure to rise and fall; the second driving element is used to drive the first material blocking structure and the second material blocking structure to flip.
[0026] Optionally, the first drive element and the second drive element are both arranged on the back side of the hopper.
[0027] Optionally, a first connecting post is provided on the first material blocking plate of the first material blocking structure, and the first connecting post passes through the opening on the hopper and is connected to the first driving element and the second driving element;
[0028] A second connecting column is provided on the third material blocking plate of the second material blocking structure, and the second connecting column passes through the opening on the hopper and is connected to the first driving element and the second driving element.
[0029] Optionally, a dividing block is installed at the bottom of the trough to divide the material outlet into multiple sections.
[0030] The present application also provides a firework inner tube filling device, which has the above-mentioned firework inner tube hopper assembly.
[0031] In this application, when the hopper is loaded with an inner cylinder, the retaining structure moves to a first position, allowing it to block the inner cylinder falling into the trough from above. As the retaining structure moves from the first position to the second position, the inner cylinder above the retaining structure can fall to the bottom of the trough. Therefore, the technical solution of this application provides a retaining mechanism above the drop-out port, which can provide an intermediate platform for the inner cylinder falling into the trough, thereby reducing the rolling and inversion of the inner cylinder, allowing the inner cylinder to be stacked in the hopper in an orderly manner, improving the reliability and safety of the equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1This is one of the structural diagrams of the hopper assembly for the fireworks inner tube in the embodiment of the present application.
[0033] Figure 2 This is the second structural diagram of the hopper assembly for the fireworks inner tube in the embodiment of the present application.
[0034] Figure 3 This is the third structural diagram of the hopper assembly for the fireworks inner tube in the embodiment of the present application.
[0035] Figure 4 This is the fourth structural diagram of the hopper assembly for the fireworks inner tube in the embodiment of the present application.
[0036] Figure 5 It is a structural diagram of the material blocking mechanism in an embodiment of the present application.
[0037] Figure 6 It is a structural schematic diagram of the first material blocking structure in an embodiment of the present application.
[0038] Figure 7 It is a structural schematic diagram of the second material blocking structure in an embodiment of the present application.
[0039] Figure markings: hopper 10, material trough 11, material outlet 12, dividing block 13, material blocking mechanism 20, first material blocking structure 21, first material blocking plate 211, first connecting column 2111, second material blocking plate 212, first limiting structure 214, first arc-shaped groove 2141, second limiting structure 215, first sliding pin 2151, second material blocking structure 22, third material blocking plate 221, second connecting column 2211, fourth material blocking plate 222, third limiting structure 224, second arc-shaped groove 2241, fourth limiting structure 225, second sliding pin 2251, driving device 23, first driving element 231, second driving element 232. DETAILED DESCRIPTION
[0040] The following are specific embodiments of the present application and, in conjunction with the accompanying drawings, further description of the technical solutions of the present application is provided, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided solely to assist in a comprehensive understanding of the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope of protection of the present application. In addition, for clarity and brevity, descriptions of known functions and configurations have been omitted.
[0041] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.
[0042] During the production of fireworks, a firework inner tube loading device is used to load the inner tubes into the outer tubes. This device is equipped with a hopper for storing the inner tubes. With conventional hoppers, when a loading device loads the inner tubes into the hopper, the inner tubes are prone to tumbling and turning over during the emptying process, compromising subsequent loading steps and safety. To address this issue, the present application provides a hopper assembly for firework inner tubes.
[0043] In an embodiment of the present application, a hopper assembly for firework inner tubes includes a hopper and a retaining mechanism. The hopper includes a trough for accommodating the inner tube, with a dropout opening at its bottom. The retaining mechanism includes a retaining structure and a drive device. The retaining structure is disposed within the trough and above the dropout opening. The drive device is capable of actuating the retaining structure. When the retaining structure is actuated to a first position, it can retain an inner tube falling into the trough from above. As the retaining structure actuates from the first position to a second position, the inner tube above the retaining structure can drop to the bottom of the trough.
[0044] In some technical solutions, the inner cylinder filling equipment uses a loading device to automatically load the hopper. When the hopper is loaded with the inner cylinder, the retaining structure moves to the first position so that the retaining structure can block the inner cylinder falling into the trough from above; therefore, the inner cylinder first falls onto the retaining structure. Subsequently, the retaining structure moves from the first position to the second position, and the inner cylinder above the retaining structure can further fall to the bottom of the trough. Therefore, a retaining mechanism is provided above the drop port to provide an intermediate platform for the inner cylinder falling into the trough, which can reduce the rolling and inversion of the inner cylinder when it is dropped, so that the inner cylinder can be stacked in the hopper in an orderly manner, thereby improving the reliability and safety of the equipment operation.
[0045] refer to Figure 1-Figure 4 The hopper assembly for firework inner tubes includes a hopper 10 and a material retaining mechanism 20. The hopper 10 has a trough 11 for accommodating the inner tubes, with a discharge opening 12 at its bottom. The material retaining mechanism 20 includes a retaining structure and a driving device 23. The retaining structure is disposed within the trough 11 and above the discharge opening 12. The driving device 23 is capable of driving the retaining structure. When the retaining structure is in a first position, it can retain the inner tubes falling into the trough 11 from above. As the retaining structure moves from the first position to the second position, the inner tubes above the retaining structure can fall to the bottom of the trough 11.
[0046] The material retaining mechanism 20 includes two retaining structures: a first retaining structure 21 and a second retaining structure 22. The first retaining structure 21 is located near a first side of the trough 11, while the second retaining structure 22 is located near a second side of the trough 11. When the first and second retaining structures 21 and 22 are in a first position, they can block an inner cylinder falling from above into the trough 11. As the first and second retaining structures 21 and 22 move from the first position to the second position, they open downward, allowing the inner cylinder above the first and second retaining structures 21 and 22 to fall between the first and second retaining structures 21 and 22 to the bottom of the trough 11.
[0047] The first material blocking structure 21 and the second material blocking structure 22 are symmetrically designed and are respectively located on the left and right sides of the trough 11. The first material blocking structure 21 is close to the left side of the trough 11, and the second material blocking structure 22 is close to the right side of the trough 11. Figure 3 The diagram shows the first and second blocking structures 21 and 22 moving to the first position. The first and second blocking structures 21 and 22 are closed together, thereby blocking the inner cylinder falling into the trough 11 from above. Figure 4 The schematic diagram shows the first and second stop structures 21, 22 moving to the second position. The first and second stop structures 21, 22 are opened downward, and a material drop gap is formed between the first and second stop structures 21, 22. Therefore, the inner cylinder above the first and second stop structures 21, 22 can drop from between the first and second stop structures 21, 22 to the bottom of the trough 11. It should be understood that during the process of the first and second stop structures 21, 22 moving from the first position to the second position, the first and second stop structures 21, 22 gradually open, and the inner cylinder above the first and second stop structures 21, 22 gradually drops to the bottom of the trough 11.
[0048] In one embodiment of the present application, the first material stop structure 21 includes a first material stop plate 211 and a second material stop plate 212. One end of the first material stop plate 211 and one end of the second material stop plate 212 are hinged together, and a first elastic element is installed at the hinge position; the first elastic element is used to elastically maintain the relative angular relationship between the first material stop plate 211 and the second material stop plate 212. The second material stop structure 22 includes a third material stop plate 221 and a fourth material stop plate 222. One end of the third material stop plate 221 and one end of the fourth material stop plate 222 are hinged together, and a second elastic element is installed at the hinge position; the second elastic element is used to elastically maintain the relative angular relationship between the third material stop plate 221 and the fourth material stop plate 222.
[0049] refer to Figure 3When the first stopper structure 21 and the second stopper structure 22 move to the first position, the first stopper plate 211 and the third stopper plate 221 are located between the second stopper plate 212 and the fourth stopper plate 222; the first stopper plate 211 and the third stopper plate 221 form a V-shaped structure, the second stopper plate 212 is located above the rear side of the first stopper plate 211, and the fourth stopper plate 222 is located above the rear side of the third stopper plate 221. As the first stopper structure 21 and the second stopper structure 22 move from the first position to the second position, the first stopper plate 211 and the third stopper plate 221 rotate downward and open, and the open state is as shown in FIG. Figure 4 shown.
[0050] The first material retaining structure 21 has a hinged connection between the first and second material retaining plates 211, 212. A first elastic element is installed at the hinged connection. The first elastic element provides a spring force, maintaining a predetermined angle between the first and second material retaining plates 211, 212 in their natural state. It should be understood that the first elastic element can be designed as a variety of elastic components, such as a torsion spring or elastic limiter.
[0051] The second material stop structure 22 is hingedly connected to the third and fourth material stop plates 221 and 222, and a second elastic element is installed at the hinged position. The second elastic element is used to provide a spring force, maintaining a predetermined angle between the third and fourth material stop plates 221 and 222 in their natural state. It should be understood that the second elastic element can be designed as a variety of elastic components, such as a torsion spring or elastic limiter.
[0052] In one embodiment of the present application, reference Figure 5 and Figure 6 The connection structure between the first baffle plate 211 and the second baffle plate 212 includes a first limiting structure 214 and a second limiting structure 215; the first limiting structure 214 is connected to one end of the first baffle plate 211; the second limiting structure 215 is connected to one end of the second baffle plate 212; the first limiting structure 214 and the second limiting structure 215 are rotatably combined together, and the relative rotation between the two is limited to a fixed angle range. Furthermore, a first arc-shaped groove 2141 is arranged around the rotation center on the first limiting structure 214; a first sliding pin 2151 is provided on the second limiting structure 215; the first sliding pin 2151 is installed in the first arc-shaped groove 2141 and is limited to moving within the length range of the first arc-shaped groove 2141, thereby limiting the relative rotation between the first limiting structure 214 and the second limiting structure 215 to a fixed angle range.
[0053] In one embodiment of the present application, reference Figure 5 and Figure 7The connection structure between the third baffle plate 221 and the fourth baffle plate 222 includes a third limiting structure 224 and a fourth limiting structure 225; the third limiting structure 224 is connected to one end of the third baffle plate 221; the fourth limiting structure 225 is connected to one end of the fourth baffle plate 222; the third limiting structure 224 and the fourth limiting structure 225 are rotatably coupled together, and the relative rotation between the two is limited to a fixed angular range. Furthermore, a second arcuate groove 2241 is arranged around the rotation center on the third limiting structure 224; a second sliding pin 2251 is provided on the fourth limiting structure 225; the second sliding pin 2251 is installed in the second arcuate groove 2241 and is limited to move within the length of the second arcuate groove 2241, thereby limiting the relative rotation between the third limiting structure 224 and the fourth limiting structure 225 to a fixed angular range.
[0054] For the first retaining structure 21, the first limiting structure 214 and the second limiting structure 215 can rotate relative to each other, and the relative rotation between the first limiting structure 214 and the second limiting structure 215 is limited to a fixed angle range. When the driving device 23 drives the first retaining plate 211, the second retaining plate 212 can elastically follow the rotation, and allow the first retaining plate 211 and the second retaining plate 212 to rotate relative to each other at a certain angle. The second retaining structure 22 is similar and will not be described here. When the feeding device enters between the first retaining structure 21 and the second retaining structure 22, the feeding device can force the second retaining plate 212 and the fourth retaining plate 222 to retreat to a certain angle to both sides; at this time, the second retaining plate 212 and the fourth retaining plate 222 abut against the feeding device from both sides, forming a wrap around the feeding device, which can prevent the inner barrel from overflowing when the material is dropped.
[0055] In one embodiment of the present application, the driving device 23 includes a first driving element 231 and a second driving element 232; the first driving element 231 is used to drive the first and second material blocking structures 21 and 22 to rise and fall; the second driving element 232 is used to drive the first and second material blocking structures 21 and 22 to flip. The first driving element 231 and the second driving element 232 are both arranged on the back of the hopper. Furthermore, a first connecting column 2111 is provided on the first material blocking plate 211 of the first material blocking structure 21, and the first connecting column 2111 passes through the opening on the hopper and is connected to the first and second driving elements 231 and 232. A second connecting column 2211 is provided on the third material blocking plate 221 of the second material blocking structure 22, and the second connecting column 2211 passes through the opening on the hopper and is connected to the first and second driving elements 231 and 232.
[0056] Figure 3A schematic diagram is shown in which the first material blocking structure 21 and the second material blocking structure 22 move to the first position state, and the first material blocking structure 21 and the second material blocking structure 22 are closed together. Figure 4 The diagram shows the first and second stopper structures 21, 22 moving to their second positions, with the first and second stopper structures 21, 22 opening downward. As the first and second stopper structures 21, 22 move from their first to their second positions, the first drive element 231 drives the first and second stopper structures 21, 22 downward, while the second drive element 232 drives the first and second stopper structures 21, 22 to flip and open.
[0057] In one embodiment of the present application, a partition 13 is installed at the bottom of the trough 11 to divide the discharge opening 12 into multiple sections. The partition 13 can separate the discharge opening below the trough 11 into multiple sub-discharge openings. In some technical solutions, when a movable chute is used below the hopper to receive the material, the trough 11 can discharge the material through multiple sub-discharge openings.
[0058] The embodiment of the present application also provides a device for filling fireworks inner tubes, which has the above-mentioned hopper assembly for fireworks inner tubes. The hopper assembly for fireworks inner tubes includes a hopper and a material blocking mechanism; the hopper is provided with a material trough for accommodating the inner tube, and a material dropout opening is provided at the bottom thereof. The material blocking mechanism includes a material blocking structure and a driving device; the material blocking structure is arranged in the material trough and is located above the material dropout opening; the driving device can drive the material blocking structure to move; when the material blocking structure moves to a first position, the material blocking structure can block the inner tube falling into the material trough from above; as the material blocking structure moves from the first position to the second position, the inner tube above the material blocking structure can fall to the bottom of the material trough. For a more specific description, please refer to the description of the hopper assembly for fireworks inner tubes in the previous section, which will not be repeated here.
[0059] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.
[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "multiple" means at least two, such as two, three, etc., unless otherwise clearly defined. It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprises" and / or "includes" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.
[0061] The specific embodiments described herein are merely examples of the technical solutions of this application. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them with similar methods without departing from the scope defined by the claims of this application.
Claims
1. A hopper assembly for a fireworks inner tube, characterized in that: The hopper assembly for the fireworks inner tube includes: The hopper is provided with a trough for accommodating the inner cylinder and a feeding port at the bottom; The material blocking mechanism includes a material blocking structure and a driving device; the material blocking structure is arranged in the material trough and is located above the material dropout port; the driving device can drive the material blocking structure to move; when the material blocking structure moves to a first position, the material blocking structure can block the inner cylinder falling into the material trough from above; as the material blocking structure moves from the first position to the second position, the inner cylinder above the material blocking structure can fall to the bottom of the material trough.
2. The hopper assembly for a fireworks inner tube according to claim 1, characterized in that: The material blocking mechanism includes two material blocking structures, which are a first material blocking structure and a second material blocking structure; the first material blocking structure is close to the first side of the material trough, and the second material blocking structure is close to the second side of the material trough; When the first material blocking structure and the second material blocking structure move to the first position, the first material blocking structure and the second material blocking structure can block the inner cylinder falling into the material trough from above; As the first and second stopping structures move from the first position to the second position, the first and second stopping structures open downward so that the inner cylinder above the first and second stopping structures can fall from between the first and second stopping structures to the bottom of the trough.
3. The hopper assembly for a fireworks inner tube according to claim 2, characterized in that: The first material blocking structure includes a first material blocking plate and a second material blocking plate, one end of the first material blocking plate and one end of the second material blocking plate are hinged together, and a first elastic element is installed at the hinge position; the first elastic element is used to elastically maintain the relative angle relationship between the first material blocking plate and the second material blocking plate; The second material blocking structure includes a third material blocking plate and a fourth material blocking plate, one end of the third material blocking plate and one end of the fourth material blocking plate are hinged together, and a second elastic element is installed at the hinge position; the second elastic element is used to elastically maintain the relative angle relationship between the third material blocking plate and the fourth material blocking plate; When the first material stop structure and the second material stop structure move to the first position, the first material stop plate and the third material stop plate are located between the second material stop plate and the fourth material stop plate; the first material stop plate and the third material stop plate form a V-shaped structure, the second material stop plate is located above the rear side of the first material stop plate, and the fourth material stop plate is located above the rear side of the third material stop plate; As the first material stopping structure and the second material stopping structure move from the first position to the second position, the first material stopping plate and the third material stopping plate rotate downward and open.
4. The hopper assembly for a fireworks inner tube according to claim 3, characterized in that: The connection structure between the first material blocking plate and the second material blocking plate includes a first limiting structure and a second limiting structure; The first limiting structure is connected to one end of the first material blocking plate; The second limiting structure is connected to one end of the second material blocking plate; The first limiting structure and the second limiting structure are rotatably combined together, and the relative rotation between the two is limited to a fixed angle range; The connection structure between the third material baffle plate and the fourth material baffle plate includes a third limiting structure and a fourth limiting structure; The third limiting structure is connected to one end of the third baffle plate; The fourth limiting structure is connected to one end of the fourth blocking plate; The third limiting structure and the fourth limiting structure are rotatably combined together, and the relative rotation between the two is limited to a fixed angle range.
5. The hopper assembly for a fireworks inner tube according to claim 4, characterized in that: The first limiting structure is provided with a first arcuate groove around the rotation center; the second limiting structure is provided with a first sliding pin; the first sliding pin is installed in the first arcuate groove and is restricted in movement within the length range of the first arcuate groove, thereby limiting the relative rotation between the first limiting structure and the second limiting structure to a fixed angular range; A second arc-shaped groove is arranged on the third limiting structure around the rotation center; a second sliding pin is provided on the fourth limiting structure; the second sliding pin is inserted into the second arc-shaped groove and is restricted to move within the length range of the second arc-shaped groove, thereby limiting the relative rotation between the third limiting structure and the fourth limiting structure to a fixed angle range.
6. The hopper assembly for a fireworks inner tube according to claim 3, characterized in that: The driving device includes: a first driving element and a second driving element; the first driving element is used to drive the first and second material blocking structures to rise and fall; the second driving element is used to drive the first and second material blocking structures to flip.
7. The hopper assembly for a fireworks inner tube according to claim 6, characterized in that: The first drive element and the second drive element are both arranged on the back side of the hopper.
8. The hopper assembly for a fireworks inner tube according to claim 7, characterized in that: A first connecting post is provided on the first material blocking plate of the first material blocking structure, and the first connecting post passes through the opening on the hopper and is connected to the first driving element and the second driving element; A second connecting column is provided on the third material blocking plate of the second material blocking structure, and the second connecting column passes through the opening on the hopper and is connected to the first driving element and the second driving element.
9. The hopper assembly for a fireworks inner tube according to claim 1, characterized in that: The bottom of the trough is provided with a dividing block to divide the material outlet into multiple sections.
10. A firework inner tube filling device, characterized in that: The fireworks inner tube filling device comprises a fireworks inner tube hopper assembly as described in any one of claims 1-9.