Hopper assembly of inner tube of firework, inner tube filling equipment of combined firework and production line
By designing a deformable material frame assembly and drive unit that adapts to the shape of the inner cylinder cake, the problem of inner cylinder tumbling and inverting in the fireworks inner cylinder hopper was solved, achieving stable stacking of the inner cylinder and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGSHA FANKE INTELLIGENT TECH CO LTD
- Filing Date
- 2026-03-05
- Publication Date
- 2026-05-15
AI Technical Summary
The existing fireworks inner tube hopper is prone to rolling and tipping over during the filling process, which affects the filling procedure and safety.
A fireworks inner cylinder hopper assembly was designed, which includes a hopper structure, a receiving mechanism, and a variable material frame assembly. The deformable material frame adapts to the inner cylinder cake, and the elastic sidewalls and drive unit are used to achieve stable stacking of the inner cylinder, avoiding rolling and overturning.
It enables automated and stable stacking of inner cylinders, improving safety and equipment reliability, and reducing downtime.
Smart Images
Figure CN121782941B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fireworks production equipment technology, and in particular to a hopper assembly for fireworks inner tubes, an inner tube filling device for combination fireworks, and a production line. Background Technology
[0002] The inner tube of a firework is the core effect component of a combination firework, largely determining its shape, color, and effect when it bursts into the air. During the production of combination fireworks, the production equipment needs to fill the inner tube into the firework launch tube. Therefore, the production equipment for combination fireworks is usually equipped with a hopper for storing the inner tubes. The inner tubes in the hopper fall downwards to be transferred and filled into the firework launch tube.
[0003] The inner tube cake is the basic unit in fireworks production. It is formed by assembling multiple inner tubes together with tie straps, resulting in a hexagonal shape. Before filling, the inner tube cake needs to be untied (the tie straps removed). During feeding, the feeding mechanism loads the inner tubes of the inner tube cake into the hopper. However, in ordinary hoppers, the inner tubes released after the tie straps are removed are prone to tumbling and tipping over as they are stacked to the bottom of the hopper, affecting subsequent filling steps and safety. Summary of the Invention
[0004] The technical problem to be solved by this application is to provide a hopper assembly for the inner tube of fireworks, an inner tube filling device for combined fireworks, and a production line, in response to the above-mentioned deficiencies of the prior art.
[0005] A hopper assembly for a fireworks inner tube includes:
[0006] The hopper structure is equipped with a trough, and a material discharge opening is provided at the bottom of the trough;
[0007] The receiving mechanism includes a receiving platform and a second set of drive units; the receiving platform is located above the material discharge opening; the second set of drive units is used to drive the receiving platform to move.
[0008] The variable material frame assembly includes an upper stop, a first side stop, a second side stop, and a first set of drive units; the upper stop is located above the receiving platform; the first side stop and the second side stop are located on both sides below the upper stop, and both are elastic elements; the first set of drive units is used to drive the upper stop, the first side stop, and the second side stop to move.
[0009] The upper baffle, the first side baffle, the second side baffle, and the receiving platform together form a temporary material frame of a first shape in the first state; the temporary material frame is adapted to the shape of the inner cylinder cake in the first shape, and can be just right to fit into the inner cylinder of an inner cylinder cake, and the first side baffle and the second side baffle are in a stretched and taut state.
[0010] The temporary material frame formed by the upper guard edge, the first side guard edge, the second side guard edge, and the receiving platform transforms into a second shape in the second state;
[0011] During the process of the temporary material frame changing from the first shape to the second shape, the first side guard and the second side guard elastically deform to keep the size of the temporary material frame matching the inner cylinder loaded inside it;
[0012] The second set of drive units can drive the receiving platform to stack the inner cylinder of the temporary material frame downwards onto the bottom of the material trough after the temporary material frame is transformed into the second shape.
[0013] Optionally, in the first state, the temporary material frame is hexagonal, which is adapted to the shape of the inner cylinder cake of the hexagon; wherein, the upper stop edge forms the upper side of the hexagon, the receiving platform forms the lower side of the hexagon, the first side stop edge forms the two sides on the left side of the hexagon, and the second side stop edge forms the two sides on the right side of the hexagon.
[0014] In the second state, the temporary material frame is transformed into a quadrilateral structure, wherein the upper stop constitutes the upper side of the quadrilateral structure, the receiving platform constitutes the lower side of the quadrilateral structure, the first side stop constitutes the left side of the quadrilateral structure, and the second side stop constitutes the right side of the quadrilateral structure.
[0015] Optionally, the variable frame assembly includes an elastic band and multiple shape control elements;
[0016] The multiple shape control components are distributed at different positions to work together to tension the elastic band so that the elastic band maintains a predetermined shape;
[0017] The upper stop, the first side stop, and the second side stop are configured as different parts of the elastic band;
[0018] Driven by the first set of driving units, the plurality of shape control components can change their position distribution to transform the temporary material frame into a hexagonal or quadrilateral structure.
[0019] Optionally, the shape control element includes a first shape control element, a second shape control element, a third shape control element, a fourth shape control element, a fifth shape control element, and a sixth shape control element;
[0020] The first shape control component and the second shape control component are arranged on both sides of the bottom of the temporary material frame; wherein, the first shape control component is located on the left side and the second shape control component is located on the right side;
[0021] The third shape control component and the fourth shape control component are arranged on the top two sides of the temporary material frame; wherein, the third shape control component is located on the left side and the fourth shape control component is located on the right side;
[0022] The fifth shape control component and the sixth shape control component are arranged on both sides of the middle part of the temporary material frame; wherein, the fifth shape control component is located on the left side and the sixth shape control component is located on the right side;
[0023] The A portion of the elastic band is fixedly connected to the first shape control member, and the B portion of the elastic band is fixedly connected to the second shape control member; the portion of the elastic band between the A portion and the B portion bypasses the third shape control member, the fourth shape control member, the fifth shape control member, and the sixth shape control member, and can be stretched outward by the third shape control member, the fourth shape control member, the fifth shape control member, and the sixth shape control member;
[0024] In the first state, the portion of the elastic band between the third shape control member and the fifth shape control member, and the portion of the elastic band between the first shape control member and the fifth shape control member, respectively form the two left sides of the hexagon; the portion of the elastic band between the fourth shape control member and the sixth shape control member, and the portion of the elastic band between the second shape control member and the sixth shape control member, respectively form the two right sides of the hexagon; the portion of the elastic band between the third shape control member and the fourth shape control member forms the top side of the hexagon.
[0025] In the second state, the portion of the elastic band between the first shape control member and the third shape control member forms the left side of the quadrilateral structure; the portion of the elastic band between the second shape control member and the fourth shape control member forms the right side of the quadrilateral structure; and the portion of the elastic band between the third shape control member and the fourth shape control member forms the top side of the quadrilateral structure.
[0026] Optionally, during the process of the temporary material frame changing from the first shape to the second shape, the first shape control component moves to the left, the second shape control component moves to the right; the third shape control component moves to the left and downward; the fourth shape control component moves to the right and downward; and the fifth and sixth shape control components remain fixed.
[0027] Optionally, the first group of drive units includes:
[0028] The first driving unit is used to drive the first shape control member to move laterally.
[0029] The second driving unit is used to drive the second shape control member to move laterally.
[0030] The third driving unit is used to drive the third shape control component to move laterally.
[0031] The fourth drive unit is used to drive the fourth shape control member to move laterally;
[0032] The fifth driving unit is used to drive the third shape control member and the fourth shape control member to move vertically.
[0033] Optionally, the receiving mechanism further includes a lifting bracket; the second set of drive units includes a sixth drive unit and a seventh drive unit;
[0034] The sixth drive unit is assembled between the hopper structure and the lifting bracket, and is used to drive the lifting bracket to move up and down relative to the hopper structure;
[0035] The seventh drive unit is assembled between the lifting bracket and the receiving platform, and is used to drive the receiving platform to move horizontally relative to the lifting bracket.
[0036] When the inner cylinder is stacked downwards, the sixth drive unit drives the lifting bracket to move down to the stacking height of the lower inner cylinder. At this height, as the seventh drive unit drives the receiving platform to exit the material trough, the lifting bracket blocks the inner cylinder on the receiving platform, causing the inner cylinder on the receiving platform to separate from the receiving platform and fall onto the stacked inner cylinder below.
[0037] Optionally, the hopper structure includes a back plate, and the back plate is fixed with two opposing vertical baffles, forming a trough between the two vertical baffles;
[0038] When the temporary material frame is transformed into a four-sided structure, the left and right sides of the temporary material frame are aligned with the two vertical guard edges, respectively.
[0039] When the receiving platform is stacking the inner cylinder downwards, the receiving platform supports the inner cylinder falling out of the temporary material frame and moves down along the vertical side of the material trough to the stacking height of the inner cylinder below. At this height, it exits the material trough so that the inner cylinder on it falls onto the stacked inner cylinder below.
[0040] On the other hand, this application also provides an inner tube filling device for combined fireworks, including the aforementioned hopper assembly.
[0041] On the other hand, this application also provides a production line for combined fireworks, including the aforementioned inner cylinder filling equipment.
[0042] In this application, a variable material frame assembly and a receiving mechanism are used to receive inner cylinders and stack them sequentially on the bottom of the trough. During operation, the upper baffle, first side baffle, second side baffle, and receiving platform form a temporary material frame of a first shape in a first state. This temporary material frame, in its first shape, matches the shape of the inner cylinder cake, allowing it to precisely accommodate the inner cylinder of one cake. Furthermore, the first and second side baffles are in a stretched and taut state. As the upper baffle, first side baffle, second side baffle, and receiving platform transition from the first state to the second state, the temporary material frame changes from the first shape to the second shape. During this transition, the first and second side baffles elastically deform to maintain a match between the size of the temporary material frame and the inner cylinders loaded inside. After the temporary material frame transforms into the second shape, a second set of drive units drives the receiving platform to stack the inner cylinders in the temporary material frame it supports downwards onto the bottom of the trough. Thus, the hopper assembly completes one inner cylinder stacking cycle. The technical advantage of this application is that the hopper assembly can automatically stack the inner cylinder loaded by the feeding mechanism downwards, making it less likely to roll over or tip over, thus improving safety and the reliability of equipment operation, and reducing downtime caused by the inner cylinder rolling over or tipping over. Attached Figure Description
[0043] Figure 1 This is a schematic diagram of the hopper assembly in an embodiment of this application.
[0044] Figure 2 This is a schematic diagram of the hopper structure in an embodiment of this application.
[0045] Figure 3 This is one of the schematic diagrams showing the working state of the hopper assembly in the embodiments of this application.
[0046] Figure 4 This is the second schematic diagram of the working state of the hopper assembly in the embodiments of this application.
[0047] Figure 5 This is the third schematic diagram of the working state of the hopper assembly in the embodiments of this application.
[0048] Figure 6 This is the fourth schematic diagram of the working state of the hopper assembly in the embodiments of this application.
[0049] Figure 7 This is the fifth schematic diagram of the working state of the hopper assembly in the embodiments of this application.
[0050] Figure 8 This is a schematic diagram of the material receiving mechanism in the embodiments of this application.
[0051] Reference numerals: hopper structure 10, trough 11, discharge opening 12, back plate 13, vertical guard 14, receiving mechanism 20, receiving platform 21, sixth drive unit 221, seventh drive unit 222, variable material frame assembly 30, upper guard 31, first side guard 32, second side guard 33, first drive unit 341, second drive unit 342, third drive unit 343, fourth drive unit 344, fifth drive unit 345, elastic band 35, first shape control component 361, second shape control component 362, third shape control component 363, fourth shape control component 364, fifth shape control component 365, sixth shape control component 366. Detailed Implementation
[0052] The following are specific embodiments of this application, described in conjunction with the accompanying drawings, to further illustrate the technical solutions of this application. However, this application is not limited to these embodiments. In the following description, specific details such as particular configurations and components are provided merely to aid in a comprehensive understanding of the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope of protection of this application. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.
[0053] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0054] The inner tube cake is the basic unit in fireworks production. It is formed by assembling multiple inner tubes together with tie straps, resulting in a hexagonal shape. Before filling, the inner tube cake needs to be untied (the tie straps removed). During feeding, the feeding mechanism loads the inner tubes of the inner tube cake into the hopper. However, in ordinary hoppers, the inner tubes released after the tie straps are removed are prone to tumbling and tipping over as they are stacked to the bottom of the hopper, affecting subsequent filling steps and safety.
[0055] Therefore, this application provides a hopper assembly for a fireworks inner tube, including a hopper structure, a receiving mechanism, and a variable material frame assembly. The hopper structure has a material trough, and a material discharge opening is provided at the bottom of the trough.
[0056] The receiving mechanism includes a receiving platform and a second set of drive units; the receiving platform is located above the material discharge opening; the second set of drive units is used to drive the receiving platform to move. The variable material frame assembly includes an upper stop, a first side stop, a second side stop, and a first set of drive units; the upper stop is located above the receiving platform; the first side stop and the second side stop are located on both sides below the upper stop, and both are elastic elements; the first set of drive units is used to drive the upper stop, the first side stop, and the second side stop to move.
[0057] The upper baffle, the first side baffle, the second side baffle, and the receiving platform together form a temporary material frame of a first shape in the first state. The temporary material frame is adapted to the shape of the inner cylinder cake in the first shape and can be just right to fit into the inner cylinder of the inner cylinder cake. In addition, the first side baffle and the second side baffle are in a stretched and taut state.
[0058] The temporary material frame formed by the upper retaining edge, the first side retaining edge, the second side retaining edge, and the receiving platform transforms into a second shape in the second state. During the process of the temporary material frame transforming from the first shape to the second shape, the first side retaining edge and the second side retaining edge maintain the size of the temporary material frame matching the inner cylinder loaded inside it through elastic deformation.
[0059] The second set of drive units can drive the receiving platform to stack the inner cylinder of the temporary material frame downwards onto the bottom of the material trough after the temporary material frame is transformed into the second shape.
[0060] Therefore, on the one hand, the temporary material frame can reduce the rolling and overturning of the inner cylinder during the material dropping process by changing its shape. On the other hand, during the process of the temporary material frame changing from the first shape to the second shape, the first and second side flanges elastically deform to keep the size of the temporary material frame matched with the inner cylinder it is loaded with, avoiding excessive gap space inside the temporary material frame and maintaining the restraint on the inner cylinder, thereby reducing the rolling and overturning of the inner cylinder during the deformation process.
[0061] The aforementioned hopper assembly can automatically stack the inner cylinder loaded by the feeding mechanism downwards, making it less prone to rolling and tipping over, thus improving safety and the reliability of equipment operation, and reducing downtime caused by the inner cylinder rolling and tipping over.
[0062] The above-mentioned hopper assembly will be described below with reference to the accompanying drawings.
[0063] refer to Figures 1-8 The hopper assembly includes a hopper structure 10, a receiving mechanism 20, and a variable material frame assembly 30. The hopper structure 10 has a trough 11 with a discharge opening 12 at its bottom. The receiving mechanism 20 includes a receiving platform 21 and a second set of drive units; the receiving platform 21 is located above the discharge opening 12; the second set of drive units drives the receiving platform 21. The variable material frame assembly 30 includes an upper stop 31, a first side stop 32, a second side stop 33, and a first set of drive units; the upper stop 31 is located above the receiving platform 21; the first side stop 32 and the second side stop 33 are located on opposite sides below the upper stop 31 and are both elastic elements; the first set of drive units drives the upper stop 31, the first side stop 32, and the second side stop 33.
[0064] refer to Figure 3 and Figure 4In the first state, the upper retaining edge 31, the first side retaining edge 32, the second side retaining edge 33, and the receiving platform 21 together form a temporary material frame of a first shape. This temporary material frame, in its first shape, conforms to the shape of the inner cylinder cake, allowing it to fit precisely into the inner cylinder of one inner cylinder cake. Furthermore, the first side retaining edge 32 and the second side retaining edge 33 are in a stretched and taut state. In the first state, the temporary material frame is hexagonal, conforming to the shape of the hexagonal inner cylinder cake. Specifically, the upper retaining edge 31 forms the upper side of the hexagon, the receiving platform 21 forms the lower side, the first side retaining edge 32 forms the two left sides, and the second side retaining edge 33 forms the two right sides. In this state, the temporary material frame can precisely fit into the inner cylinder of one inner cylinder cake.
[0065] refer to Figure 5 and Figure 6 The temporary material frame formed by the upper retaining edge 31, the first side retaining edge 32, the second side retaining edge 33, and the receiving platform 21 transforms into a second shape in the second state. In the second state, the temporary material frame transforms into a quadrilateral structure, wherein the upper retaining edge 31 forms the upper side of the quadrilateral structure, the receiving platform 21 forms the lower side of the quadrilateral structure, the first side retaining edge 32 forms the left side of the quadrilateral structure, and the second side retaining edge 33 forms the right side of the quadrilateral structure. It should be noted that the quadrilateral structure here includes the upper side, the lower side, the left side, and the right side, and can form a quadrilateral or an approximate quadrilateral.
[0066] Specifically, the upper retaining edge 31, the first side retaining edge 32, the second side retaining edge 33, and the receiving platform 21 can be switched to either the first or second state by changing their position or shape. It should be noted that during the state transition, it is not required that the upper retaining edge 31, the first side retaining edge 32, the second side retaining edge 33, and the receiving platform 21 all change position or shape. In some technical solutions, during the transition between the first and second states, the first set of driving units drives the upper retaining edge 31, the first side retaining edge 32, and the second side retaining edge 33 to move, while the receiving platform 21 remains stationary, acting as the bottom (lower edge) of the temporary material frame.
[0067] In the first state, the temporary material frame is hexagonal, which matches the shape of the hexagonal inner cylinder cake, allowing one inner cylinder cake to be loaded. In some technical solutions, the inner cylinder filling equipment is equipped with a feeding mechanism that automatically removes the cable ties of the inner cylinder cake and loads the inner cylinder, after the cable ties are removed, into the hexagonal temporary material frame. In the first state, the temporary material frame matches the shape of the inner cylinder cake, thus precisely securing the inner cylinder.
[0068] In the second state, the temporary material frame transforms into a quadrilateral structure, with the receiving platform 21 acting as the bottom (lower side) of the quadrilateral structure. In this state, the second set of drive units can drive the receiving platform 21 to push the inner cylinder of the temporary material frame it supports downwards onto the bottom of the material trough 11. Compared to a hexagon, the quadrilateral structure can reduce the rolling and overturning of the inner cylinder during the material dropping process.
[0069] During the process of the temporary material frame changing from the first shape to the second shape, the first side guard 32 and the second side guard 33 maintain the size of the temporary material frame and the inner cylinder loaded inside it through elastic deformation, thereby avoiding excessive gap space in the temporary material frame, maintaining the restraint on the inner cylinder, and thus reducing the phenomenon of the inner cylinder rolling and overturning during the deformation process of the temporary material frame.
[0070] In one embodiment of this application, the variable material frame assembly 30 includes an elastic band 35 and a plurality of shape control members. The plurality of shape control members are distributed at different positions to collectively tension the elastic band 35 so that the elastic band 35 maintains a predetermined shape. The upper stop 31, the first side stop 32, and the second side stop 33 are configured as different portions of the elastic band 35. Under the drive of a first set of drive units, the plurality of shape control members can change their positional distribution to transform the temporary material frame into a hexagonal or quadrilateral structure.
[0071] Furthermore, the shape control components include a first shape control component 361, a second shape control component 362, a third shape control component 363, a fourth shape control component 364, a fifth shape control component 365, and a sixth shape control component 366.
[0072] The first shape control element 361 and the second shape control element 362 are arranged on the bottom sides of the temporary material frame; wherein the first shape control element 361 is located on the left and the second shape control element 362 is located on the right. The third shape control element 363 and the fourth shape control element 364 are arranged on the top sides of the temporary material frame; wherein the third shape control element 363 is located on the left and the fourth shape control element 364 is located on the right. The fifth shape control element 365 and the sixth shape control element 366 are arranged on the middle sides of the temporary material frame; wherein the fifth shape control element 365 is located on the left and the sixth shape control element 366 is located on the right.
[0073] Part A on the elastic band 35 is fixedly connected to the first shape control member 361, and part B on the elastic band 35 is fixedly connected to the second shape control member 362. The portion of the elastic band 35 between parts A and B passes around the third shape control member 363, the fourth shape control member 364, the fifth shape control member 365, and the sixth shape control member 366, and can be stretched outward by the third shape control member 363, the fourth shape control member 364, the fifth shape control member 365, and the sixth shape control member 366. Further, parts A and B are the two ends of the elastic band 35, respectively, and the third shape control member 363, the fourth shape control member 364, the fifth shape control member 365, and the sixth shape control member 366 are located inside the elastic band 35 and are used to stretch the elastic band 35 outward.
[0074] In the first state, the portion of the elastic band 35 between the third shape control member 363 and the fifth shape control member 365, and the portion of the elastic band 35 between the first shape control member 361 and the fifth shape control member 365, respectively form the two left sides of the hexagon; the portion of the elastic band 35 between the fourth shape control member 364 and the sixth shape control member 366, and the portion of the elastic band 35 between the second shape control member 362 and the sixth shape control member 366, respectively form the two right sides of the hexagon; the portion of the elastic band 35 between the third shape control member 363 and the fourth shape control member 364 forms the top side of the hexagon.
[0075] In the second state, the portion of the elastic band 35 between the first shape control member 361 and the third shape control member 363 forms the left side of the quadrilateral structure; the portion of the elastic band 35 between the second shape control member 362 and the fourth shape control member 364 forms the right side of the quadrilateral structure; and the portion of the elastic band 35 between the third shape control member 363 and the fourth shape control member 364 forms the top side of the quadrilateral structure.
[0076] Specifically, the shape control component can be fixedly connected, movably connected, or not connected to the elastic band. Figures 3-6 In the structure shown, the first shape control member 361 and the second shape control member 362 are fixedly connected to the elastic band, while the third shape control member 363, the fourth shape control member 364, the fifth shape control member 365, and the sixth shape control member 366 are not connected to the elastic band, but only tension the elastic band from the inside out. Furthermore, the shape control members can be designed in various shapes. Figures 3-6 In the structure shown, the shape control component is designed as a column.
[0077] In one embodiment of this application, during the process of the temporary material frame changing from a first shape to a second shape, the first shape control member 361 moves to the left, the second shape control member 362 moves to the right; the third shape control member 363 moves to the left and downwards; the fourth shape control member 364 moves to the right and downwards; and the fifth shape control member 365 and the sixth shape control member 366 remain fixed. During this process, the portion of the elastic band 35 between the third shape control member 363 and the fourth shape control member 364 lengthens, the portion of the elastic band 35 between the first shape control member 361 and the third shape control member 363 shortens, the portion of the elastic band 35 between the second shape control member 362 and the fourth shape control member 364 shortens, and the corners of the elastic band 35 at the fifth shape control member 365 and the sixth shape control member 366 become straighter, ultimately transforming into a flatter quadrilateral structure.
[0078] The first set of drive units includes a first drive unit 341, a second drive unit 342, a third drive unit 343, a fourth drive unit 344, and a fifth drive unit 345. Specifically, the first drive unit 341 drives the first shape control member 361 to move laterally, the second drive unit 342 drives the second shape control member 362 to move laterally, the third drive unit 343 drives the third shape control member 363 to move laterally, the fourth drive unit 344 drives the fourth shape control member 364 to move laterally, and the fifth drive unit 345 drives the third shape control member 363 and the fourth shape control member 364 to move vertically. In a specific embodiment, the first drive unit 341, the second drive unit 342, the third drive unit 343, the fourth drive unit 344, and the fifth drive unit 345 are configured as cylinders.
[0079] In one embodiment of this application, the receiving mechanism 20 further includes a lifting bracket; the second set of driving units includes a sixth driving unit 221 and a seventh driving unit 222. The sixth driving unit 221 is assembled between the hopper structure 10 and the lifting bracket, and is used to drive the lifting bracket to move up and down relative to the hopper structure 10. The seventh driving unit 222 is assembled between the lifting bracket and the receiving platform 21, and is used to drive the receiving platform 21 to move horizontally relative to the lifting bracket. When the inner cylinder is stacked downwards, the sixth driving unit 221 drives the lifting bracket to move down to the stacking height of the lower inner cylinder. At this height, as the seventh driving unit 222 drives the receiving platform 21 to exit the material trough 11, the lifting bracket blocks the inner cylinder on the receiving platform 21, causing the inner cylinder on the receiving platform 21 to separate from the receiving platform 21 and fall onto the stacked inner cylinder below. In a specific embodiment, both the sixth driving unit 221 and the seventh driving unit 222 are cylinders.
[0080] After the temporary material frame transforms into its second shape, it becomes a quadrilateral structure, with the receiving platform 21 serving as the bottom (lower side) of the quadrilateral structure. At this point, the receiving mechanism 20 can stack the inner cylinders in the temporary material frame downwards onto the bottom of the material trough 11. First, the sixth drive unit 221 drives the lifting bracket to move down to the stacking height of the lower inner cylinders. Then, the seventh drive unit 222 drives the receiving platform 21 to exit the material trough 11, and the lifting bracket blocks the inner cylinders on the receiving platform 21, causing the inner cylinders on the receiving platform 21 to separate from the receiving platform 21 and fall onto the stacked inner cylinders below.
[0081] In one embodiment of this application, the hopper structure 10 includes a back plate 13, and the back plate 13 is fixed with two opposing vertical baffles 14, and a trough 11 is formed between the two vertical baffles 14.
[0082] When the temporary material frame is transformed into a four-sided structure, the left and right sides of the temporary material frame are aligned with the two vertical retaining edges, respectively. When the receiving platform stacks the inner cylinder downwards, the receiving platform supports the inner cylinder falling out of the temporary material frame and moves it down along the vertical retaining edges in the material trough to the stacking height of the inner cylinder below. At this height, it exits the material trough so that the inner cylinder on it falls onto the stacked inner cylinder below.
[0083] This application embodiment also provides an inner tube filling device for combined fireworks, including the hopper assembly provided in the previous part. The hopper assembly includes a hopper structure, a receiving mechanism, and a variable material frame assembly. The hopper structure has a material trough with a discharge opening at the bottom. The receiving mechanism includes a receiving platform and a second set of drive units; the receiving platform is located above the discharge opening; the second set of drive units drives the receiving platform. The variable material frame assembly includes an upper stop, a first side stop, a second side stop, and a first set of drive units; the upper stop is located above the receiving platform; the first side stop and the second side stop are located on opposite sides below the upper stop and are both elastic elements; the first set of drive units drives the upper stop, the first side stop, and the second side stop.
[0084] On the one hand, the temporary material frame can reduce the tumbling and overturning of the inner cylinder during the material unloading process by changing its shape. On the other hand, during the transformation of the temporary material frame from the first shape to the second shape, the first and second side flanges elastically deform to ensure that the size of the temporary material frame matches the size of the inner cylinder it contains, preventing excessive gaps within the temporary material frame and maintaining constraint on the inner cylinder. This reduces the tumbling and overturning of the inner cylinder during the deformation process. For a more detailed explanation, please refer to the previous section; it will not be repeated here.
[0085] This application also provides a production line for combined fireworks, including the inner cylinder filling equipment provided in the previous section. The inner cylinder filling equipment includes the hopper assembly provided in the previous section. In addition, the production line also includes paper filling equipment, military-grade gunpowder filling equipment, etc. More detailed descriptions can be found in the previous section, and will not be repeated here.
[0086] In this application, each drive unit, including the first drive unit, the second drive unit, the third drive unit, the fourth drive unit, the fifth drive unit, the sixth drive unit 221 and the seventh drive unit 222, can be designed as various types of drive devices, such as cylinders, electric cylinders, etc., according to the actual scheme.
[0087] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0088] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0089] The specific embodiments described herein are merely illustrative examples of the technical solutions of this application. Those skilled in the art to which this application pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, but 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, include: The hopper structure is equipped with a trough, and a material discharge opening is provided at the bottom of the trough; The receiving mechanism includes a receiving platform and a second set of drive units; The receiving platform is located above the material discharge opening; the second set of drive units is used to drive the receiving platform to move; The variable material frame assembly includes an upper stop, a first side stop, a second side stop, and a first set of drive units; the upper stop is located above the receiving platform; the first side stop and the second side stop are located on both sides below the upper stop, and both are elastic elements; the first set of drive units is used to drive the upper stop, the first side stop, and the second side stop to move. The upper guard edge, the first side guard edge, the second side guard edge, and the receiving platform together form a temporary material frame of a first shape in the first state; The temporary material frame is adapted to the shape of the inner cylinder cake in the first shape, and can be just right to fit into the inner cylinder of an inner cylinder cake. Furthermore, the first side guard and the second side guard are in a stretched and taut state. The temporary material frame formed by the upper guard edge, the first side guard edge, the second side guard edge, and the receiving platform transforms into a second shape in the second state; During the process of the temporary material frame changing from the first shape to the second shape, the first side guard and the second side guard elastically deform to keep the size of the temporary material frame matching the inner cylinder loaded inside it; The second set of drive units can drive the receiving platform to stack the inner cylinder of the temporary material frame downwards onto the bottom of the material trough after the temporary material frame is transformed into the second shape.
2. The hopper assembly for the inner tube of fireworks according to claim 1, characterized in that, In the first state, the temporary material frame is hexagonal, which is adapted to the shape of the inner cylinder cake of the hexagon; wherein, the upper stop edge forms the upper side of the hexagon, the receiving platform forms the lower side of the hexagon, the first side stop edge forms the two sides on the left side of the hexagon, and the second side stop edge forms the two sides on the right side of the hexagon. In the second state, the temporary material frame is transformed into a quadrilateral structure, wherein the upper stop constitutes the upper side of the quadrilateral structure, the receiving platform constitutes the lower side of the quadrilateral structure, the first side stop constitutes the left side of the quadrilateral structure, and the second side stop constitutes the right side of the quadrilateral structure.
3. The hopper assembly for the inner tube of fireworks according to claim 2, characterized in that, The variable frame assembly includes an elastic band and multiple shape control components; The multiple shape control components are distributed at different positions to work together to tension the elastic band so that the elastic band maintains a predetermined shape; The upper stop, the first side stop, and the second side stop are configured as different parts of the elastic band; Driven by the first set of driving units, the plurality of shape control components can change their position distribution to transform the temporary material frame into a hexagonal or quadrilateral structure.
4. The hopper assembly for the inner tube of fireworks according to claim 3, characterized in that, The shape control components include a first shape control component, a second shape control component, a third shape control component, a fourth shape control component, a fifth shape control component, and a sixth shape control component; The first shape control component and the second shape control component are arranged on both sides of the bottom of the temporary material frame; wherein, the first shape control component is located on the left side and the second shape control component is located on the right side; The third shape control component and the fourth shape control component are arranged on the top two sides of the temporary material frame; wherein, the third shape control component is located on the left side and the fourth shape control component is located on the right side; The fifth shape control component and the sixth shape control component are arranged on both sides of the middle part of the temporary material frame; wherein, the fifth shape control component is located on the left side and the sixth shape control component is located on the right side; The A portion of the elastic band is fixedly connected to the first shape control member, and the B portion of the elastic band is fixedly connected to the second shape control member; the portion of the elastic band between the A portion and the B portion bypasses the third shape control member, the fourth shape control member, the fifth shape control member, and the sixth shape control member, and can be stretched outward by the third shape control member, the fourth shape control member, the fifth shape control member, and the sixth shape control member; In the first state, the portion of the elastic band between the third shape control member and the fifth shape control member, and the portion of the elastic band between the first shape control member and the fifth shape control member, respectively form the two left sides of the hexagon; the portion of the elastic band between the fourth shape control member and the sixth shape control member, and the portion of the elastic band between the second shape control member and the sixth shape control member, respectively form the two right sides of the hexagon; the portion of the elastic band between the third shape control member and the fourth shape control member forms the top side of the hexagon. In the second state, the portion of the elastic band between the first shape control member and the third shape control member forms the left side of the quadrilateral structure; the portion of the elastic band between the second shape control member and the fourth shape control member forms the right side of the quadrilateral structure; and the portion of the elastic band between the third shape control member and the fourth shape control member forms the top side of the quadrilateral structure.
5. The hopper assembly for the inner tube of fireworks according to claim 4, characterized in that, During the process of the temporary material frame changing from the first shape to the second shape, the first shape control component moves to the left, the second shape control component moves to the right; the third shape control component moves to the left and downwards; the fourth shape control component moves to the right and downwards; the fifth shape control component and the sixth shape control component remain fixed.
6. The hopper assembly for the inner tube of fireworks according to claim 5, characterized in that, The first group of drive units includes: The first driving unit is used to drive the first shape control member to move laterally. The second driving unit is used to drive the second shape control member to move laterally. The third driving unit is used to drive the third shape control component to move laterally. The fourth drive unit is used to drive the fourth shape control member to move laterally; The fifth driving unit is used to drive the third shape control member and the fourth shape control member to move vertically.
7. The hopper assembly for the inner tube of fireworks according to claim 1, characterized in that, The receiving mechanism further includes a lifting bracket; the second group of drive units includes a sixth drive unit and a seventh drive unit; The sixth drive unit is assembled between the hopper structure and the lifting bracket, and is used to drive the lifting bracket to move up and down relative to the hopper structure; The seventh drive unit is assembled between the lifting bracket and the receiving platform, and is used to drive the receiving platform to move horizontally relative to the lifting bracket. When the inner cylinder is stacked downwards, the sixth drive unit drives the lifting bracket to move down to the stacking height of the lower inner cylinder. At this height, as the seventh drive unit drives the receiving platform to exit the material trough, the lifting bracket blocks the inner cylinder on the receiving platform, causing the inner cylinder on the receiving platform to separate from the receiving platform and fall onto the stacked inner cylinder below.
8. The hopper assembly for the inner tube of a firework according to any one of claims 2-6, characterized in that, The hopper structure includes a back plate, and the back plate is fixed with two opposing vertical baffles, forming a trough between the two vertical baffles; When the temporary material frame is transformed into a four-sided structure, the left and right sides of the temporary material frame are aligned with the two vertical guard edges, respectively. When the receiving platform is stacking the inner cylinder downwards, the receiving platform supports the inner cylinder falling out of the temporary material frame and moves down along the vertical side of the material trough to the stacking height of the inner cylinder below. At this height, it exits the material trough so that the inner cylinder on it falls onto the stacked inner cylinder below.
9. A filling device for the inner tube of a combination firework, characterized in that, Includes the hopper assembly as described in any one of claims 1-8.
10. A production line for combination fireworks, characterized in that, Includes the inner cylinder filling device as described in claim 9.