Hopper assembly, inner cylinder filling equipment for combined fireworks and production line

Abstract

The utility model provides a hopper assembly, an inner cylinder filling device for combined fireworks and a production line, and relates to the technical field of firework production equipment, the hopper assembly comprises a hopper structure, a material frame mechanism and a material receiving mechanism. The material frame mechanism comprises an upper flange, a first side flange, a second side flange and a first set of driving units. And the material receiving mechanism comprises a material receiving platform and a second group of driving units. When the material frame mechanism is in the initial state and the material receiving platform is located at the initial position, the upper blocking edge, the first side blocking edge, the second side blocking edge and the material receiving platform define a temporary material frame used for receiving the inner barrels, as the first side blocking edge and the second side blocking edge stretch towards the two sides, the inner barrels in the temporary material frame are flatly laid and released to the material receiving platform, and in addition, the inner barrels in the temporary material frame are placed on the material receiving platform. And the upper flange moves downwards along with the inner cylinder in the temporary material frame. And the receiving platform downwards stacks the inner barrels on the receiving platform to the bottom of the trough space. According to the hopper assembly, the inner barrels loaded by the feeding mechanism can be automatically stacked downwards, and rolling and reversing are not prone to occurring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fireworks production equipment, in particular to a hopper assembly, an inner tube filling equipment for combined fireworks and a production line. BACKGROUND

[0002] The inner tube of fireworks is a core effect component of combined fireworks, which largely determines the form, color and effect of fireworks blooming in the air. When producing combined fireworks, the production equipment needs to fill the inner tube into the fireworks launching tube, therefore, the production equipment of combined fireworks is usually provided with a hopper for storing the inner tube of fireworks, and the inner tube in the hopper falls downward to be transferred and filled into the fireworks launching tube.

[0003] Generally, the inner tube cake is a basic unit of fireworks production, and the inner tube cake is composed of a plurality of inner tubes combined together by a strap, and is hexagonal. The strap is removed before the inner tube is filled. When feeding, the inner tube can be loaded into the hopper through a feeding mechanism. However, for ordinary hoppers, the inner tube after being unpacked is prone to rolling and overturning during the process of falling and piling up, which affects the subsequent filling step and safety. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the present application is to provide a hopper assembly, an inner tube filling equipment for combined fireworks and a production line to solve the above problems of the prior art.

[0005] A hopper assembly comprises:

[0006] A hopper structure is provided with a hopper space, and a feeding port is provided at the bottom of the hopper space;

[0007] A material frame mechanism comprises an upper stop edge, a first side stop edge, a second side stop edge and a first group of driving units. The upper stop edge, the first side stop edge and the second side stop edge are arranged in the hopper space. The first side stop edge and the second side stop edge are located on opposite sides of the upper stop edge. The first group of driving units is used to drive the upper stop edge, the first side stop edge and the second side stop edge to act;

[0008] A material receiving mechanism comprises a material receiving platform and a second group of driving units. The material receiving platform is located below the first side stop edge and the second side stop edge. The second group of driving units is used to drive the material receiving platform to act;

[0009] When the material frame mechanism is in an initial state and the material receiving platform is in an initial position, the upper stop edge, the first side stop edge, the second side stop edge and the material receiving platform form a temporary material frame for receiving the inner tube. As the first side stop edge and the second side stop edge respectively open to both sides, the inner tube in the temporary material frame is released flat on the material receiving platform, and the upper stop edge moves downward with the inner tube in the temporary material frame.

[0010] Under the driving of the second group of driving units, the receiving platform can sequentially stack the inner barrels on it downward onto the bottom of the chute space.

[0011] Optionally, the first group of driving units comprises a first driving unit and a second driving unit.

[0012] The first driving unit is assembled between the hopper structure and the upper baffle and can drive the upper baffle to move up and down relative to the hopper structure.

[0013] The second driving unit can drive the first side baffle and the second side baffle to rotate relative to the upper baffle.

[0014] During the process of laying out the inner barrels in the temporary frame onto the receiving platform, the second driving unit drives the first side baffle and the second side baffle to open to both sides respectively, and at the same time, the first driving unit drives the upper baffle to move downward so that the upper baffle keeps in contact with the inner barrels.

[0015] Optionally, a second driving unit is arranged above each of the first side baffle and the second side baffle, and the second driving units on both sides act synchronously to drive the first side baffle and the second side baffle to rotate symmetrically.

[0016] Optionally, the first side baffle and the second side baffle are movably connected with the upper baffle, so that the first side baffle, the second side baffle and the upper baffle form a movable frame with an open bottom.

[0017] Optionally, the first side baffle and the second side baffle are movably connected with the hopper structure.

[0018] The upper baffle is a telescopic mechanism and can be telescoped horizontally; as the first side baffle and the second side baffle open to both sides respectively, the upper baffle moves downward and telescopes horizontally at the same time to keep both ends thereof in contact with the first side baffle and the second side baffle respectively.

[0019] Optionally, the receiving mechanism further comprises a lifting support; the second group of driving units comprises a third driving unit and a fourth driving unit.

[0020] The third driving unit is assembled between the hopper structure and the lifting support and is used to drive the lifting support to lift relative to the hopper structure.

[0021] The fourth driving unit is assembled between the lifting support and the receiving platform and is used to drive the receiving platform to move horizontally relative to the lifting support.

[0022] When the inner tube is stacked downwardly, the third driving unit drives the lifting support to move from the initial position to the stacking height of the lower inner tube, at which height, as the fourth driving unit drives the receiving platform to exit the inner tube stacking area, the lifting support blocks the inner tube on the receiving platform to separate the inner tube from the receiving platform to fall onto the lower stacked inner tube.

[0023] Optionally, the hopper structure is provided with a guide rod on each side of the chute space, which is in sliding fit with the lifting support for guiding the lifting support to lift and lower.

[0024] Optionally, the lifting support is provided with a long slot extending transversely; the receiving platform is in plate structure, which is fitted into the long slot; the lifting support is formed with a blocking portion above the long slot, which can block the inner tube on the receiving platform when the receiving platform exits the inner tube stacking area.

[0025] Optionally, the temporary hopper frame is hexagonal, which is fitted to the shape of the hexagonal inner tube cake.

[0026] Optionally, the upper blocking edge constitutes the upper edge of the temporary hopper frame, the receiving platform constitutes the lower edge of the temporary hopper frame, the first side blocking edge constitutes the left two edges of the temporary hopper frame, and the second side blocking edge constitutes the right two edges of the temporary hopper frame.

[0027] Optionally, the hopper structure comprises a back plate, which is fixed with two oppositely arranged vertical blocking edges, and the chute space is formed between the two vertical blocking edges.

[0028] In another aspect, the present application further provides an inner tube filling device for assembling fireworks, comprising the above hopper assembly.

[0029] In another aspect, the present application further provides a production line for assembling fireworks, comprising the above inner tube filling device.

[0030] In the present application, the material frame mechanism and the material receiving mechanism cooperate to receive the inner cylinder and sequentially stack the inner cylinder on the bottom of the material groove space. When the material frame mechanism is in the initial state and the material receiving platform is in the initial position, the upper stop edge, the first side stop edge, the second side stop edge and the material receiving platform form a temporary material frame for receiving the inner cylinder, and as the first side stop edge and the second side stop edge respectively open to both sides, the inner cylinder in the temporary material frame is laid flat and released onto the material receiving platform, and the upper stop edge moves downward with the inner cylinder in the temporary material frame; under the drive of the second group of driving units, the material receiving platform can stack the inner cylinder on it downward on the bottom of the material groove space, and thus the hopper assembly completes the inner cylinder stacking once. The technical effect of the technical scheme of the present application is that the hopper assembly can automatically stack the inner cylinder loaded by the feeding mechanism downward, which is not easy to roll and overturn, thereby improving the reliability and safety of the equipment operation. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is one of the structural schematic diagrams of the hopper assembly in the embodiment of the present application.

[0032] Figure 2 is another structural schematic diagram of the hopper assembly in the embodiment of the present application.

[0033] Figure 3 is a structural schematic diagram of the hopper structure in the embodiment of the present application.

[0034] Figure 4 is a structural schematic diagram of the material frame mechanism in the embodiment of the present application.

[0035] Figure 5 is a structural schematic diagram of the material receiving mechanism in the embodiment of the present application.

[0036] Figure 6 is a structural schematic diagram of the hopper assembly in the embodiment of the present application.

[0037] Figure 7 is a structural schematic diagram of the hopper assembly in the embodiment of the present application.

[0038] The drawings show: hopper structure 10, material groove space 11, back plate 12, vertical stop edge 13, guide rod 14, material frame mechanism 20, upper stop edge 21, first side stop edge 22, second side stop edge 23, first driving unit 241, second driving unit 242, material receiving mechanism 30, material receiving platform 31, lifting bracket 32, long hole 321, blocking part 322, third driving unit 331, fourth driving unit 332, temporary material frame S, inner cylinder P. DETAILED DESCRIPTION

[0039] The technical solutions of the present application are further described below in conjunction with the drawings and specific embodiments of the present application, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help 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 can be made to the embodiments described herein without departing from the scope of protection of the present application. In addition, descriptions of known functions and structures are omitted for the sake of clarity and brevity.

[0040] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0041] It should be noted that the inner cylinder cake is the basic unit of firework production, and the inner cylinder cake is combined by a plurality of inner cylinders through a strap, and is hexagonal. Before filling, the cake needs to be unpacked (the strap of the inner cylinder cake is removed). When loading, the inner cylinder can be loaded into the hopper through the loading mechanism. However, for ordinary hoppers, the unpacked inner cylinder is prone to rolling and overturning during the falling and stacking process, which affects the subsequent filling step and safety.

[0042] Therefore, the present application provides a hopper assembly which can automatically stack the inner cylinder loaded by the loading mechanism downward, and is not prone to rolling and overturning, thereby improving the reliability and safety of the equipment operation.

[0043] In the embodiments of the present application, the hopper assembly comprises a hopper structure, a material frame mechanism, and a material receiving mechanism. The hopper structure is provided with a material groove space, and a material falling port is arranged at the bottom of the material groove space.

[0044] The material frame mechanism comprises an upper blocking edge, a first side blocking edge, a second side blocking edge, and a first set of driving units. The upper blocking edge, the first side blocking edge, and the second side blocking edge are arranged in the material groove space. The first side blocking edge and the second side blocking edge are located on opposite sides of the upper blocking edge. The first set of driving units is used to drive the upper blocking edge, the first side blocking edge, and the second side blocking edge to move.

[0045] The material receiving mechanism comprises a material receiving platform and a second set of driving units. The material receiving platform is located below the first side blocking edge and the second side blocking edge. The second set of driving units is used to drive the material receiving platform to move.

[0046] When the material frame mechanism is in the initial state and the material receiving platform is in the initial position, the upper blocking edge, the first side blocking edge, the second side blocking edge, and the material receiving platform form a temporary material frame for receiving the inner cylinder. As the first side blocking edge and the second side blocking edge open to both sides, respectively, the inner cylinder in the temporary material frame is laid flat and released onto the material receiving platform, and the upper blocking edge moves downward following the inner cylinder in the temporary material frame. Under the driving of the second set of driving units, the material receiving platform can sequentially stack the inner cylinder thereon onto the bottom of the material groove space.

[0047] The hopper assembly is described below in conjunction with the accompanying drawings.

[0048] Referring to Figure 1 and Figure 2 , the hopper assembly comprises a hopper structure 10, a frame mechanism 20, and a receiving mechanism 30. The hopper structure 10 is provided with a hopper space 11, and a discharge port is arranged at the bottom of the hopper space 11. The frame mechanism 20 comprises an upper baffle 21, a first side baffle 22, a second side baffle 23, and a first set of driving units. The upper baffle 21, the first side baffle 22, and the second side baffle 23 are arranged in the hopper space 11. The first side baffle 22 and the second side baffle 23 are arranged on opposite sides below the upper baffle 21 and are movably connected to the upper baffle 21, so that the first side baffle 22, the second side baffle 23, and the upper baffle 21 form a movable frame with an open bottom. The first set of driving units can drive the frame mechanism 20 to move to an initial state or an open state. The receiving mechanism 30 comprises a receiving platform 31 and a second set of driving units. The receiving platform 31 is arranged below the movable frame. The second set of driving units is used to drive the receiving platform 31 to move.

[0049] When the frame mechanism 20 is in the initial state and the receiving platform 31 is in the initial position, the movable frame (the upper baffle 21, the first side baffle 22, and the second side baffle 23) and the receiving platform 31 form a temporary frame S for receiving the inner tubes P. As the first side baffle 22 and the second side baffle 23 are opened to both sides, the inner tubes in the temporary frame S are laid flat and released onto the receiving platform 31. At the same time, the upper baffle 21 moves downward following the inner tubes in the temporary frame S, and the frame mechanism is adjusted from the initial state to the open state. Under the drive of the second set of driving units, the receiving platform 31 can sequentially stack the inner tubes thereon onto the bottom of the hopper space 11.

[0050] The hopper assembly is applied to an inner tube loading device for combined fireworks. In an exemplary scheme, the bottom of the hopper space 11 is provided with a slide, and the inner tubes at the bottom of the hopper space 11 are first dropped onto the slide and then pushed out by a pushing mechanism. After the pushing mechanism pushes the inner tubes on the slide out, the inner tubes are further transferred to the combined fireworks. The bottom of the hopper space 11 is provided with a discharge port, and during operation, the inner tubes need to be stacked on the bottom of the hopper space 11.

[0051] Referring to Figure 1 and Figure 2 , during operation of the hopper assembly, first, the first set of driving units drives the frame mechanism 20 to move to the initial state, and the second set of driving units drives the receiving platform 31 to move to the initial position. At this time, the movable frame and the receiving platform 31 form a temporary frame S, which can be used to receive the inner tubes pushed by the feeding mechanism. In Figure 1 and Figure 2In the shown structure, the temporary material frame is hexagonal, which is adapted to the shape of the hexagonal inner cylinder cake, and can exactly contain an inner cylinder contained in the inner cylinder cake. After the temporary material frame S is loaded with the inner cylinder, as the first group of driving units drives the material frame mechanism 20 from the initial state to the open state, the inner cylinder P in the temporary material frame S is released flat on the receiving platform 31. Finally, under the drive of the second group of driving units, the receiving platform 31 stacks the inner cylinder on it downward on the bottom of the material slot space 11.

[0052] The movable connection allows relative movement between the connected components. In the present embodiment, the first side stop edge 22 and the second side stop edge 23 are movably connected with the upper stop edge 21, so that the first side stop edge 22 and the second side stop edge 23 can rotate relative to the upper stop edge 21 to achieve opening to both sides or closing to each other. In a specific scheme, the first side stop edge 22 and the second side stop edge 23 are hingedly connected with the upper stop edge 21.

[0053] Reference Figure 3 In an embodiment of the present application, the hopper structure 10 includes a back plate 12, and two opposite vertical stop edges 13 are fixed on the back plate 12, and the material slot space 11 is formed between the two vertical stop edges 13. The material slot space 11 extends downward to form an open material falling port at the bottom.

[0054] Further reference Figure 4 The first group of driving units includes a first driving unit 241 and a second driving unit 242. The first driving unit 241 is arranged between the hopper structure 10 and the upper stop edge 21, and can drive the upper stop edge 21 to move up and down relative to the hopper structure 10. The second driving unit 242 can drive the first side stop edge 22 and the second side stop edge 23 to rotate relative to the upper stop edge 21. In the process of releasing the inner cylinder in the temporary material frame flat on the receiving platform 31, the second driving unit 242 drives the first side stop edge 22 and the second side stop edge 23 to open to both sides respectively, and at the same time, the first driving unit 241 drives the upper stop edge 21 to move downward so that the upper stop edge 21 keeps in contact with the inner cylinder. Figure 4 The rotation direction A1 of the first side stop edge 22, the rotation direction A2 of the second side stop edge 23, and the movement direction A2 of the upper stop edge 21 are shown.

[0055] Specifically, the first group of driving units can drive the magazine mechanism 20 to actuate from the initial state to the open state. In the process of laying out the inner tubes in the temporary magazine to the receiving platform 31, the first group of driving units drives the magazine mechanism 20 to actuate from the initial state to the open state, in which the upper stop edge 21 moves downward, and the first side stop edge 22 and the second side stop edge 23 are respectively opened to both sides. The upper stop edge 21 follows the inner tubes in the temporary magazine S to move downward, so that the inner tubes have no enough space to tumble and overturn, thereby being able to maintain the direction in the process of laying out to the receiving platform 31. It should be understood that in the process of the upper stop edge 21 following the inner tubes in the temporary magazine S to move downward, the upper stop edge 21 can be in contact or not in contact with the inner tubes. In addition, in the process of the magazine mechanism 20 actuating from the open state to the initial state, the upper stop edge 21 moves upward, and the first side stop edge 22 and the second side stop edge 23 are close to each other.

[0056] It should be understood that the first group of driving units can include one or more driving units, and the driving units can be arranged in various types, such as electric cylinders, pneumatic cylinders, etc. Here, the first group of driving units includes a first driving unit 241 and a second driving unit 242. In an embodiment of the present application, a second driving unit 242 is arranged above each of the first side stop edge 22 and the second side stop edge 23, and the second driving units 242 on both sides act synchronously to drive the first side stop edge 22 and the second side stop edge 23 to rotate symmetrically.

[0057] Further referring to Figure 5 , the receiving mechanism 30 includes a receiving platform 31 and a second group of driving units. The receiving mechanism 30 further includes a lifting support 32, and the second group of driving units includes a third driving unit 331 and a fourth driving unit 332. The third driving unit 331 is arranged between the hopper structure 10 and the lifting support 32, and is used to drive the lifting support 32 to move up and down relative to the hopper structure 10. The fourth driving unit 332 is arranged between the lifting support 32 and the receiving platform 31, and is used to drive the receiving platform 31 to move horizontally relative to the lifting support 32. When the inner tubes are stacked downward, the third driving unit 331 drives the lifting support 32 to move from the initial position to the stacking height of the lower inner tubes, at which height, as the fourth driving unit 332 drives the receiving platform 31 to exit the inner tube stacking area, the lifting support 32 blocks the inner tubes on the receiving platform 31 to separate the inner tubes from the receiving platform 31 to fall onto the lower stacked inner tubes. Figure 5 The lifting movement direction B1 of the lifting support 32 relative to the hopper structure 10 and the horizontal movement direction B2 of the receiving platform 31 relative to the lifting support 32 are shown in the figure.

[0058] It should be understood that the second set of driving units can include one or more driving units, and the driving units can be arranged in various types, such as electric cylinders, pneumatic cylinders, etc. Here, the second set of driving units includes a third driving unit 331 and a fourth driving unit 332.

[0059] Under the driving of the second set of driving units, the receiving platform 31 can sequentially stack the inner barrels thereon onto the bottom of the chute space 11. Specifically, after the inner barrels in the temporary frame are laid flat and released onto the receiving platform 31, the lifting support 32 is first driven by the third driving unit 331 to move from the initial position to the stacking height of the lower inner barrels, thereby eliminating the height difference. At this height, as the fourth driving unit 332 drives the receiving platform 31 to exit the inner barrel stacking area, the lifting support 32 blocks the inner barrels on the receiving platform 31, causing the inner barrels to separate from the receiving platform 31 and fall onto the lower stacked inner barrels.

[0060] Reference Figures 1-3 In an embodiment of the present application, the hopper structure 10 is arranged with a guide rod 14 on each side of the chute space 11, and the guide rod 14 is in sliding fit with the lifting support 32 to guide the lifting support 32 to lift and lower. At the same time, a third driving unit 331 is arranged on each side of the chute space 11, and the third driving units 331 on both sides synchronously drive the lifting support 32 to lift and lower, which can make the lifting support 32 more balanced when lifting and lowering.

[0061] In an embodiment of the present application, referring to Figure 5 , the lifting support 32 is arranged with a long hole 321 extending transversely; the receiving platform 31 is in plate structure, which is adapted to the long hole 321 and is fitted into the long hole 321; the lifting support 32 is formed with a blocking portion 322 above the long hole 321, which can block the inner barrels on the receiving platform 31 when the receiving platform 31 exits the inner barrel stacking area. When the fourth driving unit 332 drives the receiving platform 31 to exit the inner barrel stacking area, the blocking portion 322 can block the inner barrels on the receiving platform 31, causing the inner barrels to separate from the receiving platform 31 and fall onto the lower stacked inner barrels.

[0062] Reference Figure 2 In an embodiment of the present application, the temporary frame is hexagonal, which is adapted to the shape of the hexagonal inner barrel cake. Among them, the upper blocking edge 21 constitutes the upper edge of the temporary frame, the receiving platform 31 constitutes the lower edge of the temporary frame, the first side blocking edge 22 constitutes the left two edges of the temporary frame, and the second side blocking edge 23 constitutes the right two edges of the temporary frame. In Figure 2In the structure shown, the upper baffle 21, the receiving platform 31, the first side baffle 22, and the second side baffle 23 together enclose a temporary frame S in the shape of a hexagon. The temporary frame S is hexagonal, which is adapted to the shape of the inner cylinder cake in a hexagonal shape. When the feeding mechanism feeds, the inner cylinder of an inner cylinder cake can be exactly loaded into the temporary frame S, without a large gap space, which can reduce the activity space of the inner cylinder and avoid the inner cylinder from rolling and overturning.

[0063] Reference Figure 6 and Figure 7 In an embodiment of the present application, the first side baffle 22 and the second side baffle 23 are both movably connected with the hopper structure 10. The upper baffle 21 is a telescopic mechanism and can be horizontally telescoped. As the first side baffle 22 and the second side baffle 23 respectively open to both sides, the upper baffle 21 moves downward while being horizontally telescoped to keep both ends of the upper baffle 21 in contact with the first side baffle 22 and the second side baffle 23, respectively.

[0064] Based on Figure 6 and Figure 7 In the structure shown, when the hopper assembly is working, first, the first group of driving units drives the upper baffle 21, the first side baffle 22, and the second side baffle 23 to act to an initial state, and the second group of driving units drives the receiving platform 31 to act to an initial position. At this time, the upper baffle 21, the first side baffle 22, the second side baffle 23, and the receiving platform 31 enclose a temporary frame S, which can be used to receive the inner cylinder pushed by the feeding mechanism. In Figure 6 In the structure shown, the temporary frame is hexagonal, which is adapted to the shape of the inner cylinder cake in a hexagonal shape, and can exactly accommodate the inner cylinder contained in an inner cylinder cake. Reference Figure 7 After the temporary frame S is loaded with the inner cylinder, as the first side baffle 22 and the second side baffle 23 respectively open to both sides, the inner cylinder in the temporary frame S is laid and released onto the receiving platform 31, and the upper baffle 21 moves downward following the inner cylinder in the temporary frame S. During this process, the upper baffle 21 moves downward, and at the same time, the first side baffle 22 and the second side baffle 23 respectively open to both sides. The upper baffle 21 moves downward while being horizontally telescoped to keep both ends of the upper baffle 21 in contact with the first side baffle 22 and the second side baffle 23, respectively, completely cover the width space between the first side baffle 22 and the second side baffle 23, and move downward following the inner cylinder in the temporary frame S, so that the inner cylinder has no enough space to roll and overturn, thereby being able to keep the direction during the laying and releasing onto the receiving platform 31. It should be understood that the upper baffle 21 can or can not be in contact with the inner cylinder during the process of the upper baffle 21 moving downward following the inner cylinder in the temporary frame S. Finally, under the driving of the second group of driving units, the receiving platform 31 can sequentially stack the inner cylinder thereon onto the bottom of the chute space 11.

[0065] It should be noted that the upper baffle 21 is a telescopic mechanism that can be adjusted in extension and retraction. The telescopic mechanism is a conventional technical means in the prior art, which will not be explained and described herein.

[0066] The movable connection allows relative movement between the connected components. In the present embodiment, the first side baffle 22 and the second side baffle 23 are movably connected to the hopper structure 10, so that the first side baffle 22 and the second side baffle 23 can rotate relative to the hopper structure 10 to achieve opening to both sides or approaching each other. In a specific scheme, the first side baffle 22 and the second side baffle 23 are hingedly connected to the hopper structure 10.

[0067] The present application also provides an inner tube loading device for assembling fireworks, which comprises the hopper assembly described above. The inner tube loading device is used to load the inner tube into the fireworks launching tube, and the hopper assembly is used to store and output the inner tube.

[0068] In the present embodiment, the hopper assembly comprises a hopper structure, a frame mechanism, and a receiving mechanism. The hopper structure is provided with a hopper space and a discharge port at the bottom of the hopper space. The frame mechanism comprises an upper baffle, a first side baffle, a second side baffle, and a first set of driving units. The upper baffle, the first side baffle, and the second side baffle are arranged in the hopper space. The first side baffle and the second side baffle are located on opposite sides of the upper baffle. The first set of driving units is used to drive the upper baffle, the first side baffle, and the second side baffle to move. The receiving mechanism comprises a receiving platform and a second set of driving units. The receiving platform is located below the first side baffle and the second side baffle. The second set of driving units is used to drive the receiving platform to move. When the frame mechanism is in the initial state and the receiving platform is in the initial position, the upper baffle, the first side baffle, the second side baffle, and the receiving platform form a temporary frame for receiving the inner tube. As the first side baffle and the second side baffle open to both sides, respectively, the inner tube in the temporary frame is laid flat on the receiving platform, and the upper baffle moves downward following the inner tube in the temporary frame. Under the drive of the second set of driving units, the receiving platform can sequentially stack the inner tube thereon onto the bottom of the hopper space.

[0069] When the hopper assembly is in operation, after the temporary frame is loaded with the inner tube, as the first side baffle and the second side baffle open to both sides, respectively, the inner tube in the temporary frame is laid flat on the receiving platform, and the upper baffle moves downward following the inner tube in the temporary frame. During this process, the upper baffle moves downward, and at the same time, the first side baffle and the second side baffle open to both sides, respectively. The upper baffle moves downward following the inner tube in the temporary frame, so that the inner tube does not have enough space to tumble and turn over, thereby maintaining the direction during the laying and releasing process on the receiving platform.

[0070] In an exemplary scheme, the bottom of the trough space is provided with a slide, the inner tube at the bottom of the trough space is first dropped onto the slide, and then pushed out by the pushing mechanism, and the pushing mechanism further transfers the inner tube on the slide to the combined fireworks.

[0071] The embodiments of the present application also provide a production line of combined fireworks, comprising the inner tube filling device.

[0072] It should be understood that the production line of combined fireworks comprises a plurality of fireworks production steps, such as the filling of military gunpowder, the filling of paper sheets, the filling of inner tubes, and a plurality of detection steps, which involve a plurality of devices. The improvement of the present application to the fireworks production line is the filling of the inner tube, in particular the improvement of the hopper assembly, and the specific improvement scheme can be referred to the description in the previous part, which will not be repeated here.

[0073] The first driving unit, the second driving unit, the third driving unit and the fourth driving unit can be provided as various types of driving devices, such as electric devices, electric devices, such as air cylinders, electric cylinders, motors, etc.

[0074] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0075] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. It should be noted that the terms used herein are only for the purpose of 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 intended to include the plural form, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, work, device, component and / or their combination.

[0076] The specific embodiments described herein are merely illustrative of the technical solutions of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways without departing from the scope defined by the claims of the present application.

Claims

1. A hopper assembly characterized by, The application relates to a material receiving device, which comprises a hopper structure, a material frame mechanism and a material receiving mechanism. The hopper structure is provided with a hopper space and a material dropping port at the bottom of the hopper space. The material frame mechanism comprises an upper blocking edge, a first side blocking edge, a second side blocking edge and a first group of driving units. The first side blocking edge and the second side blocking edge are arranged on the opposite sides of the upper blocking edge. The first group of driving units is used for driving the upper blocking edge, the first side blocking edge and the second side blocking edge to move. The material receiving mechanism comprises a material receiving platform and a second group of driving units.

2. The hopper assembly of claim 1, wherein, The material receiving platform is arranged below the first side blocking edge and the second side blocking edge. When the material frame mechanism is in an initial state and the material receiving platform is in an initial position, the upper blocking edge, the first side blocking edge, the second side blocking edge and the material receiving platform form a temporary material frame for receiving an inner cylinder. When the first side blocking edge and the second side blocking edge are opened to the two sides respectively, the inner cylinder in the temporary material frame is released on the material receiving platform, and the upper blocking edge moves downwards along with the inner cylinder in the temporary material frame. Under the driving of the second group of driving units, the material receiving platform can sequentially stack the inner cylinder on the material receiving platform onto the bottom of the hopper space.

3. The hopper assembly of claim 2, wherein, The first group of driving units comprises a first driving unit and a second driving unit.

4. The hopper assembly of any one of claims 1-3, wherein, The first driving unit is arranged between the hopper structure and the upper blocking edge and can drive the upper blocking edge to move up and down relative to the hopper structure.

5. The hopper assembly of any one of claims 1-3, wherein, The second driving unit can drive the first side blocking edge and the second side blocking edge to rotate relative to the upper blocking edge. During the process that the inner cylinder in the temporary material frame is released on the material receiving platform, the second driving unit drives the first side blocking edge and the second side blocking edge to be opened to the two sides respectively, and the first driving unit drives the upper blocking edge to move downwards so that the upper blocking edge keeps in contact with the inner cylinder.

6. The hopper assembly of claim 1, wherein, A second driving unit is arranged above the first side blocking edge and the second side blocking edge respectively, and the second driving units on the two sides are synchronously driven to drive the first side blocking edge and the second side blocking edge to symmetrically rotate. The first side blocking edge and the second side blocking edge are movably connected with the upper blocking edge, so that the first side blocking edge, the second side blocking edge and the upper blocking edge form a movable frame with an open bottom. The first side blocking edge and the second side blocking edge are movably connected with the hopper structure. The upper blocking edge is a telescopic mechanism and can be horizontally telescoped. When the first side blocking edge and the second side blocking edge are opened to the two sides respectively, the upper blocking edge moves downwards and is horizontally telescoped to keep the two ends of the upper blocking edge in contact with the first side blocking edge and the second side blocking edge respectively. The material receiving mechanism further comprises a lifting support, and the second group of driving units comprises a third driving unit and a fourth driving unit. The third driving unit is arranged between the hopper structure and the lifting support and is used for driving the lifting support to move up and down relative to the hopper structure. The fourth driving unit is arranged between the lifting support and the material receiving platform and is used for driving the material receiving platform to move horizontally relative to the lifting support. The third driving unit is arranged between the hopper structure and the lifting support and is used for driving the lifting support to move up and down relative to the hopper structure. The fourth driving unit is arranged between the lifting support and the material receiving platform and is used for driving the material receiving platform to move horizontally relative to the lifting support. When the inner cylinder is stacked downward, the third driving unit drives the lifting support to move from the initial position to the stacking height of the lower inner cylinder, at which the lifting support blocks the inner cylinder on the receiving platform to separate the inner cylinder from the receiving platform to fall onto the lower stacked inner cylinder, as the fourth driving unit drives the receiving platform to exit the inner cylinder stacking area.

7. The hopper assembly of claim 6, wherein, The hopper structure is provided with a guide rod on each side of the chute space, which is in sliding fit with the lifting support to guide the lifting support to lift and lower.

8. The hopper assembly of claim 6, wherein, The lifting support is provided with a long slot extending transversely, and the receiving platform is in fit with the long slot and is loaded into the long slot, and the lifting support is formed with a blocking part above the long slot to block the inner cylinder on the receiving platform when the receiving platform exits the inner cylinder stacking area.

9. The hopper assembly of claim 1, wherein, The temporary hopper is hexagonal, which is in fit with the shape of the hexagonal inner cylinder cake. The upper blocking edge constitutes the upper edge of the temporary hopper, the receiving platform constitutes the lower edge of the temporary hopper, the first side blocking edge constitutes the left two edges of the temporary hopper, and the second side blocking edge constitutes the right two edges of the temporary hopper.

10. The hopper assembly of claim 1, wherein, The hopper structure comprises a back plate, and the back plate is fixed with two oppositely arranged vertical blocking edges, and the chute space is formed between the two vertical blocking edges.

11. An inner tube filling apparatus for a combination firework, characterized by comprising: The inner cylinder filling equipment comprises the hopper assembly.

12. A production line for a combination firework, characterized in that, The inner cylinder filling equipment comprises the hopper assembly.

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