A fireworks assembly line

Abstract

This utility model relates to a fireworks assembly line comprising: a conveyor bus, and sequentially arranged on the conveyor bus are a firing gunpowder filling unit, a bottom paper pressing unit, an inner cylinder filling unit, and a top paper pressing unit; wherein, the inner cylinder filling unit includes a first working unit and a second working unit, the first working unit and the second working unit being separated by a first explosion-proof wall; the first working unit is used to feed the inner cylinder into the second working unit through a feeding port on the first explosion-proof wall; the second working unit is used for filling the inner cylinder. This application provides an assembly line that effectively isolates the feeding process from the filling process during the inner cylinder filling process, and improves the safety and automation level of the filling process.

Description

Technical Field

[0001] This utility model belongs to the technical field of fireworks production lines, and in particular relates to a fireworks assembly line. Background Technology

[0002] Currently, fireworks production lines typically include the feeding and filling processes for the inner cylinder, used to combine prefabricated inner cylinders with the outer cylinder and other components to form the finished fireworks. However, existing inner cylinder filling methods often involve manually feeding the inner cylinder cakes one by one into the filling station, or using only simple conveyor devices for feeding. This still requires operators to move back and forth between the feeding and filling areas to pick up, place, push, or adjust the positions, resulting in excessive manual intervention, cumbersome operations, and operators being in high-risk work areas for extended periods. Furthermore, the dust and filling agents generated during inner cylinder filling are flammable and explosive. If operators remain near the filling area for extended periods, there are safety hazards, making it difficult to meet the requirements of safe, automated, and continuous production. In addition, existing inner cylinder feeding and filling processes often occur in the same area; in the event of an abnormal combustion or explosion, personnel would be directly affected by the explosion, posing a significant safety risk.

[0003] For example, Chinese patent application No. 202410456871.8 discloses a fireworks production line, specifically disclosing "a primer filling device for filling primers into the fireworks body; a fireworks paper filling device capable of filling fireworks bodies conveyed to its first and second sides with paper; an inner cylinder filling device for filling the fireworks body with an inner cylinder; a first conveyor line arranged between the primer filling device and the fireworks paper filling device for conveying the fireworks body to the first side of the fireworks paper filling device after the primer filling device has filled; a second conveyor line arranged between the fireworks paper filling device and the inner cylinder filling device for conveying the fireworks body to the inner cylinder filling device after the fireworks paper filling device has filled; and a third conveyor line arranged between the inner cylinder filling device and the fireworks paper filling device." The technical solution described in this patent application does not separate the feeding and filling of the inner cylinder, posing a significant safety risk.

[0004] Therefore, how to provide a production line that effectively isolates the feeding process from the filling process during the inner cylinder filling process, and improves the safety and automation level of the filling process, is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] To solve at least one of the above-mentioned technical problems, this utility model provides a fireworks assembly line, comprising: a conveyor bus, and a firing gunpowder filling unit, a bottom paper pressing unit, an inner cylinder filling unit, and a top paper pressing unit sequentially arranged on the conveyor bus;

[0006] The inner cylinder filling unit includes a first working unit and a second working unit, which are separated by a first explosion-proof wall.

[0007] The first working unit is used to feed the inner cylinder into the second working unit through the feeding port on the first explosion-proof wall;

[0008] The second working unit is used for filling the inner cylinder.

[0009] Furthermore, the first explosion-proof wall is "H" shaped, including: transverse walls and side walls;

[0010] The transverse wall is positioned between the side walls and has a feed port corresponding to the second working unit.

[0011] The side walls extend vertically along the transverse walls and combine with the transverse walls to form a "U"-shaped space located below the transverse walls and a "U"-shaped space located above the transverse walls.

[0012] The first working unit is located in the U-shaped space below the horizontal wall, and the second working unit is located in the U-shaped space above the horizontal wall.

[0013] Furthermore, the fireworks assembly line also includes:

[0014] Furthermore, the fireworks assembly line also includes: a second explosion-proof wall, a third explosion-proof wall, and a fourth explosion-proof wall;

[0015] The second explosion-proof wall is set up around the second firing nitrate loading unit;

[0016] The third explosion-proof wall, together with the first and second explosion-proof walls, is set up around the bottom paper unit;

[0017] The fourth explosion-proof wall and the first explosion-proof wall are together enclosed around the paper pressing unit;

[0018] The first, second, third, and fourth explosion-proof walls work together to form a "U"-shaped explosion-proof surface on the side of the inner cylinder filling unit, the nitrate-emitting filling unit, the bottom paper pressing unit, and the top paper pressing unit near the transmission bus.

[0019] Furthermore, the fireworks assembly line also includes: a palletizing conveyor line and palletizing units;

[0020] The first end of the palletizing conveyor line is connected to the material outlet of the conveyor bus, and the second end is connected to the palletizing unit.

[0021] The palletizing unit is used to palletize finished fireworks.

[0022] Furthermore, the flower assembly line also includes: a first vision inspection device, a second vision inspection device, and a third vision inspection device;

[0023] The first visual inspection device is located between the nitric acid filling unit and the bottom paper pressing unit;

[0024] The second visual inspection device is installed between the bottom paper pressing unit and the inner cylinder filling unit;

[0025] The third visual inspection device is located behind the paper pressing unit;

[0026] The first visual inspection device, the second visual inspection device, and the third visual inspection device all include: a visual inspection component and a separation conveyor line;

[0027] The separation conveyor line separates defective products based on the visual inspection results.

[0028] Furthermore, the second working unit includes: an inner cylinder material handling device, a conveying device and a pushing device, a tilting and bearing device and a pressing device;

[0029] The inner cylinder material handling device is connected to the feeding end of the inner cylinder filling unit and is used to push out the layered stacked inner cylinder raw materials layer by layer.

[0030] The flipping material receiving device is installed on one side of the conveying device and is provided with material receiving cavities at intervals corresponding to the outer tubes of fireworks on the conveying bus.

[0031] The material pushing device is located on the other side of the conveying device and is provided with retractable material pushing plates at intervals corresponding to the material receiving cavity;

[0032] The pressing device is located above the tilting and receiving device, and is provided with retractable pressing rods at intervals corresponding to the receiving cavity.

[0033] Furthermore, the inner cylinder feeding device includes: a first clamp, a lifting assembly, and a pushing assembly;

[0034] The first clamp is provided with a first feeding chamber for accommodating the inner tube cake of the fireworks, and the first clamp is vertically and vertically mounted on the lifting assembly;

[0035] The pushing component is disposed on one side of the first clamp, including a first pushing member disposed at the upper end;

[0036] The first pusher component includes a telescopic driver and a pusher plate;

[0037] The push plate is located at the telescopic end of the telescopic driver. The push plate works in conjunction with the lifting assembly to push out the layered fireworks inner tube cakes stacked in the first feeding chamber layer by layer in the horizontal direction.

[0038] Furthermore, the lateral width of the push plate is greater than the maximum lateral width of the first feeding chamber;

[0039] On both sides of the first feeding chamber, from bottom to top, there are push slots that are adapted to the push plate.

[0040] The vertical width of the push slot is smaller than the diameter of the inner cylinder, and the spacing between adjacent push slots is equal to the diameter of the inner cylinder.

[0041] Furthermore, the second working unit also includes: a second clamp and a first conveying assembly;

[0042] The second clamp is movably mounted on the first conveying assembly and is provided with a second feeding chamber corresponding to the first feeding chamber. The second clamp is used to convey the inner tube cake of the fireworks.

[0043] The first conveying assembly includes a first conveyor line for conveying the second fixture from the feeding end to the first fixture;

[0044] The pushing component also includes a second pushing member disposed below the first pushing member; the telescopic part of the second pushing member corresponds to the second feeding chamber and is used to push the fireworks inner tube cake of the second feeding chamber into the first feeding chamber.

[0045] Furthermore, explosion-proof clamps are installed on both sides of the first conveyor line;

[0046] The feed end of the first conveyor line is connected to the feed port on the first explosion-proof wall.

[0047] This embodiment provides a fireworks assembly line. In use, the outer tube of the fireworks is movably mounted on a conveyor bus, and the outer tube undergoes sequential processes of firing gunpowder filling, bottom paper pressing, inner tube filling, and top paper pressing. The inner tube filling unit includes a first working unit and a second working unit separated by a first explosion-proof wall. The first working unit feeds the inner tube into the second working unit through a feeding port on the first explosion-proof wall. The second working unit fills the inner tube, effectively separating the inner tube feeding process from the inner tube filling process in space, achieving separation of the feeding area and the filling area. For example, the feeding in the first working unit is done by a robotic arm or other mechanical conveyor, or manually. Taking manual feeding as an example, the operator feeds the inner tube into the second working unit through the feeding port at the first working unit, greatly reducing the operator's time spent in the high-risk filling area, effectively reducing the safety threats to operators from dust, sparks, and accidental explosions during the filling process, and improving the safety of the filling process. Meanwhile, after being isolated by the first explosion-proof wall, in the event of an abnormal explosion during the filling process, the shock wave and high-temperature flame can be effectively blocked from spreading to the first working unit and the personnel area, further ensuring operational safety. Furthermore, separating the feeding process from the filling process allows different mechanisms to independently optimize their work rhythm, avoiding the impact of the filling process's rhythm on the continuity of the feeding process, and achieving efficient and stable automated fireworks inner tube filling operations. In summary, this application provides a fireworks assembly production line that effectively isolates the feeding process from the filling process during the inner tube filling process, thereby improving the safety and automation level of the filling process. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort. In the drawings, the same parts use the same reference numerals. The drawings are not drawn to scale.

[0049] Figure 1 This is a schematic diagram of one embodiment of a fireworks assembly line according to the present invention;

[0050] Figure 2 This is a schematic diagram of an embodiment of the inner cylinder filling unit of a fireworks assembly production line according to the present invention;

[0051] Figure 3 This is a schematic diagram of another embodiment of a fireworks assembly line according to the present invention;

[0052] Figure 4This is a schematic diagram of an embodiment of the second working unit of a fireworks assembly line according to the present invention.

[0053] Figure 5 This is a schematic diagram of one embodiment of a material pushing device for a fireworks assembly line according to the present invention;

[0054] Figure 6 This is a schematic diagram of an embodiment of a flipping and pressing device and a fireworks assembly line according to the present invention.

[0055] Figure 7 This is a schematic diagram of an embodiment of the inner cylinder material handling device of a fireworks assembly production line according to the present invention;

[0056] Figure 8 This is a schematic diagram of an embodiment of the first fixture in a fireworks assembly production line according to the present invention.

[0057] Figure 9 This is a schematic diagram of one embodiment of a pusher component in a fireworks assembly line according to the present invention;

[0058] Figure 10 This is a partial structural schematic diagram of an embodiment of the second working unit of a fireworks assembly line according to the present invention.

[0059] Figure 11 This is a schematic diagram of another embodiment of the inner cylinder material handling device of the fireworks assembly production line of this utility model. Detailed Implementation

[0060] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0061] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0062] It should also be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. Furthermore, if the embodiments of this utility model involve descriptions such as "first," "second," "S1," "S2," "step one," "step two," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance, or implicitly indicating the number of technical features indicated or the execution order of the method. Those skilled in the art will understand that anything that does not violate the essential points of the utility model within the scope of its inventive concept should be included within the protection scope of this utility model.

[0063] This utility model provides a fireworks assembly line, referenced Figure 1 and Figure 2 It includes: a transmission bus 1, and a firing nitric acid filling unit 2, a bottom paper pressing unit 3, an inner cylinder filling unit 4, and a top paper pressing unit 5 arranged sequentially on the transmission bus;

[0064] The inner cylinder filling unit 4 includes a first working unit 4a and a second working unit 4b, which are separated by a first explosion-proof wall 1c.

[0065] The first working unit 4a is used to feed the inner cylinder into the second working unit 4b through the feeding port 4d on the first explosion-proof wall 1c;

[0066] The second working unit 4b is used for filling the inner cylinder.

[0067] This embodiment provides a fireworks assembly line. In use, the outer tube of the fireworks is movably mounted on a conveyor bus, and the outer tube undergoes sequential processes of firing gunpowder filling, bottom paper pressing, inner tube filling, and top paper pressing. The inner tube filling unit includes a first working unit and a second working unit separated by a first explosion-proof wall. The first working unit feeds the inner tube into the second working unit through a feeding port on the first explosion-proof wall. The second working unit fills the inner tube, effectively separating the inner tube feeding process from the inner tube filling process in space, achieving separation of the feeding area and the filling area. For example, the feeding in the first working unit is done by a robotic arm or other mechanical conveyor, or manually. Taking manual feeding as an example, the operator feeds the inner tube into the second working unit through the feeding port at the first working unit, greatly reducing the operator's time spent in the high-risk filling area, effectively reducing the safety threats to operators from dust, sparks, and accidental explosions during the filling process, and improving the safety of the filling process. Meanwhile, after being isolated by the first explosion-proof wall, in the event of an abnormal explosion during the filling process, the shock wave and high-temperature flames can be effectively blocked from spreading to the first working unit and the personnel area, further ensuring operational safety. Furthermore, separating the feeding and filling processes allows different mechanisms to independently optimize their work rhythm, avoiding the impact of the filling process's rhythm on the continuity of the feeding process, and achieving efficient and stable automated fireworks inner tube filling operations. (Example, see reference) Figure 2 The parallel arrangement of multiple first working units 4a, the feeding ports 4d of the first explosion-proof wall 1c, and the second working unit 4b enables simultaneous filling of multiple inner cylinders, improving filling efficiency. Specifically, there are five first working units 4a, five feeding ports 4d of the first explosion-proof wall 1c, and five second working units 4b arranged in parallel. In summary, this application provides a fireworks assembly production line that effectively isolates the feeding process from the filling process during the inner cylinder filling process, and improves the safety and automation level of the filling process.

[0068] Preferred, Reference Figure 1 and Figure 2 The first explosion-proof wall 1c is "H" shaped and includes: a horizontal wall 11c and a side wall 12c;

[0069] The transverse wall 11c is located between the side walls 12c and is provided with a feeding port 4d corresponding to the second working unit 4b;

[0070] The side wall 12c extends vertically along the transverse wall and combines with the transverse wall 11c to form a "U"-shaped space below the transverse wall 11c and a "U"-shaped space above the transverse wall 11c.

[0071] The first working unit 4a is located in the U-shaped space below the transverse wall 11c, and the second working unit 4b is located in the U-shaped space above the transverse wall 11c.

[0072] In this embodiment, a transverse wall is positioned between the side walls, and a feeding port corresponding to the second working unit is provided on the transverse wall. This facilitates precise docking when the first working unit delivers the inner cylinder to the second working unit, ensuring the continuity and accuracy of the feeding process, while preventing material from falling or getting stuck, and improving feeding stability. Simultaneously, the side walls extend vertically along the transverse walls and combine with them to form a U-shaped space below the transverse walls and a U-shaped space above the transverse walls. The first working unit is located in the U-shaped space below the transverse walls, and the second working unit is located in the U-shaped space above the transverse walls. When sparks, high-temperature gas flows, or abnormal explosions occur during the filling process of the second working unit, they can be released towards the U-shaped opening above the transverse walls, preventing direct impact on the area where the first working unit is located. This limits the range of shock waves, flame spread, and dust dispersion in the event of an anomaly, improving explosion-proof and protective effects, and effectively protecting the area where the first working unit is located.

[0073] More preferably, refer to Figure 2 and Figure 3 An explosion-proof door 1d is installed on the side wall 12c above the transverse wall 11c. The explosion-proof door 1d is initially opened for initial equipment installation; it is normally closed to isolate the second working unit 4b from the outside.

[0074] Preferred, Reference Figure 1-3 The fireworks assembly line also includes: the second explosion-proof wall 2c, the third explosion-proof wall 3c and the fourth explosion-proof wall 4c;

[0075] Among them, the second explosion-proof wall 2c is set up around the second firing nitrate loading unit 2;

[0076] The third explosion-proof wall 3c, together with the first explosion-proof wall 1c and the second explosion-proof wall 2c, are arranged around the bottom paper unit 3;

[0077] The fourth explosion-proof wall 4c and the first explosion-proof wall 1c are together enclosed around the pressing paper unit 5;

[0078] The first explosion-proof wall 1c, the second explosion-proof wall 2c, the third explosion-proof wall 3c and the fourth explosion-proof wall 4c cooperate with each other to form a "U"-shaped explosion relief surface on the side of the inner cylinder filling unit 4, the firing nitrate filling unit 2, the bottom paper pressing unit 3 and the top paper pressing unit 5 near the transmission bus 1.

[0079] In this embodiment, the fireworks assembly line is equipped with a second, third, and fourth explosion-proof wall to isolate units prone to hazardous reactions, such as the pyrotechnic filling unit, the bottom paper pressing unit, and the top paper pressing unit. This effectively limits the explosion propagation range and improves the overall safety level of the production line. Furthermore, the first, second, third, and fourth explosion-proof walls work together to create a U-shaped venting surface near the main transmission line. This effectively guides the high-temperature gas and shock wave generated by the explosion in a predetermined direction, preventing disorderly venting from causing injury to personnel or equipment. More importantly, the explosion-proof walls work together to form a standardized U-shaped structure, facilitating modular layout of the process line and simplifying subsequent adjustments, expansions, and maintenance.

[0080] More preferably, refer to Figure 3 Production channels 6 are provided on the first explosion-proof wall 1c, the second explosion-proof wall 2c, the third explosion-proof wall 3c and the fourth explosion-proof wall 4c, so that operators and equipment can carry out necessary material handling, maintenance and inspection between units, ensuring production continuity and flexible scheduling.

[0081] More preferably, refer to Figure 3 The fireworks assembly line also includes: a palletizing conveyor line 71 and a palletizing unit 72;

[0082] The first end of the palletizing conveyor line 71 is connected to the discharge end of the conveyor bus 1, and the second end is connected to the palletizing unit 72.

[0083] The palletizing unit 72 is used to palletize finished fireworks.

[0084] In this embodiment, by adding a palletizing conveyor line and palletizing units to the fireworks assembly line, the automated conveying and palletizing of finished fireworks from the end of the assembly line is achieved, improving the automation level and overall operational efficiency of the production line. The palletizing conveyor line can effectively connect to the discharge end of the conveyor bus, realizing the orderly transmission of finished products and avoiding the chaos and damage caused by manual handling; the palletizing unit can accurately palletize finished products according to the set stacking rules, ensuring stable and aesthetically pleasing stacking, facilitating subsequent packaging, transportation, and storage. Meanwhile...

[0085] Preferred, fireworks assembly line, reference Figure 3 It also includes: a first visual detection device 5, a second visual detection device 9 and a third visual detection device 10;

[0086] The first visual inspection device 8 is located between the nitric acid filling unit 2 and the bottom paper pressing unit 3;

[0087] The second visual inspection device 9 is located between the bottom paper pressing unit 3 and the inner cylinder filling unit 4;

[0088] The third visual inspection device 10 is located behind the paper pressing unit 5;

[0089] The first visual inspection device 8, the second visual inspection device 9, and the third visual inspection device 10 each include: a visual inspection component and a separation conveyor line;

[0090] The separation conveyor line separates defective products based on the visual inspection results.

[0091] In this embodiment, first, second, and third visual inspection devices are installed on the fireworks assembly line, located between the launching gunpowder filling unit and the bottom paper pressing unit, between the bottom paper pressing unit and the inner cylinder filling unit, and behind the top paper pressing unit, respectively. These devices enable real-time inspection after key processes in the production flow, promptly identifying filling, pressing, or assembly defects to ensure product quality. Each visual inspection device includes a visual inspection component and a separation conveyor line. The visual inspection component can inspect the appearance, size, position, and integrity of the fireworks. The separation conveyor line automatically rejects defective products based on the inspection results, preventing them from flowing into subsequent processes and reducing rework and safety hazards. It is worth noting that the key aspect of this application is providing a fireworks assembly line that achieves integrated automated installation of fireworks assembly from a mechanical structure perspective, enabling safe production. Specific visual inspection methods, visual control processes, and visual inspection techniques can all be implemented using programmable logic devices such as PLCs or existing technologies, and will not be elaborated upon here.

[0092] Preferred, Reference Figure 4-6 The second working unit 4b includes: an inner cylinder material handling device 41, a conveying device 42, a pushing device 43, a tilting and supporting device 44, and a pressing device 45;

[0093] The inner cylinder material handling device 41 is connected to the feeding end of the inner cylinder filling unit 4 and is used to push out the layered stacked inner cylinder raw materials layer by layer.

[0094] The flipping material receiving device 42 is flipped and is set on one side of the conveying device 42, and is provided with material receiving cavities 4311 at intervals corresponding to the outer tube of the fireworks on the conveying bus 1.

[0095] The pushing device 43 is located on the other side of the conveying device 42, and is provided with retractable pushing plates 441 corresponding to the receiving cavity 4311 at intervals.

[0096] The pressing device 45 is located above the flipping and receiving device 42, and is provided with telescopic pressing rods 451 corresponding to the receiving cavity 4311 at intervals.

[0097] In this embodiment, the inner cylinder feeding device precisely pushes out the inner cylinder material layer by layer, forming a single row of inner cylinder material, ensuring continuous and stable feeding. The first end of the conveying device receives the pushed-out single row of inner cylinders and smoothly transports the inner cylinders between the flipping and receiving device and the pushing device. The flipping and receiving device is provided with receiving cavities corresponding to the outer cylinders of the fireworks at intervals, and is initially in a first state (e.g., horizontal state). The pushing device is arranged opposite to the flipping and receiving device, and accurately pushes the inner cylinders into the receiving cavities using retractable pushing plates at intervals, and then retracts. The flipping and receiving device flips to a second state (e.g., vertical state), and the pressing device is arranged above the flipping and receiving device. Using retractable pressing rods corresponding to the receiving cavities, the inner cylinders are pressed into the corresponding spaced-apart outer cylinders of the fireworks. This cycle is repeated to complete the automated installation of the inner cylinders in the outer cylinders of the fireworks. Through the cooperation of the various devices in the first unit, the automatic feeding, conveying, precise pushing, flipping and positioning, and compaction filling of the inner cylinders can be effectively realized, avoiding manual contact with flammable and explosive materials, reducing safety risks, and improving automation and cycle matching capabilities.

[0098] Preferred, Reference Figure 6 Preferred, Reference Figure 4 and Figure 6 The flipping and supporting device 43 includes: a flipping clamp 431, a rotating rod 432, and a telescopic component 433;

[0099] The flipping clamp 431 is rotatably mounted above the outer tube of the fireworks, and in the vertical direction, there are sliding material cavities 4311 corresponding to the outer tube of the fireworks at intervals;

[0100] One end 432 of the rotating rod is fixedly connected to the flipping clamp 431, and the other end is hinged to the telescopic end of the telescopic component 433.

[0101] In this embodiment, the flipping clamp is rotatably mounted above the third clamp and has a material-bearing cavity corresponding to the outer tube of the fireworks for supporting the inner tube. One end of the rotating rod is fixedly connected to the flipping clamp, and the other end is hinged through the telescopic end of the telescopic member. The telescopic member, through the telescopic action of its telescopic end, causes the rotating rod to drive the flipping clamp to rotate, thus adjusting the angle of the flipping clamp. This allows the fourth clamp and the supported inner tube to reciprocate from a first state (e.g., horizontal state) to a second state (e.g., vertical state). During this process, the flipping clamp continuously receives the inner tube material pushed by the pushing device; then, through the coordinated control of the rotating rod and the telescopic member, the inner tube's posture is smoothly flipped from horizontal to vertical; and with the help of the pressing device, the inner tube is installed in the outer tube of the fireworks, achieving stable support and automatic flipping of the inner tube, greatly improving the filling accuracy, reliability, and automation level.

[0102] Preferred, Reference Figure 7 The inner cylinder material handling device 41 includes: a first clamp 411, a lifting component 412 and a pushing component 413;

[0103] The first clamp 411 is provided with a first feeding chamber 4111 for accommodating the inner tube of the fireworks, and the first clamp 411 is vertically and vertically mounted on the lifting assembly 412;

[0104] The pushing component 413 is disposed on one side of the first clamp 411, including the first pushing member 4131 disposed at the upper end;

[0105] The first pusher 4131 includes a telescopic driver 4131a and a pusher plate 4131b;

[0106] The push plate 4131b is located at the telescopic end of the telescopic driver 4131a. The push plate 4131b cooperates with the lifting assembly 412 to push out the layered fireworks inner tube cakes stacked in the first feeding chamber 4111 layer by layer in the horizontal direction.

[0107] In this embodiment, the second working unit addresses the technical problems in existing fireworks production processes. When fireworks inner tube cakes are stored and fed in a layered stack, manual material handling or a combination of vertical dropping and mechanical vibration handling is required, resulting in low handling accuracy, safety risks, and low efficiency. Specifically, the fireworks inner tube cakes are placed in the first feeding chamber without altering their original shape, in a layered stack. First, the lifting assembly drives the first clamp to rise and fall, aligning the top inner tube with the pusher plate's ejection height. The telescopic driver of the first pusher (such as a cylinder, screw motor, or other telescopic driver) drives the pusher plate to move horizontally, smoothly ejecting the top inner tube along the ejection direction. Subsequently, the lifting assembly controls the first clamp to descend one inner tube height, aligning the next inner tube with the pusher plate. The pusher assembly continues the ejection action, repeating the above process to sequentially complete the layered, translational, precise, efficient, and stable ejection of the inner tube material, achieving continuous material handling. This device transforms the original layered stacked raw materials into a continuous single row of neatly arranged, accurately positioned, and uniformly oriented inner cylinders through a combination of lifting and horizontal pushing actions. This second working unit avoids the problems of inner cylinder tipping, scattering, and blockage caused by the disintegration of the raw material cake and the need for re-sorting, thus ensuring the integrity of the inner cylinder and the stability of the material supply during the production process.

[0108] Preferred, Reference Figure 8 and Figure 10 The lateral width of the push plate 4131b is greater than the maximum lateral width of the first feeding chamber 4111;

[0109] On both sides of the first feeding chamber 4111, push grooves 41112 adapted to the push plate 4131b are arranged sequentially from bottom to top.

[0110] The vertical width of the push groove 4112 is smaller than the diameter of the inner cylinder, and the spacing between adjacent push grooves 4112 is equal to the diameter of the inner cylinder.

[0111] In this embodiment, the lateral width of the pusher plate is greater than the maximum width of the first feeding chamber. It works in conjunction with the pusher slots that are spaced apart from bottom to top to ensure that the pusher plate can fully cover, uniformly and push out the stacked inner cylinders layer by layer from top to bottom. At the same time, the vertical width of the pusher slots is less than the diameter of the inner cylinder, and the slot spacing is equal to the diameter of the inner cylinder. This can effectively limit and guide the inner cylinders, prevent them from tilting, misaligning or missing pushes, and realize the layer-by-layer, accurate and stable push out of the inner cylinders, thereby improving the continuity, reliability and safety of material handling.

[0112] Preferred, Reference Figure 7-10 The second working unit 4b also includes: a second clamp 414 and a first conveying assembly 415;

[0113] The second clamp 414 is movably disposed on the first conveying assembly 415 and is provided with a second feeding chamber 4141 corresponding to the first feeding chamber 4111. The second clamp 414 is used to convey the inner tube cake of the fireworks.

[0114] The first conveying assembly 415 includes a first conveyor line 4151 for conveying the second clamp 414 from the feeding end to the first clamp 411.

[0115] The pushing component 413 also includes a second pushing component 4132 disposed below the first pushing component 4131; the telescopic part 4132a of the second pushing component 4132 corresponds to the second feeding chamber 4141 and is used to push the fireworks inner tube cake of the second feeding chamber 4141 into the first feeding chamber 4111.

[0116] In this embodiment, the second feeding chamber of the second clamp is used to receive the layered stacked fireworks inner tube cakes from the feeding end of the first conveying component. Combined with the first conveying component, the second clamp is transported from the feeding end to the first clamp, achieving efficient transfer and continuous supply of the inner tube material. The second pushing member in the pushing component is located below the first pushing member, and its telescopic part corresponds to the second feeding chamber, with a perfectly matched configuration. This allows for precise pushing of the inner tube material from the second feeding chamber to the first feeding chamber, ensuring smooth connection of the inner tube material between different clamps and greatly improving the automation level of material handling. Because the second clamp and the first conveying component move automatically, and the pushing, lifting, and material handling processes of the inner tube are far from the feeding end, the risk of injury to operators from inner tube explosions in extreme cases can be greatly reduced.

[0117] Preferred, Reference Figure 1 , Figure 2 and Figure 11 Explosion-proof clamps 4152 are provided on both sides of the first conveyor line 4151;

[0118] The feed end of the first conveyor line 4151 is connected to the feed port 4d on the first explosion-proof wall 1c.

[0119] In this embodiment, by setting explosion-proof clamps on both sides of the first conveyor line, the inner cylinder of the fireworks in the second clamp can be laterally limited and protected during the conveying and feeding process, preventing the inner cylinder from tilting and scattering or causing an explosion risk due to sparks generated by friction and collision. The feeding end of the first conveyor line corresponds to the feeding port set on the first explosion-proof wall, forming a closed and safe feeding channel, effectively isolating the external environment and preventing the accidental combustion and explosion of gunpowder raw materials caused by external fire sources or static electricity. At the same time, it can limit the explosion impact range in case of abnormality, reduce the impact on surrounding equipment and personnel, and significantly improve the safety and protection capabilities of the inner cylinder feeding and fireworks production process.

[0120] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A fireworks assembly line, characterized in that, Includes: a conveyor bus, and a firing nitric acid filling unit, a bottom paper pressing unit, an inner cylinder filling unit, and a top paper pressing unit arranged sequentially on the conveyor bus; The inner cylinder filling unit includes a first working unit and a second working unit, which are separated by a first explosion-proof wall. The first working unit is used to feed the inner cylinder into the second working unit through the feeding port on the first explosion-proof wall; The second working unit is used for filling the inner cylinder.

2. The fireworks assembly line according to claim 1, characterized in that... The first explosion-proof wall is "H" shaped and includes: horizontal walls and side walls; The transverse wall is positioned between the side walls and has a feed port corresponding to the second working unit. The side walls extend vertically along the transverse walls and combine with the transverse walls to form a "U"-shaped space below the transverse walls and a "U"-shaped space above the transverse walls. The first working unit is located in the U-shaped space below the horizontal wall, and the second working unit is located in the U-shaped space above the horizontal wall.

3. The fireworks assembly line according to claim 2, characterized in that, Also includes: Second blast-proof wall, third blast-proof wall and fourth blast-proof wall; The second explosion-proof wall is set up around the second firing nitrate loading unit; The third explosion-proof wall, together with the first and second explosion-proof walls, is set up around the bottom paper unit; The fourth explosion-proof wall and the first explosion-proof wall are together enclosed around the paper pressing unit; The first, second, third, and fourth explosion-proof walls work together to form a "U"-shaped explosion-proof surface on the side of the inner cylinder filling unit, the nitrate-emitting filling unit, the bottom paper pressing unit, and the top paper pressing unit near the transmission bus.

4. The fireworks assembly line according to claim 2, characterized in that, Also includes: Palletizing conveyor lines and palletizing units; The first end of the palletizing conveyor line is connected to the material outlet of the conveyor bus, and the second end is connected to the palletizing unit. The palletizing unit is used to palletize finished fireworks.

5. The fireworks assembly line according to claim 1, characterized in that, Also includes: First visual inspection device, second visual inspection device and third visual inspection device; The first visual inspection device is located between the nitric acid filling unit and the bottom paper pressing unit; The second visual inspection device is installed between the bottom paper pressing unit and the inner cylinder filling unit; The third visual inspection device is located behind the paper pressing unit; The first visual inspection device, the second visual inspection device, and the third visual inspection device all include: a visual inspection component and a separation conveyor line; The separation conveyor line separates defective products based on the visual inspection results.

6. The fireworks assembly line according to any one of claims 1-5, characterized in that, The second working unit includes: an inner cylinder material handling device, a conveying device and a pushing device, a tilting and supporting device and a pressing device; The inner cylinder material handling device is connected to the feeding end of the inner cylinder filling unit and is used to push out the layered stacked inner cylinder raw materials layer by layer. The flipping material receiving device is installed on one side of the conveying device and is provided with material receiving cavities at intervals corresponding to the outer tubes of fireworks on the conveying bus. The material pushing device is located on the other side of the conveying device and is provided with retractable material pushing plates at intervals corresponding to the material receiving cavity; The pressing device is located above the tilting and receiving device, and is provided with retractable pressing rods at intervals corresponding to the receiving cavity.

7. The fireworks assembly line according to claim 6, characterized in that, The inner cylinder material handling device includes: a first clamp, a lifting component, and a pushing component; The first clamp is provided with a first feeding chamber for accommodating the inner tube cake of the fireworks, and the first clamp is vertically and vertically mounted on the lifting assembly; The pushing component is disposed on one side of the first clamp, including a first pushing member disposed at the upper end; The first pusher component includes a telescopic driver and a pusher plate; The push plate is located at the telescopic end of the telescopic driver. The push plate works in conjunction with the lifting assembly to push out the layered fireworks inner tube cakes stacked in the first feeding chamber layer by layer in the horizontal direction.

8. The fireworks assembly line according to claim 7, characterized in that, The lateral width of the push plate is greater than the maximum lateral width of the first feeding chamber; On both sides of the first feeding chamber, from bottom to top, there are push slots that are adapted to the push plate. The vertical width of the push slot is smaller than the diameter of the inner cylinder, and the spacing between adjacent push slots is equal to the diameter of the inner cylinder.

9. The fireworks assembly line according to claim 8, characterized in that, The second working unit also includes: a second fixture and a first conveying assembly; The second clamp is movably mounted on the first conveying assembly and is provided with a second feeding chamber corresponding to the first feeding chamber. The second clamp is used to convey the inner tube cake of the fireworks. The first conveying assembly includes a first conveyor line for conveying the second fixture from the feeding end to the first fixture; The pushing component also includes a second pushing member disposed below the first pushing member; the telescopic part of the second pushing member corresponds to the second feeding chamber and is used to push the fireworks inner tube cake of the second feeding chamber into the first feeding chamber.

10. The fireworks assembly line according to claim 9, characterized in that, Explosion-proof clamps are installed on both sides of the first conveyor line; The feed end of the first conveyor line is connected to the feed port on the first explosion-proof wall.

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