Multi-space isolated explosion-proof type firework powder compression granulation automatic production line

Abstract

The utility model discloses a kind of multi-space isolation explosion-proof fireworks gunpowder compression type granulation automation production line, including the layout of feeding, manipulator, filler granulation forming, finished product conveying belt discharge four stations in sequence, wherein blanking, filler granulation forming and finished product conveying belt discharge station are located in the compartment room separated by explosion-proof isolation wall respectively;Quantitative feeding device for powder mixing discharge is provided on feeding station;Manipulator is fed into the material of blanking station to the feed hopper of filler granulation forming;Powder filler granulation forming station includes mould forming mechanism and the filler mechanism of filler in the mould of mould forming mechanism, and the discharge end of mould forming mechanism is provided with the finished product conveying belt discharge device that product is exported to finished product area.The utility model is through explosion-proof isolation layout, optimization mould structure, accurate mould design, high -efficient cleaning residual and shorten forming cycle etc. innovation, significantly improve safety performance, stably improve product quality, substantially improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fireworks and gunpowder granulation production technology, specifically a multi-space isolation explosion-proof automated production line for fireworks and gunpowder compression granulation. Background Technology

[0002] In traditional fireworks granulation processes, manual or semi-mechanized operations suffer from drawbacks such as flammable and explosive powder, severe dust pollution, low production efficiency, and uniform particle shape, making it difficult to meet the modern fireworks industry's demands for safety, efficiency, and customization. To address this, the patented technology achieves an innovative breakthrough through a mold pressing process, employing an automated filling system to precisely inject the powder mixed with binder into the mold.

[0003] For example, patent publication number CN109896910B discloses an automatic filler granulation device for fireworks. In its structure, several rotating shafts are installed in the gunpowder box, and the rotating shafts are connected to a first rotating device. A leveling fan blade is installed on the rotating shaft. The process is as follows: when the gunpowder box passes through the granulation zone, the gunpowder in the gunpowder box enters the granulation through hole from the bottom. At the same time, the leveling fan blade rotates to slightly press down on the gunpowder, thereby preventing some granulation through holes from not being completely filled due to air. Thus, by dispensing the gunpowder twice, it is ensured that each granulation through hole is filled with the gunpowder.

[0004] However, in the granulation process of fireworks gunpowder, due to the flammability of the gunpowder particles, the processing and production must ensure excellent explosion-proof performance, requiring strict control over the layout of the processing equipment and the equipment itself. However, existing granulation equipment has many shortcomings: its feeding and discharging are located in the same space, leading to a large accumulation of raw materials and products, significantly increasing the risk of flammability and explosion. Furthermore, traditional mold structures often use a fixed lower mold, a moving upper mold for pressing, and an ejector pin for ejection. While this can complete granulation, it presents safety hazards, insufficient precision, low efficiency, and maintenance difficulties in fireworks gunpowder production.

[0005] Specifically, fireworks gunpowder is extremely sensitive to mechanical vibration and friction. The reciprocating motion of the ejector pin in traditional molds poses a significant safety hazard, easily generating static electricity and sparks, seriously threatening production safety. Simultaneously, unstable ejector pin movement leads to gunpowder particle breakage, producing combustible dust and further increasing the risk of explosion. Regarding particle size control, traditional molds are susceptible to mechanical vibration and displacement, resulting in deviations in gunpowder particle forming dimensions. Furthermore, variations in the clearance between the ejector pin and the mold hole affect particle size uniformity, making it difficult to meet the demands of high-precision production.

[0006] In terms of production efficiency, the ejection action and upper mold movement of traditional molds are performed in separate steps, which prolongs the molding cycle. Furthermore, the ejection mechanism is complex and prone to failure, affecting production continuity. In addition, traditional molds are difficult to adapt to the large-scale, high-speed, continuous production mode of modern fireworks, requiring more manual intervention, increasing operational difficulty and labor intensity, thus hindering the improvement of production efficiency. Regarding mold maintenance, the traditional structure increases manufacturing difficulty and cost.

[0007] The existing structure also suffers from inefficiency and powder waste in the filling process. To ensure consistent granule size, the amount of powder applied is usually more than needed, resulting in excess powder that accumulates and affects filling efficiency. Simultaneously, residual powder on the surface of the granulation zone interferes with the bonding between the mold and newly filled powder, affecting molding quality. Furthermore, long-term accumulation of powder leads to waste and increases production costs.

[0008] Therefore, this application proposes a multi-space isolation explosion-proof automated production line for granulation of fireworks gunpowder. It adopts a novel mold design, aiming to overcome the defects of traditional structures, improve the quality and production efficiency of fireworks gunpowder granulation, reduce safety risks, and at the same time efficiently recover excess powder from fillers, ensure smooth filler flow, thoroughly clean residues in the granulation area, improve mold forming quality, realize powder recycling, reduce waste and lower costs. Utility Model Content

[0009] The purpose of this invention is to overcome the defects and shortcomings of the existing technology and provide an automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation, which solves the various problems existing in the existing technology.

[0010] To achieve the above objectives, this utility model provides the following technical solution: A multi-space isolated explosion-proof automated production line for fireworks and gunpowder compression and granulation includes a feeding station, a manual handling station, a powder filling and granulation station, and a finished product conveyor belt discharge station arranged sequentially along the material flow direction. The feeding, forming, and discharge stations are isolated from each other by explosion-proof isolation walls and are located in independent compartments. The feeding station is equipped with a quantitative feeding device for mixing and quantitative output of the medicine powder; The manual handling station is located between the feeding station and the forming station. It is equipped with a robotic arm that can move in three-dimensional space. The front end of the robotic arm is equipped with a flip-up hopper for receiving materials from the feeding station and transferring them to the feeding hopper of the forming station. The powder filling granulation molding station includes a mold forming mechanism and a filling mechanism for filling the mold. The mold forming mechanism includes an upper mold and a lower mold that can be closed, as well as a fixed positioning rod. The filling mechanism includes a reciprocating filling frame with a pusher scraper device at its front end for cleaning the residual material on the mold surface and pushing out the molded product. Below the filling frame is a residual material recovery structure for collecting and circulating excess powder. The mold forming mechanism is equipped with a finished product conveyor belt discharge device at the discharge end for outputting the molded products; It also includes fire-fighting devices installed on the tops and equipment of each compartment.

[0011] The quantitative feeding device includes a frame, on which a mixing hopper is mounted. A spiral mixing guide is installed inside the mixing hopper to quantitatively discharge the material. The spiral mixing guide includes a rotating shaft installed inside the mixing hopper. Spiral blades are provided at the bottom of the rotating shaft. A sealing plate is provided at the bottom discharge end of the mixing hopper, leaving a discharge gap between the plate and the discharge port.

[0012] The robotic arm includes a first joint and a second joint arranged horizontally. The first joint is mounted on a vertical height adjustment column via a connecting seat. One end of the second joint is rotatably connected to the first joint, and the other end is equipped with a horizontally rotatable hopper.

[0013] The filling mechanism includes a filling frame that can reciprocate on a workbench, a filling device installed inside the filling frame, a pusher scraper installed at the front end of the filling device, an opening on the receiving station of the workbench, and a structure of two downward-flipping gates hinged at the opening. The gates are two opposing gates, each driven by its corresponding overturning power drive device. A residual material guide trough is provided below the opening. The residual material guide trough is a conical structure. The two gates are located inside the upper end of the residual material guide trough. A feed hopper is erected directly above the receiving station.

[0014] The packing frame contains a packing chamber, and the opening is larger than the size of the packing chamber. The packing frame is provided with an mounting plate, and a packing device that extends into the packing chamber is mounted on the mounting plate. The packing device includes a rotating shaft, and a packing fan blade arranged in a circumferential direction is installed at the bottom end of the rotating shaft. The rotation of the rotating shaft is achieved by a power drive device at its top.

[0015] The reciprocating movement of the packing frame is driven by a push-pull mechanism, which includes a push rod located in the middle of the rear end of the packing frame. The movement of the push rod is driven by push-pull power drive devices on both sides. The packing frame is guided by guide components on both sides. The guide components include a movable guide plate fixed at the upper edge of the packing frame. Guide grooves are provided on both sides of the worktable. Guide blocks that cooperate with the guide grooves are installed on both sides of the movable guide plate through connecting plates. The push scraper is located in front of the movable guide plate and includes a scraper for scraping the flour at the bottom of the upper mold pressure rod and a scraper for scraping the flour at the top of the lower mold. The scraper and scraper are an integral structure. The pushing and scraping action of the push scraper is driven by push-pull power drive devices on both sides. The push-pull power drive devices are installed on the movable guide plate. Guide blocks that cooperate with the guide grooves are installed on both sides of the push scraper through connecting plates. The guide grooves are filled with water to reduce friction and lower the guiding temperature.

[0016] The mold forming mechanism includes an upper mold and a lower mold that fit together and can move up and down. The lower mold has a plurality of spaced forming holes evenly distributed on its upper surface. The forming holes are through holes. A fixed support positioning seat is provided below the lower mold. Positioning rods corresponding to the forming holes and extending into the forming holes to cooperate with the forming holes are distributed on the upper surface of the support positioning seat.

[0017] The bottom of the mold forming mechanism is provided with a support base. Guide pillars are installed at the four corners of the upper end face of the base. An upper fixing plate is installed on the top of the guide pillars. A hydraulic cylinder is installed on the upper fixing plate. An upper mold fixing plate is installed at the extended end of the piston rod of the hydraulic cylinder. An upper mold is installed on the bottom end face of the upper mold fixing plate. Guide holes that cooperate with the guide pillars are provided at the four corners of the upper mold fixing plate. Pressure rods that cooperate with the forming holes are distributed at intervals on the bottom end face of the upper mold. The lower mold is guided and installed above the support positioning seat by guide rods at the four corners. The support positioning seat is fixedly mounted on the machine base. The support positioning seat has guide through holes that cooperate with the guide rods. A lifting plate is fixed at the bottom of the guide rod. The lifting plate moves up and down between the support positioning seat of the lower mold and the machine base, and the lifting is driven by the hydraulic cylinder below. The positioning rod is vertically disposed on the upper end face of the support positioning seat, and its axis coincides with the axis of the corresponding forming hole.

[0018] The mold forming mechanism is provided with a guide trough at the discharge end. The finished product conveyor belt discharge device includes a finished product conveyor belt. The feed end of the finished product conveyor belt is located below the guide trough. The finished product conveyor belt is equipped with a spaced-apart circulating receiving frame. The discharge end of the finished product conveyor belt is provided with a filter guiding component for finished product output and screening.

[0019] The filter guide assembly includes an inclined guide trough that is positioned directly opposite the discharge end of the finished product conveyor belt. The guide trough is inclined downwards and faces the discharge end of the finished product conveyor belt. An inclined filter screen trough is positioned below the guide trough, with the inclination direction of the filter screen trough being opposite to that of the guide trough. A slag receiving box is located below the filter screen trough, and a finished product receiving box is located at the discharge end of the filter screen trough.

[0020] Compared with the prior art, the beneficial effects of this utility model are: This utility model, through innovations such as explosion-proof isolation layout, optimized mold structure, residue removal, and shortened molding cycle, significantly improves safety performance, stabilizes and enhances product quality, and greatly increases production efficiency, effectively solving the defects of traditional technologies. Specifically: The raw material feeding, pressing, and finished product processing equipment are separated by explosion-proof isolation walls. This layout reduces the overall risk in the production process and effectively avoids serious safety accidents such as chain explosions that may be caused by the centralized arrangement of equipment, providing a more reliable safety guarantee for the production process.

[0021] The receiving station where the filling mechanism is located is equipped with a structure for the recycling and reuse of medicine powder, which builds an efficient and complete medicine powder recycling system. After the filling bin completes the filling action, the excess medicine powder remaining in the filling bin is recycled. The recycled medicine powder can be reused, realizing the recycling of medicine powder, effectively saving production costs and improving resource utilization. Meanwhile, a scraper device is installed at the front end of the filler. When the filler returns after completing the filling process, the scraper closely adheres to the surface of the granulation zone, thoroughly scraping away any remaining powder and guiding it to the recovery area. This design ensures that the powder is fully recovered, avoiding waste, while also keeping the surface of the granulation mold clean and tidy, allowing newly filled powder to perfectly contact and bond with the mold, thus improving the quality of mold forming.

[0022] The filling, mold closing, pressing, and ejection processes are completed by using a positioning rod for fixing and the lower mold to move. This reduces friction between the positioning rod and the mold hole, resulting in smoother ejection, lowering the breakage rate of gunpowder particles and dust generation, ensuring production safety, and also ensuring uniform particle size and improving granulation quality. During molding, the upper mold closes only when the lower mold is in place, ensuring precise alignment, reducing dimensional deviations, and meeting the requirements of high-precision production. In addition, the positioning rod mechanism is integrated into the lower mold, and ejection is achieved by its movement, shortening the molding cycle and improving efficiency. The upper mold has a simple structure, reducing mold complexity and cost, and improving the product's economy and competitiveness. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a schematic diagram of the quantitative feeding device; Figure 3 This is a schematic diagram of the robotic arm. Figure 4 This is a schematic diagram of a robotic arm with its pick-and-place hopper located above the feed hopper. Figure 5 This is a schematic diagram of the packing mechanism; Figure 6 A partial structural diagram of the rotating and opening residual material recycling gate and its opening; Figure 7 This is a schematic diagram of the structure of the packing frame and the guide assembly in a guiding fit. Figure 8 for Figure 7 Schematic diagram of the structure at point A; Figure 9 This is a schematic diagram of the mold forming mechanism; Figure 10 for Figure 9 Enlarged view of the local structure at point B; Figure 11 This is a schematic diagram of the finished product conveyor belt discharge device.

[0024] Figure label: 1. Explosion-proof isolation wall; 2. Quantitative feeding device; 21. Frame; 22. Mixing hopper; 23. Spiral mixing guide; 3. Robot arm; 31. First joint of robot arm; 32. Vertical height adjustment column; 33. Second joint of robot arm; 34. Mounting base; 35. Rotating shaft; 4. Pick-up and unpick-up hopper; 5. Feed hopper; Mold forming mechanism; 61. Positioning rod; 62. Upper mold; 63. Lower mold; 64. Forming hole; 65. Support positioning seat; 67. Machine base; 68. Guide column; 69. Upper fixing plate; 610. Upper mold fixing plate; 611. Guide rod; 612. Lifting plate; 613. Fire hydrant; 614. Pressure rod; 7. Packing mechanism; 71. Packing frame; 72. Workbench; 73. Packer; 74. Opening; 75. Gate; 76. Overturning power drive device; 77. Residual material guide chute; 78. Mounting plate; 79. Power drive device; 710. Push rod; 711. Push-pull power drive device one; 712. Moving guide plate; 714. Guide groove; 715. Guide block one; 716. Push-pull power drive device two; 717. Guide block two; 718. Circular guide rod; 719. Guide wheel; 720. Guide groove; 721. Protective cover; 8. Scraper device; 9. Finished product conveyor belt discharge device; 91. Finished product conveyor belt; 92. Receiving frame; 93. Filter guide assembly; 931. Guide trough; 932. Filter screen trough. Detailed Implementation

[0025] 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 scope of protection of the present utility model.

[0026] See appendix Figure 1 and attached Figure 9 A multi-space isolated explosion-proof automated production line for the compression and granulation of fireworks and gunpowder includes four independent workstations arranged sequentially: feeding, robotic arm, filler granulation and molding, and finished product conveyor belt discharge. The feeding, filler granulation and molding, and finished product conveyor belt discharge workstations are located in compartments separated by an explosion-proof isolation wall 1. The feeding workstation is equipped with a quantitative feeding device 2 for mixing and discharging the powder. The robotic arm workstation is located between the feeding and powder filler granulation and molding workstations and in front of the isolation wall. It includes a three-dimensionally adjustable robotic arm 3, with a tiltable hopper 4 installed at its front end. The material from the feeding station is fed into the feed hopper 5 of the filler granulation molding through dynamic adjustment in three-dimensional space. The powder filler granulation molding station includes a mold forming mechanism 6 and a filling mechanism 7 for filling the mold into the mold of the mold forming mechanism. The positioning rod 61 in the mold forming mechanism 6 is fixed, and the upper mold 62 and the lower mold 63 move. During molding, the upper mold 62 moves and closes with the lower mold 63 to press and form. After molding, the lower mold 63 moves down to push the material out. The filling mechanism 7 includes a reciprocating filling frame 71. The receiving station where the filling frame 71 is located is equipped with a structure for recycling and reusing the medicine powder. The front end of the filling frame 71 is equipped with a useful... The device includes a scraper plate 8 for scraping back excess material and ejecting finished products; a finished product conveyor belt discharge device 9 for outputting products to the finished product area at the discharge end of the mold forming mechanism 6; and a fire-fighting device, which includes an integral fire hydrant installed on the top of the compartment and two local fire hydrants 613 installed on the equipment. The fire hydrants 613 are symmetrically distributed on both sides of the upper mold and are installed at an angle through a connecting frame. Specifically, their tops are integrated with smoke sensors and infrared flame sensors to monitor the fire situation in real time. The equipment is equipped with an infrared flame sensor for driving the local fire hydrant to start. At the water inlet... Pressure sensors are installed to detect water pressure in the pipe network, and temperature sensors are arranged around the outlet to detect abnormal temperature rises in the environment. Each sensor is connected to a central processing unit built into the fire hydrant control box via wired / wireless means. This processor is equipped with a fire identification algorithm, which can comprehensively analyze signals from multiple sensors and generate control commands. When the smoke concentration exceeds the threshold, flame spectral characteristics are detected, or the temperature rises suddenly, the central processing unit immediately triggers the solenoid valve to automatically open the fire hydrant outlet. At the same time, it sends fire alarm location information and equipment status data to the fire command center through a wireless communication module, realizing rapid fire response and remote collaborative handling.

[0027] The explosion-proof isolation wall 1 can adopt a conventional structure, such as a sandwich structure of steel keel frame filled with fiber cement composite steel plate and rock wool. This structure has the functions of physical barrier, energy attenuation and debris interception. At the same time, the construction is flexible and the cost is controllable. Moreover, the hydraulic cylinder pump station and electrical control box in the whole production line are set up separately in two other compartments.

[0028] See appendix Figure 2 The feeding station is located in one of the compartments of the quantitative feeding device 2 used to mix the powder. Specifically, it includes a frame 21, on which a mixing hopper 22 is mounted. A spiral mixing guide 23 for quantitatively discharging the material is installed in the mixing hopper 22. The spiral mixing guide 23 includes a rotating shaft installed in the mixing hopper 22. The bottom of the rotating shaft is provided with spiral blades. The bottom discharge end of the mixing hopper 22 is provided with a sealing plate and a discharge gap is left between the discharge port and the discharge end.

[0029] During material handling, the hopper 4 at the front end of the robotic arm 3 is located at the discharge port to receive the material. The handling station is situated between the unloading station and the powder filler granulation station, and in front of the partition wall. This positioning facilitates the handling of the medicine in the two separate spaces. The robotic arm 3 includes a horizontally positioned first joint 31. One end of the first joint 31 is guided and mounted on a vertical height adjustment column 32 via a connecting seat. The other end of the first joint 31 is rotatably mounted with a horizontally positioned second joint 33. The other end of 33 is rotatably mounted with a mounting base 34. A horizontally oriented rotating shaft 35 is mounted on the mounting base, and a material handling hopper 4 is mounted at the end of the rotating shaft 35. Vertical guidance is adjusted by a hydraulic cylinder, and all rotations are driven by rotary hydraulic cylinders. During material handling, the hydraulic cylinder drives the connecting base to move vertically up and down on the vertical height adjustment column. One rotary hydraulic cylinder drives the first joint 31 of the robot arm to rotate, and another rotary hydraulic cylinder drives the second joint 33 of the robot arm to rotate. The cooperation of these three mechanisms moves the material handling hopper 4 into position for material handling and feeding. The structure of the robot arm 3 is as follows: Figure 3 As shown.

[0030] Further details can be found in the appendix. Figure 4-8The packing mechanism 7 includes a packing frame 71 that can reciprocate on a worktable 72. A packing device 73 is installed inside the packing frame 71. The packing frame 71 contains a packing bin, and the opening 74 is larger than the size of the packing bin. An mounting plate 78 is provided on the packing frame 71, and the packing device 73, which extends into the packing bin, is installed on the mounting plate 78. The packing device 73 includes a rotating shaft, and a packing fan blade arranged in a circumferential direction is installed at the bottom end of the rotating shaft. The rotation of the rotating shaft is achieved by a power drive device 79 at its top. The power drive device 79 is a hydraulic rotary cylinder drive (transmitting torque through a top hydraulic system); or an explosion-proof motor + reducer combination (transmitting to the rotating shaft through a coupling and sprocket); or a gear transmission system (achieving multi-shaft linkage through a synchronous gear set); or a pneumatic or electric push rod (indirectly driving the swing mechanism to drive the rotating shaft to rotate).

[0031] The reciprocating movement of the packing frame 71 is driven by a push-pull mechanism. This mechanism, designed to drive the reciprocating motion along a track, allows the packing frame to move back and forth between the receiving station and the granulation station. The push-pull mechanism includes a push rod 710 located at the center of the rear end of the packing frame. The movement of the push rod 710 is driven by push-pull power drive devices 711 on both sides. The packing frame 71 is guided by guide components on both sides. These guide components include a movable guide plate 712 fixed at the upper edge of the packing frame. Guide grooves 714 are provided on both sides of the worktable. Guide blocks 715, which guide and cooperate with the guide grooves 714, are installed on both sides of the movable guide plate 712 via connecting plates. The scraper of the scraper device is located in front of the movable guide plate (712) and includes a scraping mechanism for scraping the upper... The device includes a scraper 1 at the bottom of the molding rod for scraping the powder material and a scraper 2 for scraping the powder material from the upper end of the lower mold. The scraper 1 and scraper 2 are an integral structure. The scraping action of the scraper device 8 is driven by the push-pull power drive device 2 716 on both sides. The push-pull power drive device 2 716 is installed on the moving guide plate 712. The two sides of the scraper are connected by connecting plates and have guide blocks 2 717 that cooperate with the guide groove. The scraper is made of rubber and has the characteristics of wear resistance, good elasticity and impact resistance. Its bottom end face is inclined so that it can fit tightly against the upper end face of the lower mold. It can efficiently complete the scraping and pushing tasks in reciprocating movement, reduce material leakage and residue, help keep the mold clean, improve production efficiency and product quality, and reduce maintenance costs. The overall design is reasonable and effective.

[0032] Guide block one and guide block two have the same structure. In order to further reduce friction, a circular guide rod 718 is installed inside the guide groove. A guide wheel 719 is rotatably installed on the bottom end face of guide block one 715. A guide groove 720 is provided in the middle of the guide wheel 719 to guide and cooperate with the guide wheel 719. Furthermore, a protective cover 721 for protecting the guide assembly is installed on the guide groove. The protective cover 721 is a sealed groove structure, which contains water to reduce friction, maintain humidity to reduce dust, and lower the guide temperature. The comprehensive structure further ensures that the packing frame moves smoothly only along the preset straight trajectory, avoiding swaying or jamming, and achieving high-precision guidance.

[0033] The front end of the filler 73 is equipped with a pusher scraper device 8. An opening 74 is provided on the receiving station of the worktable 72. A structure consisting of two downward-flipping gates 75 is hinged at the opening 74. The gates 75 are driven by their respective overturning power drive devices 76. A residual material guide trough 77 is provided below the opening 74. The residual material guide trough 77 has a conical structure. The two gates are located inside the upper end of the residual material guide trough. A feed hopper 5 is erected directly above the receiving station. The opening and closing flipping action of the gates 75 is driven by the overturning mechanism. Through the structure of the flipping gates 75, excess powder can be accurately and timely recovered during the filling process (the excess powder distributed during filling to ensure work efficiency and consistency of particle size is collected before the mold is completely filled). After the reciprocating motion of the device is in place, the opening of the sealing plate will quickly collect these remaining powders. This process is automatic and does not require manual intervention, which greatly improves the recovery efficiency and avoids the accumulation of residual powder in the filling area. Meanwhile, the packing operation space is kept clean at all times, and there will be no compression due to the accumulation of powder, thus ensuring that the packing work can be carried out continuously and smoothly, effectively improving the overall production efficiency.

[0034] Further details can be found in the appendix. Figure 9 , 10The mold forming mechanism 6 includes an upper mold 62 and a lower mold 63 that fit together and can move vertically. The lower mold 63 has multiple spaced forming holes 64, which are through holes. A fixed support positioning seat 65 is located below the lower mold 63. Positioning rods 61, corresponding to and intersecting the forming holes, are distributed on the upper surface of the support positioning seat 65. A base 67, serving as a support frame, is located at the bottom of the mold forming mechanism 6. Guide pillars 68 are installed at the four corners of the upper surface of the base 67. An upper fixing plate 69 is installed on the top of the guide pillars 68. A hydraulic cylinder is installed on the upper fixing plate 69. An upper mold fixing plate 610 is installed at the extended end of the piston rod of the hydraulic cylinder. An upper mold 62 is installed on the bottom surface of the upper mold fixing plate 610. Guide holes, corresponding to the guide pillars 68, are provided at the four corners of the upper mold fixing plate 610. Pressure rods 614, corresponding to the forming holes 64, are distributed at intervals on the bottom surface of the upper mold 62. The lower mold 63 is guided and installed above the support positioning seat 65 by the guide rods 611 at the four corners. The support positioning seat 65 is fixedly mounted on the machine base 67. The support positioning seat 65 has guide through holes that cooperate with the guide rods 611. The bottom end of the guide rod 611 is fixed with a lifting plate 612. The lifting plate 612 moves up and down between the support positioning seat 65 of the lower mold and the machine base 67, and the lifting is driven by the hydraulic cylinder below. The positioning rod 61 is vertically set on the upper end face of the support positioning seat 65, and its axis coincides with the axis of the corresponding forming hole 64.

[0035] Furthermore, in the structure, the forming hole 64, pressure rod 614, and positioning rod 61 can be machined in a single clamping operation to reduce the impact of clamping errors on coaxiality and perpendicularity. The pressure rod 614 and positioning rod 61 are tightly fitted with the forming hole 64, ensuring no powder leakage. Therefore, a certain level of precision is required for this fit. To meet these requirements, high-precision machining equipment is used. For the high-precision mold required in this application, the dimensional tolerances of the positioning rod diameter and forming hole diameter can be controlled within ±0.005mm. Additionally, during machining, precision measuring tools such as micrometers and dial indicators are used multiple times to measure the diameters of the positioning rod and forming hole. Machining parameters are adjusted promptly based on the measurement results, and areas with large dimensional deviations are corrected to ensure the final dimensions meet design requirements. For the positioning rod, precision turning, precision grinding, and lapping processes can be used to reduce surface roughness. For example, the surface roughness of the positioning rod after lapping can reach Ra0.1-Ra0.2μm. For formed holes, processes such as reaming and boring can be used to improve the surface quality of the holes, so that the surface roughness of the holes reaches Ra0.4-Ra0.8μm.

[0036] See appendix Figure 11The mold forming mechanism 6 has a guide trough at its discharge end. The finished product conveyor belt discharge device 9 includes a finished product conveyor belt 91. The feed end of the finished product conveyor belt 91 is located below the guide trough 10, and a receiving frame 92 for circulating material receiving is installed on the finished product conveyor belt 91 at intervals. The discharge end of the finished product conveyor belt 91 is provided with a filter guide assembly 93 for guiding material and filtering the product. The filter guide assembly 93 includes a guide trough 931 that is inclined and faces the discharge end of the finished product conveyor belt 91. It is inclined downward and faces the discharge end of the finished product conveyor belt 91. An inclined filter screen trough 932 is installed below the guide trough 931. The inclination direction of the filter screen trough 932 is opposite to the inclination direction of the guide trough 931. A slag receiving box is provided below the filter screen trough 932, and a finished product receiving box is provided at the discharge end of the filter screen trough 932.

[0037] The working process of the above structure is as follows: Feeding at the feeding station: The robotic arm moves the pick-and-place hopper 4 to the bottom of the mixing hopper 22 at the feeding station. The hydraulic rotary cylinder at the rotating end starts and drives the rotating shaft installed in the mixing hopper 22 to rotate. The spiral blades at the bottom of the rotating shaft rotate synchronously. During the rotation, the spiral blades generate an axial thrust on the material in the mixing hopper 22, conveying the material from the bottom of the mixing hopper 22 to the discharge end. Since the discharge end at the bottom of the mixing hopper 22 is equipped with a sealing plate and leaves a discharge gap with the discharge port, the material is continuously squeezed out from the discharge gap under the continuous push of the spiral blades, realizing the discharge process.

[0038] Filler granulation and molding: First, after the feed hopper 4 receives a certain amount of material, it is rotated to the feed hopper 5 above the powder filler granulation and molding station by the spatial movement of the robot arm. The material falls from the feed hopper 5 into the filler bin of the filler frame 71. The push-pull power drive device 11 (push-pull cylinder) on both sides of the worktable 1 starts to receive the hydraulic oil supply and pushes the filler frame 71 to move. At the same time, the moving guide plate 712 above it moves synchronously with the frame. The guide blocks 715 on both sides of the moving guide plate 712 also move along the guide groove 714 until the filler frame 2 moves from the receiving station to the powder filler granulation and molding station. Then, the filling mechanism 7 performs filling: the power transmission device 79 (hydraulic rotary cylinder) located at the end of the shaft of the filler 73 is activated. The shaft rotates and transmits power to the filling fan blades, causing the filling fan blades to rotate smoothly in the filling chamber along a certain trajectory. During the rotation, the filling fan blades push and stir the powder in the chamber, allowing the powder to circulate within the chamber. As the filling fan blades continue to rotate, the powder continuously falls into the forming hole of the mold at the granulation station (in this process, a test has been conducted in advance, and the operator will closely observe the filling status of the powder in the forming hole of the mold, pre-control the sufficient filling time, or detect it through a detection device). When the forming hole is filled with powder, a stop signal is immediately issued, the hydraulic system stops supplying oil to the hydraulic rotary cylinder, the hydraulic rotary cylinder stops moving, and the shaft and filling fan blades also stop rotating, completing one filling operation. Material recovery after filling: The push-pull power drive device 716 (hydraulic cylinder) is activated, and the cylinder piston slowly retracts, driving the packing frame 71 from the granulation station to the material receiving station. During the return stroke, the front end of the packing frame 71 is equipped with a scraper to scrape the residual powder on the surface of the mold in the granulation area to the feeding station. After the station, the overturning power transmission device 76 is activated, which drives the two gates 75 to open, so that the excess powder remaining in the packing bin and the powder scraped by the scraper fall into the guide trough under the action of gravity for recovery. The recovered powder can be reused. After the powder has fallen for a certain period of time, the overturning power transmission device 14 is activated to close the gates and start the next round of material receiving operation. Molding process: After the molding hole of the lower mold 63 is filled with powder, the upper mold 62 moves under the drive of the hydraulic cylinder. During the process, its guiding movement is guided by the guide holes at the four corners of the upper mold fixing plate 69 and the guide post 68 respectively. When it descends to a certain position, the pressure rod 614 is positioned in the molding hole 64 and squeezes the powder in the molding hole 64. With the action of the upper mold driving hydraulic cylinder, the upper mold is slowly pressed down until the bottom end face of the upper mold and the top end face of the lower mold are closed. During the process, the powder is first pre-pressed with a lower pressure to make it initially dense and expel some air. Then the pressure is quickly increased to the main pressure molding. During this period, the gas is completely removed by a short pressure relief-pressure holding cycle. Finally, the powder is fully solidified under high pressure for a certain period of time to complete the pressing. After that, the upper mold rises and the lower mold continues to descend to expose the product. At this time, the push-pull power drive device 716 (hydraulic cylinder) is activated to drive the push scraper to move forward and smoothly push the molded granules to the discharge port position to successfully complete the discharge operation.

[0039] After discharge, the scraper returns to its original position. During the return process, excess powder can be cleaned from the upper surface of the lower die and the end of the pressure rod of the upper die.

[0040] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0041] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. An automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation, characterized in that... The material includes a feeding station, a manual handling station, a powder filling and granulation molding station, and a finished product conveyor belt discharge station arranged sequentially along the material flow direction. The feeding, molding, and discharge stations are isolated from each other by explosion-proof isolation walls (1) and located in independent compartments. The feeding station is equipped with a quantitative feeding device (2) for mixing and quantitative output of the medicine powder; The manual handling station is located between the feeding station and the forming station. It is equipped with a manipulator (3) that can move in three-dimensional space. The front end of the manipulator (3) is equipped with a flip-up pick-and-place hopper (4) for receiving the material from the feeding station and transferring it to the feed hopper (5) of the forming station. The powder filling granulation molding station includes a mold forming mechanism (6) and a filling mechanism (7) for filling the mold. The mold forming mechanism (6) includes an upper mold (62) and a lower mold (63) that can be closed, and a fixed positioning rod (61). The filling mechanism (7) includes a reciprocating filling frame (71) with a pusher scraper device (8) at its front end for cleaning the residual material on the mold surface and pushing out the molded product. The filling frame (71) is provided with a residual material recovery structure for collecting and circulating excess powder below it. The mold forming mechanism (6) is provided with a finished product conveyor belt discharge device (9) at the discharge end for outputting the molded products; It also includes fire-fighting equipment installed on the tops and equipment of each compartment.

2. The automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation according to claim 1, characterized in that... The quantitative feeding device (2) includes a frame (21), a mixing hopper (22) disposed on the frame (21), and a spiral mixing guide (23) located in the mixing hopper (22).

3. The automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation according to claim 1, characterized in that... The robotic arm (3) includes a first joint (31) and a second joint (33) arranged horizontally. The first joint (31) is mounted on a vertical height adjustment column (32) via a connecting seat. One end of the second joint (33) is rotatably connected to the first joint (31), and the other end is equipped with a horizontally rotatable hopper (4).

4. The automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation according to claim 1, characterized in that... The filling mechanism (7) includes a filling frame (71) on a workbench (72). The workbench (72) has an opening (74) at the material receiving station, a residual material guide trough (77) below the opening, and a gate (75) that can be flipped downward at the opening.

5. The automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation according to claim 4, characterized in that... The gate (75) is a two-panel opening structure, which is controlled to open and close by a power drive device (76).

6. The automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation according to claim 4, characterized in that... The pusher scraper device (8) includes an integrally set upper and lower scrapers, which are used to clean the residual powder on the bottom end face of the upper mold pressure rod and the upper end face of the lower mold, respectively.

7. The automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation according to claim 1, characterized in that... The mold forming mechanism (6) further includes a base (67), a guide post (68), an upper fixing plate (69) and an upper mold fixing plate (610). The upper mold (62) is installed at the bottom of the upper mold fixing plate (610), and the lower mold (63) is installed above the support positioning seat (65) through the guide rod (611).

8. The automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation according to claim 7, characterized in that... The positioning rod (61) is vertically fixed to the upper end face of the support positioning seat (65), and its axis coincides with the axis of the forming hole (64) on the lower mold (63).

9. The automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation according to claim 1, characterized in that... The finished product conveyor belt discharge device (9) includes a finished product conveyor belt (91), a receiving frame (92) disposed thereon, and a discharge end and a filter guide assembly (93) used for finished product output and screening.

10. The automated production line for multi-space isolation explosion-proof fireworks gunpowder compression granulation according to claim 9, characterized in that... The filter guide assembly (93) includes an inclined guide groove (931) and a filter screen groove (932). The guide groove (931) is inclined downward toward the discharge end of the conveyor belt, and the filter screen groove (932) is inclined in the opposite direction to the guide groove. A slag receiving box and a finished product receiving box are respectively provided below it.

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