Multi-space isolation explosion-proof firework gunpowder compression granulation automatic production line

Abstract

The invention discloses a multi-space isolation explosion-proof firework gunpowder compression granulation automatic production line which comprises a feeding station, a mechanical arm station, a filling granulation forming station and a finished product conveying belt discharging station which are sequentially arranged, and the feeding station, the filling granulation forming station and the finished product conveying belt discharging station are located in compartments separated by explosion-proof isolation walls respectively. A quantitative feeding device for mixing and discharging medicine powder is arranged on the feeding station; the manipulator is used for feeding the materials at the discharging station into a feeding hopper for filling, granulating and forming; the powder filling granulation forming station comprises a mold forming mechanism and a filling mechanism for filling a mold of the mold forming mechanism, and a finished product conveying belt discharging device for outputting products to the finished product area is arranged at the discharging end of the mold forming mechanism. Through the innovations of explosion-proof isolation layout, mold structure optimization, precise mold closing design, efficient residue cleaning, molding period shortening and the like, the safety performance is remarkably improved, the product quality is stably improved, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of fireworks powder granulation production, in particular to an automatic production line for multi-space isolation explosion-proof fireworks powder press granulation. Background Art

[0002] In the traditional fireworks gunpowder granulation process, manual or semi-mechanized operations have defects such as easy flammability and explosion of powder, serious dust pollution, low production efficiency and single particle shape, which makes it difficult to meet the modern fireworks industry's needs for safety, efficiency and customization. To this end, the patented technology achieves an innovative breakthrough through the mold pressing process, using an automated filling system to accurately inject the powder mixed with the binder into the mold.

[0003] For example, patent publication number CN109896910B discloses an automatic filling, pressing and granulating device for fireworks. Its structure discloses that a number of rotating shafts are installed in the medicine box, and the rotating shafts are connected to a first rotating device. Scraping fan blades are installed on the rotating shafts. The process is: when the medicine box passes through the granulation area, the gunpowder in the medicine box enters the granulation through-hole from the bottom, and at the same time, the scraping fan blades rotate to slightly press down the gunpowder, thereby preventing some granulation through-holes from being unable to be fully filled due to air, thereby ensuring that each granulation through-hole is filled with medicine through two times of dispensing.

[0004] However, during the granulation process of fireworks powder, due to the flammability of the powder pellets, 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 feed and discharge are located in the same space, resulting in a large accumulation of raw materials and products, significantly increasing the risk of flammability and explosion. In addition, traditional mold structures often use a fixed lower mold, a movable upper mold for pressing, and an ejector pin for ejection. Although this method can achieve granulation, it poses safety risks, insufficient precision, low efficiency, and difficult maintenance in fireworks powder production.

[0005] Specifically, fireworks powder 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. Furthermore, the unstable motion of the ejector pin causes powder particles to break, generating combustible dust and further increasing the risk of explosion. Regarding particle size control, traditional molds are susceptible to mechanical vibration and displacement, leading to deviations in the size of the formed powder particles. 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, traditional mold ejection and upper mold movement are performed separately, which prolongs the molding cycle. Furthermore, the ejection mechanism is complex and prone to frequent failures, affecting production continuity. Furthermore, traditional molds are difficult to adapt to the high-volume, high-speed, continuous production model of modern fireworks. The high manual intervention, operational difficulty, and labor intensity restrict 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 specifications, the amount of powder applied is often greater than required, resulting in excess powder accumulation and impacting filling efficiency. Furthermore, residual powder on the surface of the granulation area interferes with the bonding between the mold and the newly filled powder, affecting molding quality. Long-term accumulation also results in powder waste and increases production costs.

[0008] Therefore, this application proposes a multi-space isolation explosion-proof fireworks gunpowder pressing and granulation automated production line, which adopts a new 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 filler powder, ensure the smooth flow of filler, thoroughly clean up the residue in the granulation area, improve the mold molding quality, realize the recycling of powder, reduce waste and reduce costs. Summary of the Invention

[0009] The purpose of the present invention is to overcome the defects and shortcomings of the existing technology and provide a multi-space isolation explosion-proof fireworks gunpowder press granulation automatic production line to solve the various problems existing in the existing technology.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] An automated production line for the compression molding and granulation of fireworks powder with multiple isolation and explosion-proof spaces, comprising four independent workstations arranged sequentially: feeding, manipulator, filler granulation molding, and finished product conveyor belt discharge. The unloading, filler granulation molding, and finished product conveyor belt discharge workstations are separated by explosion-proof isolation walls.

[0012] The feeding station is equipped with a quantitative feeding device for mixing and discharging medicine powder;

[0013] The handling robot is located between the unloading station and the powder filler granulation molding station and in front of the isolation wall. It includes a three-dimensionally adjustable manipulator with a reversible pick-up and place hopper installed at the front end of the manipulator. Through dynamic adjustment in three dimensions, the material from the unloading station is put into the feed hopper of the filler granulation molding station.

[0014] The powder filler granulation molding station includes a mold molding mechanism and a filling mechanism for filling the mold of the mold molding mechanism. The positioning rod in the mold molding mechanism is fixed, and the upper mold and the lower mold are movable. During molding, the upper mold moves and closes with the lower mold to press and mold. After molding, the lower mold moves down to push the material. The filling mechanism includes a reciprocating filling frame. The material receiving station where the filling frame is located is provided with a structure for recycling and reusing the medicine powder. The front end of the filling frame is provided with a scraper device for scraping back the residual material and pushing out the finished product.

[0015] The discharging end of the mold forming mechanism is provided with a finished product conveyor belt discharging device for discharging the products to the finished product area;

[0016] The utility model also comprises a fire-fighting device, which comprises an integral fire hydrant arranged on the top of the compartment room and a local fire hydrant arranged on the equipment.

[0017] The quantitative feeding device includes a frame, a mixing hopper is mounted on the frame, a spiral mixing guide is installed in the mixing hopper for quantitatively guiding the material out, the spiral mixing guide includes a rotating shaft installed in the mixing hopper, a spiral blade is provided at the bottom of the rotating shaft, and a sealing plate is provided at the bottom discharge end of the mixing hopper to leave a discharge gap with the discharge port.

[0018] The manipulator includes a first manipulator joint arranged in a horizontal direction, one end of the first manipulator joint is installed on a vertical height adjustment column through a connecting seat guide, the other end of the first manipulator joint is rotatably installed with another second manipulator joint arranged in a horizontal direction, the other end of the second manipulator joint is rotatably installed with a mounting seat, a horizontally arranged rotating shaft is provided on the mounting seat, and a picking and placing hopper is installed at the end of the rotating shaft.

[0019] The filling mechanism includes a filling frame that is arranged on the workbench and can move back and forth, a filler is installed in the filling frame, and a push scraper is installed at the front end of the filler. An opening is provided on the material receiving station of the workbench, and the opening is hinged with a structure of a combination of two downward-turnable gate plates, and the gate plates are driven by their respective corresponding overturning power drive devices. A residual material guide trough is provided below the opening, and the residual material guide trough is a cone-shaped structure. The two gate plates are respectively located in the upper end portion of the residual material guide trough, and a feed hopper is set directly above the material receiving station.

[0020] The stuffing box contains a stuffing bin, the opening specification is larger than the specification of the stuffing bin, the stuffing box is provided with a mounting plate, a stuffing device extending into the stuffing bin is installed on the mounting plate, the stuffing device includes a rotating shaft, and a stuffing 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.

[0021] The reciprocating movement of the filling frame is driven by a push-pull mechanism, and the push-pull mechanism includes a push rod located in the middle of the rear end of the filling frame, and the movement of the push rod is driven by a push-pull power driving device 1 on both sides, and the filling frame is guided by a guide assembly arranged on both sides, and the guide assembly includes a movable guide plate fixed to the edge of the upper end of the filling frame, and the workbench is provided with a guide groove. The two sides of the movable guide plate are equipped with a guide block 1 that cooperates with the guide groove through the connecting plate, and the guide groove is filled with water that reduces friction and reduces guide temperature.

[0022] The mold forming mechanism includes an upper mold and a lower mold that cooperate with each other and can be guided and moved up and down. The upper part of the lower mold is evenly distributed with multiple forming holes set at intervals. The forming holes are through holes. A fixed supporting and positioning seat is provided under the lower mold. The upper end surface of the supporting and positioning seat is distributed with positioning rods that correspond one-to-one with the forming holes and extend into the forming holes to cooperate with them.

[0023] The bottom of the mold forming mechanism is provided with a machine base for supporting and mounting, and guide pillars are installed at the four corners of the upper end surface of the machine base, and an upper fixing plate is installed on the top of the guide pillars. A hydraulic cylinder is installed on the upper fixing plate, and an upper mold fixing plate is installed on the protruding end of the piston rod of the hydraulic cylinder. The bottom end surface of the upper mold fixing plate is provided with an upper mold, and the four corners of the upper mold fixing plate are respectively provided with guide holes for guiding with the guide pillars. The bottom end surface of the upper mold is distributed with pressure rods arranged at intervals and corresponding to the forming holes.

[0024] The lower die is guided and installed above the support and positioning seat by guide rods at four corners. The support and positioning seat is fixedly mounted on the machine base. Guide through holes that cooperate with the guide rods are distributed on the support and positioning seat. A lifting plate is fixed to the bottom end of the guide rod. The lifting plate moves up and down between the support and positioning seat of the lower die and the machine base, and the lifting is driven by the hydraulic cylinder below.

[0025] The positioning rod is vertically arranged on the upper end surface of the support positioning seat, and the axis thereof coincides with the axis of the corresponding forming hole.

[0026] The discharge end of the mold forming mechanism is provided with a material guide trough, and the finished product conveyor belt discharge device includes a finished product conveyor belt, the feed end of the finished product conveyor belt is arranged below the material guide trough, and the finished product conveyor belt is installed with spaced-apart circulating material receiving frames, and the discharge end of the finished product conveyor belt is provided with a filtering material guide component for guiding the material and filtering the product.

[0027] The filter guide assembly includes a guide groove that is inclined and facing the discharge end of the finished product conveyor belt. It is inclined downward and arranged toward the discharge end of the finished product conveyor belt. A filter mesh groove is inclined below the guide groove. The inclination direction of the filter mesh groove is opposite to the inclination direction of the guide groove. A slag receiving box is provided below the filter mesh groove, and a finished product receiving box is provided at the discharge end of the filter mesh groove.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] This invention significantly improves safety performance, steadily improves product quality, and greatly increases production efficiency through innovations such as explosion-proof isolation layout, optimized mold structure, residue cleaning, and shortened molding cycle, effectively solving the shortcomings of traditional technologies. Specifically:

[0030] Raw material feeding, pressing, and finished product equipment are separated by explosion-proof isolation walls. This layout reduces the potential for risk throughout the entire production process, effectively avoiding serious safety accidents such as chain explosions that could be caused by the centralized arrangement of equipment, and provides more reliable safety assurance for the production process.

[0031] The receiving station where the filling mechanism is located is equipped with a structure for recycling and reusing medicine powder, which has built an efficient and complete medicine powder recycling system. When the filling bin is completed, the excess medicine powder remaining in the filling bin is recycled and can be put into use again, realizing the recycling of medicine powder, effectively saving production costs and improving resource utilization.

[0032] A push-scraper device is also installed at the front end of the filler. When the filler completes its filling action and returns, the push-scraper closely adheres to the surface of the granulation area, completely scraping away any remaining powder and directing it to the recovery area. This design ensures that the powder is fully recovered, avoiding waste. It also keeps the mold surface in the granulation area clean and tidy, allowing the newly filled powder to perfectly contact and bond with the mold, improving the quality of the mold's shape.

[0033] The filling, mold closing, forming and ejection movements are completed by fixing the positioning rod and moving the lower mold, which reduces the friction between the positioning rod and the mold hole, makes ejection smoother, reduces the breakage rate of gunpowder particles and dust generation, ensures production safety, and also ensures uniform particle size, improving granulation quality. During molding, the upper mold is closed only after the lower mold is in place, and precise alignment is achieved to reduce dimensional deviation and meet high-precision production requirements. 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 product economy and competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 It is a structural schematic diagram of a quantitative feeding device;

[0036] Figure 3 It is a structural diagram of the robot;

[0037] Figure 4 It is a structural diagram of the manipulator's pick-up and place hopper located above the unloading hopper;

[0038] Figure 5 It is a structural diagram of the packing mechanism;

[0039] Figure 6 A schematic diagram of the partial structure of the flip-open and close residual material recovery gate and the opening;

[0040] Figure 7 It is a structural diagram of the guiding cooperation between the filler frame and the guide assembly;

[0041] Figure 8 for Figure 7 Schematic diagram of the structure at A in the middle;

[0042] Figure 9 It is a structural diagram of the mold forming mechanism;

[0043] Figure 10 for Figure 9 A magnified view of the local structure at point B in the middle;

[0044] Figure 11 This is a schematic diagram of the structure of the finished product conveyor belt discharging device.

[0045] Reference numerals:

[0046] 1. Explosion-proof isolation wall; 2. Quantitative feeding device; 21. Frame; 22. Mixing hopper; 23. Spiral mixing guide; 3. Manipulator; 31. First joint of manipulator; 32. Vertical height adjustment column; 33. Second joint of manipulator; 34. Mounting base; 35. Rotating shaft; 4. Pick-up and place hopper; 5. Feed hopper;

[0047] 6. Mold forming mechanism; 61. Positioning rod; 62. Upper mold; 63. Lower mold; 64. Forming hole; 65. Support and positioning seat; 67. Machine base; 68. Guide pillar; 69. Upper fixing plate; 610. Upper mold fixing plate; 611. Guide rod; 612. Lifting plate; 613. Fire hydrant; 614. Pressure rod;

[0048] 7. Filling mechanism; 71. Filling frame; 72. Workbench; 73. Filler; 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 (1); 712. Movable guide plate; 714. Guide groove; 715. Guide block (1); 716. Push-pull power drive device (2); 717. Guide block (2); 718. Circular guide rod; 719. Guide wheel; 720. Guide groove; 721. Protective cover;

[0049] 8. Push scraper device; 9. Finished product conveyor belt discharging device; 91. Finished product conveyor belt; 92. Material receiving frame; 93. Filter guide assembly; 931. Guide trough; 932. Filter mesh trough. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] See attached Figure 1 and attached Figure 9A multi-space isolation explosion-proof fireworks gunpowder pressing granulation automatic production line, including a sequential layout of the feeding, manipulator, filler granulation molding, finished product conveyor belt discharge four independent stations, wherein the feeding, filler granulation molding and finished product conveyor belt discharge stations are respectively located in the compartment room separated by the explosion-proof isolation wall 1, the feeding station is provided with a quantitative feeding device 2 for powder mixing and discharging; the handling robot manual station is located between the feeding station and the powder filler granulation molding station and in front of the isolation wall, including a three-dimensional space adjustable manipulator 3, the front end of the manipulator 3 is equipped with a reversible pick-up and placement hopper 4, through The material of 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 molding mechanism 6 and a filling mechanism 7 for filling the mold of the mold molding mechanism. The positioning rod 61 in the mold molding mechanism 6 is fixed, and the upper mold 62 and the lower mold 63 move. During molding, the upper mold 62 moves and closes the mold with the lower mold 63 to press and mold. After molding, the lower mold 63 moves down to push the material. The filling mechanism 7 includes a reciprocating filling frame 71. The material receiving station where the filling frame 71 is located is provided with a structural setting for recycling the powder. The front end of the filling frame 71 is provided with a useful The scraper device 8 is used to scrape the residual material and push out the finished product; the discharging end of the mold forming mechanism 6 is provided with a finished product conveyor belt discharging device 9 for outputting the product to the finished product area; it also includes a fire-fighting device, which includes an integral fire hydrant arranged on the top of the compartment room and a local fire hydrant 613 arranged on the equipment. There are two fire hydrants 613, which are symmetrically distributed on both sides of the upper mold and are installed tilted by a connecting frame. When specifically set up, a smoke sensor and an infrared flame sensor are integrated on the top to monitor the fire in real time. The equipment is provided with an infrared flame sensor for driving the local fire hydrant to start. A pressure sensor is provided to detect the water pressure in the pipe network, and temperature sensors are arranged around the water outlet to sense abnormal temperature rise in the environment; each sensor is connected to the central processor built into the fire hydrant control box via wired / wireless means. The processor is equipped with a fire identification algorithm, which can comprehensively analyze multi-sensor signals and generate control instructions; when the smoke concentration exceeds the threshold, the flame spectrum characteristics or the temperature rises suddenly, the central processor immediately triggers the solenoid valve to automatically open the fire hydrant outlet, and at the same time sends the fire alarm location information and equipment status data to the fire command center through the wireless communication module, so as to realize rapid response to the fire and remote coordinated disposal.

[0052] The explosion-proof isolation wall 1 can adopt a conventional structure, for example: a sandwich structure of a steel keel frame filled with fiber cement composite steel plates and rock wool. This structure has the functions of physical barrier, energy attenuation and debris interception, and is flexible in construction and cost-controlled. In addition, the pump station of the hydraulic cylinder and the electrical control box in the entire production line are separately arranged in two other compartments.

[0053] See attached Figure 2The feeding station is located in one of the compartments of the quantitative feeding device 2 for mixing the medicinal powder, and specifically includes a frame 21, a mixing hopper 22 is mounted on the frame 21, and a spiral mixing guide 23 for quantitatively guiding the material is installed in the mixing hopper 22. The spiral mixing guide 23 includes a rotating shaft installed in the mixing hopper 22, and a spiral blade is provided at the bottom of the rotating shaft. 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.

[0054] When taking materials, the pick-up and placement hopper 4 at the front end of the manipulator 3 is located at the discharge port to receive the materials, and the handling manipulator is located between the unloading station and the powder filler granulation molding station and in front of the partition wall. The setting of its position facilitates it to meet the requirements of taking and placing medicines in two separated spaces; the manipulator 3 includes a first manipulator joint 31 set in the horizontal direction, one end of the first manipulator joint 31 is installed on the vertical height adjustment column 32 through a connecting seat guide, and the other end of the first manipulator joint 31 is rotatably installed with another second manipulator joint 33 set in the horizontal direction, and the second manipulator joint The other end of 33 is rotatably mounted with a mounting seat 34, on which a horizontally arranged rotating shaft 35 is provided, and a pick-up and placement hopper 4 is mounted at the end of the rotating shaft 35, wherein the adjustment of the vertical guide is driven by a hydraulic cylinder, and each rotation is driven by a rotating hydraulic cylinder; during the picking and placing process, the hydraulic cylinder drives the connecting seat to vertically lift and lower on the vertical height adjustment column, a rotating hydraulic cylinder drives the first joint 31 of the manipulator to rotate, and another rotating hydraulic cylinder drives the second joint 33 of the manipulator to rotate, and the cooperation of the three can move the pick-up and placement hopper 4 into position to perform the spatial process of picking and adding materials. The structure of the manipulator 3 is as follows Figure 3 shown.

[0055] For further information, see Appendix Figures 4-8 ; The filling mechanism 7 includes a filling frame 71 that is reciprocatingly movable on a workbench 72, a filler 73 is installed in the filling frame 71, and a filling bin is inside the filling frame 71. The opening 74 is larger than the size of the filling bin. A mounting plate 78 is provided on the filling frame 71, and a filler 73 extending into the filling bin is installed on the mounting plate 78. The filler 73 includes a rotating shaft, and a filling fan blade arranged in a circumferential direction is installed at the bottom end of the rotating shaft. The rotation of the rotating shaft is driven by a power drive device 79 at its top; the power drive device 79 is driven by a hydraulic rotary cylinder (torque is transmitted through the top hydraulic system); or an explosion-proof motor + reducer combination (transmitted to the rotating shaft through a coupling and a sprocket); or a gear transmission system (multi-shaft linkage is achieved through a synchronous gear set); or a pneumatic or electric push rod (indirectly drives the swing mechanism to drive the rotating shaft to rotate).

[0056] The reciprocating movement of the filling frame 71 is driven by a push-pull mechanism. The design of the reciprocating movement driven by the push-pull mechanism along the track can reciprocate the filling frame on the material receiving station and the granulation station. The push-pull mechanism includes a push rod 710 located in the middle of the rear end of the filling frame. The movement of the push rod 710 is driven by a push-pull power drive device 711 on both sides. The filling frame 71 is guided and moved by the guide components arranged on both sides. The guide components include a movable guide plate 712 fixed at the edge of the upper end of the filling frame, a guide groove 714 is provided on both sides of the workbench, and a guide block 715 is installed on both sides of the movable guide plate 712 through a connecting plate to cooperate with the guide groove 714. The push scraper device is located in front of the movable guide plate (712) and includes a push scraper for scraping the upper The scraper 1 is used to scrape the flour material at the bottom end of the molding rod, and the scraper 2 is used to scrape the flour material at the upper end of the lower mold. The scraper 1 and the scraper 2 are an integrated structure. The pushing and 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 movable guide plate 712. The two sides of the scraper are installed with guide blocks 2 717 that cooperate with the guide groove guide through the connecting plate. The material of the scraper is rubber, which has the characteristics of wear resistance, good elasticity, and impact resistance. The inclined design of its bottom end face can fit closely with the upper end face of the lower mold, and efficiently complete the scraping and pushing tasks during the reciprocating movement, reduce material leakage and residue, help to keep the mold clean, improve production efficiency and product quality, and reduce maintenance costs. The overall design action is reasonable and the effect is significant.

[0057] The structures of guide block one and guide block two are the same. In order to further reduce friction, a circular guide rod 718 structure is clamped on the inner side of the guide groove. The bottom end surface of guide block one 715 is rotatably mounted with a guide wheel 719. The middle part of the guide wheel 719 is provided with a guide groove 720 that cooperates with the guide wheel 719. A protective cover shell 721 for protecting the guide assembly is installed on the guide groove. The protective cover shell 721 is a sealing groove structure, which is filled with water that reduces friction, maintains humidity to reduce dust, and reduces the guide temperature. The comprehensive structure further ensures that the filling frame only moves smoothly along the preset straight line trajectory, avoids deflection or jamming, and achieves high-precision guidance.

[0058] The front end of the filler 73 is equipped with a push scraper device 8, and an opening 74 is provided on the material receiving station of the workbench 72. The opening 74 is hinged with a structure composed of two downwardly flippable gate plates 75, and the gate plates 75 are driven by their corresponding overturning power drive devices 76. A residual material guide chute 77 is provided below the opening 74. The residual material guide chute 77 is a cone-shaped structure, and the two gate plates are respectively located in the upper end of the residual material guide chute. A feed hopper 5 is set just above the material receiving station; the opening and closing flipping action of the gate plate 75 is driven by the overturning mechanism. Through the structure of the flippable gate plate 75, the excess medicine powder in the filling process can be accurately and timely recovered (when filling, due to the extra medicine powder to ensure work efficiency and consistency of medicine particle specifications, after the mold is not completely filled), after the reciprocating motion of the device is in place, the opening of the sealing plate will quickly collect the residual medicine powder. This process does not require additional human intervention for automatic recovery, which greatly improves the recovery efficiency and avoids the accumulation of residual medicine powder in the filling area. At the same time, the filling operation space is always kept clean and tidy, and there will be no squeezing due to the accumulation of powder, thus ensuring that the filling work can be carried out continuously and smoothly, effectively improving the overall production efficiency.

[0059] For further information, see Appendix Figure 9 、 10 The mold forming mechanism 6 includes an upper mold 62 and a lower mold 63 that fit together and can be guided and moved up and down. A plurality of forming holes 64 are evenly distributed on the upper surface of the lower mold 63. The forming holes 64 are through holes. A fixed support and positioning seat 65 is provided below the lower mold 63. Positioning rods 61 that correspond to the forming holes one by one and extend into the forming holes to cooperate with them are distributed on the upper end surface of the support and positioning seat 65. A machine base 67 with a supporting and erecting function is provided at the bottom of the mold forming mechanism 6. Guide columns 68 are installed at the four corners of the upper end surface of the machine base 67. An upper fixing plate 69 is installed on the top of the guide column 68. A hydraulic cylinder is installed on the upper fixing plate 69. The protruding end of the piston rod of the hydraulic cylinder is installed with an upper mold fixing plate 610. The upper mold 62 is installed on the bottom end surface of the upper mold fixing plate 610. The four corners of the upper mold fixing plate 610 are respectively provided with guide holes that guide and cooperate with the guide columns 68. The bottom end surface of the upper mold 62 is distributed with pressure rods 61 that correspond to the forming holes 64 and are arranged at intervals. 4; The lower mold 63 is guided and installed above the support and positioning seat 65 through the guide rods 611 at the four corners. The support and positioning seat 65 is fixedly mounted on the machine base 67. The support and positioning seat 65 is provided with 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 and positioning seat 65 of the lower mold and the machine base 67, and the lifting and lowering is driven by the hydraulic cylinder below; the positioning rod 61 is vertically arranged on the upper end face of the support and positioning seat 65, and its axis coincides with the axis of the corresponding forming hole 64.

[0060] Furthermore, when machining the forming holes 64, the pressure rod 614, and the positioning rod 61 in the structure, multiple holes can be machined in a single clamping operation, minimizing the impact of clamping errors on coaxiality and perpendicularity. The pressure rod 614 and the positioning rod 61 are tightly fitted with the forming holes 64, ensuring that no powder leaks out. Therefore, certain requirements for their precision are met. To achieve these requirements, for example, high-precision machining equipment is used. For the molds requiring high precision in this application, the dimensional tolerances of the positioning rod diameter and the forming hole diameter can be controlled within ±0.005mm. Furthermore, during the machining process, the positioning rod diameter and the forming hole diameter are measured multiple times using precision measuring tools such as micrometers and internal diameter dial indicators. Based on the measurement results, machining parameters are adjusted promptly, and areas with significant dimensional deviations are corrected to ensure that the final dimensions meet design requirements. For the positioning rods, processes such as precision turning, lapping, and grinding can be used to reduce surface roughness. For example, the surface roughness of the positioning rods 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.

[0061] See attached Figure 11 The discharge end of the mold forming mechanism 6 is provided with a material guide trough, and the finished product conveyor belt discharging device 9 includes a finished product conveyor belt 91, the feeding end of the finished product conveyor belt 91 is arranged below the material guide trough 10, and the finished product conveyor belt 91 is installed with a material receiving frame 92 for circulating material receiving at intervals, and 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 groove 931 which is inclined and directly opposite to the discharge end of the finished product conveyor belt 91, which is inclined downward and arranged toward the discharge end of the finished product conveyor belt 91, and an inclined filter mesh groove 932 is arranged below the guide groove 931, and the inclination direction of the filter mesh groove 932 is opposite to the inclination direction of the guide groove 931. A slag receiving box is provided below the filter mesh groove 932, and a finished product receiving box is provided at the discharge end of the filter mesh groove 932.

[0062] The working process of the above structure is:

[0063] Feeding at the feeding station: The robot moves the pick-up and placement hopper 4 to the bottom of the mixing hopper 22 at the feeding station, and 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 arranged at the bottom of the rotating shaft rotate synchronously therewith. During the rotation process, the spiral blades generate axial thrust on the material in the mixing hopper 22, and transport 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 provided with a sealing plate and a discharge gap is left with the discharge port, the material is continuously squeezed out from the discharge gap under the continuous push of the spiral blades, thereby realizing the discharge process.

[0064] Filler granulation molding: First, after the hopper 4 receives a certain amount of material, it is moved in space by the manipulator to rotate it to the feed hopper 5 above the powder filler granulation molding station, and the material falls from the feed hopper 5 into the filling bin of the filling frame 71. The push-pull power drive device 11 (push-pull cylinder) on both sides of the workbench 1 starts to receive the hydraulic oil supply, pushing the filling frame 71 to move. At the same time, the movable guide plate 712 above it moves synchronously with the frame, and the guide blocks 715 on both sides of the movable guide plate 712 also move along the guide groove 714 until the filling frame 2 moves from the material receiving station to the powder filler granulation molding station;

[0065] Then the filling mechanism 7 performs filling: the power transmission device 79 (hydraulic rotary cylinder) located at the end of the rotating shaft of the filler 73 is started, and the rotation of the rotating shaft is transmitted to the filling blades, so that the filling blades rotate smoothly according to a certain trajectory in the filling bin. During the rotation process, the filling blades push and stir the powder in the silo, allowing the powder to circulate in the silo. As the filling blades continue to rotate, the powder continuously falls into the forming hole of the mold on the granulation station (in this process, it has been tested in advance, and the operator will closely observe the filling situation of the powder in the forming hole of the mold, pre-control the sufficient filling time or detect it through the detection device). When the forming hole is filled with powder, a stop signal is immediately issued, and the hydraulic system immediately stops supplying oil to the hydraulic rotary cylinder. The hydraulic rotary cylinder stops moving, and the rotating shaft and the filling blades also stop rotating, completing a filling operation;

[0066] Material recovery after filling: Start the push-pull power drive device 716 (hydraulic cylinder) to move, the cylinder piston slowly retracts, and drives the filling frame 71 from the granulation station to the material receiving station. During the return process, the front end of the filling frame 71 is equipped with a push scraper to scrape the powder remaining on the surface of the mold in the granulation area to the feeding station. After the station, the overturning power transmission device 76 is started, driving the two gates 75 to open, so that the excess powder remaining in the filling bin and the powder scraped by the push scraper fall into the guide chute through the opening under the action of gravity for recovery. The recovered powder can be put into use again. After the powder falls for a certain period of time, the overturning power transmission device 14 starts the gate to close and the next round of material receiving operation is carried out;

[0067] The upper die 62 is guided and moved by the hydraulic cylinder. During the process, the guide movement is respectively coordinated with the guide pillars 68 through the guide holes at the four corners of the upper die fixing plate 69. The pressure rod 614 is located in the forming hole 64 to cooperate with the powder in the forming hole 64. The upper die drives the hydraulic cylinder to drive the upper die to slowly press down until the bottom end surface of the upper die and the upper end surface of the lower die are closed. During the process, a lower pressure is first pre-pressed to make the powder initially dense and expel some air, and then the pressure is quickly increased to perform the main pressure molding. During this period, the gas is completely exhausted through a short pressure relief-pressure holding cycle. Finally, the powder is fully solidified after holding the pressure at high pressure for a certain period of time to complete the molding. After that, the upper die rises and the lower die continues to descend to release the product. At this time, the push-pull power drive device 716 (hydraulic cylinder) is started to drive the push scraper to move forward, and the molded medicine particles are smoothly pushed to the discharge port position, and the discharge operation is successfully completed.

[0068] After discharging, the scraper is pushed back to reset. During the return reset process, the upper end surface of the lower mold and the excess powder on the end of the pressure rod of the upper mold can be cleaned.

[0069] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of 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 implementation methods that can be understood by those skilled in the art.

[0070] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.

Claims

1. A multi-space isolation explosion-proof fireworks powder press granulation automatic production line, characterized by , including a feeding station, a handling machine manual station, a powder filling and granulating molding station, and a finished product conveyor belt discharging station arranged in sequence, wherein the unloading station, the filling granulating molding station and the finished product conveyor belt discharging station are respectively located in a compartment separated by an explosion-proof isolation wall (1); The feeding station is provided with a quantitative feeding device (2) for mixing and discharging medicine powder; The handling robot manual station includes a three-dimensionally adjustable manipulator (3), and a reversible pick-up and place hopper (4) is installed at the front end of the manipulator (3), which is used to dynamically adjust the three-dimensional space to put the material from the unloading station into the feed hopper (5) for filler granulation molding; The powder filler granulation molding station includes a mold molding mechanism (6) and a filling mechanism (7) for filling the mold of the mold molding mechanism. The mold molding mechanism (6) includes an upper mold (62) and a lower mold (63) that can move relatively, and a positioning rod (61) for fixing. The filling mechanism (7) includes a reciprocating filling frame (71), and a pushing scraper device (8) is provided at the front end of the filling frame (71). The material receiving station where the filling frame (71) is located is provided with a powder recovery structure. The discharging end of the mold forming mechanism (6) is provided with a finished product conveyor belt discharging device (9) for discharging the product to the finished product area. It also includes fire-fighting devices installed on the top of the compartment and on the equipment.

2. The multi-space isolation explosion-proof fireworks powder press granulation automatic production line according to claim 1 is characterized in that The quantitative feeding device (2) includes a mixing hopper (22) and a spiral mixing guide (23) installed therein.

3. The multi-space isolation explosion-proof fireworks powder press granulation automatic production line according to claim 1 is characterized in that The manipulator (3) includes multiple joints and a height adjustment mechanism, and a pick-up and place hopper (4) is installed at the end.

4. The multi-space isolation explosion-proof fireworks powder press granulation automatic production line according to claim 1 is characterized in that The filling mechanism (7) includes a reciprocating filling frame (71), a filler (73) is provided in the filling frame (71), and a push scraper device (8) is provided at the front end of (73); the material receiving station is provided with an openable and closable gate structure and a residual material guide trough (77).

5. The multi-space isolation explosion-proof fireworks powder press granulation automatic production line according to claim 4 is characterized in that The filler (71) includes a rotating shaft and a filler blade arranged at the bottom thereof.

6. The multi-space isolation explosion-proof fireworks powder press granulation automatic production line according to claim 4 is characterized in that The reciprocating movement of the filling frame (71) is driven by a push-pull mechanism and is provided with a guide assembly.

7. The multi-space isolation explosion-proof fireworks powder press granulation automatic production line according to claim 1 is characterized in that The mold forming mechanism (6) includes an upper mold (62) and a lower mold (63) that cooperate with each other and can be guided and moved up and down. The lower mold (63) is evenly distributed with a plurality of spaced forming holes (64). The lower mold (63) is distributed with positioning rods (61) that correspond to the forming holes one by one and extend into the forming holes to cooperate with them.

8. The multi-space isolation explosion-proof fireworks powder press granulation automatic production line according to claim 7 is characterized in that The upper mold (62) and the lower mold (63) are driven by hydraulic cylinders to realize mold closing and ejection actions respectively.

9. The multi-space isolation explosion-proof fireworks powder press granulation automatic production line according to claim 1 is characterized in that The finished product conveyor belt discharging device (9) comprises a finished product conveyor belt (91) and a filtering and guiding assembly (93) for outputting and screening finished products.

10. The multi-space isolation explosion-proof fireworks powder press granulation automatic production line according to claim 9 is characterized in that The filtering and guiding component (93) includes a guide groove (931) and a filter mesh groove (932), which are respectively used for guiding materials and separating slag and finished products.

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