A reinforcing rib auxiliary forming device for a high-load combined plastic storage box

Abstract

The application relates to the technical field of injection molding, in particular to a reinforcing rib auxiliary forming device for a high-load combined plastic storage box, which comprises an injection molding machine body, a fixed mold fixedly arranged in the injection molding machine body, a movable mold movably installed in the injection molding machine body and matched with the fixed mold, a support frame fixedly installed on the injection molding machine body and corresponding to the top of the fixed mold, a back-shaped cleaning assembly arranged in the support frame and used for covering type air blowing cleaning of residual impurities in a rib groove of the fixed mold and the movable mold, the back-shaped cleaning assembly comprising a fixed gear, a moving plate and a moving block, and the back-shaped cleaning, swinging diffusion, storage and discharge, and air blowing discharge are organically cooperated to realize complete injection molding automatic circulation from cooling and mold opening to expose the rib groove, covering type air blowing cleaning of the rib groove U-shaped track, uniform spraying of the swing type release agent on the rib groove surface, waste liquid collection and recovery, automatic retreat of the collection disc, synchronous scraping and cleaning of the discharge port and smooth ejection of the finished product storage box.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and in particular to a reinforcing rib-assisted molding device for a high-load-bearing modular plastic storage box. Background Technology

[0002] In the field of injection molding production of high-load modular plastic storage boxes, these boxes are typically used in scenarios such as industrial parts turnover, agricultural product storage and transportation, and cold chain logistics, requiring high structural strength and load-bearing capacity. To improve the bending and torsional resistance of the box without significantly increasing wall thickness and material costs, the side walls and bottom of the storage box are often designed with a dense, crisscrossing reinforcing rib structure. These reinforcing ribs are integrally injection molded with the main body of the box, which can effectively distribute external loads while reducing weight, and are key structural elements that determine the overall load-bearing capacity and service life of the storage box.

[0003] However, the narrow, deep, and crisscrossing geometry of the reinforcing rib grooves makes them the most concentrated area of ​​defects in injection molding. Venting is extremely difficult in the deep grooves. If the gas cannot be discharged in time when the melt is filled at high speed, it will form trapped gas, burn or contain air bubbles, directly weakening the density of the reinforcing ribs. If the residual mold release agent from the previous cycle is charred or plastic debris blocks the tiny venting gaps at the end of the groove, it will exacerbate the trapped gas defects, causing pores or even carbonized spots inside the reinforcing ribs, significantly reducing the product's load-bearing capacity. In addition, the significant difference in thickness between the reinforcing ribs and the main body of the housing leads to uneven cooling and shrinkage, resulting in stress concentration at the root. If the mold release agent coating is uneven, with insufficient spraying at the bottom of the groove and excessive accumulation at the inlet, it will cause a severely uneven distribution of demolding resistance. The pulling force generated by localized film adhesion and the internal stress from cooling can easily cause the root of the reinforcing ribs to be strained, deformed, or broken, resulting in a large number of scraps and forcing frequent shutdowns to clean the mold.

[0004] Meanwhile, a large amount of impurities and residual mold release liquid blown from the mold will pollute the production environment if they fall directly into the equipment. Waste liquid seeps into the gaps and causes corrosion. Waste material mixed into the raw materials of the next cycle will affect the purity of the product. This will lead to product damage or blockage of the discharge port, interrupting continuous production. The above series of interconnected technical problems seriously restrict the further improvement of the injection molding quality, production efficiency and automation level of the reinforcing ribs of the high-load storage box. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides a reinforcing rib-assisted molding device for a high-load-bearing modular plastic storage box.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a reinforcing rib auxiliary molding device for a high-load combined plastic storage box, comprising an injection molding machine body, a fixed mold fixedly disposed inside the injection molding machine body, a movable mold that cooperates with the fixed mold being movably installed inside the injection molding machine body, a support frame fixedly installed on the injection molding machine body at the top position corresponding to the fixed mold, and a U-shaped cleaning component disposed inside the support frame for covering and blowing clean the residual impurities in the rib grooves of the reinforcing ribs formed on the fixed mold and the movable mold;

[0007] The U-shaped cleaning assembly includes a fixed gear, a moving plate, and a moving block. The cleaning nozzles in the U-shaped cleaning assembly move along a U-shaped trajectory between the fixed mold and the moving mold to perform covering air blowing.

[0008] The moving block is equipped with a swing diffusion assembly, which drives the cleaning nozzle to swing back and forth while moving along a U-shaped trajectory; the swing diffusion assembly includes an arc-shaped connecting rod and an L-shaped drive arm;

[0009] The injection molding machine body has a discharge port inside, which is equipped with a material collection and discharge assembly to collect impurities and mold release agent liquid falling from the rib grooves of the fixed mold and the moving mold. The material collection and discharge assembly includes a collection tray, an arc-shaped connecting rod, and a movable block. When cleaning impurities and spraying mold release agent in the rib grooves, the collection tray is located at the center below the mold closing position of the fixed mold and the moving mold to receive the falling impurities and mold release agent liquid. When the injection molding machine body ejects the finished product from the storage box, the collection tray exits the discharge port to make way for the discharge.

[0010] The movable block is also equipped with a blower feeding assembly, which includes an air outlet and a blower tube. When the movable block drives the collection tray out of the feeding port, the blower airflow generated by the air outlet will collect the impurities and release fluid in the collection tray.

[0011] As a preferred embodiment of the present invention, the loop-shaped cleaning assembly further includes a drive motor. Four fixed gears are movably connected inside the support frame via a rotating shaft. A chain is movably connected to the outer periphery of the fixed gears. The chain has a loop-shaped structure. The drive motor is fixedly installed on the side of the support frame away from the moving mold via a motor cover. The output end of the drive motor is fixedly installed on the rotating shaft of one of the fixed gears. Positioning rods are fixedly installed at both ends inside the support frame. Each positioning rod is movably connected to a positioning block. A moving plate is fixedly installed between the positioning blocks. The moving blocks slide within the moving plate.

[0012] The inner side of the motion plate is provided with a T-shaped groove, and a T-shaped slider is slidably connected in the T-shaped groove. The motion block is fixedly installed between the T-shaped sliders. A driving rod is fixedly installed at the center of the side of the motion block near the chain. The driving rod is fixedly installed on the chain link. An arc-shaped connecting rod is fixedly installed at the center of the side of the motion block away from the chain.

[0013] As a preferred embodiment of the present invention, the injection molding machine body has a melting frame fixedly installed at the top of the end away from the moving mold. The melting frame injects molten plastic into the fixed mold and the moving mold after mold closing. The swaying diffusion assembly also includes an arc-shaped swaying plate. The bottom of the arc-shaped connecting rod is movably connected to the arc-shaped swaying plate through a rotating seat. The arc-shaped swaying plate has an arc-shaped swaying groove. A rotary motor is fixedly installed at the bottom of the arc-shaped connecting rod. An L-shaped drive arm is fixed at the output end of the rotary motor. The size of the L-shaped drive arm matches the arc-shaped swaying groove, and the L-shaped drive arm moves within the arc-shaped swaying groove.

[0014] An arc-shaped cleaning seat is fixedly installed at the bottom of the arc-shaped swaying plate. Several cleaning nozzles for blowing air into the grooves are fixedly installed on both sides of the arc-shaped cleaning seat. A spray ring is fixedly installed at the bottom of the arc-shaped swaying plate. Several spray nozzles for spraying release agent into the moving mold and the fixed mold are fixedly installed on both sides of the spray ring. The spray ring is located on the outside of the arc-shaped cleaning seat.

[0015] As a preferred embodiment of the present invention, the injection molding machine body has a receiving hole at the bottom of the end away from the fixed mold. The receiving and discharging assembly also includes a pushing base plate. The two ends of the pushing base plate are movably connected to hinge plates. The top of the hinge plates is movably connected to the bottom ends of the collecting tray through hinges. The pushing base plate is located at the bottom of the collecting tray. An arc-shaped connecting rod is fixedly installed on the pushing base plate at the end near the receiving hole. Several pushing rollers are evenly installed on the end of the collecting tray near the fixed mold. An L-shaped support rod is fixedly installed on each of the pushing base plates. A limiting post for supporting and limiting the collecting tray is fixedly installed on the top of the L-shaped support rod. The limiting post is located at the bottom ends of the collecting tray. A scraping brush is fixedly installed on the pushing base plate at the end near the fixed mold. The scraping brush is used to clean impurities falling into the bottom of the discharge port. Discharge ports are opened at both ends of the discharge port. The scraping brush discharges the impurities at the bottom of the discharge port through the discharge ports.

[0016] The collecting tray has a blower seat fixedly installed at the top of the end near the fixed mold. Several air outlets are evenly installed on the blower seat on the side away from the push roller. A collection box is fixedly installed at the bottom of the collecting tray at the end away from the blower seat, and a collection groove is opened at the bottom of the collecting tray at the end near the collection box. The airflow generated by the air outlets is used to collect the impurities and release liquid collected in the collecting tray into the collection box through the collection groove.

[0017] As a preferred embodiment of the present invention, the blower feeding assembly further includes a servo motor. A base plate is fixedly installed inside the injection molding machine body. A servo motor is fixedly installed at the bottom of the base plate at the end away from the feeding port. A screw is fixedly installed at the output end of the servo motor. A movable block is threaded through the screw. Arc-shaped connecting rods are fixedly installed at both ends of the movable block. The arc-shaped connecting rods and the collecting tray are movable in the receiving holes. A blower is fixedly installed at the top of the base plate at the end away from the collecting tray. A piston plate is movably arranged inside the blower. A movable plate is fixedly installed on the top of the movable block. A piston rod is fixedly installed on the top of the movable plate. The piston rod passes through the blower and is fixedly connected to the piston plate.

[0018] The base plate has a base groove, the movable plate moves through the base groove, a limit guide rail is fixedly installed at the bottom of the base plate, the movable block moves on the limit guide rail, and an air inlet pipe and an air outlet pipe are fixedly installed at the end of the blower away from the movable plate, and the air outlet pipe is connected to the blower seat.

[0019] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0020] 1. In this invention, the drive motor in the loop-shaped cleaning assembly drives four fixed gears and a loop-shaped chain to move cyclically, causing the rod to move along a rectangular trajectory with the chain links. Simultaneously, two sets of orthogonal sliding pairs, consisting of a positioning rod and positioning block, and a T-shaped groove and a T-shaped slider, precisely convert the rectangular drive trajectory of the chain into the precise movement of the cleaning nozzle along a U-shaped trajectory between the fixed and moving molds. This ensures that the blowing airflow completely covers the entire rib groove area, with a stable trajectory and no blind spots, significantly improving cleaning efficiency and consistency. It can thoroughly remove residual plastic debris and mold release agent residue from the previous injection molding cycle. Bottom blowing eliminates defects such as insufficient material and shrinkage cavities in reinforcing ribs at the source, ensuring complete filling conditions for each injection molding, improving structural strength and yield; after cleaning, the surface of the rib groove is clean, and the melt flows smoothly into the depth, ensuring that the reinforcing rib and the box are integrally formed in one go; the positioning rod and positioning block, T-shaped slide and T-shaped slider are all surface contact guides, with good rigidity and high precision, can withstand cyclic inertial forces, and have no jamming or shaking. The components are built into a compact rigid frame, extending service life; dry blowing has no secondary pollution, replaces manual cleaning, shortens the cycle, and achieves efficient and green mold maintenance.

[0021] 2. In this invention, the L-shaped drive arm is continuously rotated within the arc-shaped swaying groove by a rotary motor in the swaying diffusion assembly. This causes the arc-shaped swaying plate to reciprocate around the rotating seat, and the swaying is synchronously transmitted to the arc-shaped cleaning seat and spray ring. This causes the cleaning nozzle and spray head to move along a U-shaped trajectory while simultaneously undergoing a reciprocating sway perpendicular to the direction of movement, forming a composite motion mode of movement and swaying. The compressed air ejected from the cleaning nozzle forms a dynamic sweeping jet that sways left and right, impacting the sidewalls, bottom, and narrow corners of the rib groove at multiple angles. This effectively removes stubborn impurities and mold deposits, restoring the rib groove to an ideal clean state and providing sufficient assurance for melt filling. After cleaning, the spray head sprays the release agent droplets evenly onto the inner wall of the rib groove at multiple angles using the same swaying motion, eliminating accumulation or missed spraying, forming a uniform coating film without dead corners, reducing demolding resistance, preventing reinforcing ribs from being pulled and deformed, reducing oil stains and dimensional deviations caused by excessive accumulation, improving surface quality and demolding smoothness, reducing mold maintenance frequency, and maintaining stable demolding performance during continuous injection molding.

[0022] 3. In this invention, the servo motor drives the screw to rotate in the material receiving and discharging assembly, which in turn drives the movable block, the arc-shaped connecting rod, and the push base plate to move back and forth. With the cooperation of the push roller and the inner wall of the discharge port, as well as the coordinated rotation of the front and rear hinge plates, a complete sequence of actions is achieved, including horizontal advancement of the collecting tray, smooth ascent along the inner wall to the receiving position at the bottom of the fixed mold, descent along the inner wall, and horizontal exit from the receiving hole. The action transitions are automatically completed by pure mechanical linkage with precise timing. The collecting tray is accurately delivered to the bottom of the fixed mold to receive impurities and excess mold release liquid blown off from the rib groove, reducing waste splashing and pollution, improving environmental cleanliness, and preventing waste from mixing into the raw materials of the next cycle. Before ejection, the collecting tray reliably makes way to open the discharge port, allowing the finished product to fall without obstruction and avoiding collisions and deformation. The scraping brush at the front end of the push base plate simultaneously scrapes away impurities on the bottom surface of the discharge port during exit and discharges them through the discharge port, preventing jamming and scratching of the product, ensuring smooth material discharge and surface quality, and improving the reliability of continuous injection molding.

[0023] 4. In this invention, the backward movement of the movable block in the blower feeding assembly drives the movable plate and piston rod, which in turn drives the piston plate to compress air in the blower. Combined with the automatic switching of the one-way valves in the inlet and outlet pipes, this achieves air intake and exhaust circulation. Simultaneously with the collection tray exiting the feeding port, a high-speed directional airflow generated at the outlet blows from the front to the rear of the collection tray, thoroughly driving the impurities and residual release liquid from the grooves on the tray surface into the collection trough and then into the collection box, completing self-cleaning and material recovery. The piston-type blower is driven by the mechanical energy of the yielding motion, eliminating the need for an additional compressed air source or independent blower, achieving passive, real-time cleaning with a compact and energy-saving structure. The purely mechanical design of the one-way valve ensures uninterrupted automatic switching between intake and exhaust, guaranteeing a stable high-pressure airflow each time it retracts, and reliable intake and reset during forward movement. This results in high reliability, fewer potential failure points, and long-term high-frequency stability without electromagnetic valves or other electronic control components. The simultaneous cleaning and exiting process avoids material drying and blockage, as well as liquid accumulation and contamination. Unified recycling facilitates centralized processing, improving environmental protection and waste management.

[0024] 5. In this invention, the material receiving and unloading components and the blower unloading components are integrated into a time-linked composite execution system. The same servo motor achieves continuous and automated four-step actions in a single forward and backward stroke: rising and receiving the collection tray, lowering and clearing, blower cleaning, and waste recycling. During cleaning and spraying, the servo motor rotates forward, pushing the base plate to move the collection tray forward. After the roller contacts the inner wall of the unloading port and is restricted, the hinge plate rotates, and the collection tray rises smoothly along the inner wall to directly below the fixed mold. Impurities and release fluid blown off from the rib grooves fall directly into the tray without overflowing or contaminating the mold closing area. After injection molding is completed, the servo motor reverses, and the collection tray, under gravity... Guided by rollers, the material descends and resets along the inner wall, settling onto the limiting post and then pushing the base plate horizontally out of the discharge port, opening an unobstructed channel for the finished product to be ejected. During the withdrawal process, the moving block synchronously drives the piston rod to compress the air in the blower, and the one-way valve automatically switches, with high-pressure airflow spraying out from the air outlet and sweeping across the disc surface from front to back, driving impurities and mold release liquid into the collection tank and falling into the collection box, achieving immediate cleaning and recycling. The entire process is driven by a single drive with no power switching, and the timing is precise and compact, reducing auxiliary time and eliminating mold contamination and finished product scratches caused by waste residue. It provides an efficient and clean waste treatment closed loop for continuous and stable injection molding of the high-load storage box reinforcement ribs.

[0025] 6. In this invention, through the organic and coordinated operation of four major components—circular cleaning, oscillating diffusion, material collection and discharge, and blower unloading—a complete automated injection molding cycle is achieved, from high-pressure injection of molten plastic into the rib grooves, cooling and mold opening to expose the rib grooves, U-shaped trajectory covering blower cleaning of the rib grooves, oscillating release agent uniformly sprayed onto the rib groove surface, waste material and waste liquid collection and recycling, automatic retraction of the collection tray, synchronous scraping and cleaning of the unloading port, to smooth ejection and unloading of the finished product from the storage box. The timing of each component's actions is precisely scheduled by the same control system. Cleaning and spraying are completed simultaneously after mold opening, allowing the rib grooves to return to a clean and uniformly coated state ready for injection molding in the shortest possible time, minimizing mold opening downtime. The collection tray's collection and mold cleaning work closely together, ensuring real-time waste recycling without overflow. The process of yielding and exhausting is completed instantly before ejection, ensuring unobstructed material discharge channels. The entire process is fast-paced and seamless, with no interference or waiting gaps, minimizing auxiliary time and significantly improving injection molding cycle time. The three auxiliary processes of cleaning, spraying, and recycling are fully automated, eliminating the uncertainty and safety hazards of human operation, and ensuring high consistency and repeatability of process parameters such as rib groove cleanliness, mold release agent coating amount, and waste recycling rate. Each component is highly integrated into the injection molding machine body, sharing a drive source and transmission path, reducing the volume expansion and maintenance complexity caused by decentralized independent devices. The overall layout is compact and occupies a small area, making it easy to embed in existing injection molding production lines and improve the efficiency, cleanliness, and yield of storage box injection molding production. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the injection molding machine body of the present invention;

[0028] Figure 3 This is a schematic diagram of the support frame of the present invention;

[0029] Figure 4 This is a schematic diagram of the connection structure of the positioning rod of the present invention;

[0030] Figure 5 This is a schematic diagram of the connection structure of the rotary motor of the present invention;

[0031] Figure 6 This is a schematic diagram of the material discharge port structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the base plate of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the base plate of the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of the collection tray of the present invention.

[0035] The components are as follows: 10. Injection molding machine body; 11. Fixed mold; 12. Moving mold; 13. Melting rack; 14. Storage hole; 15. Discharge port; 16. Unloading port; 20. Support frame; 21. Fixed gear; 22. Chain; 23. Motor cover; 24. Drive motor; 25. Drive rod; 30. Positioning rod; 31. Positioning block; 32. Moving plate; 33. T-shaped slide; 34. T-shaped slider; 35. Moving block; 36. Arc-shaped connecting rod; 37. Rotating seat; 40. Rotary motor; 41. L-shaped drive arm; 42. Arc-shaped sway plate; 43. Arc-shaped sway groove; 44. Arc-shaped cleaning seat. ; 45. Cleaning nozzle; 46. Spray ring; 47. Spray head; 50. Push base plate; 51. Hinge plate; 52. Collection tray; 53. Push roller; 54. L-shaped support rod; 55. Limiting post; 56. Scraper brush; 57. Storage slot; 58. Storage box; 59. Arc-shaped connecting rod; 60. Base plate; 61. Base groove; 62. Servo motor; 63. Screw; 64. Movable block; 65. Limiting guide rail; 66. Movable plate; 70. Blower; 71. Piston plate; 72. Piston rod; 73. Air inlet pipe; 74. Air outlet pipe; 75. Blower seat; 76. Air outlet. Detailed Implementation

[0036] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0037] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a reinforcing rib auxiliary molding device for a high-load-bearing modular plastic storage box includes an injection molding machine body 10. A fixed mold 11 is fixedly installed inside the injection molding machine body 10, and a movable mold 12 that cooperates with the fixed mold 11 is movably installed inside the injection molding machine body 10. A support frame 20 is fixedly installed on the injection molding machine body 10 at the top position corresponding to the fixed mold 11. A U-shaped cleaning component is provided inside the support frame 20 for covering and blowing clean the residual impurities in the rib grooves of the reinforcing ribs formed on the fixed mold 11 and the movable mold 12. The U-shaped cleaning component includes a fixed gear 21, a moving plate 32, and a moving block 35. The cleaning nozzle 45 provided in the U-shaped cleaning component moves along a U-shape between the fixed mold 11 and the movable mold 12. The trajectory movement is used for covering and blowing air. The loop cleaning component also includes a drive motor 24. Four fixed gears 21 are movably connected inside the support frame 20 through a rotating shaft. A chain 22 is movably connected to the outer periphery of the fixed gears 21. The chain 22 has a loop structure. The drive motor 24 is fixedly installed on the side of the support frame 20 away from the moving mold 12 through a motor cover 23. The output end of the drive motor 24 is fixedly installed on the rotating shaft of one of the fixed gears 21. Positioning rods 30 are fixedly installed at both ends inside the support frame 20. Positioning blocks 31 are movably connected through the positioning rods 30. The moving plate 32 is fixedly installed between the positioning blocks 31. The moving block 35 slides in the moving plate 32.

[0038] The inner side of the motion plate 32 is provided with a T-shaped groove 33, and a T-shaped slider 34 is slidably connected in the T-shaped groove 33. The motion block 35 is fixedly installed between the T-shaped sliders 34. A driving rod 25 is fixedly installed at the center of the side of the motion block 35 near the chain 22. The driving rod 25 is fixedly installed on the chain link of the chain 22. An arc-shaped connecting rod 36 is fixedly installed at the center of the side of the motion block 35 away from the chain 22.

[0039] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5When the drive motor 24 is running, the four fixed gears 21 drive the loop chain 22 to move cyclically along a rectangular loop. A driving rod 25 is fixed at the center of the moving block 35 near the center of the chain 22. The driving rod 25 is fastened to a link of the chain 22, so when the chain 22 runs, the driving rod 25 moves along the chain link in a rectangular trajectory. Simultaneously, positioning blocks 31 are movably fitted onto the positioning rods 30 at both ends inside the support frame 20. A moving plate 32 is fixedly installed between the two positioning blocks 31, allowing the moving plate 32 to reciprocate only along the axis of the positioning rods 30. A T-shaped groove 33 is provided on the inner side of the moving plate 32, allowing the T-shaped slider 34 to slide within the groove. The moving block 35 is fixed between the T-shaped sliders 34, allowing the moving block 35 to slide freely within the moving plate 32 in a direction perpendicular to the positioning rods 30. Thus, the two sets of positioning rods 30 and positioning blocks 31, and T-shaped grooves 33 and T-shaped sliders 34, work together to achieve the desired effect. The orthogonal sliding pair constrains the moving block 35 within a plane, allowing it to move longitudinally with the moving plate 32 and slide laterally along it. When the driving rod 25 moves in a rectangular motion with the chain 22, its motion is decomposed into two vertical linear motion components, which are smoothly transmitted to the moving block 35 and the arc-shaped connecting rod 36. This accurately transforms the rectangular drive trajectory of the chain 22 into the U-shaped working trajectory of the cleaning nozzle 45, significantly reducing manufacturing costs and failure rates. The positioning block 31, positioning rod 30, T-shaped groove 33, and T-shaped slider 34 are all surface contact guides, offering high rigidity and motion accuracy. They can withstand the inertial forces generated during cyclic cleaning, ensuring long-term operation without jamming or shaking, and guaranteeing accurate purging positions. Furthermore, the moving plate 32, positioning rod 30, and other components are built into the support frame 20, forming a compact rigid frame. The overall structure is stable and reliable, effectively extending the service life of the device.

[0040] The cleaning nozzle 45 at the lower end of the arc-shaped connecting rod 36 moves along a fixed U-shaped trajectory within the mold opening area between the fixed mold 11 and the moving mold 12. Specifically, it descends vertically to the depth of the reinforcing rib groove, and then, while maintaining its height, moves horizontally along the mold width, allowing the cleaning airflow of the nozzle 45 to sweep across each rib groove in sequence, completing a full-coverage cleaning of the entire rib groove area. Finally, it rises from the other side of the mold and exits. The U-shaped trajectory completely covers all the reinforcing rib forming grooves, with no blind spots in movement. It can thoroughly blow away residual plastic debris, mold release agent residue, dust, and other impurities from the previous injection molding cycle, eliminating defects such as localized material shortages, shrinkage cavities, or incomplete filling of the reinforcing ribs caused by foreign objects in the rib grooves. This significantly improves the reinforcing ribs of the storage box. The dry air cleaning method ensures the integrity and dimensional consistency of the mold, thereby significantly enhancing the structural strength and load-bearing capacity of the product. Automated, comprehensive air-blowing cleaning replaces manual cleaning, reducing auxiliary time after mold opening, shortening the injection molding cycle, and directly improving production efficiency. Simultaneously, the dry air-blowing method does not introduce any liquid cleaning agents, avoiding secondary pollution to the mold and the environment. The cleaning process leaves no chemical residue, making it more environmentally friendly and safer, and eliminating the need for subsequent drying processes, achieving efficient and green mold maintenance. Furthermore, the stable U-shaped trajectory ensures that each cleaning action is completely consistent, with no omissions or excessive repetition, guaranteeing cleaning quality while saving compressed air consumption, effectively reducing operating energy consumption, and decreasing the frequency of operators entering hazardous areas, thus improving operational safety.

[0041] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The moving block 35 is equipped with a swing diffusion assembly, which drives the cleaning nozzle 45 to swing back and forth while moving along a U-shaped trajectory. The swing diffusion assembly includes an arc-shaped connecting rod 36 and an L-shaped drive arm 41. A melting frame 13 is fixedly installed on the top of the injection molding machine body 10 at the end away from the moving mold 12. The melting frame 13 injects molten plastic into the fixed mold 11 and the moving mold 12 after mold closing. The swing diffusion assembly also includes an arc-shaped swing plate 42. The bottom of the arc-shaped connecting rod 36 is movably connected to the arc-shaped swing plate 42 through a rotating seat 37. The arc-shaped swing plate 42 has an arc-shaped swing groove 43. A rotary motor 40 is fixedly installed on the bottom of the arc-shaped connecting rod 36. An L-shaped drive arm 41 is fixed at the output end of the rotary motor 40. The size of the L-shaped drive arm 41 matches the arc-shaped swing groove 43, and the L-shaped drive arm 41 moves in the arc-shaped swing groove 43.

[0042] An arc-shaped cleaning seat 44 is fixedly installed at the bottom of the arc-shaped swaying plate 42. Several cleaning nozzles 45 for blowing air into the rib grooves are fixedly installed on both sides of the arc-shaped cleaning seat 44. A spray ring 46 is fixedly installed at the bottom of the arc-shaped swaying plate 42. Several spray nozzles 47 for spraying release agent into the moving mold 12 and the fixed mold 11 are fixedly installed on both sides of the spray ring 46. The spray ring 46 is located on the outside of the arc-shaped cleaning seat 44. The arc-shaped cleaning seat 44 is connected to an external blower, while the spray ring 46 is connected to an external release agent liquid storage cylinder.

[0043] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The swaying diffusion assembly is located below the moving block 35. An arc-shaped swaying plate 42 is movably connected to the bottom of the arc-shaped connecting rod 36 via a rotating seat 37. An arc-shaped swaying groove 43 is formed on the arc-shaped swaying plate 42. A rotary motor 40 is also fixedly installed at the bottom of the arc-shaped connecting rod 36. An L-shaped drive arm 41 is fixed to the output end of the rotary motor 40. The end of the L-shaped drive arm 41 extends into the arc-shaped swaying groove 43, and its dimensions precisely match the groove width. When the moving block 35 moves the arc-shaped connecting rod 36 along a U-shaped trajectory under the drive of the U-shaped cleaning assembly, the rotary motor 40 starts synchronously, driving the L-shaped drive arm 41 to perform continuous rotational motion. During rotation, the end of the L-shaped drive arm 41 slides along the inner wall of the arc-shaped swaying groove 43 and actuates the arc-shaped swaying plate 42. Since the arc-shaped connecting rod 36 and the arc-shaped swaying plate 42 are connected via the rotating seat 37, the arc-shaped swaying plate 42 oscillates back and forth around the rotating seat 37 under the actuation of the L-shaped drive arm 41. This swinging motion is synchronously transmitted to the arc-shaped cleaning seat 44 and spray ring 46 fixedly installed at its bottom through the arc-shaped swing plate 42. This causes the cleaning nozzles 45 on both sides of the arc-shaped cleaning seat 44 and the spray nozzles 47 on both sides of the spray ring 46 to move along the U-shaped trajectory while superimposed with a reciprocating swinging motion perpendicular to the walking direction, thus forming a composite motion mode 12 of walking and swinging.

[0044] The compressed air ejected from the cleaning nozzle 45 no longer blows directly into the rib groove at a fixed angle, but instead forms a dynamic jet that oscillates left and right. This oscillating airflow can repeatedly impact the side walls and corners of the rib groove from different angles, effectively removing stubborn impurities and mold residue stuck in narrow gaps or dead corners, making the cleaning effect far superior to static blowing in one direction. After the cleaning process is completed, the air path of the cleaning nozzle 45 is closed, and the liquid path of the spray head 47 is opened. The spray head 47 then evenly sprays the release agent onto the molding surfaces of the fixed mold 11 and the moving mold 12 in the same reciprocating oscillating state. Because the spray head 47 oscillates continuously, the release agent droplets can cover every inner wall of the rib groove at multiple angles, completely eliminating the local accumulation or missed spraying phenomenon that is easy to occur when spraying with a traditional fixed nozzle, ensuring that a uniform thickness and no dead corners of the release agent film are formed on the complex reinforcing rib groove surface. This design, in which cleaning and spraying share the same oscillation mechanism, allows the two processes to be seamlessly connected without the need for an additional drive device. The structure is highly integrated and compact, greatly simplifying the equipment layout and reducing manufacturing costs. The dynamic sweeping jet of the cleaning nozzle 45 greatly enhances the ability to remove stubborn residues, significantly improving the cleanliness of the rib grooves and providing a clean cavity surface for subsequent injection molding. This effectively avoids insufficient local strength or appearance defects in the reinforcing ribs caused by impurities embedding, directly improving the structural load-bearing capacity and product yield of the storage box. A uniform mold release agent coating ensures smooth demolding of the storage box during mold opening, eliminating the risk of reinforcing rib tearing, deformation, or breakage caused by localized sticking. This protects the delicate rib groove structure of the mold, extends its service life, and ensures a smooth and intact product surface, reducing post-processing polishing steps and further improving production efficiency and finished product quality.

[0045] See Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9The injection molding machine body 10 has a discharge port 16 inside, and a material collection and discharge assembly is provided inside the discharge port 16 to collect impurities and mold release agent liquid falling from the grooves of the fixed mold 11 and the moving mold 12. The material collection and discharge assembly includes a collection tray 52, an arc-shaped connecting rod 59, and a movable block 64. When cleaning impurities and spraying mold release agent in the grooves, the collection tray 52 is located at the center below the mold closing position of the fixed mold 11 and the moving mold 12 to receive the falling impurities and mold release agent liquid. When the injection molding machine body 10 ejects the finished product from the storage box, the collection tray 52 exits the discharge port 16 to discharge the material. The injection molding machine body 10 has a storage hole 14 at the bottom of the end away from the fixed mold 11. The material collection and discharge assembly also includes a push base plate 50, and hinge plates 51 are movably connected to both ends of the push base plate 50. The top of the hinge plates 51 is connected by a hinge. The movable connection is located at both ends of the bottom of the collection tray 52. ​​The push base plate 50 is set at the bottom of the collection tray 52, and an arc-shaped connecting rod 59 is fixedly installed at the end of the push base plate 50 near the collection hole 14. Several push rollers 53 are evenly installed at the end of the collection tray 52 near the fixed mold 11. An L-shaped support rod 54 is fixedly installed on each of the push base plates 50. A limiting post 55 for supporting and limiting the collection tray 52 is fixedly installed on the top of the L-shaped support rod 54. The limiting post 55 is located at both ends of the bottom of the collection tray 52. ​​A scraping brush 56 is fixedly installed at the end of the push base plate 50 near the fixed mold 11. The scraping brush 56 is used to clean the impurities falling into the bottom of the discharge port 16. The discharge port 16 has discharge ports 15 at both ends. The scraping brush 56 discharges the impurities at the bottom of the discharge port 16 through the discharge ports 15.

[0046] A blower seat 75 is fixedly installed on the top of the collection tray 52 near the fixed mold 11. Several air outlets 76 are evenly installed on the blower seat 75 on the side away from the push roller 53. A storage box 58 is fixedly installed on the bottom of the collection tray 52 at the end away from the blower seat 75. A storage groove 57 is opened on the bottom of the collection tray 52 at the end near the storage box 58. The airflow generated by the air outlets 76 is used to collect the impurities and release liquid collected in the collection tray 52 into the storage box 58 through the storage groove 57.

[0047] See Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9The injection molding machine body 10 has a receiving hole 14 at the bottom of the end away from the fixed mold 11. The base plate 60 is fixed inside the injection molding machine body 10. A servo motor 62 is installed at the bottom of the end of the base plate 60 away from the discharge port 16. Its output end is connected to the screw 63. The movable block 64 is threaded onto the screw 63. Arc-shaped connecting rods 59 are fixed at both ends of the movable block 64. The arc-shaped connecting rods 59 are fixed to the end of the push base plate 50 near the receiving hole 14. The push base plate 50 is located below the collection tray 52. ​​The two ends of the push base plate 50 are hinged to the bottom ends of the collection tray 52 through hinge plates 51. At the same time, an L-shaped support rod 54 is fixed on the push base plate 50. The top of the L-shaped support rod 54 is provided with a limiting post 55. The limiting post 55 is locked at the corresponding positions at the bottom ends of the collection tray 52.

[0048] When cleaning the rib grooves and spraying the release agent, the servo motor 62 drives the screw 63 to rotate, causing the movable block 64 to move towards the fixed mold 11, and the arc-shaped connecting rod 59 and the push base plate 50 to advance accordingly. In the initial stage, the collecting tray 52 moves horizontally forward together with the push base plate 50 under the support of the limiting post 55. When the push roller 53 at the front end of the collecting tray 52 contacts the inner wall of the discharge port 16 near the fixed mold 11, the roller is blocked by the inner wall and cannot move forward. At this time, the servo motor 62 continues to drive the movable block 64 to move forward, and the push base plate 50 continues to advance horizontally. Since the push roller 53 is limited, the hinge plate 51 is forced to rotate, lifting the front end of the collecting tray 52 upward. The hinge plate 51 at the rear end rotates in coordination, and the collecting tray 52 rises smoothly along the inner wall of the discharge port 16. The push roller 53 rolls upward close to the inner wall, playing a guiding and friction-reducing role. As the base plate 50 continues to feed, the collection tray 52 gradually rises to the receiving position directly below the bottom of the fixed mold 11 and returns to a horizontal state. At this time, the impurities blown off by the cleaning nozzle 45 and the excess release liquid sprayed out by the spray nozzle 47 fall freely into the discharge port 16 and are directly received by the collection tray 52.

[0049] After the cleaning and spraying processes are completed, the injection molding machine body 10 enters the mold closing and injection molding stage. Before the finished product is ejected after injection molding, the servo motor 62 reverses, the movable block 64 moves backward, and drives the push base plate 50 to move backward. At this time, under the action of gravity and the friction between the push roller 53 and the inner wall of the discharge port 16, the front push roller 53 of the collection tray 52 rolls downward along the inner wall, the hinge plate 51 rotates in the opposite direction, and the collection tray 52 descends smoothly until the bottom of the collection tray 52 is supported by the limit post 55. Then the push base plate 50 continues to move backward, and the collection tray 52 moves horizontally out of the discharge port 16 along with the push base plate 50 and returns to the storage hole 14. During the movement of the push base plate 50, the scraping brush 56 fixed at its front end scrapes any impurities that may accumulate on the bottom surface of the discharge port 16 toward the discharge ports 15 at both ends, completing the cleaning of the bottom of the discharge port 16. After the collecting tray 52 is withdrawn, the discharge port 16 is fully open, providing a smooth channel for the finished product of the storage box to be ejected and dropped. At the same time, the scraping brush 56 has cleaned the bottom surface of the discharge port 16 during the withdrawal process, avoiding impurities from contaminating the surface of the finished product.

[0050] Meanwhile, the collecting tray 52 has a blower seat 75 at its top near the fixed mold 11, with multiple air outlets 76 evenly arranged on the blower seat 75. At the bottom of the collecting tray 52 away from the blower seat 75, there is a storage box 58, and a storage groove 57 is opened at the bottom of the collecting tray 52 near the storage box 58. The collecting tray 52 automatically completes self-cleaning and material recovery while retracting to make way, requiring no additional power. During the cleaning and spraying stages, the collecting tray 52 can automatically deliver itself to the area directly below the fixed mold 11, close to the material drop area, to collect waste material and waste liquid. This greatly reduces the splashing of impurities and release fluid onto other parts of the equipment, effectively improving the cleanliness of the production environment, reducing the frequency of manual cleaning, and preventing waste liquid from seeping into equipment gaps and causing corrosion or malfunction. During the withdrawal of the collection tray 52, the scraping brush 56 simultaneously scrapes away the accumulated impurities on the bottom surface of the discharge port 16 and discharges them through the discharge port 15, eliminating the hidden danger of impurities accumulating and jamming the finished product or scratching the product surface, and ensuring the smoothness of the ejection action and the surface quality of the product.

[0051] See Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9The movable block 64 is also equipped with a blower unloading assembly, which includes an air outlet 76 and a blower 70. When the movable block 64 drives the collection tray 52 out of the unloading port 16, the blower airflow generated by the air outlet 76 collects the impurities and release fluid in the collection tray 52. ​​The blower unloading assembly also includes a servo motor 62. A base plate 60 is fixedly installed inside the injection molding machine body 10. The servo motor 62 is fixedly installed at the bottom of the base plate 60 at the end away from the unloading port 16. The output end of the servo motor 62 is fixedly installed with... There is a screw 63, and a movable block 64 is threaded through the screw 63. Arc-shaped connecting rods 59 are fixedly installed at both ends of the movable block 64. The arc-shaped connecting rods 59 and the collection tray 52 are both movable in the storage hole 14. A blower 70 is fixedly installed at the top of the base plate 60 at the end away from the collection tray 52. ​​A piston plate 71 is movably arranged inside the blower 70. A movable plate 66 is fixedly installed on the top of the movable block 64. A piston rod 72 is fixedly installed on the top of the movable plate 66. The piston rod 72 passes through the blower 70 and is fixedly connected to the piston plate 71.

[0052] The base plate 60 has a base groove 61, and the movable plate 66 is movably inserted through the base groove 61. The bottom of the base plate 60 is fixedly installed with a limit guide rail 65, and the movable block 64 is movable on the limit guide rail 65. The blower 70 has an air inlet pipe 73 and an air outlet pipe 74 fixedly installed at the end away from the movable plate 66, and the air outlet pipe 74 is connected to the blower seat 75. Both the air inlet pipe 73 and the air outlet pipe 74 are equipped with one-way valves.

[0053] See Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 The working principle of the blower feeding assembly is based on the retracting motion of the movable block 64 driving a piston-type blower mechanism. A blower 70 is fixedly mounted on the top of the base plate 60 at the end furthest from the collection tray 52. ​​A piston plate 71 is movably installed inside the blower 70. A piston rod 72 is fixedly connected to the top of the movable block 64 via a movable plate 66. The piston rod 72 passes through the blower 70 and is fixedly connected to the piston plate 71. An air inlet pipe 73 and an air outlet pipe 74 are provided at the end of the blower 70 furthest from the movable plate 66. Both the air inlet pipe 73 and the air outlet pipe 74 are equipped with one-way valves. The other end of the air outlet pipe 74 is connected to the blower seat 75 at the front end of the collection tray 52.

[0054] As the servo motor 62 reverses and drives the movable block 64 backward, and the collecting tray 52 exits the discharge port 16, the movable plate 66 moves synchronously with the movable block 64. This movement, via the piston rod 72, pulls the piston plate 71 towards the inlet and outlet of the blower 70, reducing the internal volume of the blower 70 and compressing the gas. At this time, the one-way valve in the outlet pipe 74 opens under the pressure of the high-pressure gas, while the one-way valve in the inlet pipe 73 remains closed under pressure. Compressed air is then delivered through the outlet pipe 74 to the blower seat 75 and ejected from multiple outlets 76. When the movable block 64 moves forward and the collecting tray 52 is pushed out, the piston plate 71 moves in the opposite direction, increasing the internal volume of the blower 70 and creating a negative pressure. The one-way valve in the inlet pipe 73 opens under the external atmospheric pressure, drawing outside air into the blower 70. Simultaneously, the one-way valve in the outlet pipe 74 closes under the negative pressure and external pipeline pressure, preventing gas backflow and completing one complete cycle of intake and exhaust. The cooperation of the two sets of one-way valves enables the piston to automatically switch the intake and exhaust paths during reciprocating motion, ensuring that the blowing action and the retraction and clearance movement of the collection plate 52 are precisely synchronized, and the airflow direction is always from the air outlet 76 to the rear of the collection plate 52.

[0055] Utilizing the mechanical energy of the piston's own movement to drive the blower eliminates the need for an additional compressed air source or independent blower, achieving passive, real-time cleaning. This significantly reduces equipment energy consumption and operating costs, resulting in a more compact structure. The one-way valves within the inlet pipe 73 and outlet pipe 74 allow for automatic switching between intake and exhaust processes without interference. This ensures a stable high-pressure purging airflow with each piston retraction and reliable intake and reset during piston advance. The system boasts extremely high reliability, eliminating the need for solenoid valves or other electronically controlled components, reducing electrical failure points, and enhancing the system's purely mechanical self-sufficiency.

[0056] The blowing and cleaning action of the collection tray 52 is completely synchronized. Within a very short time after the collection tray 52 moves out of the discharge port 16, the concentrated blowing and recovery of impurities on the tray surface is completed without additional disruption to the production cycle, significantly improving circulation efficiency. The high-speed airflow generated by the outlet 76 blows directionally from the front to the rear of the collection tray 52, thoroughly driving residual impurities and release fluid onto the tray surface into the collection trough 57 and then into the collection box 58. This prevents waste materials and liquids from drying and accumulating on the tray surface, maintaining the long-term effective carrying capacity of the collection tray 52, reducing the frequency of manual cleaning, and extending the continuous operation time of the device. The centrally recovered impurities and release fluid are stored in the collection box 58 for easy subsequent centralized disposal or treatment, effectively preventing waste liquid spillage and pollution of the production environment, improving workshop cleanliness, and meeting green and environmentally friendly production requirements.

[0057] Meanwhile, the blower 70, piston rod 72, and movable plate 66 are driven by the same source, simplifying the transmission chain and making the overall structure more compact and reliable, reducing the complexity of maintenance and repair. Furthermore, the mechanical design of the one-way valve ensures a long service life and fast response, maintaining stable unidirectional conduction characteristics even under long-term high-frequency use, adapting to the continuous production rhythm of injection molding processes. This blower feeding assembly, with its minimalist structure, achieves self-cleaning of the collection tray 52 and automatic waste recycling, significantly improving the automation level and unattended operation capability of the equipment, reducing labor costs, and ensuring that the collection tray 52 is automatically emptied each time it exits, preventing impurities and waste liquid residues from hardening and causing a decrease in the collection capacity or blockage of the collection tray 52. ​​It also prevents mold release agent accumulation from deteriorating and producing odors or contaminating the mold. The uniformly collected impurities and waste liquid are concentrated in the collection box 58 for easy centralized dumping and disposal, significantly improving the environmental performance and waste management level of the equipment.

[0058] Working principle: The melting frame 13 is fixedly installed on the top of the injection molding machine body 10 at the end away from the moving mold 12, and has a screw or plunger type pushing mechanism inside. During the production cycle, the heating device inside the melting frame 13 heats the plastic raw material to a molten state, and then the pushing mechanism is activated to inject the molten plastic into the cavity formed by the closing of the fixed mold 11 and the moving mold 12 under high pressure along the injection channel. The moving mold 12 moves towards the fixed mold 11 under the drive of the guiding mechanism of the injection molding machine body 10 until it fits tightly with the fixed mold 11 to form a closed molding cavity. The molten plastic fills the entire cavity under pressure, including the grooves corresponding to all the reinforcing ribs, and then enters the holding pressure and cooling stage. The material gradually solidifies and forms a finished storage box. After cooling, the moving mold 12 retracts to open the mold. At this time, the storage box is still attached to one side of the fixed mold 11, and is subsequently ejected from the mold by the ejection mechanism. After the mold opens, the grooves of the reinforcing ribs on the fixed mold 11 and the moving mold 12 are fully exposed, providing operating space for cleaning and spraying of release agent. The screw 63 or plunger of the melting frame 13 pushes the mechanism to achieve precise melt metering and high-pressure injection, ensuring that the reinforcing ribs and other detailed structures can be completely filled, thus ensuring the molding integrity and high load-bearing capacity of the storage box from the source. The stable clamping force of the mold closing mechanism ensures the cavity is sealed, prevents flash from being generated, and improves the dimensional accuracy and appearance quality of the product.

[0059] The support frame 20 is fixed to the injection molding machine body 10 at the top of the fixed mold 11. Inside, four rectangularly arranged fixed gears 21 are mounted via a rotating shaft, and a loop chain 22 surrounds the four gears. The drive motor 24 is mounted on the side of the support frame 20 away from the moving mold 12 via a motor cover 23, and its output end is connected to the rotating shaft of one of the fixed gears 21. Positioning rods 30 are fixed at both ends inside the support frame 20, and each positioning rod 30 is movably fitted with a positioning block 31. A moving plate is fixedly installed between two positioning blocks 31. 32. The moving plate 32 can only reciprocate along the axis of the positioning rod 30. A T-shaped groove 33 is provided on the inner side of the moving plate 32, and a T-shaped slider 34 slides in the groove. The moving block 35 is fixed between the T-shaped sliders 34, so the moving block 35 can slide in the moving plate 32 in a direction perpendicular to the positioning rod 30. A driving rod 25 is fixed at the center of the side of the moving block 35 near the chain 22. The driving rod 25 is fastened to a link of the loop chain 22. An arc-shaped connecting rod 36 is fixed at the center of the other side of the moving block 35.

[0060] When the drive motor 24 is running, the fixed gear 21 drives the chain 22 to move cyclically along a rectangular loop. Since the driving rod 25 moves along the chain links in a rectangular trajectory, and the moving block 35 can move along the direction of the positioning rod 30 through the cooperation of the moving plate 32 and the positioning block 31, and also move along the direction of the sliding groove of the moving plate 32 through the T-shaped slider 34, the combination of these two linear movements causes the moving block 35 and the arc-shaped connecting rod 36 to move in the plane corresponding to the rectangular path of the chain 22. The cleaning nozzle 45 at the lower end of the arc-shaped connecting rod 36 traces a U-shaped trajectory in the area between the fixed mold 11 and the moving mold 12, that is, it enters the fixed mold 11 and the moving mold from one side of the mold. Between molds 11 and 12, the nozzle descends to the middle position between the fixed mold 11 and the moving mold 12, then moves horizontally along the width of the mold to sweep across all the rib grooves, and then rises and exits from the other side, achieving a comprehensive air-blowing cleaning of residual impurities in the rib grooves, ensuring no cleaning dead corners; through the combined movement of the loop chain 22 with the positioning block 31, positioning rod 30, T-shaped slide 33 and T-shaped slider 34, the cleaning nozzle 45 covers the entire rib groove area along the U-shaped trajectory, with a stable movement trajectory and no blind spots, which greatly improves the cleaning efficiency and consistency of the reinforcing rib grooves, avoids the problem of incomplete forming or insufficient strength of the reinforcing ribs due to residual impurities, thereby improving the load-bearing capacity and yield of the storage box;

[0061] The oscillating diffusion assembly is located below the moving block 35 to oscillate back and forth while the cleaning nozzle 45 and spray nozzle 47 move along a U-shaped trajectory, thereby expanding the blowing and spraying range. The bottom of the arc-shaped connecting rod 36 is movably connected to an arc-shaped oscillating plate 42 via a rotating seat 37. An arc-shaped oscillating groove 43 is provided on the arc-shaped oscillating plate 42. A rotary motor 40 is also fixed at the bottom of the arc-shaped connecting rod 36. An L-shaped drive arm 41 is fixedly installed at its output end. The end of the L-shaped drive arm 41 extends into the arc-shaped oscillating groove 43 and its size matches the groove width. An arc-shaped cleaning seat 44 is fixedly installed at the lower part of the arc-shaped oscillating plate 42. Multiple cleaning nozzles 45 for blowing away impurities are arranged on both sides of the arc-shaped cleaning seat 44. A spray ring 46 is also fixed on the outside of the arc-shaped cleaning seat 44. Multiple spray nozzles 47 for spraying release agent are installed on both sides of the spray ring 46.

[0062] When the moving block 35 drives the arc-shaped connecting rod 36 to move along a U-shaped trajectory, the rotary motor 40 works synchronously, driving the L-shaped drive arm 41 to rotate. Its end slides in the arc-shaped swing groove 43 and actuates the arc-shaped swing plate 42, causing the arc-shaped swing plate 42 to swing back and forth around the rotating seat 37. As a result, the arc-shaped cleaning seat 44 and the spray ring 46, together with the cleaning nozzles 45 and 47 on them, swing back and forth. The compressed air sprayed by the cleaning nozzles 45 forms a jet that swings left and right, which can blow off impurities stuck in the corners or deep within the rib grooves. After the cleaning nozzles 45 have finished cleaning the rib grooves of the fixed mold 11 and the moving mold 12, the path of the cleaning nozzles 45 is closed. Next, the path of the spray head 47 is opened, and the spray head 47 sprays the release agent evenly onto the molding surfaces of the fixed mold 11 and the moving mold 12 as it swings. The two work together to thoroughly clean the rib grooves and achieve uniform coverage of the release agent. The cleaning nozzle 45 and the spray head 47 swing back and forth while moving, so that the airflow and spray each produce a dynamic sweeping effect, which can effectively remove stubborn residues in the narrow corners of the rib grooves, while ensuring that the release agent forms a uniform coating on the surface of the complex rib grooves. This not only avoids the reinforcing ribs from being torn and deformed due to local adhesion, but also reduces the excessive accumulation of release agent, improves the surface quality of the storage box and the smoothness of demolding, and reduces the frequency of mold maintenance.

[0063] A discharge port 16 is located at the bottom of the injection molding machine body 10. A material receiving and discharge assembly is used to receive impurities and excess mold release agent blown down from the rib grooves and to move aside to make way before the finished product is ejected. A base plate 60 is fixed inside the injection molding machine body 10. A servo motor 62 is installed at the bottom of the end of the base plate 60 away from the discharge port 16, and its output end is connected to a screw 63. A movable block 64 is threaded onto the screw 63. Arc-shaped connecting rods 59 are fixed at both ends of the movable block 64. The arc-shaped connecting rods 59 are fixed to the end of the push base plate 50 in the receiving hole 14 near the receiving hole 14. The push base plate 50 is located below the collecting tray 52. Both ends of the push base plate 50 are hinged to the bottom ends of the collection tray 52 via hinge plates 51. At the same time, an L-shaped support rod 54 is fixed on the push base plate 50. The top of the L-shaped support rod 54 is provided with a limiting post 55. The limiting post 55 is set at the corresponding positions at both ends of the bottom of the collection tray 52, which can both support the collection tray 52 and limit its horizontal movement relative to the push base plate 50. The end of the collection tray 52 near the fixed mold 11 is also equipped with multiple push rollers 53, which are used to roll and contact the inner wall of the discharge port 16 to reduce friction. A scraping brush 56 is fixed at the end of the push base plate 50 near the fixed mold 11, and discharge ports 15 are opened at both ends of the discharge port 16.

[0064] When cleaning the rib grooves and spraying the release agent, the servo motor 62 drives the movable block 64 to move towards the fixed mold 11 via the screw 63, and the arc-shaped connecting rod 59 and the push base plate 50 advance accordingly. In the initial stage, the collecting tray 52, supported by the limiting post 55, moves horizontally forward together with the push base plate 50, maintaining a stable horizontal posture. When the push roller 53 at the front end of the collecting tray 52 contacts the inner wall of the discharge port 16 near the fixed mold 11, the push roller 53 is blocked by the inner wall and cannot move forward further. At this time, the servo motor 62 continues to drive the movable block 64 forward, and the push base plate 50 continues to advance horizontally. Because the push roller 53 is limited, the hinge plate 51 is forced to rotate, lifting the front end of the collection plate 52 upward. At the same time, the rear hinge plate 51 rotates in coordination, and the collection plate 52 rises smoothly along the inner wall of the discharge port 16, pushing the roller 53 to roll upward against the inner wall, which plays a guiding and friction-reducing role. As the push base plate 50 continues to feed, the collection plate 52 gradually rises to the receiving position directly below the bottom of the fixed mold 11, thus closely adhering to the material discharge area. At this time, the impurities blown off by the cleaning nozzle 45 and the excess release liquid sprayed by the spray nozzle 47 fall freely into the discharge port 16 and are directly received by the collection plate 52.

[0065] After the cleaning and spraying actions are completed, the injection molding machine body 10 enters the injection molding stage of the next storage box. Before the finished product of the storage box needs to be ejected after the next injection, the servo motor 62 reverses, the movable block 64 moves backward, and drives the push base plate 50 to move backward. At this time, under the action of gravity and the friction between the push roller 53 and the inner wall of the discharge port 16, the front push roller 53 of the collection tray 52 rolls down along the inner wall, the hinge plate 51 rotates in the opposite direction, and the collection tray 52 descends smoothly until the bottom of the collection tray 52 sits back on the limit post 55 and is supported by the limit post 55, and the descent ends. Then the push base plate 50 continues to move backward, and the collection tray 52 moves horizontally out of the discharge port 16 along with the push base plate 50 and returns to the storage hole 14. During the movement of the push base plate 50, the scraping brush 56 fixed at its front end scrapes the bottom surface of the discharge port 16. The accumulated impurities are scraped towards the discharge ports 15 at both ends, completing the cleaning of the bottom of the discharge port 16, thus ensuring the cleanliness of the material falling from the storage box; after the collection tray 52 is withdrawn, the discharge port 16 is fully open, providing a smooth channel for the subsequent ejection and falling of finished products; the horizontal pushing, rising receiving, lowering and horizontal withdrawal actions of the collection tray 52 are all driven by the same servo motor 62, which automatically realizes the motion conversion by pushing the roller 53 to cooperate with the inner wall of the discharge port 16 and the hinged linkage mechanism, with precise timing and no need for an additional power source; the collection tray 52 can accurately deliver to the bottom of the fixed mold 11 to receive waste materials and waste liquid, and reliably make way before ejection, avoiding interference with the finished product; the scraping brush 56 follows to clean the bottom of the discharge port 16, preventing impurities from accumulating and jamming the finished product, ensuring smooth ejection action; overall, the cleanliness of the production environment is improved and the reliability of continuous operation of the equipment is enhanced;

[0066] The function of the blower feeding assembly is to concentrate the impurities and release liquid collected in the collection tray 52 into the storage box 58 as the collection tray 52 exits the feeding port 16; the top of the collection tray 52 near the fixed mold 11 is equipped with a blower seat 75, and multiple air outlets 76 are evenly arranged on the inner side of the blower seat 75; the bottom of the other end of the collection tray 52 away from the blower seat 75 is equipped with a storage box 58, and a storage groove 57 is opened on the bottom of the tray near the storage box 58; the base plate 60 is located at the end away from the collection tray 52. A blower 70 is fixed at the top, and a sliding piston plate 71 is disposed inside the blower 70; a movable plate 66 is fixed at the top of the movable block 64, and a piston rod 72 is installed on the movable plate 66. The piston rod 72 passes through the blower 70 and is fixedly connected to the piston plate 71; an air inlet pipe 73 and an air outlet pipe 74 are provided at the end of the blower 70 away from the movable plate 66. The air inlet pipe 73 is equipped with a one-way valve that only allows air to enter, and the air outlet pipe 74 is equipped with a one-way valve that allows air to exit in one direction and is connected to the blower seat 75.

[0067] As the servo motor 62 drives the movable block 64 to retreat and the collecting tray 52 exits the discharge port 16, the movable plate 66 moves synchronously with the movable block 64. This movement, via the piston rod 72, pushes the piston plate 71 to move within the blower 70. When the movable block 64 retracts, the piston plate 71 compresses the air within the blower 70, and the high-pressure gas enters the blower seat 75 through the exhaust pipe 74 and is ejected from each exhaust port 76. The arrangement of the exhaust ports 76 causes the airflow to sweep from the front of the collecting tray 52 backwards, blowing impurities and residual release liquid collected on the tray surface towards the collection tank 57, where they fall into the collection box 58 for unified recycling. In this way, the collection tray 52 automatically completes self-cleaning and material recovery while retracting and making way, without the need for additional power, and the action is completely synchronized with the retraction process; the mechanical energy of the retraction motion drives the piston-type blower, realizing passive instant cleaning, with a compact structure and energy saving; the collection tray 52 completes self-cleaning simultaneously during the retraction process, avoiding the hardening of impurities and waste liquid residues that could lead to subsequent failure of the support, and also preventing the release agent from accumulating and deteriorating, thus contaminating the mold; the uniformly recovered impurities and waste liquid are easy to centrally process, significantly improving the automation level and environmental performance of the equipment, and reducing the frequency of manual cleaning;

[0068] Therefore, the sequence of actions for a complete cycle of the injection molding machine is as follows: The pushing mechanism inside the melting frame 13 injects molten plastic under high pressure into the cavity formed by the closing of the moving mold 12 and the fixed mold 11. After the plastic fills the entire cavity, including the reinforcing rib grooves, it is held under pressure and cooled to solidify. After cooling, the moving mold 12 retracts and opens the mold. The U-shaped cleaning component drives the cleaning nozzle 45 to enter between the fixed mold 11 and the moving mold 12 in a U-shaped trajectory. The oscillating diffusion component makes the nozzle oscillate back and forth, and the cleaning nozzle 45 blows away impurities from the rib grooves. Then, the spray head 47 sprays the release agent. The falling impurities and release liquid are collected by the collection tray 52 located at the center below the fixed mold 11. After cleaning and spraying are completed, the cleaning nozzle 45... The mold closes after injection molding for the next injection cycle. After injection molding ends, the mold opens, and before ejection, the servo motor 62 drives the movable block 64 to move backward, causing the collection tray 52 to exit the discharge port 16. At the same time, the scraping brush 56 cleans the bottom surface of the discharge port 16, and the blower discharge assembly blows the debris in the collection tray 52 into the storage box 58. Subsequently, the formed storage box is ejected by the ejection mechanism and falls without obstruction. All components reset and enter the next cycle. The components work together to achieve seamless connection between cleaning, spraying, recycling and finished product discharge in the complete injection molding process, which significantly improves the forming quality of reinforcing ribs, the convenience of mold maintenance, and the overall automation level and cleanliness of the production environment.

[0069] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Those skilled in the art can make various changes within their knowledge without departing from the spirit of the present invention.

Claims

1. A reinforcing rib auxiliary molding device for a high-load-bearing modular plastic storage box, comprising an injection molding machine body, wherein a fixed mold is fixedly disposed within the injection molding machine body, and a movable mold cooperating with the fixed mold is movably installed within the injection molding machine body, characterized in that, A support frame is fixedly installed on the injection molding machine body at the top of the corresponding fixed mold. The support frame is equipped with a spiral cleaning component, which is used to cover and blow clean the residual impurities in the grooves of the reinforcing ribs on the fixed mold and the moving mold. The U-shaped cleaning assembly includes a fixed gear, a moving plate, and a moving block. The cleaning nozzles in the U-shaped cleaning assembly move along a U-shaped trajectory between the fixed mold and the moving mold to perform covering air blowing. The moving block is equipped with a swing diffusion assembly, which drives the cleaning nozzle to swing back and forth while moving along a U-shaped trajectory; the swing diffusion assembly includes an arc-shaped connecting rod and an L-shaped drive arm; The injection molding machine body has a discharge port inside, which is equipped with a material collection and discharge assembly to collect impurities and mold release agent liquid falling from the rib grooves of the fixed mold and the moving mold. The material collection and discharge assembly includes a collection tray, an arc-shaped connecting rod, and a movable block. When cleaning impurities and spraying mold release agent in the rib grooves, the collection tray is located at the center below the mold closing position of the fixed mold and the moving mold to receive the falling impurities and mold release agent liquid. When the injection molding machine body ejects the finished product from the storage box, the collection tray exits the discharge port to make way for the discharge. The movable block is also equipped with a blower feeding assembly, which includes an air outlet and a blower tube. When the movable block drives the collection tray out of the feeding port, the blower airflow generated by the air outlet will collect the impurities and release liquid in the collection tray. The loop-shaped cleaning assembly also includes a drive motor. Inside the support frame, four fixed gears are movably connected via a rotating shaft. A chain is movably connected to the outer periphery of the fixed gears. The chain has a loop-shaped structure. The drive motor is fixedly installed on the side of the support frame away from the moving mold via a motor cover. The output end of the drive motor is fixedly installed on the rotating shaft of one of the fixed gears. The support frame has positioning rods fixedly installed at both ends, and each positioning rod is movably connected to a positioning block. The moving plate is fixedly installed between the positioning blocks, and the moving block slides within the moving plate. The injection molding machine body has a storage hole at the bottom of the end away from the fixed mold. The material collection and discharge assembly also includes a push base plate. The two ends of the push base plate are movably connected to hinge plates. The top of the hinge plates is movably connected to the bottom ends of the collection tray through hinges. The push base plate is set at the bottom of the collection tray, and an arc-shaped connecting rod is fixedly installed on the end of the push base plate near the storage hole. The collecting tray has several push rollers evenly installed at the end near the fixed mold. Each push base plate is fixedly equipped with an L-shaped support rod. The top of the L-shaped support rod is fixedly equipped with a limiting post to support and limit the collecting tray. The limiting post is located at both ends of the bottom of the collecting tray. A scraping brush is fixedly installed at the end of the push base plate near the fixed mold. The scraping brush is used to clean the impurities falling into the bottom of the discharge port. Discharge ports are opened at both ends of the discharge port. The scraping brush discharges the impurities at the bottom of the discharge port through the discharge ports.

2. The reinforcing rib-assisted molding device for a high-load-bearing modular plastic storage box according to claim 1, characterized in that, The inner side of the motion plate is provided with a T-shaped groove, and a T-shaped slider is slidably connected in the T-shaped groove. The motion block is fixedly installed between the T-shaped sliders. A driving rod is fixedly installed at the center of the side of the motion block near the chain. The driving rod is fixedly installed on the chain link. An arc-shaped connecting rod is fixedly installed at the center of the side of the motion block away from the chain.

3. The reinforcing rib-assisted molding device for a high-load-bearing modular plastic storage box according to claim 1, characterized in that, The injection molding machine body has a melting frame fixedly installed at the top of the end away from the moving mold. The melting frame injects molten plastic into the fixed mold and the moving mold after the mold is closed. The swaying diffusion assembly also includes an arc-shaped swaying plate. The bottom of the arc-shaped connecting rod is movably connected to the arc-shaped swaying plate through a rotating seat. The arc-shaped swaying plate has an arc-shaped swaying groove. A rotary motor is fixedly installed at the bottom of the arc-shaped connecting rod, and an L-shaped drive arm is fixed at the output end of the rotary motor. The size of the L-shaped drive arm matches the arc-shaped swing groove, and the L-shaped drive arm moves within the arc-shaped swing groove.

4. The reinforcing rib-assisted molding device for a high-load-bearing modular plastic storage box according to claim 3, characterized in that, An arc-shaped cleaning seat is fixedly installed at the bottom of the arc-shaped swaying plate. Several cleaning nozzles for blowing air into the grooves are fixedly installed on both sides of the arc-shaped cleaning seat. A spray ring is fixedly installed at the bottom of the arc-shaped swaying plate. Several spray nozzles for spraying release agent into the moving mold and the fixed mold are fixedly installed on both sides of the spray ring. The spray ring is located on the outside of the arc-shaped cleaning seat.

5. The reinforcing rib-assisted molding device for a high-load-bearing modular plastic storage box according to claim 1, characterized in that, The collecting tray has a blower seat fixedly installed at the top of the end near the fixed mold. Several air outlets are evenly installed on the blower seat on the side away from the push roller. A collection box is fixedly installed at the bottom of the collecting tray at the end away from the blower seat, and a collection groove is opened at the bottom of the collecting tray at the end near the collection box. The airflow generated by the air outlets is used to collect the impurities and release liquid collected in the collecting tray into the collection box through the collection groove.

6. The reinforcing rib-assisted molding device for a high-load-bearing modular plastic storage box according to claim 5, characterized in that, The blower feeding assembly also includes a servo motor. A base plate is fixedly installed inside the injection molding machine body. A servo motor is fixedly installed at the bottom of the base plate at the end away from the feeding port. A screw is fixedly installed at the output end of the servo motor. A movable block is threaded through the screw. Arc-shaped connecting rods are fixedly installed at both ends of the movable block. The arc-shaped connecting rods and the collecting tray are both movable in the receiving hole. A blower is fixedly installed on the top of the base plate at the end away from the collection tray. A piston plate is movably installed inside the blower. A movable plate is fixedly installed on the top of the movable block. A piston rod is fixedly installed on the top of the movable plate. The piston rod passes through the blower and is fixedly connected to the piston plate.

7. The reinforcing rib-assisted molding device for a high-load-bearing modular plastic storage box according to claim 6, characterized in that, The base plate has a base groove, the movable plate moves through the base groove, a limit guide rail is fixedly installed at the bottom of the base plate, the movable block moves on the limit guide rail, and an air inlet pipe and an air outlet pipe are fixedly installed at the end of the blower away from the movable plate, and the air outlet pipe is connected to the blower seat.

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