Multi-shaft bale opener for recycling plastic

Abstract

The utility model provides a kind of multi-shaft unpacking machine for recycled plastic recycling, it is related to plastic recycling equipment technical field, the multi-shaft unpacking machine, including rack and the unpacking assembly being set on rack, unpacking assembly includes box and at least two parallel settings and the knife roll rotationally connected in box, box is also equipped with the drive mechanism for independently driving the rotation of each knife roll, so that the rotational speed of each knife roll can be differentially adjusted;The top of unpacking assembly is equipped with the protective shell with feed inlet, the bottom of unpacking assembly is provided with collecting hopper and the discharge assembly communicated with collecting hopper, and the discharge assembly is configured to outwardly transport the loosened material.The utility model controls the rotational speed of the feed end and the discharge end knife roll independently, significantly improves the processing adaptability of the equipment to different materials and the stability of the loosening effect during the entire working life;Through the setting of collecting hopper and discharge assembly, the forced smooth discharge of loosened material is realized, effectively solving the problem of poor discharge.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic recycling equipment, and in particular to a multi-axis unpacking machine for recycling recycled plastics. Background Technology

[0002] Recycling plastics is a crucial step in achieving resource recycling and alleviating environmental pressure. In the recycling process, the compacted plastic bales formed after compression processing need to be efficiently opened by a bale opener before entering the subsequent sorting, cleaning, and granulation processes. As the core equipment for pre-processing, the performance of the bale opener directly determines the efficiency of the entire production line and the quality of the finished product. However, traditional bale openers often exhibit numerous problems due to design limitations when dealing with plastic bales with high compression ratios and complex compositions.

[0003] Currently, most common bag openers adopt a single-shaft or fixed-spacing cutter roller structure. Their opening function mainly relies on the impact and initial crushing of materials by high-speed rotating cutters. When facing plastic bags of different densities and sizes, the impact angle and depth of the cutters are difficult to adjust flexibly, which can easily lead to incomplete opening or over-crushing, affecting the quality and yield of recycled materials. In addition, the cutters of existing equipment are mostly fixed, and once worn or damaged, the replacement process is cumbersome, the maintenance cost is high, and the downtime is long, which seriously restricts the continuity of production.

[0004] More notably, existing packaging machines generally lack effective online monitoring and adaptive control capabilities. When feeding is uneven or material properties change abruptly, material buildup and blockage can easily occur inside the equipment, which can not only jam the cutter rollers and burn out the motor, but may even cause mechanical failures, forcing the entire production line to stop. At the same time, traditional gravity discharge or vibration discharge methods are prone to bridging or blockage at the discharge port when handling thin or highly entangled plastics, making it difficult to guarantee the stability of material conveying.

[0005] Based on the above pain points, how to fundamentally improve the opening efficiency and quality, achieve intelligent anti-blocking and smooth material discharge during operation, and significantly enhance the maintainability of the equipment has become the core challenge for breaking through the technical bottleneck of recycled plastic pretreatment and promoting the industry's upgrade to automation and intelligence.

[0006] Therefore, a high-efficiency multi-axis packing machine with adaptive adjustment capability, integrated intelligent anti-stacking system and convenient maintenance is particularly necessary. Utility Model Content

[0007] The purpose of this invention is to provide a multi-axis unpacking machine for recycling recycled plastics, which aims to solve the problems of preventing material accumulation and insufficient maintenance capabilities.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a multi-axis unpacking machine for recycling plastics, comprising a frame and an unpacking assembly disposed on the frame, the unpacking assembly comprising a housing and at least two parallel and rotatably connected cutter rollers to the housing, the housing also being provided with a drive mechanism for independently driving the rotation of each cutter roller, so that the rotation speed of each cutter roller can be adjusted differentially; The top of the opening assembly is provided with a protective shell with a feed inlet, and the bottom of the opening assembly is provided with a hopper and a discharge assembly connected to the hopper. The discharge assembly is configured to convey the opened material outward.

[0009] Preferably, the discharge assembly includes an inclined discharge cylinder, a discharge shaft is provided inside the discharge cylinder, the discharge shaft is provided with spirally arranged blades, the end of the discharge shaft extends out of the discharge cylinder, and a rotary drive is provided at one end of the discharge shaft.

[0010] Preferably, the rotary drive is connected to the frame, the discharge cylinder has a discharge port at the higher end, and the discharge cylinder has an inspection port on its wall.

[0011] Preferably, the cutter roller is provided with detachable cutters, and multiple sets of cutters are provided along the circumference and axial direction of the cutter roller, and the cutters on adjacent cutter rollers are staggered.

[0012] Preferably, the drive mechanism includes an independent motor connected to each end of the cutter roller.

[0013] Preferably, the unpacking assembly is provided with a lifting assembly on the side near the feed inlet. The lifting assembly includes a movable plate that can be raised and lowered. The movable plate is configured to rise when material accumulates above the unpacking assembly to block the feeding of material into the feed inlet.

[0014] Preferably, the movable plate has an ear plate on its side, and a linear drive is provided at the bottom of the ear plate, which can drive the movable plate to rise and fall.

[0015] Preferably, the protective shell is provided with a detection component for detecting the stacking condition. The detection component is signal-connected to the linear drive and is configured to trigger the linear drive to push the moving plate upward when stacking is detected.

[0016] Preferably, the detection component includes a movable sensing plate, which is disposed above the unpacking component in an area where material accumulation is likely to occur.

[0017] Preferably, when material accumulates above the unpacking component, the accumulated material presses against the sensing plate, and the detection component generates a control signal based on the displacement or pressure change of the sensing plate, triggering the linear drive to operate.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention significantly improves the equipment's adaptability to different materials and the stability of its opening effect throughout its entire working life by independently controlling the rotational speed of the cutter rollers at the feeding and discharging ends. Through a detection component with a sensor plate located in the material-accumulating area above the opening assembly, a lifting component driven by a linear drive, and an inclined spiral discharge component, a highly efficient, reliable, and easy-to-maintain multi-axis bag opener for recycled plastics is constructed. This achieves instantaneous automatic protection against the risk of compacted plastic bag accumulation and forced smooth discharge of the loosened material, effectively solving the problems of easy downtime due to material accumulation, poor discharge, and inconvenient maintenance inherent in traditional bag openers. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of Embodiment 1 of this utility model.

[0020] Figure 2 This is a front view of Embodiment 1 of this utility model.

[0021] Figure 3 This is a left view of Embodiment 1 of this utility model.

[0022] Figure 4 This is a schematic diagram of the explosion of the cutting tool on the cutting roller in this utility model.

[0023] Figure 5 This is a schematic diagram of the overall embodiment two of this utility model.

[0024] Figure 6 This is a partial cross-sectional view of Embodiment 2 of this utility model.

[0025] Figure label: 1. Frame; 2. Unpacking assembly; 21. Housing; 22. Cutting roller; 221. Cutting tool; 23. Drive mechanism; 3. Protective shell; 31. Feed inlet; 4. Collecting hopper; 5. Discharge assembly; 51. Discharge cylinder; 511. Discharge port; 512. Inspection port; 52. Discharge shaft; 521. Blade; 53. Rotary drive component; 6. Lifting assembly; 61. Moving plate; 611. Ear plate; 62. Linear drive component; 7. Detection assembly; 71. Induction plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1 To improve the processing efficiency and operational stability of multi-axis packing machines, such as Figures 1 to 4 As shown, this utility model proposes a multi-axis unpacking machine for recycling plastics, including a frame 1 and an unpacking assembly 2 mounted on the frame 1. The unpacking assembly 2 includes a housing 21 and at least two parallel cutter rollers 22 rotatably connected to the housing 21. The housing 21 is also provided with a drive mechanism 23 for independently driving the rotation of each cutter roller 22, so that the rotation speed of each cutter roller 22 can be adjusted differently.

[0028] The top of the opening assembly 2 is provided with a protective shell 3 with a feed inlet 31. The feed inlet 31 is equipped with a gravity baffle to prevent dust from escaping. The bottom of the opening assembly 2 is provided with a collection hopper 4 and a discharge assembly 5 connected to the collection hopper 4. The discharge assembly 5 is configured to convey the opened material outward.

[0029] The drive mechanism 23 includes an independent motor connected to the end of each cutter roller 22. There can be four cutter rollers 22 in the unpacking assembly 2. Each cutter roller 22 is driven by an independent motor at its end, so that the rotation speed of each cutter roller 22 can be adjusted differently. The cutter roller 22 at the feeding end can rotate at a lower speed to achieve initial crushing, while the other cutter rollers 22 can rotate at a higher speed to achieve fine opening.

[0030] The cutter roller 22 is provided with a detachable cutter 221. Multiple sets of cutters 221 are provided along the circumference and axial direction of the cutter roller 22, and the cutters 221 on adjacent cutter rollers 22 are staggered. The material of the cutter 221 can be silicon nitride ceramic.

[0031] like Figure 4 As shown, the cutter roller 22 is provided with a mounting ring for connecting the cutter 221. The cutter 221 can be mounted on the mounting ring of the cutter roller 22 by bolts. The cutter 221 is not only evenly distributed in the circumferential and axial directions of a single cutter roller 22, but more importantly, the cutters 221 on adjacent cutter rollers 22 are staggered, so that when the cutter rollers 22 rotate in opposite directions, the cutters 221 can form a strong shearing and tearing action, thereby greatly improving the opening efficiency and quality of compressed plastic bags.

[0032] The detachable connection of the cutter 221 to the mounting ring of the cutter roller 22, and the magnetic quick-release cover and built-in transparent observation window of the inspection port 512 of the discharge cylinder 51, make it possible to replace the cutter 221 and inspect and clean its internal condition without complicated disassembly and assembly. This effectively solves the problems of long equipment maintenance downtime and difficulty in monitoring the internal condition, significantly improves equipment utilization and improves the working environment.

[0033] The discharge assembly 5 includes an inclined discharge cylinder 51, a discharge shaft 52 coaxially arranged inside the discharge cylinder 51, and spirally arranged blades 521 on the discharge shaft 52. The end of the discharge shaft 52 extends out of the discharge cylinder 51 and is rotatably connected to the discharge cylinder 51. One end of the discharge shaft 52 is provided with a rotary drive 53, which drives the discharge shaft 52 to drive the blades 521 to rotate continuously, so as to smoothly and forcibly discharge the loose material falling into the collection hopper 4 from the discharge port 511.

[0034] The rotary drive component 53 is fixedly connected to the frame 1. The rotary drive component 53 can use a servo motor. The discharge cylinder 51 has a discharge port 511 at the higher end, and an inspection port 512 is opened on the cylinder wall of the discharge cylinder 51. The inspection port 512 is equipped with a magnetic quick-release cover plate. A transparent observation window is embedded in the inner side of the cover plate, which is convenient for cleaning accidental blockages or performing maintenance without stopping the machine for inspection, thus improving the utilization rate of the equipment.

[0035] In this embodiment, multiple parallel cutter rollers 22, each driven by an independent motor, allow for differentiated speed adjustment. Combined with staggered cutters 221, they form a highly efficient shearing and tearing action when rotating in opposite directions, which can quickly and completely loosen the compacted plastic bag. Through the inclined spiral conveying mechanism in the discharge assembly 5, the independent rotary drive component 53 provides power, which can actively and continuously force the loosened material out, fundamentally solving the problem of easy clogging in traditional gravity discharge.

[0036] Example 2 During use, uneven feeding or sudden changes in material characteristics can easily lead to material buildup and blockage inside the equipment. To solve the above technical problem, in another embodiment of this utility model, such as... Figures 1 to 6 As shown, the unpacking assembly 2 is provided with a lifting assembly 6 on the side near the feed inlet 31. The lifting assembly 6 includes a movable plate 61 that can be raised and lowered. The movable plate 61 is configured to rise when material piles up above the unpacking assembly 2 to block the feeding of material into the feed inlet 31.

[0037] The movable plate 61 has an ear plate 611 on its side, and a linear drive 62 is provided at the bottom of the ear plate 611 and connected to the output end of the linear drive 62. The linear drive 62 can drive the movable plate 61 to rise and fall. The linear drive 62 can be a cylinder.

[0038] The protective housing 3 is equipped with a detection component 7 for detecting the stacking status. The detection component 7 is signal connected to the linear drive 62 and is configured to trigger the linear drive 62 to push the moving plate 61 upward when the stacking is detected.

[0039] The detection component 7 includes a movable sensing plate 71, which is located in the area above the opening component 2 where material accumulation is likely to occur. When material accumulation occurs above the opening component 2, the accumulated material presses against the sensing plate 71. The detection component 7 generates a control signal based on the displacement or pressure change of the sensing plate 71 and triggers the linear drive 62 to operate.

[0040] When the material accumulates to a certain height and presses against the sensing plate 71, a signal is triggered through the connected pneumatic circuit or displacement sensor. The linear drive 62 then receives the signal and pushes the moving plate 61 upward, promptly blocking the entry of subsequent material and buying time to process the accumulated material. After the material accumulation is resolved, the moving plate 61 can automatically descend after a delay to resume feeding. The detection component 7 can also use electronic detection methods such as pressure sensors or photoelectric sensors to achieve more precise control.

[0041] The detection component 7 may also include a detection cylinder, which is located on the top of the sensing plate 71. The detection cylinder is equivalent to a pneumatic signal valve. When material accumulation occurs, the detection cylinder is pushed by the sensing plate 71. The detection cylinder instantly opens a pilot-operated fast exhaust valve, allowing the external main air source to quickly enter the linear drive 62, pushing the lifting plate to rise. When resetting, exhaust is performed through a small solenoid valve or mechanical valve.

[0042] During operation, the compacted plastic bag is fed into the feed inlet 31 and falls between multiple high-speed rotating cutter rollers 22 with staggered blades 221. It is quickly torn open and loosened. The loose material falls into the discharge assembly 5 through the bottom collection hopper 4 and is forcibly conveyed to the next process by the spirally arranged blades 521. If the feeding is too fast and the material accumulates above the bag opening assembly 2, the detection assembly 7 will act quickly to trigger the lifting assembly 6 to raise the moving plate 61 to block the feeding. At the same time, the system can issue an alarm or link the control to slow down the main motor, thereby effectively protecting the equipment.

[0043] In this embodiment, by independently controlling the rotation speed of the cutter rollers 22 at the feeding and discharging ends, the adaptability of the equipment to different materials and the stability of the opening effect throughout the entire working life are significantly improved. Through the linkage design of the detection component 7 with sensing plate 71 set in the easy-to-stall area above the opening component 2 and the lifting component 6 driven by the linear drive 62, when the stacked material squeezes the sensing plate 71, the lifting plate rises to block the feeding. Combined with the inclined setting of the discharge component 5, which is driven by the rotary drive 53 to drive the spirally arranged blades 521 for forced conveying, the problem of internal material jamming caused by uneven feeding or poor discharge in traditional opening machines is effectively solved, ensuring the continuous and stable operation of the production process.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-axis bag opener for recycling recycled plastics, characterized in that, It includes a rack (1) and an unpacking assembly (2) disposed on the rack (1). The unpacking assembly (2) includes a box (21) and at least two parallel cutter rollers (22) rotatably connected to the box (21). The box (21) is also provided with a drive mechanism (23) for independently driving each cutter roller (22) to rotate, so that the rotation speed of each cutter roller (22) can be adjusted differently. The top of the opening assembly (2) is provided with a protective shell (3) with a feed inlet (31), and the bottom of the opening assembly (2) is provided with a hopper (4) and a discharge assembly (5) connected to the hopper (4). The discharge assembly (5) is configured to convey the opened material outward.

2. The multi-axis pack opening machine according to claim 1, characterized in that, The discharge assembly (5) includes an inclined discharge cylinder (51), a discharge shaft (52) is provided inside the discharge cylinder (51), a spirally arranged blade (521) is provided on the discharge shaft (52), the end of the discharge shaft (52) extends out of the discharge cylinder (51), and a rotary drive (53) is provided at one end of the discharge shaft (52).

3. The multi-axis pack opening machine according to claim 2, characterized in that, The rotary drive (53) is connected to the frame (1), and the discharge cylinder (51) has a discharge port (511) at the higher end, and an inspection port (512) is opened on the cylinder wall of the discharge cylinder (51).

4. The multi-axis pack opening machine according to claim 1, characterized in that, The cutter roller (22) is provided with detachable cutter (221). Multiple sets of cutter (221) are provided along the circumference and axial direction of the cutter roller (22), and the cutter (221) on adjacent cutter rollers (22) are staggered.

5. The multi-axis pack opening machine according to claim 1, characterized in that, The drive mechanism (23) includes an independent motor connected to the end of each of the cutter rollers (22).

6. The multi-axis pack opening machine according to claim 1, characterized in that, The unpacking assembly (2) has a lifting assembly (6) on the side near the feed inlet (31). The lifting assembly (6) includes a movable plate (61) that can be raised and lowered. The movable plate (61) is configured to rise when a pile of material appears above the unpacking assembly (2) to block the feeding of the feed inlet (31).

7. The multi-axis pack opening machine according to claim 6, characterized in that, The movable plate (61) has an ear plate (611) on its side, and a linear drive (62) is provided at the bottom of the ear plate (611). The linear drive (62) can drive the movable plate (61) to rise and fall.

8. The multi-axis pack opening machine according to claim 7, characterized in that, The protective shell (3) is provided with a detection component (7) for detecting the stacking condition. The detection component (7) is signal connected to the linear drive (62) and is configured to trigger the linear drive (62) to push the moving plate (61) up when the stacking is detected.

9. The multi-axis pack opening machine according to claim 8, characterized in that, The detection component (7) includes a movable sensing plate (71) which is located in an area above the unpacking component (2) where material accumulation is likely to occur.

10. The multi-axis pack opening machine according to claim 9, characterized in that, When material piles up above the opening assembly (2), the piled material presses against the sensing plate (71). The detection assembly (7) generates a control signal based on the displacement or pressure change of the sensing plate (71) and triggers the linear drive (62) to operate.

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