Flat bag material packaging box sorting machine

Abstract

This utility model provides a flat bag packaging box sorting machine, including a frame, a lifting and feeding mechanism, a sorting mechanism, a suction mechanism, and a distribution mechanism. The distribution mechanism includes a sorting belt and multiple stacking units arranged vertically at intervals. The sorting belt includes multiple side-by-side distribution belts arranged horizontally. Each stacking unit includes multiple stacking troughs arranged horizontally at intervals. The sorting mechanism has multiple sorting channels arranged horizontally at intervals. The discharge end of the sorting belt is oscillating around its inlet end. In this way, the sorting mechanism separates the originally dispersed bags into various sorting channels for transport. Under the action of the suction mechanism, each bag is transferred to its respective side-by-side distribution belt, and then falls sequentially into the stacking troughs via the distribution belts. This automates the stacking process, significantly improving stacking efficiency and accuracy, and reducing labor costs. Furthermore, by oscillating the direction of the sorting belt, the utilization rate of multiple stacking units can be improved, further enhancing stacking efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of snack food production and processing equipment, and in particular to a flat bag packaging box sorting machine. Background Technology

[0002] With the rapid development of the snack food industry, the market demand for small pre-packaged snacks continues to grow. These products are usually packaged in boxes in a multi-layered stack, with each box containing a fixed number of ingredient packets, which must be aligned and neatly arranged. Currently, the mainstream production method still relies on manual operation, which is frequent and prone to errors. The rising labor costs cannot keep up with high-speed production, and manual stacking is also prone to misalignment and curling, causing problems such as boxing jams or packaging damage.

[0003] Therefore, it is necessary to propose a flat bag packaging box sorting machine to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0004] The main purpose of this utility model is to provide a flat bag packaging box sorting machine to solve the problems of the existing stacking method relying on manual labor, which is prone to errors and has poor stacking effect.

[0005] To achieve the above objectives, this utility model provides a flat bag packaging box sorting machine, including a frame and a lifting and feeding mechanism, a sorting mechanism, a suction mechanism, and a dispensing mechanism connected to the frame; wherein,

[0006] The material distribution mechanism includes a material distribution belt and multiple stacking units arranged vertically at intervals. The material distribution belt includes multiple transversely arranged parallel distribution belts, and each stacking unit includes multiple transversely spaced stacking grooves.

[0007] The material handling mechanism has multiple material handling channels arranged side by side in the transverse direction. The discharge end of the lifting and feeding mechanism is connected to the inlet end of the material handling channel. The suction mechanism has a hinge end and a suction end. The hinge end is located between the distribution belt and the discharge end of the material handling channel. The suction end is rotatably arranged around the hinge end. Each distribution belt has a material handling channel and a stacking trough connected to both ends. The distribution belt runs longitudinally, and the discharge end of the distribution belt is swaying around its inlet end.

[0008] Preferably, the suction mechanism includes a rotating shaft, a rotating arm, a mounting rod, a rotary motor, and a plurality of suction nozzles spaced laterally. The rotating shaft is hinged to the frame and positioned between the distribution belt and the discharge end of the material handling channel. The first end of the rotating shaft extends out of the frame to connect with the drive end of the rotary motor. One end of the rotating arm is fixedly connected to the rotating shaft. The mounting rod is connected to the other end of the rotating arm and is rotatably mounted. The suction nozzles are connected to the mounting rod, and each material handling channel has one corresponding suction nozzle.

[0009] Preferably, the feeding mechanism further includes a timing belt and two displacement timing pulleys. The second end of the rotating shaft and one end of the mounting rod are respectively connected to one of the displacement timing pulleys, and the two displacement timing pulleys are connected by the timing belt drive.

[0010] Preferably, the material distribution mechanism further includes a horizontally placed transition belt, which is connected to the frame and rotates longitudinally. The two ends of the transition belt are respectively connected to the discharge end of the material handling channel and the feed end of the material distribution belt.

[0011] Preferably, the material distribution mechanism further includes a swing-angle electric cylinder, the bottom end of which is connected to the bottom of the frame, the drive end of which is hinged to the distribution belt, and the drive end of which is telescopically configurable.

[0012] Preferably, the material handling channel is inclined downwards along the direction from its own feed end to its own discharge end.

[0013] Preferably, the material handling mechanism further includes an upper sweeping wheel and a lower sweeping wheel, both of which are rotatably connected to the frame. Both the upper and lower sweeping wheels are positioned above the material handling channel, and a material handling gap is formed between the lowest rotating positions of the upper and lower sweeping wheels and the material handling channel.

[0014] Preferably, it further includes a return material mechanism, which includes a return material belt and baffles. The baffles are connected to both sides of the return material belt. The return material belt is arranged in a multi-segment bent shape, including a first return material segment, a second return material segment, and a third return material segment that are connected in sequence. The first return material segment is located to the side of the lifting and feeding mechanism, and the discharge end of the first return material segment is connected to the lifting and feeding mechanism. The second return material segment is spaced below the suction mechanism, and the third return material segment is spaced below the bottommost stacking unit.

[0015] Preferably, the number of stacking units is two, and the two stacking units are arranged at a vertical interval.

[0016] Preferably, it also includes baffles, with one baffle connected to the discharge end of each of the material handling channels.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model provides a flat bag packaging box sorting machine, including a frame and a lifting and feeding mechanism, a sorting mechanism, a suction mechanism, and a separating mechanism connected to the frame. The sorting mechanism includes a sorting belt and multiple stacking units arranged vertically at intervals. The sorting belt includes multiple side-by-side side-by-side side-by-side belts. Each stacking unit includes multiple stacking grooves arranged horizontally at intervals. The sorting mechanism has multiple side-by-side sorting channels arranged horizontally at intervals. The discharge end of the lifting and feeding mechanism is connected to the inlet end of the sorting channel. The suction mechanism has a hinge end and a suction end. The hinge end is located between the side-by-side belt and the discharge end of the sorting channel, and the suction end is rotatably arranged around the hinge end. Each side-by-side belt has a sorting channel and a stacking groove connected to its two ends. The side-by-side belts rotate longitudinally, and the discharge end of the side-by-side belt is swaying around its inlet end. In this way, the originally scattered packages are separated into various material handling channels for transportation by the material handling mechanism. Under the action of the suction mechanism, the packages are transferred one by one to the respective distribution belts, and then fall into the stacking troughs in sequence by the distribution belts. This automates the stacking process, greatly improves the stacking efficiency and accuracy, and reduces labor costs. Furthermore, by swinging the direction of the distribution belts, the utilization rate of multiple stacking units can be improved, thereby further improving the stacking efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure in one embodiment of the present utility model;

[0021] Figure 2 This is a simplified schematic diagram of the overall structure of this utility model in one embodiment, illustrating an application scenario.

[0022] Figure 3 This is a three-dimensional schematic diagram of the overall structure from another perspective in one embodiment of the present utility model;

[0023] Figure 4 This is a partial schematic diagram of the suction mechanism in one embodiment of the present invention;

[0024] Figure 5 This is a partial schematic diagram of the material distribution mechanism in one embodiment of the present invention.

[0025] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0026] Explanation of icon numbers:

[0027] 10. Lifting and feeding mechanism; 20. Material handling mechanism; 210. Material handling channel; 211. Baffle; 220. Upper sweeping wheel; 230. Lower sweeping wheel; 30. Suction mechanism; 310. Rotating shaft; 320. Rotating arm; 330. Mounting rod; 340. Rotary motor; 350. Suction nozzle; 360. Synchronous belt; 370. Positioning synchronous pulley; 40. Material distribution mechanism; 410. Material distribution belt; 411. Channel belt; 420. Stacking trough; 430. Transition belt; 440. Swinging cylinder; 50. Return mechanism; 510. First return section; 520. Second return section; 530. Third return section; 540. Baffle plate; 60. Frame; 610. Vision sensor; 620. Counting sensor. Detailed Implementation

[0028] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0029] 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.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] Please see the appendix Figure 1-5 This utility model provides a flat bag packaging box sorting machine according to one embodiment, including a frame 60 and a lifting and feeding mechanism 10, a sorting mechanism 20, a suction mechanism 30, and a distributing mechanism 40 connected to the frame 60. First, it should be noted that in this application, "lateral" refers to the horizontal width direction of the frame 60, and "longitudinal" refers to the horizontal length direction of the frame 60. For details, please refer to the accompanying drawings. The specific design is as follows:

[0033] The material distribution mechanism 40 includes a material distribution belt 410 and a plurality of stacking units arranged vertically at intervals. The material distribution belt 410 includes a plurality of side-by-side ...

[0034] Specifically, the flat bag packaging box sorting machine in this application includes a frame 60, a lifting and feeding mechanism 10, a sorting mechanism 20, a suction mechanism 30, and a distributing mechanism 40. The frame 60 is used for the installation and connection of other mechanisms. The lifting and feeding mechanism 10 is used for feeding materials, and it can use a lifting conveyor belt to transport the accumulated material bags upwards. Since the material bags are in a messy and loose state when the lifting and feeding mechanism 10 feeds materials, the sorting mechanism 20 is set up to orderly distribute the messy and loose material bags. The material handling mechanism 20 has multiple material handling channels 210 arranged side by side in the horizontal direction, so that the messy and loose material bags fall into each material handling channel 210 respectively. Furthermore, the material handling channel 210 is inclined downward in the direction from its own feed end to its own discharge end, so as to improve the sliding efficiency of the material bags. When the material bags are gradually transported to the end (discharge end) of the material handling channel 210, they are picked up by the suction mechanism 30 and transferred to the material distribution mechanism 40 for the next stacking process.

[0035] The material distribution mechanism 40 includes a material distribution belt 410 and multiple stacking units arranged vertically at intervals. The material distribution belt 410 is used to transport the material bags sucked and operated by the suction mechanism 30 and to deliver the material bags to the stacking units for stacking. Therefore, the hinge end of the suction mechanism 30 is located between the distribution belt 410 and the discharge end of the material handling channel 210. When the suction end moves around the hinge end in an arc-shaped circumference, it can precisely travel back and forth between the distribution belt 411 and the discharge end of the material handling channel 210, thereby forming a suction / discharge movement path. The material distribution belt 410 includes multiple horizontally spaced stacking units. The distribution belts 411 are arranged to receive the material bags from each material handling channel 210. Therefore, to further ensure clear material bag distribution, each stacking unit includes multiple stacking troughs 420 arranged laterally to collect the material bags from each distribution belt 411. Finally, multiple material bags are stacked in each stacking trough 420 to achieve the stacking effect. The discharge end of the distribution belt 410 can also be oscillating around its own inlet end, so that the material bags can be transported to each stacking unit. Preferably, the number of stacking units can be set to two to form two stacking units arranged vertically at intervals.

[0036] In a preferred embodiment of this utility model, the suction mechanism 30 includes a rotating shaft 310, a rotating arm 320, a mounting rod 330, a rotary motor 340, and a plurality of suction nozzles 350 arranged laterally at intervals. The rotating shaft 310 is hinged to the frame 60 and is located between the distribution belt 411 and the discharge end of the material handling channel 210. The first end of the rotating shaft 310 extends out of the frame 60 to be connected to the drive end of the rotary motor 340. One end of the rotating arm 320 is fixedly connected to the rotating shaft 310. The mounting rod 330 is connected to the other end of the rotating arm 320 and is rotatably arranged. The suction nozzles 350 are connected to the mounting rod 330, and each material handling channel 210 is provided with a corresponding suction nozzle 350.

[0037] It should be noted that the rotating shaft 310 is used to realize the rotation of the entire suction mechanism 30, and it is hinged to the frame 60 as the hinge end. The rotating arm 320 is used to connect the mounting rod 330, and the mounting rod 330 is used to mount the suction nozzle 350. The rotary motor 340 is used to drive the rotating shaft 310 to rotate. Thus, when the rotating shaft 310 rotates, it drives the rotating arm 320, the mounting rod 330, and the suction nozzle 350 to move in a circular arc motion together, rotating from the material handling channel 210 to the distribution belt 411. In the initial state, the suction nozzle 350... The suction surface of the nozzle 350 faces the material handling channel 210 to facilitate the suction of the material bag. Therefore, the mounting rod 330 itself needs to be rotatably set so that when the nozzle 350 rotates to the dividing belt 411, the suction surface of the nozzle 350 rotates through the rotation of the mounting rod 330 to rotate to face the dividing belt 411, and then it is released to achieve the purpose of discharging the material. It is worth mentioning that each material handling channel 210 is provided with a corresponding nozzle 350 so that each material bag in the material handling channel 210 is equipped with a separate nozzle 350 for material transfer, and then the material is transferred to the corresponding dividing belt 411.

[0038] In a preferred embodiment of the present invention, the material suction mechanism 30 further includes a synchronous belt 360 and two displacement synchronous pulleys 370. The second end of the rotating shaft 310 and one end of the mounting rod 330 are respectively connected to one of the displacement synchronous pulleys 370, and the two displacement synchronous pulleys 370 are connected by the synchronous belt 360.

[0039] It should be noted that the displacement synchronous pulley 370 facilitates the synchronous rotation of the mounting rod 330 when it rotates with the rotating shaft 310. Therefore, a displacement synchronous pulley 370 is connected to the second end of the rotating shaft 310 and one end of the mounting rod 330, respectively. Specifically, when the rotating shaft 310 rotates, the displacement synchronous pulley 370 mounted on the rotating shaft 310 rotates accordingly. Under the transmission action of the synchronous belt 360, it drives the displacement synchronous pulley 370 mounted on the mounting rod 330 to rotate. At this time, the displacement synchronous pulley 370 mounted on the mounting rod 330 drives the mounting rod 330 to rotate, thereby realizing the rotation of the suction nozzle 350. In this way, it is not necessary to drive the mounting rod 330 to rotate separately. The rotation of the rotating shaft 310 can be used synchronously to achieve the purpose of rotating the suction nozzle 350, thus simplifying the structure.

[0040] In a preferred embodiment of the present invention, the material distribution mechanism 40 further includes a horizontally placed transition belt 430, which is connected to the frame 60 and rotates longitudinally. The two ends of the transition belt 430 are respectively connected to the discharge end of the material handling channel 210 and the feed end of the material distribution belt 410.

[0041] It is worth noting that the transition belt 430 serves as a transition platform for receiving the material bags first, and then transfers the material bags to each distribution belt 410 for distribution. In another preferred embodiment, a vision sensor 610 can be set above the transition belt 430 to form a vision belt, which can identify the head and tail of the material bags. For example, if the material bag is identified as facing up, it is transported to the upper stacking trough 420; if the material bag is identified as facing down, it is transported to the lower stacking trough 420; and if the material bag is identified as bent / folded, it is transported back to the bottom return belt. Therefore, in order to facilitate separate transportation, in this embodiment, each distribution belt 411 can operate independently, that is, independently distribute the material and swing independently, so that after receiving a vision command, it can be specifically transported to the corresponding stacking unit layer or return belt.

[0042] It is worth mentioning that, in another preferred embodiment, a counting sensor 620 can also be set at the discharge end of the distribution belt 411 to count the material bags that have been transported. In this way, when a stacking trough 420 meets the number of material bags required for the packaging box, the stacked material bags can be removed at once by technicians or by other means.

[0043] Furthermore, it also includes a return material mechanism 50, which includes a return material belt and baffle plates 540. The baffle plates 540 are connected to both sides of the return material belt. The return material belt is arranged in a multi-segment bent shape, including a first return material section 510, a second return material section 520 and a third return material section 530 arranged in sequence. The first return material section 510 is arranged to the side of the lifting and feeding mechanism 10, and the discharge end of the first return material section 510 is connected to the lifting and feeding mechanism 10. The second return material section 520 is arranged at intervals below the suction mechanism 30, and the third return material section 530 is arranged at intervals below the bottom stacking unit.

[0044] It should be noted that the return material mechanism 50 is used to recover material bags that have failed to be properly positioned on the conveyor line. It includes a return material belt and baffle plates 540. The return material belt is used for transportation, and the baffle plates 540 are used to prevent material bags from falling from both sides. Therefore, baffle plates 540 are connected to both sides of the return material belt. Because the entire device is large and the various mechanisms are located in different positions, the return material belt is arranged in a multi-segmented, bent shape to facilitate distribution to different areas. It includes a first return material section 510, a second return material section 520, and a third return material section 530 connected in sequence. The first return material section 510 serves as the end of the return process; that is, material bags that fall onto the return material belt ultimately pass through the first return material section 510. The material falls back into the lifting and feeding mechanism 10 and re-enters the production line. Therefore, the discharge end of the first return section 510 is connected to the lifting and feeding mechanism 10. The second return section 520 is used to receive material bags that have not been properly held by the suction mechanism 30. It is spaced below the suction mechanism 30, so that the falling material bags fall into the second return section 520. The third return section 530 is used to receive bent / folded material bags. In the embodiment of the vision belt, after the guide belt 411 receives the bent / folded material bag, it is transported to the third return section 530. In order to avoid the bent / folded material bags returning again, technicians can be arranged next to the third return section 530 to remove the unqualified material bags in time.

[0045] In a preferred embodiment of the present invention, the material distribution mechanism 40 further includes a swing angle electric cylinder 440, the bottom end of which is connected to the bottom of the frame 60, the driving end of which is hinged to the distribution belt 411, and the driving end of which is telescopically configurable.

[0046] It is worth noting that the swing-angle electric cylinder 440 is used to drive the lane belt 411 to swing. Its driving end is hinged to the lane belt 411 to push / pull back the lane belt 411 to swing, thereby realizing the material feeding of different stacking unit layers. In the embodiment using the above-mentioned vision belt, each lane belt 411 needs to be equipped with a corresponding swing-angle electric cylinder 440 so that each lane belt 411 can independently feed materials through its own swing-angle electric cylinder 440 after receiving different vision instructions. For example, when receiving the instruction of the front-facing material bag, it is transported to the upper stacking trough 420; when receiving the instruction of the back-facing material bag, the corresponding swing-angle electric cylinder 440 drives this lane belt 411 to swing towards the lower stacking trough 420 for material feeding; and when receiving the bent / folded material bag, the corresponding swing-angle electric cylinder 440 drives this lane belt 411 to swing to the bottom return belt for material feeding.

[0047] Furthermore, the material handling mechanism 20 also includes an upper sweeping wheel 220 and a lower sweeping wheel 230. The upper sweeping wheel 220 and the lower sweeping wheel 230 are rotatably connected to the frame 60. The upper sweeping wheel 220 and the lower sweeping wheel 230 are both disposed above the material handling channel 210, and the lowest rotating positions of the upper sweeping wheel 220 and the lower sweeping wheel 230 are spaced apart from the material handling channel 210 to form a material handling gap.

[0048] It should be understood that the upper sweeping wheel 220 is used for the first sweeping, sweeping away the haphazardly stacked packages. It is positioned near the high end of the material handling channel 210. If there are still a few packages piled up, the lower sweeping wheel 230 performs a second sweeping to limit the height of the packages falling to the end of the material handling channel 210. The upper sweeping wheel 220 can have a structure with a horizontal plate. The lowest position of the horizontal plate is close to the top of the partition of the material handling channel 210, which is to sweep packages higher than the partition of the material handling channel 210 to the rear. The lower sweeping wheel 230 can be provided with multiple spaced sweeping plates at its end, so that each sweeping plate can extend into each material handling channel 210 to sweep. The lowest position of the sweeping plate forms a material handling gap of at least the height of a package with the bottom of the material handling channel 210 to avoid package jamming and to facilitate the passage of only one package at a time. Please refer to the appendix for details. Figure 3 .

[0049] Furthermore, it also includes a baffle 211, with one baffle 211 connected to the discharge end of each of the material handling channels 210.

[0050] It is understood that the baffle 211 is used to block the material outlet of the material handling channel 210, so that when the material passes through the lower sweeping wheel 230 and rotates to the material outlet of the material handling channel 210, the bags are gradually stacked so that the suction nozzle 350 can pick up and transfer them.

[0051] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A flat bag packaging box sorting machine, characterized in that, It includes a frame and a lifting and feeding mechanism, a material handling mechanism, a material suction mechanism, and a material dispensing mechanism connected to the frame; wherein, The material distribution mechanism includes a material distribution belt and multiple stacking units arranged vertically at intervals. The material distribution belt includes multiple side-by-side distribution belts arranged horizontally. Each stacking unit includes multiple stacking grooves arranged horizontally at intervals. The material handling mechanism has multiple material handling channels arranged side by side in the transverse direction. The discharge end of the lifting and feeding mechanism is connected to the inlet end of the material handling channel. The suction mechanism has a hinge end and a suction end. The hinge end is located between the distribution belt and the discharge end of the material handling channel. The suction end is rotatably arranged around the hinge end. Each distribution belt has a material handling channel and a stacking trough connected to both ends. The distribution belt runs longitudinally, and the discharge end of the distribution belt is swaying around its inlet end.

2. The flat pocket package unscrambler of claim 1, wherein, The material suction mechanism includes a rotating shaft, a rotating arm, a mounting rod, a rotary motor, and multiple suction nozzles spaced laterally. The rotating shaft is hinged to the frame and positioned between the distribution belt and the discharge end of the material handling channel. The first end of the rotating shaft extends out of the frame to connect with the drive end of the rotary motor. One end of the rotating arm is fixedly connected to the rotating shaft. The mounting rod is connected to the other end of the rotating arm and is rotatably mounted. The suction nozzles are connected to the mounting rod, and each material handling channel has one corresponding suction nozzle.

3. The flat pocket package unscrambler of claim 2, wherein, The material suction mechanism also includes a timing belt and two displacement timing pulleys. The second end of the rotating shaft and one end of the mounting rod are respectively connected to one of the displacement timing pulleys, and the two displacement timing pulleys are connected by the timing belt drive.

4. The flat pocket package unscrambler of claim 1, wherein, The material distribution mechanism also includes a horizontally placed transition belt, which is connected to the frame and rotates longitudinally. The two ends of the transition belt are respectively connected to the discharge end of the material handling channel and the feed end of the material distribution belt.

5. The flat bag packaging box sorting machine according to claim 4, characterized in that, The material distribution mechanism also includes a swing-angle electric cylinder, the bottom end of which is connected to the bottom of the frame. The drive end of the swing-angle electric cylinder is hinged to the distribution belt, and the drive end of the swing-angle electric cylinder is telescopically configurable.

6. The flat pocket package unscrambler of claim 1, wherein, The material handling channel is inclined downwards along the direction from its own feed end to its own discharge end.

7. The flat bag packaging box sorting machine according to claim 6, characterized in that, The material handling mechanism further includes an upper sweeping wheel and a lower sweeping wheel. Both the upper sweeping wheel and the lower sweeping wheel are rotatably connected to the frame. Both the upper sweeping wheel and the lower sweeping wheel are located above the material handling channel, and a material handling gap is formed between the lowest rotating position of the upper sweeping wheel and the material handling channel.

8. The flat bag packaging box sorting machine according to claim 7, characterized in that, It also includes a return material mechanism, which includes a return material belt and baffles. The baffles are connected to both sides of the return material belt. The return material belt is arranged in a multi-segment bent shape, including a first return material section, a second return material section, and a third return material section that are connected in sequence. The first return material section is located to the side of the lifting and feeding mechanism, and the discharge end of the first return material section is connected to the lifting and feeding mechanism. The second return material section is spaced below the suction mechanism, and the third return material section is spaced below the bottom stacking unit.

9. The flat bag packaging box sorting machine according to claim 1, characterized in that, The number of stacking units is two, and the two stacking units are arranged at a vertical interval.

10. The flat pocket package unscrambler of claim 7, wherein, It also includes baffles, with one baffle connected to the discharge end of each of the material handling channels.

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