An automatic processing and packaging equipment for green onions

Abstract

This application discloses an automated processing and packaging device for scallions, comprising a conveying mechanism, a leaf-cutting, root-removing, and peeling mechanism, a soil-removing mechanism, a weighing and feeding mechanism, and a packaging mechanism. The leaf-cutting, root-removing, and peeling mechanism uses leaf-cutting blades and root-cutting blades to cut off the leaf tips and roots of the scallions, respectively. A sponge conveyor belt and a segmented conveyor belt have different linear speeds, and air jets are used to remove yellow leaves and the outer aged outer layer of the scallions. The soil-removing mechanism removes soil from the surface of the scallions using spray nozzles. The weighing and feeding mechanism performs cumulative weighing and feeds the scallions into the packaging mechanism via a synchronous belt mechanism and a two-dimensional servo motor gimbal. The packaging mechanism completes the forming of the packaging film, loading, longitudinal heat sealing, transverse heat sealing, and cutting, and uses a vibrator and a tapping mechanism to reduce the accumulation of scallions during feeding and packaging. This invention enables continuous operation of the scallion leaf-cutting, root-removing, peeling, soil-removing, cumulative weighing, and packaging processes.

Description

Technical Field

[0001] This invention relates to the field of agricultural product processing equipment technology, specifically to an automated processing and packaging equipment for scallions. Background Technology

[0002] Currently, post-harvest processing of scallions mainly includes root removal, removal of the outer aged skin, washing, weighing, and packaging. Existing processing methods suffer from high labor intensity, discontinuous process connections, and low processing efficiency. Therefore, achieving continuous automation of the post-harvest processing and packaging of scallions is of great significance for improving processing efficiency and product specification consistency. Chinese utility model patent CN218737112U discloses a scallion peeling machine, including a conveyor belt mechanism, a root cutting mechanism, a peeling mechanism, and a peel blowing mechanism. The peeling mechanism includes a ring-cutting mechanism for circumferentially cutting the outer skin of the scallion root and a peel-blowing mechanism that uses high-pressure airflow to blow open the scallion skin. The peel blowing mechanism is used to remove the outer skin of the scallion. The device can sequentially complete the cleaning, combing, root cutting, ring cutting, peeling and blowing of the scallion roots. However, the following defects still exist in the use process: (1) The device is not equipped with a cumulative weighing and posture adjustment mechanism. After the scallions are processed, they still need to be collected, weighed and sorted manually. It is difficult to automatically group the materials according to the target packaging weight. (2) The device is not equipped with an automatic packaging mechanism that cooperates with the previous processing steps. After peeling, the scallions still need to be manually fed to other equipment for bag making, filling, sealing and cutting. It is impossible to realize the continuous automated processing of scallions from raw material input to packaged finished product output. Summary of the Invention

[0003] In order to solve the technical problems mentioned in the background, the purpose of this invention is to provide a fully automated processing and packaging equipment for scallions, which can realize continuous operation of scallion leaf cutting, root removal, peeling, soil removal, cumulative weighing, feeding and packaging processes.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An automated processing and packaging device for scallions includes a conveying mechanism for carrying and transporting scallions, a leaf-cutting, root-removing, and peeling mechanism located on the conveying mechanism for cutting leaves, removing roots, and peeling scallions, a soil-removing mechanism located behind the leaf-cutting, root-removing, and peeling mechanism along the conveying direction for removing soil from the surface of the scallions, a weighing and feeding mechanism located below the discharge side of the soil-removing mechanism for weighing and feeding the scallions, and a packaging mechanism located on one side of the weighing and feeding mechanism for packaging the scallions. The leaf-cutting, root-removing, and peeling mechanism and the soil-removing mechanism are arranged sequentially along the conveying direction of the scallions. The weighing and feeding mechanism receives the scallions after soil removal and, after the received scallions reach the target packaging weight, turns the scallions and feeds them into the packaging mechanism. The packaging mechanism is used to complete the forming of the packaging film, filling, vertical heat sealing, horizontal heat sealing, and cutting.

[0005] As a further improvement to the above technical solution: The conveying mechanism includes a segmented conveyor belt, a brush roller, a bushing, and a conveying drive motor connected to the segmented conveyor belt. The segmented conveyor belt includes several conveyor belt bodies arranged at intervals, with discharge gaps formed between adjacent conveyor belt bodies. The discharge gaps are used to allow the cut roots, leaves, and peeled outer aged epidermis to fall downwards, and to block the continuous propagation of airflow and water along the belt surface. The brush roller is located on one side of the segmented conveyor belt and contacts the belt surface to remove water adhering to the belt surface. The bushing is located on the conveyor roller of the segmented conveyor belt to limit the axial displacement of the conveyor belt body along the conveyor roller.

[0006] The leaf-cutting, root-removing, and peeling mechanism includes leaf-cutting blades, a sponge conveyor belt, air nozzles, a manifold, a photoelectric sensor, a root-cutting blade, a sponge conveyor belt drive motor, a leaf-cutting blade motor, and a root-cutting blade motor. The leaf-cutting blade and root-cutting blade are respectively positioned to correspond to the leaf and root ends of the scallion. The leaf-cutting blade motor is driven by the leaf-cutting blade and drives it to rotate. The root-cutting blade motor is also driven by the root-cutting blade and drives it to rotate, thereby removing the leaf ends and roots of the scallion as it moves along the segmented conveyor belt. The sponge conveyor belt is positioned above the segmented conveyor belt and forms a clamping and conveying area between it and the segmented conveyor belt for the scallion to pass through. The sponge conveyor belt drive motor is driven by the sponge conveyor belt. The manifold is positioned on one side of the clamping and conveying area, and multiple air nozzles are spaced apart on the manifold and positioned towards the clamping and conveying area to spray airflow onto the surface of the scallion to remove yellow leaves and the outer aged outer skin.

[0007] Preferably, the sponge conveyor belt and the segmented conveyor belt have different linear velocities, so that the scallion held between the sponge conveyor belt and the segmented conveyor belt rotates around its own axis while moving along the conveying direction, so that the airflow ejected from the multiple nozzles can act on different positions on the outer periphery of the scallion.

[0008] Preferably, the photoelectric sensor is located in front of the jet area corresponding to the jet nozzle, with the detection end of the photoelectric sensor facing the clamping and conveying area, and the signal output end of the photoelectric sensor is electrically connected to the signal input end of the control system; a solenoid valve is provided on the air supply pipeline corresponding to the jet nozzle, and the solenoid valve is electrically connected to the control output end of the control system; the photoelectric sensor is used to detect whether the scallion has entered the jet area and sends the detection signal to the control system, and the control system controls the solenoid valve to open or close according to the detection signal, so as to control the on / off of the air supply pipeline corresponding to the jet nozzle.

[0009] The soil removal mechanism includes a waterproof cover, multiple spray nozzles, and a water-blocking curtain. The waterproof cover is positioned above the conveying mechanism, forming a cleaning area for the scallions to pass through. The multiple spray nozzles are located inside the waterproof cover and face the conveying mechanism, used to spray cleaning water onto the scallions passing through the cleaning area. The water-blocking curtains are located at the inlet and outlet ends of the waterproof cover, respectively, used to allow the scallions to pass through while restricting the cleaning water from splashing outside the waterproof cover.

[0010] Preferably, the water-blocking curtain is a flexible curtain body, which can push the water-blocking curtain to deform when the scallions pass through, and return to a hanging state after the scallions pass through.

[0011] The weighing and feeding mechanism includes a lifting frame, a synchronous belt mechanism for driving the lifting frame to move vertically, a two-dimensional servo motor gimbal mounted on the lifting frame, a weight sensor mounted on the two-dimensional servo motor gimbal, and a receiving tray connected to the weight sensor. The receiving tray is used to receive the scallions output after being cleaned by the soil removal mechanism. The weight sensor is used to detect the weight of the receiving tray and the scallions inside. The two-dimensional servo motor gimbal is used to drive the receiving tray to rotate horizontally and flip vertically. The synchronous belt mechanism is used to adjust the height of the receiving tray so that it can move vertically within the area between the discharge position of the soil removal mechanism and the feed position of the packaging mechanism.

[0012] The synchronous belt mechanism includes a linear bearing, a synchronous belt, a slider connector, and a synchronous pulley. The linear bearing is mounted on the fixed frame of the weighing and feeding mechanism in the vertical direction. The synchronous belt is wound around the synchronous pulley. The slider connector is connected to the synchronous belt and the lifting frame. When the synchronous pulley drives the synchronous belt to move, the synchronous belt drives the lifting frame to move along the guide direction of the linear bearing through the slider connector.

[0013] Preferably, the receiving tray has a U-shaped groove structure, and guide portions are formed on both sides of the receiving tray to restrict the lateral rolling of the scallions, so that the scallions falling into the receiving tray gather towards the center of the receiving tray.

[0014] Preferably, the two-dimensional servo gimbal includes a yaw drive unit and a pitch drive unit. The yaw drive unit is used to drive the receiving tray to rotate in the horizontal plane so that the discharge direction of the receiving tray is towards the packaging mechanism. The pitch drive unit is used to drive the receiving tray to flip to one side of the packaging mechanism so as to pour the scallions in the receiving tray into the packaging mechanism.

[0015] The packaging mechanism includes a film roller, a bag maker, a film stretching assembly, a vertical heat sealing assembly, a horizontal heat sealing assembly, and a feeding ramp. The film roller is used to install the packaging film roll. The bag maker is used to guide the unfolded packaging film to bend into a cylindrical bag. The film stretching assembly is used to clamp the packaging film and move it downward along the bag maker. The vertical heat sealing assembly is used to heat seal the vertical overlap of the packaging film. The horizontal heat sealing assembly is used to horizontally heat seal the cylindrical bag and cut the packaged bag. The feeding ramp is located below the horizontal heat sealing assembly and is used to receive the cylindrical bag containing scallions that is only waiting for the final horizontal heat sealing and cutting, and to smoothly output it. This prevents the packaging bag and the scallions inside from getting stuck on the ground when they descend vertically, which would cause the packaging film above to wrinkle and accumulate, affecting the subsequent horizontal heat sealing and cutting.

[0016] Preferably, the film-stretching assembly includes two oppositely arranged film-feeding wheels, a cylindrical gear respectively driven by the two film-feeding wheels, a film-stretching drive motor for driving the cylindrical gear to rotate, a mounting plate for mounting the film-stretching drive motor, and a bearing seat for rotatably supporting the shaft of the film-feeding wheels; the shaft of the film-feeding wheels is rotatably mounted in the bearing seat, and a film-stretching channel for the packaging film to pass through is formed between the two film-feeding wheels; the film-stretching drive motor drives the two film-feeding wheels to rotate in opposite directions through the meshing cylindrical gears, so that the packaging film moves downward along the bag-making device.

[0017] Preferably, the vertical heat sealing assembly includes a vertical heat sealing heating mold, a first flange linear bearing, a first guide rod, and a first cylinder. The vertical heat sealing heating mold is movably mounted on the first guide rod via the first flange linear bearing. The first cylinder is connected to the vertical heat sealing heating mold and is used to drive the vertical heat sealing heating mold to approach or move away from the vertical overlap portion of the packaging film.

[0018] Preferably, the transverse heat sealing assembly includes a positioning plate, a second cylinder, a second guide rod, a cylinder mounting plate, a transverse heat sealing mounting plate, a second flange linear bearing, a transverse heat sealing heating mold, a blade mounting plate, and a transverse heat sealing blade; the two transverse heat sealing heating molds are arranged opposite each other on both sides of the cylindrical bag body, and can move closer or further apart under the drive of the second cylinder; the transverse heat sealing blade is arranged on the blade mounting plate and is used to cut the packaging bag after transverse heat sealing.

[0019] Preferably, the packaging mechanism further includes a vibrator and a tapping mechanism. The vibrator is located on the side close to the bag maker and is used to drive the bag maker to vibrate, thereby reducing the frictional resistance between the scallions and the bag maker. The tapping mechanism is located below the bag maker and below the transverse heat sealing assembly, above the feeding slope, and is used to periodically tap the cylindrical bag containing the scallions to promote the movement of the scallions to the bottom of the cylindrical bag.

[0020] Preferably, the beating mechanism includes a clapper, a crank, a connecting rod, a rocker arm, a clapper mounting plate, and a beating drive motor. The output end of the beating drive motor is connected to the crank, the crank is connected to the rocker arm via the connecting rod, and the clapper is connected to the rocker arm. When the beating drive motor drives the crank to rotate, the crank drives the rocker arm to swing back and forth via the connecting rod, so that the clapper reciprocates to beat the cylindrical bag.

[0021] Preferably, the equipment further includes an electrical control box mounted on the frame, which houses a control system. The weight sensor and photoelectric sensor are electrically connected to the signal input terminal of the control system. The conveyor drive motor, sponge conveyor belt drive motor, leaf cutting blade motor, root cutting blade motor, synchronous belt mechanism, two-dimensional servo gimbal, packaging mechanism, and solenoid valve located on the air supply pipeline of the jet nozzle are electrically connected to the control output terminal of the control system. The control system is used to set the target packaging weight and receive the weight detection signal sent by the weight sensor and the green onion detection signal sent by the photoelectric sensor. When the photoelectric sensor detects that the green onion has entered the jet area, the control system controls the solenoid valve to open, causing the jet nozzle to spray airflow onto the surface of the green onion. When the photoelectric sensor detects that the green onion has left the jet area, the control system controls the solenoid valve to close. When the weight sensor detects that the cumulative weight of the green onion in the receiving tray has reached the target packaging weight, the control system controls the conveyor mechanism to stop conveying the green onion to the receiving tray and controls the synchronous belt mechanism and the two-dimensional servo gimbal to move sequentially, causing the receiving tray to move to the position corresponding to the packaging mechanism and sending the green onion in the receiving tray into the packaging mechanism.

[0022] Preferably, the control system is connected to a touch screen, which is used to input the target packaging weight and equipment operating parameters, so that the target packaging weight can be adjusted according to the packaging specifications.

[0023] The present invention has the following beneficial effects: 1. The above-mentioned conveying mechanism, leaf cutting, root removal, peeling, soil removal, weighing and feeding mechanism and packaging mechanism are interconnected, which can sequentially complete the leaf cutting, root removal, removal of yellow leaves and outer aged skin, soil removal, cumulative weighing, feeding and packaging of scallions, reducing manual handling and material transfer between each process.

[0024] 2. The above-mentioned sponge conveyor belt and segmented conveyor belt have different linear speeds, which makes the scallions rotate around their own axis during the clamping and conveying process. In conjunction with multiple air nozzles set along the conveying path, the airflow can act on different positions on the outer periphery of the scallions, thereby increasing the removal range of yellow leaves and outer aged skin.

[0025] 3. The above-mentioned segmented conveyor belt allows the cut-off roots, leaves and peeled outer aged skin to be discharged from the conveying path through the discharge gap between adjacent conveyor belts, and can reduce the impact of airflow and water flow on adjacent workstations by continuously spreading along the belt surface.

[0026] 4. The above-mentioned soil removal mechanism uses a waterproof cover and a water curtain to enclose the cleaning area, so that the scallions can be sprayed and cleaned during the transportation process, and the amount of cleaning water splashing outside the equipment is reduced.

[0027] 5. The weighing and feeding mechanism described above, through the cooperation of a weight sensor, a synchronous belt mechanism, a two-dimensional servo motor gimbal, and a receiving tray, can cumulatively weigh the scallions according to the target packaging weight, and feed the scallions from the soil removal mechanism into the packaging mechanism through lifting, horizontal turning, and flipping actions.

[0028] 6. The vibrator and the tapping mechanism mentioned above apply vibration and tapping action to the bag maker and the cylindrical bag body, which can reduce the retention, stacking and bridging of long strips of green onions during the feeding and packaging process, and reduce the possibility of material clamping during the transverse heat sealing process. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an automated processing and packaging equipment for scallions according to the present invention; Figure 2 This is a schematic diagram of the conveying mechanism structure of the present invention; Figure 3 This is a first-view structural schematic diagram of the leaf-cutting, root-removing, and peeling mechanism of the present invention: Figure 4 This is a second-view structural schematic diagram of the leaf-cutting, root-removing, and peeling mechanism of the present invention: Figure 5 This is a first-view structural schematic diagram of the soil removal mechanism of the present invention: Figure 6 This is a second-view structural schematic diagram of the soil removal mechanism of the present invention: Figure 7This is a schematic diagram of the weighing and feeding mechanism of the present invention: Figure 8 This is a first-view structural diagram of the packaging mechanism of the present invention: Figure 9 This is a second-view structural diagram of the packaging mechanism of the present invention: Figure 10 This is a third-view structural diagram of the packaging mechanism of the present invention; Figure 11 This is a schematic diagram of the striking mechanism of the present invention; Figure 12 This is a schematic diagram of the membrane assembly structure of the present invention; Figure 13 This is a schematic diagram of the vertical heat-sealing assembly structure of the present invention; Figure 14 This is a schematic diagram of the transverse heat-sealing assembly structure of the present invention; The diagram shows: 1. Conveying mechanism; 2. Leaf cutting, root removal, and peeling mechanism; 3. Soil removal mechanism; 4. Weighing and feeding mechanism; 5. Packaging mechanism; 6. Electrical control box; 11. Segmented conveyor belt; 12. Brush roller; 13. Bushing; 14. Conveyor drive motor; 21. Leaf cutting blade; 22. Sponge conveyor belt; 23. Air nozzle; 24. Combustion plate; 25. Photoelectric sensor; 26. Root cutting blade; 27. Sponge conveyor belt drive. 28. Motor; 29. ​​Leaf-cutting blade motor; 31. Root-cutting blade motor; 32. Spray nozzle; 33. Water curtain; 34. Waterproof cover; 45. Synchronous belt mechanism; 46. Weight sensor; 47. Two-dimensional servo motor gimbal; 48. Material receiving tray; 49. Linear bearing; 40. Synchronous belt; 412. Slider connector; 413. Synchronous pulley; 51. Bag maker; 52. Bag film roller; 53. Vertical heat sealing assembly; 54. Film stretching assembly. Assembly; 55. Lateral heat sealing assembly; 56. Tapping mechanism; 57. Feeding slope; 58. Vibrator; 59. Touch screen; 531. Vertical heat sealing heating mold; 532. First flange linear bearing; 533. First guide rod; 534. First cylinder; 541. Driven cylindrical gear; 542. Film feeding wheel; 543. Film pulling drive motor; 544. Drive cylindrical gear; 545. Mounting plate; 546. Bearing seat; 551. Positioning plate; 552. Second cylinder; 553. Second guide rod; 554. Cylinder mounting plate; 555. Transverse heat sealing mounting plate; 556. Second flange linear bearing; 557. Transverse heat sealing heating mold; 558. Blade mounting plate; 559. Transverse heat sealing blade; 561. Patting plate; 562. Crank; 563. Connecting rod; 564. Rocker arm; 565. Patting plate mounting plate; 566. Patting drive motor. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings.

[0031] Example 1: To address the problems identified in the background section of the prior art, this invention discloses an automated processing and packaging equipment for scallions, comprising a conveying mechanism 1 for carrying and transporting scallions, a leaf-cutting, root-removing, and peeling mechanism 2 for cutting leaves, removing roots, and peeling the scallions, a soil-removing mechanism 3 for removing soil from the surface of the scallions, a weighing and feeding mechanism 4 for weighing and feeding the scallions, a packaging mechanism 5 for packaging the scallions, and an electrical control box 6 located at the bottom of the frame.

[0032] Because of the above-mentioned features, this invention can enable scallions to continuously complete the processes of leaf cutting, root removal, peeling, soil removal, cumulative weighing, feeding, and packaging through the sequential cooperation of the conveying mechanism 1, the leaf cutting, root removal, peeling, soil removal, and packaging mechanism 2, the soil removal mechanism 3, the weighing and feeding mechanism 4, and the packaging mechanism 5. The control system in the electrical control box 6 controls the detection, conveying, air spraying, weighing, feeding, and packaging actions, thereby reducing manual handling and material transfer between processing steps and improving the continuity of the scallion processing.

[0033] The following describes in detail the specific implementation methods for achieving the above-mentioned technical features and the effects that can be further produced.

[0034] like Figure 2 As shown, the conveying mechanism 1 includes a segmented conveyor belt 11, a brush roller 12, a bushing 13, and a conveyor drive motor 14. The segmented conveyor belt 11 is arranged along the processing direction of the scallions. The conveyor drive motor 14 is connected to the drive roller of the segmented conveyor belt 11 for driving the segmented conveyor belt 11 in a cyclical motion. The segmented conveyor belt 11 includes two conveyor belt bodies that extend along the conveying direction and are spaced apart along the axial direction of the conveyor roller. A discharge gap is formed between adjacent conveyor belt bodies, allowing the cut roots, leaves, and peeled outer aged skin to fall downward through the discharge gap, while reducing the rebound of the airflow and the continuous propagation of the cleaning water along the entire belt surface.

[0035] The brush roller 12 is positioned below and in contact with the surface of the segmented conveyor belt 11. As the segmented conveyor belt 11 passes over the brush roller 12, the brush roller 12 removes the water adhering to the belt surface, thereby reducing the water flow from the segmented conveyor belt 11 to other workstations. The bushing 13 is fitted onto the conveyor roller of the segmented conveyor belt 11 and is respectively located on both sides of the corresponding conveyor belt body. It is used to restrict the axial movement of the conveyor belt body along the conveyor roller and reduce the possibility of the segmented conveyor belt 11 running off-center during operation.

[0036] like Figure 3 and Figure 4As shown, the leaf-cutting, root-removing, and peeling mechanism 2 includes a leaf-cutting blade 21, a sponge conveyor belt 22, an air nozzle 23, a manifold 24, a photoelectric sensor 25, a root-cutting blade 26, a sponge conveyor belt drive motor 27, a leaf-cutting blade motor 28, and a root-cutting blade motor 29. The leaf-cutting blade 21 and root-cutting blade 26 are respectively located on both sides of the segmented conveyor belt 11 along the length of the scallion, corresponding to the leaf and root ends of the scallion. The leaf-cutting blade motor 28 is driven by the leaf-cutting blade 21 to drive its rotation; the root-cutting blade motor 29 is driven by the root-cutting blade 26 to drive its rotation. As the scallion passes through the cutting area along the segmented conveyor belt 11, the leaf-cutting blade 21 removes the yellow and withered leaves from the scallion leaf ends, and the root-cutting blade 26 removes the scallion root plate and rootlets.

[0037] In this embodiment, both the leaf-cutting blade 21 and the root-cutting blade 26 include multiple circumferentially spaced arc-shaped blades, which form a rotating cutting area during rotation. After the arc-shaped blades come into contact with the scallion, the cutting position gradually changes along the blade contour, causing the scallion leaf tips and root tips to be subjected to a sliding cutting action, thereby completing the removal of the leaf tips and root parts.

[0038] A sponge conveyor belt 22 is positioned above the segmented conveyor belt 11, forming a clamping and conveying area between them for the scallions to pass through. A sponge conveyor belt drive motor 27 is connected to the sponge conveyor belt 22 and drives it in cyclical motion. The surface of the sponge conveyor belt 22 is flexible. After the scallions enter between the sponge conveyor belt 22 and the segmented conveyor belt 11, the sponge conveyor belt 22 compresses accordingly and applies pressure to the scallions, thus limiting their movement and deflection during the air jetting process.

[0039] The sponge conveyor belt 22 and the segmented conveyor belt 11 have different linear velocities. When the scallion is subjected to friction from both the sponge conveyor belt 22 and the segmented conveyor belt 11, it rotates around its own axis while moving along the conveying direction, so that different circumferential surfaces of the scallion can sequentially face the air nozzle 23.

[0040] A manifold 24 is located on one side of the clamping and conveying area. Multiple air nozzles 23 are installed at intervals on the manifold 24 along the conveying direction of the scallions. Each air nozzle 23 is connected to the air supply pipeline through the manifold 24. When the scallions pass through the air jet area, the air nozzles 23 spray high-pressure airflow onto the surface of the scallions. Under the combined action of the high-pressure airflow and the rotation of the scallions, the yellow leaves and the outer aged skin separate from the scallion body.

[0041] A photoelectric sensor 25 is located at the front of the jetting area, with its detection end facing the clamping and conveying area formed between the sponge conveyor belt 22 and the segmented conveyor belt 11. The signal output end of the photoelectric sensor 25 is electrically connected to the signal input end of the control system. A solenoid valve is installed on the air supply pipeline corresponding to the jet nozzle 23, and the solenoid valve is electrically connected to the control output end of the control system. When the front end of the scallion enters the detection range of the photoelectric sensor 25, the photoelectric sensor 25 sends a detection signal to the control system indicating that the scallion has entered the jetting area. After receiving the detection signal, the control system controls the solenoid valve to open, connecting the air supply pipeline to the jet nozzle 23, and the jet nozzle 23 sprays high-pressure airflow onto the surface of the scallion. When the rear end of the scallion leaves the detection range of the photoelectric sensor 25, the photoelectric sensor 25 sends a detection signal to the control system indicating that the scallion has left the jetting area. The control system controls the solenoid valve to close according to the detection signal, thereby stopping the jetting operation of the jet nozzle 23.

[0042] like Figure 5 and Figure 6 As shown, the soil removal mechanism 3 includes spray nozzles 31, a water curtain 32, and a waterproof cover 33. The waterproof cover 33 is positioned above the segmented conveyor belt 11, forming a cleaning area between the waterproof cover 33 and the segmented conveyor belt 11. Multiple spray nozzles 31 are spaced apart within the waterproof cover 33 and connected to a water pump via a water supply pipeline. After the scallions enter the cleaning area along the segmented conveyor belt 11, the spray nozzles 31 spray cleaning water onto the surface of the scallions, separating the soil, broken leaves, and surface residue adhering to the scallion surface from the scallions.

[0043] Water-blocking curtains 32 are respectively installed at the inlet and outlet ends of the waterproof cover 33. In this embodiment, the water-blocking curtains 32 are made of flexible curtains, which can cause the water-blocking curtains 32 to deform when the scallions enter or leave the cleaning area; after the scallions pass through, the water-blocking curtains 32 return to their drooping state under their own gravity. The waterproof cover 33 and the water-blocking curtains 32 together enclose the cleaning area to reduce the splashing of cleaning water to the outside of the equipment.

[0044] like Figure 7 As shown, the weighing and feeding mechanism 4 includes a synchronous belt mechanism 41, a weight sensor 42, a two-dimensional servo motor gimbal 43, and a receiving tray 44. The receiving tray 44 is located above the two-dimensional servo motor gimbal 43 and is used to receive the scallions output by the soil removal mechanism 3. The receiving tray 44 is trough-shaped with its two side edges facing upwards to limit the lateral rolling of the scallions during the receiving and weighing process and to cause multiple scallions to converge towards the center of the receiving tray 44.

[0045] A weight sensor 42 is located between the receiving tray 44 and the two-dimensional servo gimbal 43. The weight of the scallions in the receiving tray 44 is transferred to the weight sensor 42 through the receiving tray 44. The weight sensor 42 is electrically connected to the control system and is used to detect the cumulative weight of the scallions in the receiving tray 44. The control system is set with a target packaging weight, which can be adjusted according to the packaging specifications via the touch screen 59.

[0046] The two-dimensional servo gimbal 43 includes a yaw drive unit and a pitch drive unit that cooperate with each other. The yaw drive unit is used to drive the receiving tray 44 to rotate in the horizontal plane, so that the receiving tray 44 rotates from the receiving direction to the feeding direction facing the packaging mechanism 5; the pitch drive unit is used to drive the receiving tray 44 to flip towards the packaging mechanism 5, so that the scallions in the receiving tray 44 slide off the receiving tray 44 under the action of gravity and enter the packaging mechanism 5. In this embodiment, the receiving tray 44 rotates about 90° in the horizontal plane before facing the packaging mechanism 5.

[0047] The synchronous belt mechanism 41 drives the two-dimensional servo gimbal 43, weight sensor 42, and receiving tray 44 to move vertically. The synchronous belt mechanism 41 includes a linear bearing 411, a synchronous belt 412, a slider connector 413, and a synchronous pulley 414. The linear bearing 411 is mounted vertically on the fixed frame of the weighing and feeding mechanism 4. The slider connector 413 is connected to the lifting frame of the weighing and feeding mechanism 4. The synchronous belt 412 is wound around the synchronous pulley 414 and connected to the slider connector 413. When the synchronous pulley 414 rotates, it drives the synchronous belt 412 to move. The synchronous belt 412, through the slider connector 413, drives the lifting frame to move along the guide direction of the linear bearing 411, thereby changing the height of the receiving tray 44.

[0048] like Figures 8 to 10 As shown, the packaging mechanism 5 includes a bag maker 51, a film roller 52, a vertical heat sealing assembly 53, a film stretching assembly 54, a horizontal heat sealing assembly 55, a tapping mechanism 56, a feeding ramp 57, a vibrator 58, and a touch screen 59. The film roller 52 is rotatably mounted on the frame of the packaging mechanism 5 and is used to mount the packaging film roll. After being released from the film roller 52, the packaging film wraps around the outside of the bag maker 51 and gradually bends under the guidance of the bag maker 51 to form a cylindrical bag. The two vertical edges of the packaging film overlap to form a vertical overlap portion.

[0049] like Figure 13As shown, the vertical heat-sealing assembly 53 includes a vertical heat-sealing heating mold 531, a first flange linear bearing 532, a first guide rod 533, and a first cylinder 534. The first guide rod 533 is mounted on the support structure of the vertical heat-sealing assembly 53. The vertical heat-sealing heating mold 531 is movably mounted on the first guide rod 533 via the first flange linear bearing 532. The output end of the first cylinder 534 is connected to the vertical heat-sealing heating mold 531. When the first cylinder 534 extends, it drives the vertical heat-sealing heating mold 531 to move along the first guide rod 533 and press against the vertical overlap portion of the packaging film, causing the vertical overlap portion to be heated and fused. When the first cylinder 534 retracts, it drives the vertical heat-sealing heating mold 531 away from the packaging film.

[0050] like Figure 12 As shown, the film-stretching assembly 54 includes a driven cylindrical gear 541, film-feeding rollers 542, a film-stretching drive motor 543, a driving cylindrical gear 544, a mounting plate 545, and a bearing seat 546. The shafts of the film-feeding rollers 542 are rotatably supported on the bearing seat 546. The two film-feeding rollers 542 are positioned opposite each other on both sides of the packaging film and are in contact with the surface of the packaging film. The film-stretching drive motor 543 is mounted on the mounting plate 545, and its output end is connected to the driving cylindrical gear 544. The driving cylindrical gear 544 meshes with the driven cylindrical gear 541. When the film-stretching drive motor 543 rotates, it drives the two film-feeding rollers 542 to rotate in opposite directions through the driving cylindrical gear 544 and the driven cylindrical gear 541, causing the packaging film to move downward along the bag-making device 51 under the clamping action of the two film-feeding rollers 542.

[0051] like Figure 14 As shown, the transverse heat-sealing assembly 55 includes a positioning plate 551, a second cylinder 552, a second guide rod 553, a cylinder mounting plate 554, a transverse heat-sealing mounting plate 555, a second flange linear bearing 556, a transverse heat-sealing heating mold 557, a blade mounting plate 558, and a transverse heat-sealing blade 559. The second cylinder 552 is fixed by the cylinder mounting plate 554, and the transverse heat-sealing heating mold 557 is movably mounted on the second guide rod 553 via the second flange linear bearing 556. The two transverse heat-sealing heating molds 557 are positioned opposite each other on both sides of the cylindrical bag body and move closer or further apart under the drive of the second cylinder 552.

[0052] When the two transverse heat-sealing heating molds 557 approach each other, they clamp the cylindrical bag and perform transverse heat sealing on it. The transverse heat-sealing blade 559 is mounted on the blade mounting plate 558 and is configured to cooperate with the transverse heat-sealing heating mold 557 to cut the packaging film between adjacent bags after transverse heat sealing is completed.

[0053] like Figure 11As shown, the beating mechanism 56 includes a beater 561, a crank 562, a connecting rod 563, a rocker arm 564, a beater mounting plate 565, and a beating drive motor 566. The beating drive motor 566 is mounted on the beater mounting plate 565, and its output end is connected to the crank 562. The crank 562 is connected to the rocker arm 564 via the connecting rod 563, and the beater 561 is located at one end of the rocker arm 564. When the beating drive motor 566 rotates, it drives the crank 562 to rotate. The crank 562 drives the rocker arm 564 to swing back and forth via the connecting rod 563, causing the beater 561 to periodically beat the cylindrical bag.

[0054] A vibrator 58 is located on one side of the bag maker 51 and connected to it. When the scallion enters the bag maker 51, the vibrator 58 drives the bag maker 51 to vibrate, thereby reducing the frictional resistance between the scallion and the inner surface of the bag maker 51 and reducing the scallion's retention inside the bag maker 51. After the scallion enters the cylindrical bag, the beating mechanism 56 beats the bag through the beater 561, causing the scallion to continue moving towards the bottom of the bag, reserving space for the closure of the transverse heat-sealing assembly 55.

[0055] The feeding ramp 57 is located below the transverse heat sealing assembly 55. It is used to support the cylindrical bag containing scallions before transverse heat sealing and cutting, and to guide the packaged product out of the packaging mechanism 5 after the transverse heat sealing blade 559 has completed the cutting.

[0056] The touch screen 59 is mounted on the frame of the packaging mechanism 5 and electrically connected to the control system. It is used to input the target packaging weight, packaging film conveying length and equipment operating parameters, and to control the equipment to start, stop and reset.

[0057] like Figure 1 As shown, the electrical control box 6 is located at the bottom of the frame, and the control system is located inside the electrical control box 6. The electrical control box 6 is used to house the control system and related electrical components. The weight sensor 42 and the photoelectric sensor 25 are electrically connected to the signal input terminal of the control system, respectively. The conveyor drive motor 14, the sponge conveyor belt drive motor 27, the leaf-cutting blade motor 28, the root-cutting blade motor 29, the synchronous belt mechanism 41, the two-dimensional servo gimbal 43, the packaging mechanism 5, and the solenoid valve located on the air supply pipeline of the jet nozzle 23 are electrically connected to the control output terminal of the control system, respectively. The control system is used to receive the weight detection signal sent by the weight sensor 42 and the green onion detection signal sent by the photoelectric sensor 25, and to control the operation of each drive motor, synchronous belt mechanism 41, two-dimensional servo gimbal 43, solenoid valve, and packaging mechanism 5 according to the preset operating program, so as to realize the continuous operation of green onion leaf cutting, root removal, peeling, soil removal, cumulative weighing, feeding, and packaging processes.

[0058] The working principle of this embodiment is as follows: Step 1: Parameter Setting and Preparation. Connect the power supply to the equipment to start the control system in the electrical control box 6. Install the packaging film roll on the bag film roller 52, and pass the packaging film around the bag maker 51 and into the film stretching assembly 54. Set the target packaging weight and packaging film conveying length through the touch screen 59. After the vertical heat sealing heating mold 531 and the horizontal heat sealing heating mold 557 reach the working state, start the equipment.

[0059] Step 2: Conveying and Cutting. The scallions to be processed are placed horizontally on the segmented conveyor belt 11, with the root end and leaf end facing the root-cutting blade 26 and leaf-cutting blade 21, respectively. The conveyor drive motor 14 drives the segmented conveyor belt 11 to move, and the leaf-cutting blade motor 28 and the root-cutting blade motor 29 drive the leaf-cutting blade 21 and the root-cutting blade 26 to rotate, respectively. When the scallions pass through the cutting area, the root-cutting blade 26 and the leaf-cutting blade 21 cut off the root and leaf end of the scallions, respectively.

[0060] Step 3: Removing yellow leaves and the outer aged outer layer. After the scallion enters between the sponge conveyor belt 22 and the segmented conveyor belt 11, it is flexibly held by the sponge conveyor belt 22. Due to the speed difference between the sponge conveyor belt 22 and the segmented conveyor belt 11, the scallion rotates around its own axis while moving forward; after the photoelectric sensor 25 detects that the scallion has entered the air jet area, it sends a detection signal to the control system. The control system controls the solenoid valve on the air supply line of the air jet nozzle 23 to open, so that the air jet nozzle 23 sprays out high-pressure airflow to blow away the yellow leaves and the outer aged outer layer of the scallion; after the scallion leaves the air jet area, the control system controls the solenoid valve to close.

[0061] Step 4: Remove dirt. The peeled scallions are placed in the cleaning area enclosed by the waterproof cover 33. Multiple spray nozzles 31 spray cleaning water onto the surface of the scallions to remove dirt, broken leaves and skin residue. The water curtain 32 and the waterproof cover 33 limit the splashing of cleaning water.

[0062] Step 5: Weighing. The cleaned scallions fall from the discharge end of the conveyor mechanism 1 into the receiving tray 44. The weight sensor 42 detects the cumulative weight of the scallions in the receiving tray 44. When the cumulative weight has not reached the target packaging weight, the conveyor mechanism 1 continues to convey the scallions; when the cumulative weight reaches the target packaging weight, the control system stops conveying the scallions to the receiving tray 44.

[0063] Step 6: Feeding. The synchronous belt mechanism 41 drives the receiving tray 44 to move to the height corresponding to the feeding position of the packaging mechanism 5. The two-dimensional servo gimbal 43 first drives the receiving tray 44 to rotate in the horizontal plane, so that the receiving tray 44 faces the bag maker 51. Then, it drives the receiving tray 44 to flip to one side of the bag maker 51, so that the scallions enter the bag maker 51 under the action of gravity. After the feeding is completed, the two-dimensional servo gimbal 43 and the synchronous belt mechanism 41 are reset in sequence.

[0064] Step 7: Bag Making and Packaging. The packaging film is formed into a cylindrical bag by the bag maker 51. The vertical heat sealing assembly 53 heat seals the vertical overlap of the packaging film, and the horizontal heat sealing assembly 55 pre-heat seals the lower end of the cylindrical bag. As the scallions enter the cylindrical bag, the vibrator 58 and the tapping mechanism 56 drive the bag maker 51 to vibrate and tap the bag, causing the scallions to move towards the bottom of the bag. After filling, the film pulling assembly 54 conveys the packaging film downwards to a preset length, the horizontal heat sealing assembly 55 performs a horizontal heat seal on the upper end of the bag, and the horizontal heat sealing blade 559 cuts the heat-sealed packaging bag. The cut packaged product falls onto the feeding ramp 57 and is output by the packaging mechanism 5.

[0065] The above description is merely a specific embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings, or direct or indirect applications to other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A whole-process automatic processing and packaging equipment for green onions, characterized in that: The system includes a frame, a conveying mechanism (1) located on the top right side of the frame for conveying scallions from right to left, a leaf-cutting, root-removing, and peeling mechanism (2) located on the top of the frame and in the middle of the conveying mechanism (1) for removing the leaves, roots, and outer skin of the scallions, a soil-removing mechanism (3) located on the left side of the frame and to the left of the leaf-cutting, root-removing, and peeling mechanism (2) for removing the soil from the surface of the scallions, a weighing and feeding mechanism (4) located at the outlet of the corresponding conveying mechanism (1) on the frame for weighing the finished scallions and conveying them to the left, and a packaging mechanism (5) located at the discharge outlet of the corresponding weighing and feeding mechanism (4) on the frame for packaging the finished scallions. The weighing and feeding mechanism (4) includes a horizontal lifting frame that is movably mounted on the corresponding side of the frame in the up-down direction, a weight sensor (42) fixed on the lifting frame, a two-dimensional servo gimbal (43) fixed above the weight sensor (42), a receiving plate (44) fixed on the free end of the output shaft of the two-dimensional servo gimbal (43), and two sets of synchronous belt mechanisms (41) respectively located on the front and rear sides of the bottom of the weight sensor (42) and driving the lifting frame to slide up and down. The two-dimensional servo gimbal (43) is used to drive the receiving tray (44) to turn and flip into the inlet of the packaging mechanism (5).

2. The automatic processing and packaging equipment for green onions according to claim 1, characterized in that: Each set of synchronous belt mechanisms (41) includes a linear bearing (411) extending in the vertical direction and fixed on the frame, two synchronous pulleys (414) rotatably mounted on the upper and lower ends of the linear bearing (411), a synchronous belt (412) sleeved on the synchronous pulleys (414) on both sides, and a slider connector (413) fixed on the synchronous belt (412) and fixedly connected to the bottom of the lifting frame on the corresponding side.

3. The automatic processing and packaging equipment for green onions according to claim 1, characterized in that: The receiving tray (44) has a U-shaped groove structure on the top, and guide parts are provided on the front and rear sides of the top of the receiving tray (44).

4. The automatic processing and packaging equipment for green onions according to claim 1, characterized in that: The conveying mechanism (1) includes a pair of rotating shafts respectively rotatably mounted on the left and right sides of the top of the frame, four bushings (13) arranged in pairs and fixed on the same rotating shaft at intervals in the front-back direction, two sets of segmented conveyor belts (11) arranged at intervals in the front-back direction and extending in the left-right direction respectively and sleeved on the two bushings (13) on the corresponding sides, a conveying drive motor (14) fixed on the right side of the frame and whose output shaft is axially fixed to the right rotating shaft, and a pair of brush rollers (12) extending in the front-back direction and fixed in the frame respectively and located below the segmented conveyor belts (11).

5. The automatic processing and packaging equipment for green onions according to claim 4, characterized in that: The leaf cutting, root removal, and peeling mechanism (2) includes a mounting frame fixedly mounted on the middle section of the top of the frame, a sponge conveyor belt (22) mounted in the mounting frame and located above the conveyor belt and extending in the front-back direction, a sponge conveyor belt drive motor (27) fixed in the mounting frame and located above the segmented conveyor belt (11) and extending in the front-back direction, a leaf cutting blade (21) rotatably mounted in the mounting frame and located between the two conveyor belts, a leaf cutting blade motor (28) fixedly mounted at the front end of the mounting frame and whose output shaft is axially fixedly connected to the leaf cutting blade, a root cutting blade (26) rotatably mounted in the mounting frame and located behind the rear conveyor belt, a root cutting blade motor (29) fixedly mounted at the rear end of the mounting frame and whose output shaft is axially fixedly connected to the root cutting blade, a confluence plate (24) fixedly mounted in the mounting frame and located above the front side of the sponge conveyor belt drive motor (27), several air nozzles (23) spaced apart below the confluence plate (24), and a photoelectric sensor (25) fixedly mounted on the right side of the confluence plate (24) with its output end facing downward.

6. The automatic processing and packaging equipment for green onions according to claim 4, characterized in that: The soil removal mechanism (3) includes a waterproof cover (33) fixed on the top of the frame and covering the left end of the segmented conveyor belt (11), a number of spray nozzles (31) arranged at intervals inside the waterproof cover (33) with the spray end facing downwards, and a number of water curtains (32) arranged at intervals along the front and back directions and fixed on the left and right ends inside the waterproof cover (33).

7. The automatic processing and packaging equipment for green onions according to claim 1, characterized in that: The packaging mechanism (5) includes a bag maker (51) located above the left end of the frame and used to guide the unfolded packaging film to bend into a cylindrical bag body; a bag film roller (52) fixedly located at the lower end of the bag maker (51) and fixedly connected to the frame and used to install the packaging film roll; a vertical heat sealing assembly (53) located at the lower end of the bag film roller (52) and fixedly connected to the frame and used to heat seal the vertical overlap of the packaging film; a film pulling assembly (54) located below the bag film roller (52) and used to clamp the packaging film and drive the packaging film to move downward along the bag maker (51); a horizontal heat sealing assembly (55) located below the film pulling assembly (54) and fixedly located on the frame and used to perform horizontal heat sealing on the cylindrical bag body and cut the packaged bag body; a tapping mechanism (56) located below the horizontal heat sealing assembly (55) and fixedly connected to the frame; and a feeding ramp (57) located below the tapping mechanism (56) and fixedly connected to the frame.

8. The fully automated processing and packaging equipment for scallions according to claim 7, characterized in that: The slapping mechanism (56) includes a slapping plate mounting plate (565) fixed on the frame, a slapping drive motor (566) mounted below the slapping plate mounting plate (565), a crank (562) rotatably mounted above the rear end of the slapping plate mounting plate (565) and axially fixedly connected to the slapping drive motor (566), a rocker arm (564) rotatably mounted above the front end of the slapping plate mounting plate (565), a connecting rod (563) fixed on the free end of the crank (562) and rotatably connected to the middle section of the rocker arm (564), and a slapping plate (561) fixed on the rear side of the free end of the rocker arm (564).

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