Automatic packaging device for agricultural products

Abstract

The invention relates to an automatic packaging device for agricultural products, and belongs to the technical field of automatic packaging. The automatic packaging device comprises a transfer disc, and a bag taking station, an opening station, a filling station, a sealing station and a discharging station are arranged on the transfer disc. The bag clamping mechanisms are used for clamping packaging bags, and the bag clamping mechanisms are evenly arranged in the circumferential direction of the axis of the transfer disc at intervals; the bag taking mechanism is arranged at the bag taking station and used for feeding the packaging bags to the bag clamping mechanism; the bag opening mechanism is arranged at the opening station and used for opening the packaging bags on the bag clamping mechanism so as to facilitate filling; the filling mechanism is arranged at the filling station and used for quantitatively pouring the products into the opened packaging bags; the sealing mechanism is arranged at the sealing station and used for achieving sealed packaging of the packaging bag; and the discharging mechanism is arranged at the discharging station and used for discharging the packaging bags subjected to sealed packaging from the transfer disc. The green soy bean packaging device has the effect of automatically packaging green soy beans.

Description

Technical Field

[0001] The present application relates to the field of automatic packaging technology, and in particular to an automatic packaging device for edamame. Background Art

[0002] Agricultural product packaging is the use of certain containers or materials to protect and decorate agricultural products or processed agricultural products that are about to enter or have already entered the circulation field. Agricultural product packaging is an important condition for the circulation of agricultural products. Without packaging, agricultural products cannot be transported, stored, kept and sold, and delivered to consumers.

[0003] Currently, edamame packaging is typically done manually, requiring preliminary cleaning of the surface, placing the beans in boxes according to weight, and sealing the filled bags in a hot press before removal. Some semi-automated packaging equipment is also used in production, such as using simple robotic arms to grab bags or fixed-type filling devices to achieve quantitative filling. However, these methods often rely on manual intervention or only partially automate the process, making the overall process relatively cumbersome.

[0004] While these methods have met the needs of agricultural product packaging to a certain extent, they still present significant challenges. Manual packaging processes are labor-intensive and inefficient due to the numerous and repetitive steps involved. Furthermore, manual operations are susceptible to human factors, potentially leading to inconsistent packaging quality. Therefore, designing an automated solution that effectively reduces manual intervention and improves packaging efficiency has become a pressing technical challenge. Summary of the Invention

[0005] In order to realize automatic packaging of edamame, the present application provides an automatic packaging device for agricultural products.

[0006] The present application provides an automatic packaging device for agricultural products using the following technical solutions: An automatic packaging device for agricultural products comprises a transfer tray, on which a bag-taking station, an opening station, a filling station, a sealing station and a material-unloading station are provided; a bag-clamping mechanism for clamping packaging bags, the bag-clamping mechanisms being evenly spaced along the circumference of the axis of the transfer tray; a bag-taking mechanism arranged at the bag-taking station for loading packaging bags onto the bag-clamping mechanism; a bag-opening mechanism arranged at the opening station for opening the packaging bags on the bag-clamping mechanism for facilitating filling; a filling mechanism arranged at the filling station for pouring a quantitative amount of product into the opened packaging bags; a sealing mechanism arranged at the sealing station for achieving sealed packaging of the packaging bags; and a material-unloading mechanism arranged at the material-unloading station for unloading sealed and packaged packaging bags from the transfer tray.

[0007] By adopting the above technical solution, a highly automated agricultural product packaging device has been realized. By coordinating multiple workstations on the transfer tray with corresponding mechanisms, the device can sequentially complete operations such as loading, opening, filling, sealing, and unloading packaging bags. This effectively reduces manual intervention and labor intensity, improves packaging efficiency and precision, and ensures the quality and safety of agricultural products during the packaging process.

[0008] Optionally, the bag clamping mechanism includes a separation component and a feeding component; The separation assembly includes a bag storage box for placing packaging bags, a suction assembly that is lifted and arranged on the bag storage box and is used to clamp a single packaging bag, and a first lifting drive member that drives the suction assembly to lift and lower. The bottom of the bag storage box is provided with a through hole that penetrates both end surfaces and allows the packaging bag to be separated. The loading component includes a transfer bracket, a transfer part rotatably mounted on the transfer bracket, and a clamping robot arranged on the transfer part. The rotation of the transfer part enables the clamping robot to have a first clamping position and a second clamping position. When the clamping robot is located at the first clamping position, the clamping robot corresponds to the suction component and clamps the packaging bag of the suction component. When the clamping robot is located at the second clamping position, the clamping robot corresponds to the clamping mechanism of the bag-taking station.

[0009] By adopting the above technical solution, the bag storage box combined with the suction component and the first lifting drive component can accurately clamp a single packaging bag and take it out from the bag storage box, effectively avoiding the problem of multiple bags sticking together and improving the efficiency and reliability of bag retrieval; the loading component uses the rotation design of the transfer part to enable the clamping robot to switch between the first clamping position and the second clamping position, thereby achieving a smooth transition of the packaging bag from the suction component to the bag retrieval station, reducing manual intervention and improving the degree of automation; the overall solution simplifies the loading process of the packaging bag, reduces the complexity of the operation, provides stable support for the subsequent packaging process, and significantly improves the overall efficiency and quality of agricultural product packaging.

[0010] Optionally, the bag clamping mechanism includes two groups of rotating rods rotatably mounted on the transfer plate, a clamping member arranged at the end of the rotating rod and used to clamp the side wall of the packaging bag, a first elastic member connecting the two groups of transfer rods, and a first rotating member driving the transfer rod to rotate; the clamping member includes a clamping rod slidably mounted on the rotating rod, a second elastic member sleeved on the clamping rod, and a clamping plate rotating on the end of the rotating rod and pushed by the clamping rod.

[0011] By adopting the above technical solution, the bag clamping mechanism realizes automatic clamping and release of the side wall of the packaging bag through the cooperation of the rotating rod, the clamping member, the first elastic member and the first rotating member. The first rotating member drives the rotation of the transfer rod, so that the two groups of rotating rods move toward or away from each other, thereby tightening and shrinking the packaging bag, pushing the clamping rod to rotate the clamping plate, and the bag clamping mechanism places the packaging bag on the inner side of the clamping plate. The clamping plate is reset under the action of the second elastic member to achieve clamping of the packaging bag.

[0012] Optionally, the transfer plate is provided with a clamping member in the bag-taking mechanism for driving the clamping rod to slide, the clamping rod is provided with a pushing column for the clamping member to push, and the output shaft of the clamping member is also provided with an abutment frame for the packaging bag to abut during transfer.

[0013] By adopting the above technical solution, the coordination between the clamping member and the push column enables the clamping member to precisely act on the clamping rod, ensuring the reliability and stability of the action. The setting of the abutment frame provides additional support and guidance for the packaging bag, ensuring the stability of the packaging bag placed on the clamping plate.

[0014] Optionally, the bag-opening mechanism includes an opening assembly and a guide assembly, wherein the opening assembly includes an opening bracket, two sets of opening rods provided on the opening bracket, an opening driving member for driving the opening rods toward or away from each other, and a second suction cup member provided at the end of the opening rod; The guide assembly includes a guide bracket, a compacting and rotating cylinder arranged on the top axis of the transfer plate, and a guide rod arranged on the guide bracket. The compacting and rotating cylinder drives the guide rod to rotate back and forth between the opening station and the sealing station.

[0015] By adopting this technical solution, the automatic opening and guiding functions of the packaging bag are achieved. Specifically, the opening rods in the opening assembly can be moved closer or further apart by the opening drive, and in conjunction with the second suction cup, ensure that the packaging bag is stably opened to facilitate subsequent filling operations, thereby improving filling efficiency and accuracy. The compression rotary cylinder in the guiding assembly drives the guide rods to rotate back and forth between the opening and sealing stations, ensuring that the top of the packaging bag remains open, thereby enhancing the automation and reliability of the entire packaging process.

[0016] Optionally, the filling mechanism includes a conveyor belt for conveying products, a filling base arranged on the top of the transfer plate, a quantitative unloading component arranged on the top of the filling base, and a filling component that is lifted and arranged at the bottom of the filling base and corresponds to the output end of the quantitative unloading component.

[0017] By adopting the above technical solution, the conveyor belt is used to transport products, which improves the flow efficiency of products and reduces manual intervention; the filling base serves as a supporting structure to ensure the stability of the filling process; the quantitative feeding component can accurately control the filling amount of the product, ensure the weight consistency of each bag of agricultural products, and improve the packaging quality; the filling component cooperates with the quantitative feeding component through the lifting action to achieve precise filling, avoid over- or under-filling, and improve the degree of automation and work efficiency.

[0018] Optionally, the quantitative unloading assembly includes a quantitative fixing seat, a guide cone disk arranged on the top of the quantitative fixing seat, a material distribution vibration plate circumferentially arranged on the outside of the guide cone disk, a material distribution hopper arranged on the side of the material distribution slide away from the guide cone top, and a collecting hopper for collecting products from the hopper, and the quantitative fixing seat is provided with a first vibration driving member that drives the guide cone disk to vibrate and a second vibration driving member that drives the material distribution vibration plate to vibrate; The filler assembly includes a filler support, a filler lifting frame installed on the filler support, and a filler hopper provided on the filler lifting frame. The filler lifting frame is provided with a third vibration driving member for driving the filler hopper to vibrate.

[0019] By implementing this technical solution, precise quantitative unloading and stable filling operations are achieved during the agricultural product packaging process. Specifically, the quantitative unloading assembly, through the coordinated vibration of the guide cone and the distribution vibrating plate, efficiently and evenly distributes the product into the unloading hopper and ultimately collects it in the collection hopper, ensuring a consistent weight within each bag and improving packaging accuracy. The filling hopper in the filling assembly is driven by the filling lifting frame to achieve a lifting motion, and a third vibrating drive element causes the filling hopper to vibrate, effectively preventing product accumulation or jamming during the filling process, ensuring a smooth and accurate filling process.

[0020] Optionally, the sealing mechanism includes a vacuum assembly, a heat sealing assembly, and a detection assembly arranged between the vacuum assembly and the filling assembly; the vacuum assembly includes a vacuum bracket and a vacuum tube arranged to be lifted and lowered on the vacuum bracket, the heat sealing assembly includes a heat sealing seat and a heat sealing drive member arranged on the heat sealing seat, the detection assembly includes a detection bracket, a detection rod rotatably arranged on the detection bracket and for a packaging bag containing a product to abut, and a detection sensor; when the detection sensor does not detect the rotation of the detection rod, the vacuum assembly stops the vacuuming action, and the heat sealing assembly stops the sealing work.

[0021] By adopting this technical solution, intelligent detection of the product filling status within the packaging bag is achieved. Specifically, the detection component can effectively determine whether the packaging bag is filled with product. If the detection sensor does not detect the rotation of the detection rod, indicating that the packaging bag is empty or the product filling is abnormal, the vacuum component stops vacuuming, avoiding unnecessary vacuum treatment of the unfilled packaging bag. At the same time, the heat sealing component also stops sealing, preventing waste of heat sealing resources and preventing unqualified products from flowing into subsequent processes.

[0022] Optionally, the unloading mechanism includes an unloading conveyor belt, an unloading pusher for pushing the clamping rod, and an unloading guide plate, and the unloading guide plate is arranged at the input end of the unloading conveyor belt.

[0023] By adopting the above technical solution, the unloading conveyor belt is used to transport the packaged packaging bags, which improves transportation efficiency and reduces manual intervention; the unloading pusher can push the clamping rod, so that the packaging bag can be smoothly separated from the bag clamping mechanism and transferred to the unloading conveyor belt, ensuring the accuracy and reliability of the unloading action; the unloading guide plate is arranged at the input end of the unloading conveyor belt, which can guide the packaging bag to enter the conveyor belt accurately, avoiding position offset or jamming problems, and improving the operating stability of the overall equipment.

[0024] Optionally, a recovery component for clamping packaging bags with unqualified filling amounts is also provided between the unloading mechanism and the hot pressing component. The recovery component includes a movable push rod for pushing one of the pushing columns, a side clamping component for clamping and rotating the packaging bags, and a recovery frame for collecting products and packaging bags; the clamping plate is provided with a clamping rotating sleeve that rotates with the transfer rod.

[0025] By adopting this technical solution, the introduction of a recycling assembly effectively solves the problem of handling bags with substandard filler content. The combination of a movable push rod and side gripper assembly accurately grasps and removes substandard bags, further enhancing operational flexibility. The recycling bin provides a centralized collection area for materials and bags, improving the overall automation and efficiency of the packaging system.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. This application uses multiple workstations on the transfer tray and corresponding mechanisms to sequentially complete operations such as loading, opening, filling, sealing, and unloading of packaging bags, effectively reducing manual intervention and lowering labor intensity; 2. This application can recycle packaging bags with incomplete fillings through the setting of the recycling component. The material enters the second recycling tank and the packaging bag enters the first recycling tank, thereby ensuring the product qualification rate in the unloading mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 It is a structural schematic diagram of the bag clamping mechanism of an embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the bottom structure of the bag clamping mechanism of an embodiment of the present application.

[0030] Figure 4 It is a structural schematic diagram of the bag taking mechanism of an embodiment of the present application.

[0031] Figure 5 It is a structural schematic diagram of the loading assembly of an embodiment of the present application.

[0032] Figure 6 This is a schematic diagram of the structure of the bag-supporting mechanism of the embodiment of the present application. Figure 7 is a structural diagram of the packing mechanism of an embodiment of the present application, Figure 8 This is a schematic structural diagram of the sealing mechanism of an embodiment of the present application.

[0033] Figure 9 It is a structural schematic diagram of the unloading mechanism and recycling assembly of an embodiment of the present application.

[0034] Figure 10 It is a structural diagram of the recycling component of the embodiment of the present application.

[0035] Figure 11 It is a cross-sectional schematic diagram of the transfer rod of an embodiment of the present application.

[0036] Explanation of reference numerals: 1. transfer plate; 11. fixed column; 12. movable track; 13. movable driving member; 2. bag clamping mechanism; 21. transfer rod; 211. rotating sleeve; 212. limiting edge; 22. clamping member; 221. clamping rod; 2211. axial slide groove; 2212. driving slide groove; 222. second elastic member; 223. clamping plate; 224. pushing column; 23. first elastic member; 24. clamping member; 241. clamping plate; 242. abutting frame; 25. clamping rotating sleeve; 251. limiting arc groove; 252. third elastic member; 253. driving member 3. Bag-taking mechanism; 31. Separation assembly; 311. Bag storage box; 3111. Disengagement through-hole; 312. Suction assembly; 3121. Suction lifting seat; 3122. Lifting guide rod; 3123. First suction member; 313. Separation and lifting drive member; 32. Loading assembly; 321. Transfer bracket; 322. Transfer member; 3221. Loading drive member; 3222. First rotating arm; 3223. Second rotating arm; 3224. Connecting rod; 323. Clamping manipulator; 4. Bag-supporting mechanism; 41. Opening assembly; 411. Opening bracket; 41 2. Spreading rod; 413. Spreading drive member; 414. Second suction cup member; 42. Guide assembly; 421. Guide bracket; 422. Guide drive member; 423. Guide rod; 4231. Guide plate; 5. Filling mechanism; 51. Conveyor belt; 52. Filling base; 53. Quantitative feeding assembly; 54. Filling assembly; 541. Filling bracket; 542. Filling lifting frame; 543. Filling hopper; 6. Sealing mechanism; 61. Vacuuming assembly; 611. Vacuuming bracket; 612. Vacuuming tube; 6121. Flat portion; 62. Heat sealing assembly; 621 , heat sealing seat; 622, heat sealing drive member; 63, detection assembly; 631, detection bracket; 632, detection rod; 6321, detection arc surface; 633, detection sensor; 634, arc limit rod; 7, unloading mechanism; 71, unloading conveyor belt; 72, unloading pusher; 73, unloading guide plate; 8, recovery assembly; 81, movable push rod; 82, side clamping assembly; 821, side clamping hand; 822, side rotating member; 823, side movable frame; 83, recovery frame; 831, first recovery trough; 832, second recovery trough; 833, guide slope. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-11 This application is described in further detail.

[0038] The embodiment of the present application discloses an automatic packaging device for agricultural products.

[0039] Reference Figure 1 The automatic packaging device for agricultural products includes a transfer plate 1, a bag clamping mechanism 2, a bag taking mechanism 3, a bag supporting mechanism 4, a filling mechanism 5, a sealing mechanism 6 and a feeding mechanism 7.

[0040] The transfer tray 1 is a horizontally arranged circular disc, rotated by a servo motor. Along its outer circumference, stations for bag removal, opening, filling, sealing, and unloading are arranged. Bag clamping mechanisms 2 are spaced circumferentially around the outer edge of the transfer tray 1 to securely hold the packaging bags. In this embodiment, eight sets of these mechanisms are evenly spaced, allowing the transfer tray 1 to rotate 45 degrees at a time.

[0041] Reference Figure 1 、 Figure 2 and Figure 3 The bag clamping mechanism 2 includes two groups of transfer rods 21, a clamping member 22 rotatably mounted on the end of the transfer rod 21, a first elastic member 23 connecting the two groups of transfer rods 21, and a clamping member 24 driving the clamping member 22 to clamp. The two groups of transfer rods 21 are arranged along the radial direction of the transfer disc 1. A rotating sleeve 211 is provided at one end of the transfer rod 21. The bottom of the transfer disc 1 is provided with a fixed column 11 fixedly mounted with the rotating sleeve 211 and a first rotating member driving the rotating sleeve 211 to rotate. In this embodiment, the first rotating member is a pushing cylinder, and a pushing piece for the output shaft of the first rotating member is provided on the side wall of the rotating sleeve 211. The first elastic member 23 is a tension spring member, and its two ends are respectively fixed to the two groups of transfer rods 21. The first rotating member pushes the pushing piece, so that the two groups of transfer rods 21 rotate toward or away from each other, so that the packaging bag can be squeezed inward to form a space for the product to fall and store.

[0042] The clamping member 22 comprises a clamping rod 221 slidably mounted within the transfer rod 21, a second elastic member 222 sleeved on the clamping rod 221, and a clamping plate 223 hinged to the end of the transfer rod 21. The transfer rod 21 has a through hole at the end away from the rotating sleeve 211 for the clamping rod 221 to pass through. This through hole corresponds to the clamping plate 223, so that when the transfer rod 21 passes through the through hole, it can abut against the clamping plate 223 and drive the clamping plate 223 to rotate. To improve clamping stability, the clamping plate 223 is also fixedly mounted with a friction pad on the side facing the transfer rod 21.

[0043] Reference Figure 4 and Figure 5, the clamping member 24 is arranged at the bag taking station, the clamping member 24 is driven by a rotating motor, and a clamping plate 241 is fixedly installed on the top of the clamping member 24. A strip hole is provided at the bottom of the transfer rod 21, and a pushing column 224 arranged in the strip hole is provided on the side wall of the clamping rod 221. The pushing column 224 and the clamping rod 221 are fixed. The first clamping plate 241 can push the two groups of pushing columns 224 at the same time, so that the two groups of clamping plates 223 can be rotated and opened at the same time. Among them, in order to facilitate the stable loading of the packaging bag, an abutment frame 242 is also fixed on the clamping plate 241. The abutment frame 242 is L-shaped. When the packaging bag is loaded into the clamping mechanism, it can be positioned under the action of the abutment frame 242.

[0044] The bag taking mechanism 3 is provided at the bag taking station and is used for loading the packaging bag onto the bag clamping mechanism 2 on the transfer tray 1. The bag taking mechanism 3 includes a separation component 31 and a loading component 32.

[0045] The separation assembly 31 includes a bag storage box 311 for placing packaging bags, a suction assembly 312 that is elevated at the bottom of the bag storage box 311, and a separation and lifting drive 313 that drives the suction assembly 312 upward and downward. The bottom of the bag storage box 311 is provided with a detachment hole 3111 that penetrates both end surfaces and allows the packaging bags to be detached. The suction assembly 312 includes a suction lift seat 3121, a lifting guide rod 3122 that slidably engages with the suction lift seat 3121, and a first suction member 3123 disposed on top of the suction lift seat 3121. In this embodiment, the first suction member 3123 is a vacuum suction cup. The separation and lifting drive 313 is a push cylinder disposed at the bottom of the suction lift seat 3121, with its output shaft fixedly connected to the bottom of the suction lift seat 3121.

[0046] The loading assembly 32 includes a transfer bracket 321, a transfer member 322, and a clamping manipulator 323. The transfer member 322 includes a loading drive member 3221 fixed to the transfer bracket 321, a first rotating arm 3222 connected to the output shaft of the loading drive member 3221, and a second rotating arm 3223 hinged to the first rotating arm 3222. A connecting rod 3224 is also provided between the transfer bracket 321 and the second rotating arm 3223, and the two ends of the connecting rod 3224 are respectively hinged to the transfer bracket 321 and the second rotating arm 3223. The clamping manipulator 323 includes a clamping drive member fixed to the second rotating arm 3223, a first clamping plate, and a second clamping plate rotatably mounted on the second rotating arm 3223. The clamping drive member is a pushing cylinder, one end of the first clamping plate is hinged to the clamping drive member, and the middle part of the first clamping plate is rotatably connected to the second rotating arm 3223. A gear transmission structure connecting the first clamping plate and the second clamping plate is provided in the second rotating arm 3223, so that when the first clamping plate rotates, the second clamping plate can be driven to rotate synchronously.

[0047] The bag-opening mechanism 4 is arranged at the opening station, and is used to open the packaging bag on the bag-clamping mechanism 2 so as to form a material storage space in the packaging bag to facilitate the filling of the product.

[0048] Reference Figure 6 The bag-opening mechanism 4 includes an opening assembly 41 and a guide assembly 42. The opening assembly 41 includes an opening bracket 411, two sets of opening rods 412 arranged on the opening bracket 411, an opening drive 413 that drives the two sets of opening rods 412 to rotate, and a second suction cup 414. One end of the two sets of opening rods 412 is rotatably mounted on the opening bracket 411. The two sets of opening rods 412 are connected by gear transmission. The opening drive 413 is a rotary motor fixed to the opening bracket 411. Its output shaft is fixed to the rotation axis of one set of opening rods 412, so that the two sets of opening rods 412 can rotate in directions close to or away from each other. The second suction cup 414 is fixed to the end of the opening rod 412 away from the opening drive 413. It is a rubber suction cup head and corresponds to the top of the packaging bag.

[0049] A gap exists between the two sets of opening rods 412 to allow the bag clamping mechanism 2 to rotate. When the bag clamping mechanism 2 rotates to the opening position, the opening drive member 413 drives the two sets of opening rods 412 toward each other, causing the second suction cup members 414 to adhere to opposite sides of the packaging bag. The two sets of opening rods 412 then move away from each other, opening the top of the bag. As the bag opens, the first rotating member is simultaneously activated, rotating the two sets of transfer rods 21 toward each other, opening the top of the bag.

[0050] The guide assembly 42 includes a guide bracket 421, a guide drive 422 arranged on the top of the transfer disc 1, and a guide rod 423 arranged on the guide bracket 421. The guide drive 422 is a rotary cylinder, which is coaxially arranged with the transfer disc 1, and the transfer disc 1 has a through hole for the guide drive 422 to be arranged. The guide rod 423 is fixed to the side of the guide bracket 421 away from the guide drive 422, and the guide rod 423 is Z-shaped as a whole. The end of the guide rod 423 has a guide piece 4231 inserted into the packaging bag and a cylinder part that drives the two groups of guide pieces 4231 to move away from or towards each other, and the inner side of the two groups of guide pieces 4231 has an inwardly contracted guide surface. Among them, the expansion rod 412 is tilted near the side of the second suction cup part 414 to avoid interference and abutment between the guide bracket 421 and the expansion rod 412. After the opening assembly 41 opens the packaging bag, the guide piece 4231 is inserted into the packaging bag to maintain the packaging bag in an open state, and moves synchronously to the filling station as the transfer plate 1 rotates.

[0051] Reference Figure 7The filling mechanism 5 includes a conveyor belt 51 for conveying products, a filling base 52 arranged above the transfer plate 1, a quantitative unloading component 53 arranged on the top of the filling base 52, and a filling component 54 arranged at the bottom of the filling base 52 for lifting.

[0052] The structure of the conveyor belt is consistent with that of existing material conveyor belts, and is used to convey the screened and cleaned products obliquely upward to the quantitative unloading assembly 53. The overall structure of the quantitative unloading assembly 53 is consistent with that of existing multi-head combination weighers, and is used to unload the products quantitatively to the filling assembly 54, which then fills the products into the packaging bags at the filling station.

[0053] The filling assembly 54 includes a filling bracket 541, a filling lifting frame 542 that is lifted and mounted on the filling bracket 541, and a filling hopper 543 disposed on the filling lifting frame 542. The filling hopper 543 corresponds to the bottom output end of the quantitative feeding assembly 53. The bottom of the filling hopper 543 is provided with a rotating baffle, which can be driven by pneumatic or electric means to achieve intermittent feeding.

[0054] Reference Figure 7 and Figure 8 The sealing mechanism 6 is arranged at the sealing station, and is used to evacuate the inside of the packaging bag and perform heat-pressure sealing. It includes a vacuum assembly 61, a heat-sealing assembly 62 and a detection assembly 63. The vacuum assembly 61 includes a vacuum support 611 and a vacuum tube 612 installed on the vacuum support 611 for lifting. The end of the vacuum tube 612 has a flat portion 6121 inserted into the packaging bag. The vacuuming action and the first rotating member are started at the same time. The two groups of transfer rods 21 move away from each other, so that after the vacuum tube 612 is pulled out of the packaging bag, the top opening gap of the packaging bag is reduced, reducing the amount of air entering the packaging bag. The heat-sealing assembly 62 includes a heat-sealing seat 621 and a heat-sealing drive 622 installed on the heat-sealing seat 621. The heat-sealing drive 622 has two groups of heat-sealing plates arranged opposite to each other, and the heat-sealing plates correspond to the top of the packaging bag.

[0055] The detection assembly 63 is located between the vacuum assembly 61 and the filling assembly 54 and is used to detect the filling content within the packaging bag. The detection assembly 63 comprises a detection bracket 631, a detection rod 632 rotatably mounted on the detection bracket 631, and a detection sensor 633. One end of the detection rod 632 is connected to the detection bracket 631 via a tension spring. The other end is provided with a detection arc 6321 for the packaging bag to abut against. A curved stopper 634 is provided on the other side of the detection rod 632. The gap between the detection arc 6321 and the curved stopper 634 coincides with the area where the packaging bag rotates. The tension spring is connected to the detection sensor 633, which is used to detect the force applied to the detection rod 632. When the force is greater than a preset value, the weight of the material within the packaging bag is determined to be acceptable. When the force is less than the preset value, the weight of the material within the packaging bag is determined to be unacceptable, and subsequent vacuuming and heat-sealing operations are terminated.

[0056] Reference Figure 9 The unloading mechanism 7 is located at the unloading station and is used to unload the filled packaging bags. It includes a unloading conveyor belt 71, a unloading pusher 72 for pushing the pusher posts 224, and an unloading guide plate 73. The unloading pusher 72 has the same structure as the clamping member 24. The output shaft of the unloading pusher 72 is equipped with an unloading pusher plate 721 for simultaneously pushing the two sets of pusher posts 224. The unloading guide plate 73 is located at the input end of the unloading conveyor belt 71 and tilts the unclamped packaging bags onto the unloading conveyor belt 71.

[0057] Reference Figure 9 、 Figure 10 and Figure 11 In other embodiments, in order to screen out unqualified packaging bags, the device is further provided with a recycling component 8 between the unloading mechanism 7 and the hot pressing component. The recycling component 8 includes a movable push rod 81, a side clamping component 82 and a recycling frame 83. The transfer tray 1 is further provided with a recycling station between the unloading station and the sealing station. The movable push rod 81 is used to push the push column 224 on the side of the recycling station near the unloading station. A movable drive member 13 is located below the transfer tray 1 to drive the unloading push plate 721. The activation of the movable drive member 13 is controlled by a detection sensor 633. When unqualified filler is detected, the movable drive member 13 drives the movable push rod 81 toward the push column 224, releasing the clamp 22 at one end of the bag at the recycling station, causing the bag to tilt to one side under the action of gravity.

[0058] The side clamping assembly 82 is mounted on the side of the unclamped transfer rod 21. It includes a side clamping arm 821 for clamping the side of the packaging bag, a side rotating member 822 that drives the side clamping arm 821 to rotate, and a side movable frame 823 for mounting the side rotating member 822. The side movable frame 823 slides horizontally via linear slide rails. A hydraulic cylinder-driven lifting member is mounted on the side movable frame 823 to drive the side rotating member 822 up and down.

[0059] The side clamping hand 821 specifically does not clamp the thumb cylinder, and the side rotating part 822 is a rotating cylinder used to drive the side clamping hand 821 to rotate upward along the axis of the transfer rod 21.

[0060] The recycling frame 83 is arranged between the side movable frame 823 and the transfer tray 1. The top surface of the recycling frame 83 has a first recycling trough 831 for recycling dropped packaging bags and a second recycling trough 832 for dropping products. The first recycling trough 831 is located on the side of the side movable frame 823. The top of the second recycling trough 832 is provided with a recycling slope 8321 to facilitate the stacking of packaging bags.

[0061] Reference Figure 11 The end of the transfer rod 21 is also rotatably mounted with a clamping rotary sleeve 25. The clamping rotary sleeve 25 is sleeved on the outside of the transfer rod 21, and the clamping plate 223 is hingedly mounted on the clamping rotary sleeve 25. A limiting rib 212 is provided on the outside of the transfer rod 21, and a limiting arc groove 251 is provided on the inner wall of the clamping rotary sleeve 25 for the sliding arrangement of the limiting rib 212. The arc of the limiting arc groove 251 is 180 degrees. The clamping rotary sleeve 25 is also provided with a third elastic member 252 connected to the limiting rib 212 on the inner wall of the limiting arc groove 251. The third elastic member 252 is an arc spring. In order to enable the side clamping hand 821 to drive the clamping rotary sleeve 25 to rotate synchronously, the side clamping hand 821 is also mounted with a collar 824 that plugs into the clamping rotary sleeve 25. The clamping rotary sleeve 25 has an L-shaped sleeve rod that cooperates with the collar.

[0062] The inner wall of the clamping rotary sleeve 25 is also equipped with a driving protrusion 253 that drives the clamping rod 221 to slide. The sidewall of the clamping rod 221 is provided with a mounting groove for the driving protrusion 253. The mounting groove includes an axial groove 2211 arranged along the axis of the clamping rod 221 and a driving groove 2212 arranged helically along the axis of the clamping rod. When the clamping member 24 or the material discharging pusher 72 pushes the clamping rod 221, the driving protrusion 253 slides within the axial groove 2211. When the clamping rotary sleeve 25 rotates, the driving protrusion 253 helically slides within the driving groove 2212, causing the clamping rod 221 to slide horizontally, thereby releasing the transfer rod 21 from gripping the packaging bag. Simultaneously, as the packaging bag rotates, the material automatically falls into the second recovery trough 832.

[0063] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An automatic packaging device for agricultural products, characterized in that: It comprises a transfer tray (1), on which a bag taking station, an opening station, a filling station, a sealing station and a material unloading station are provided; A bag clamping mechanism (2) is used for clamping the packaging bag, and the bag clamping mechanism (2) is evenly spaced along the axis of the transfer plate (1); A bag taking mechanism (3) is provided at the bag taking station and is used for loading the packaging bag onto the bag clamping mechanism (2); A bag-opening mechanism (4) is provided at the opening station and is used to open the packaging bag on the bag-clamping mechanism (2) to facilitate filling; A filling mechanism (5), provided at the filling station, for pouring a quantitative amount of the product into the expanded packaging bag; A sealing mechanism (6), provided at the sealing station, for achieving sealed packaging of the packaging bag; The unloading mechanism (7) is arranged at the unloading station and is used to unload the sealed packaging bags from the transfer tray (1).

2. The automatic packaging device for agricultural products according to claim 1, characterized in that: The bag taking mechanism (3) comprises a separation component (31) and a feeding component (32); The separation component (31) includes a bag storage box (311) for placing packaging bags, a suction component (312) that is lifted and arranged at the bottom of the bag storage box (311) and is used to clamp a single packaging bag, and a first lifting drive member that drives the suction component (312) to lift and lower. The bottom of the bag storage box (311) is provided with a detachment through hole (3111) that penetrates both end surfaces and allows the packaging bag to detach. The loading assembly (32) includes a transfer bracket (321), a transfer member (322) rotatably mounted on the transfer bracket (321), and a clamping manipulator (323) arranged on the transfer member (322). The rotation of the transfer member (322) enables the clamping manipulator (323) to have a first clamping position and a second clamping position. When the clamping manipulator (323) is located at the first clamping position, the clamping manipulator (323) clamps the packaging bag of the suction assembly (312). When the clamping manipulator (323) is located at the second clamping position, the clamping manipulator (323) corresponds to the bag clamping mechanism (2) of the bag-taking station.

3. The automatic packaging device for agricultural products according to claim 2, characterized in that: The bag clamping mechanism (2) comprises two groups of transfer rods (21) rotatably mounted on the transfer plate (1), a clamping member (22) provided at the end of the transfer rods (21) and used to clamp the side wall of the packaging bag, and a first elastic member (23) connecting the two groups of transfer rods (21); The clamping member (22) comprises a clamping rod (221) slidably mounted on the transfer rod (21), a second elastic member (222) sleeved on the clamping rod (221), and a clamping plate (223) rotating on the end of the transfer rod (21) and pushed by the clamping rod (221).

4. The automatic packaging device for agricultural products according to claim 3, characterized in that: The transfer tray (1) is provided with a clamping member (24) on the bag taking mechanism (3) for driving the clamping rod (221) to slide, the clamping rod (221) is provided with a pushing column (224) for the clamping member (24) to push, and the output shaft of the clamping member (24) is also provided with an abutment frame (242) for the packaging bag to abut during transfer.

5. The automatic packaging device for agricultural products according to claim 1, characterized in that: The bag-stretching mechanism (4) comprises an opening assembly (41) and a guide assembly (42); the opening assembly (41) comprises an opening bracket (411), two groups of opening rods (412) arranged on the opening bracket (411), an opening driving member (413) for driving the opening rods (412) toward or away from each other, and a second suction cup member (414) arranged at the end of the opening rod (412); The guide assembly (42) comprises a guide bracket (421), a guide driving member (422) arranged on the top of the transfer plate (1), and a guide rod (423) arranged on the guide bracket (421). The guide driving member (422) drives the guide rod (423) to vertically rise and fall and to rotate back and forth between the opening position and the sealing position.

6. The automatic packaging device for agricultural products according to claim 1, characterized in that: The filling mechanism (5) comprises a conveyor belt (51) for conveying products, a filling base (52) arranged above the transfer plate (1), a quantitative discharge assembly (53) arranged on the top of the filling base (52), and a filling assembly (54) arranged at the bottom of the filling base (52) and corresponding to the output end of the quantitative discharge assembly (53).

7. The automatic packaging device for agricultural products according to claim 6, characterized in that: The filler assembly (54) comprises a filler support (541), a filler lifting frame (542) mounted on the filler support (541) for lifting, and a filler hopper (543) provided on the filler lifting frame (542).

8. The automatic packaging device for agricultural products according to claim 1, characterized in that: The sealing mechanism (6) comprises a vacuum pumping assembly (61), a heat sealing assembly (62), and a detection assembly (63) arranged between the vacuum pumping assembly (61) and the filler assembly (54); the vacuum pumping assembly (61) comprises a vacuum pumping support (611) and a vacuum pumping tube (612) arranged to be lifted and lowered on the vacuum pumping support (611); the heat sealing assembly (62) comprises a heat sealing seat (621) and a heat sealing driving member (622) arranged on the heat sealing seat (621); the detection assembly (63) comprises a detection support (631), a detection rod (632) rotatably arranged on the detection support (631) and for a packaging bag containing a product to abut against, and a detection sensor (633).

9. The automatic packaging device for agricultural products according to claim 3, characterized in that: The unloading mechanism (7) comprises an unloading conveyor belt (71), an unloading pusher (72) for pushing the clamping rod (221), and an unloading guide plate (73), wherein the unloading guide plate (73) is arranged at the input end of the unloading conveyor belt (71).

10. The automatic packaging device for agricultural products according to claim 4, characterized in that: A recovery assembly (8) for clamping packaging bags with unqualified filling amounts is also provided between the unloading mechanism (7) and the hot pressing assembly. The recovery assembly (8) includes a movable push rod (81) for pushing one of the push columns (224), a side clamping assembly (82) for clamping and rotating the packaging bag, and a recovery frame (83) for collecting products and packaging bags. The clamping plate (223) is provided with a clamping rotating sleeve (25) that rotates with the transfer rod (21).

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