Packaging equipment

Abstract

According to the packaging equipment, packaging bags are conveyed to a main conveying device one by one through an automatic bag conveying device, and the packaging bags sequentially pass through a bag opening and bagging station and a bag arranging and sealing station along with conveying of the main conveying device; when the packaging bag reaches the bag opening and bagging station, the automatic bag opening device opens the packaging bag firstly, and then the automatic bagging device pushes products conveyed by the product conveying line into the opened packaging bag; when the packaging bags arrive at the bag arranging and sealing station, the automatic bag arranging and sealing device firstly arranges openings of the packaging bags in order and then seals the openings, and then automatic packaging can be completed; the device has the advantages of being simple and compact in structure, small in occupied area, high in working efficiency and low in failure rate.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, and in particular to a packaging equipment. Background Art

[0002] Our company has developed an automatic packaging machine with an automatic bag-opening and bag-folding mechanism. For specific technical details, please refer to the Chinese invention patent application publication document, publication number CN118047104A. It has the following disadvantages: (1) The whole equipment is relatively large and occupies a large area; (2) The accordion bag opening and bag feeding structure is too complicated and large in size. Therefore, our company organized R&D personnel to research and develop automatic packaging equipment with a simpler, more compact structure and a smaller footprint. Summary of the invention

[0003] In view of the shortcomings of the packaging equipment in the prior art mentioned above, such as large footprint and overly complex structure, the technical solution adopted by the present invention to solve the technical problems is: a packaging equipment, comprising: a main conveying device, along the conveying direction of the main conveying device are arranged in sequence: a bag feeding station, a bag opening and bag filling station and a bag sorting and sealing station, the bag feeding station is provided with an automatic bag feeding device for conveying the packaging bags one by one to the main conveying device, the bag opening and bag filling station is provided with an automatic bag opening device for opening the packaging bags conveyed on the main conveying device and an automatic bag filling device for loading products into the opened packaging bags, and the bag sorting and sealing station is provided with an automatic bag sorting and sealing device for automatically sealing the packaging bags after tidying up the packaging bags.

[0004] The packaging equipment as described above, the automatic bag feeding device comprises: a bag feeding frame, a silo for temporarily storing packaging bags, and a one-by-one material taking mechanism for taking out the packaging bags from the silo one by one and transferring them to the main conveying device, the silo is arranged on the bag feeding frame and is located directly above the main conveying device, the bottom of the silo is provided with an output port for the packaging bags to pass through, and the one-by-one material taking mechanism comprises: a lifting seat, a turning frame and a lifting drive assembly, the lifting seat is slidably connected to the bag feeding frame, the lifting drive assembly is arranged on the bag feeding frame to drive the lifting seat to move up and down relative to the bag feeding frame, the lifting seat is rotatably connected with a turning shaft, the turning frame is connected to the turning shaft, the turning frame is provided with a first adsorption assembly for adsorbing the packaging bags, and a reversing guide mechanism is provided between the turning shaft and the bag feeding frame for guiding the turning shaft to rotate when the lifting seat moves from top to bottom to drive the first adsorption assembly on the turning frame to turn from an upward state to a downward state.

[0005] The packaging equipment as described above, the reversing guide mechanism comprises: a guide block and a crank, the crank is connected to the flip shaft and can rotate with the flip shaft, the crank is provided with a first slide groove, the guide block is pivotally connected to the bag feeding frame, the guide block is provided with a second slide groove in which the flip shaft can slide smoothly, the second slide groove comprises: an upper vertical section, an arc-shaped guide section and a lower vertical section that are connected in sequence, and the guide block is provided with a sliding column that can slide in the first slide groove; when the flip shaft moves from top to bottom with the lifting seat, the flip shaft can slide along the upper vertical section, the arc-shaped guide section and the lower vertical section, and when the flip shaft moves to the arc-shaped guide section, the flip shaft can drive the guide block to swing relative to the bag feeding frame, and at the same time, the sliding column and the first slide groove on the crank work together to drive the flip shaft to rotate.

[0006] In the packaging equipment as described above, the center line of the upper vertical section, the center line of the lower vertical section and the center of the sliding column are collinear, and the center line of the first sliding groove intersects with the axis of the flip shaft.

[0007] In a packaging device as described above, the material bin comprises: a left baffle, a right baffle, a front baffle and a rear baffle, a storage space for temporarily storing packaging bags is provided between the left baffle, the right baffle, the front baffle and the rear baffle, and a supporting edge for supporting the edge of the packaging bag is provided at the bottom of the storage space.

[0008] A packaging device as described above, wherein the bag feeding frame is provided with a guide rod, the left baffle and the right baffle are slidably connected to the guide rod, and the bag feeding frame is provided with a spacing adjustment component for adjusting the spacing between the left baffle and the right baffle, and the spacing adjustment component includes: a screw rod rotatably connected to the bag feeding frame, a handle for driving the screw rod to rotate, a first nut meshing with the screw rod, and a second nut meshing with the screw rod, the first nut is connected to the left baffle, and the second nut is connected to the right baffle.

[0009] A packaging device as described above, the lifting drive assembly includes: a first rack, a first gear, a second rack and a second gear, the first rack and the second rack are both connected to the lifting seat, the first gear is rotatably connected to the bag feeding frame and meshes with the first rack and the second gear, the second gear is rotatably connected to the bag feeding frame and meshes with the second rack and the first gear, and the lifting seat is provided with a lifting motor that drives the second rack to rotate to drive the lifting seat to rise and fall.

[0010] A packaging equipment as described above, the automatic bag opening device includes: a second adsorption component for adsorbing the lower side of the packaging bag, a third adsorption component for adsorbing the upper side of the packaging bag, a bag opening mechanism for driving the third adsorption component to move upward to separate the second adsorption component and the third adsorption component, and a bag pressing mechanism for pressing the edge of the lower side of the packaging bag.

[0011] A packaging device as described above, the bag pressing mechanism includes: a connecting seat, a lifting sliding seat, a horizontal sliding seat and a pressing hook, the lifting sliding seat is slidably connected to the connecting seat in the vertical direction, the horizontal sliding seat is slidably connected to the lifting sliding seat in the horizontal direction, the pressing hook is connected to the horizontal sliding seat, the connecting seat is connected to a guide block, the guide block is provided with a guide groove, the horizontal sliding seat is provided with a guide column that can move along the guide groove, and the connecting seat is provided with a bag pressing drive mechanism that drives the lifting sliding seat to move up and down and drives the horizontal sliding seat to move in the horizontal direction.

[0012] In the packaging equipment as described above, the guide groove comprises: a first guide segment, a transition guide segment and a second guide segment which are connected in sequence, and the center line of the first guide segment and the center line of the second guide segment are staggered with each other.

[0013] In the packaging equipment as described above, the bag pressing drive mechanism includes: a third rack, a third gear and a bag pressing motor, the third rack is connected to the lifting sliding seat, the bag pressing motor is connected to the connecting seat, the third gear is connected to the rotating shaft of the bag pressing motor, and the third gear and the third rack are meshed with each other.

[0014] In the packaging equipment as described above, the automatic bagging device comprises: a bagging frame, the bagging frame is provided with a pushing block for pushing the conveyed product into the opened packaging bag, and the bagging frame is provided with a pushing drive mechanism for driving the pushing block to move.

[0015] In the packaging equipment as described above, the pushing drive mechanism includes: a first pulley, a second pulley, a belt and a pushing motor, the first pulley and the second pulley are rotatably connected to the bagging machine frame, the belt is wound between the first pulley and the second pulley, a linkage block is provided between the belt and the pushing block, and the pushing motor drives the first pulley to rotate and then drives the pushing block to move.

[0016] A packaging equipment as described above, the automatic bag sorting and sealing device comprises: an automatic bag sorting mechanism and an automatic sealing mechanism, the automatic bag sorting mechanism comprises: a bag sorting frame, a bag sorting base, an upper left top support rod, a lower left top support rod, an upper right top support rod and a lower right top support rod, the bag sorting base is provided with a bag sorting driving mechanism for driving the upper left top support rod, the lower left top support rod, the upper right top support rod and the lower right top support rod to move left, right, up and down, the bag sorting base is also provided with a left inner folding rod, a right inner folding rod, and a bag folding driving mechanism for driving the left inner folding rod and the right inner folding rod to move left and right, the bag sorting base is slidably connected to the bag sorting frame in a horizontal direction, and the bag sorting frame is provided with a horizontal driver for driving the bag sorting base to slide in a horizontal direction.

[0017] According to the packaging equipment as described above, the bag sorting base is slidably connected with the first sliding seat and the second sliding seat in the horizontal direction, the left inner folding rod is arranged on the first sliding seat, and the right inner folding rod is arranged on the second sliding seat, and a first linkage mechanism is arranged between the first sliding seat and the second sliding seat for keeping the first sliding seat and the second sliding seat synchronously moving toward or away from each other, and the first linkage mechanism includes: a first linkage rack, a second linkage rack and a first linkage gear, the first linkage rack is connected to the first sliding seat, the second linkage rack is connected to the second sliding seat, and the first linkage gear is meshed with the first linkage rack and the second linkage rack at the same time, and the bag folding driving mechanism is a first linkage motor arranged on the bag sorting base to drive the first linkage gear to rotate and thereby drive the left inner folding rod and the right inner folding rod to synchronously move toward or away from each other.

[0018] According to the packaging equipment as described above, the bag sorting base is slidably connected with a third sliding seat and a fourth sliding seat in the horizontal direction, and a second linkage mechanism is provided between the third sliding seat and the fourth sliding seat for keeping the third sliding seat and the fourth sliding seat in synchronous movement toward or away from each other, and the second linkage mechanism includes: a third linkage rack, a fourth linkage rack and a second linkage gear, the third linkage rack is connected to the third sliding seat, the fourth linkage rack is connected to the fourth sliding seat, and the second linkage gear is meshed with the third linkage rack and the fourth linkage rack at the same time. The bag sorting driving mechanism comprises: a second linkage motor arranged on the bag sorting base for driving the second linkage gear to rotate and thereby driving the third sliding seat and the fourth sliding seat to synchronously move toward or away from each other; an upper left lifting slider and a lower left lifting slider are slidably connected to the third sliding seat in a vertical direction, a third linkage mechanism is arranged between the upper left lifting slider and the lower left lifting slider for keeping the upper left lifting slider and the lower left lifting slider in synchronous movement toward or away from each other, the upper left top support rod is connected to the upper left lifting slider, and the lower left top support rod is connected to the lower left lifting slider; An upper right lifting slider and a lower right lifting slider are slidably connected to the fourth sliding seat in the vertical direction, and a fourth linkage mechanism is provided between the upper right lifting slider and the lower right lifting slider for keeping the upper right lifting slider and the lower right lifting slider in synchronous movement toward or away from each other, the upper right top support rod is connected to the upper right lifting slider, and the lower right top support rod is connected to the lower right lifting slider; the bag sorting drive mechanism includes: a linkage drive mechanism for driving the upper left lifting slider or the lower left lifting slider to rise and fall and driving the upper right lifting slider or the lower right lifting slider to move.

[0019] A packaging device as described above, the linkage drive mechanism includes: a lifting transition seat, a left connecting block, a right connecting block and a lifting driver that drives the lifting transition seat to lift and lower, the lifting transition seat is slidably connected to the bag sorting base along the vertical direction, the left connecting block and the right connecting block are slidably connected to the lifting transition seat along the horizontal direction, the upper end of the left connecting block is connected to the lower left lifting slider, the upper end of the right connecting block is connected to the lower right lifting slider, and the lifting driver is connected to the bag sorting base to drive the lifting transition seat to lift and lower.

[0020] The packaging equipment as described above, the automatic sealing mechanism comprises: a sealing frame, an upper sealing sliding seat, a lower sealing sliding seat, an upper pressing bag assembly, a lower pressing bag assembly used in conjunction with the upper pressing bag assembly, an upper hot pressing block, and a lower hot pressing block used in conjunction with the upper hot pressing block, the upper sealing sliding seat and the lower sealing sliding seat being slidably connected to the sealing frame along the vertical direction, a fifth linkage mechanism is provided between the upper sealing sliding seat and the lower sealing sliding seat for keeping the upper sealing sliding seat and the lower sealing sliding seat to keep synchronously moving toward or away from each other, the sealing frame is provided with a sealing driver for driving the upper sealing sliding seat or the lower sealing sliding seat to rise and fall, the upper pressing bag assembly is connected to the upper part of the sealing frame, the lower pressing bag assembly is connected to the lower part of the sealing frame, the upper hot pressing block is connected to the upper sealing sliding seat, and the lower hot pressing block is connected to the lower sealing sliding seat.

[0021] In the packaging equipment as described above, the upper bag pressing assembly comprises: an upper pressing cylinder arranged on the sealing frame and an upper pressing block connected to the upper pressing cylinder; the lower bag pressing assembly comprises: a lower pressing cylinder arranged on the sealing frame and a lower pressing block connected to the lower pressing cylinder.

[0022] In the packaging equipment as described above, the automatic sealing mechanism further comprises: a sealing fixing frame, the sealing frame is slidably connected to the sealing fixing frame along the vertical direction, and the sealing fixing frame is provided with an adjusting component for adjusting the height of the sealing frame relative to the sealing fixing frame.

[0023] In a packaging device as described above, the main conveying device comprises: a conveying frame and a conveyor belt connected to the conveying frame, the conveying frame is provided with a negative pressure adsorption device cooperating with the conveyor belt, and the conveyor belt is provided with a plurality of adsorption holes which are used in cooperation with the negative pressure adsorption device to adsorb the packaging bag on the conveyor belt.

[0024] The beneficial effects of the present invention are: 1. The present invention conveys packaging bags one by one to the main conveying device through an automatic bag feeding device. The packaging bags are conveyed by the main conveying device and pass through the bag opening and bag filling station and the bag sorting and sealing station in sequence; when the packaging bags arrive at the bag opening and bag filling station, the automatic bag opening device first opens the packaging bags, and then the automatic bag filling device pushes the products conveyed by the product conveying line into the opened packaging bags; when the packaging bags arrive at the bag sorting and sealing station, the automatic bag sorting and sealing device first arranges the openings of the packaging bags neatly and then seals them, thereby completing automatic packaging; the present invention has the advantages of simple and compact structure, small footprint, high working efficiency and low failure rate.

[0025] 2. When the automatic bag feeding device is in use, the neatly stacked packaging bags are first placed in the silo. At the beginning, the first adsorption component on the flip frame faces upward and can adsorb the packaging bag at the bottom of the silo, and then the lifting drive component drives the lifting seat to move downward; during the downward movement of the lifting seat, the flip shaft rotates 180° under the guidance of the reversing guide mechanism, so that when the lifting seat drops to the lowest position, the first adsorption component faces downward. At this time, the first adsorption component is released, and the packaging bag can fall onto the main conveying device, and the cycle continues; only one power is needed to drive the lifting and flipping of the flip frame, which has the advantages of simple structure, low cost and easy maintenance.

[0026] 3. When the automatic bag opening device is in use, the second adsorption component adsorbs the lower side of the packaging bag, and the third adsorption component adsorbs the upper side of the packaging bag. The bag opening mechanism moves upward to separate the second adsorption component from the third adsorption component to open the packaging bag; the bag pressing mechanism presses the middle position of the edge of the lower side of the packaging bag to prevent the product from lifting the edge of the packaging bag when the automatic bagging device pushes the product into the packaging bag, causing failure of bag entry.

[0027] 4. When the bag pressing mechanism is in use, the bag pressing driving mechanism drives the lifting sliding seat to move downward. At the same time, the horizontal sliding seat moves in the horizontal direction, so that the pressing hook moves downward while moving toward the edge of the packaging bag until the pressing hook presses the edge of the bag. Only one power is needed to drive the pressing hook to perform actions in two directions, which has the advantages of simple structure, low cost and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the high-efficiency packaging equipment of the present invention; Figure 2 A schematic top view of the high-efficiency packaging device of the present invention; Figure 3 This is one of the structural schematic diagrams of the automatic bag feeding device in the high-efficiency packaging equipment of the present invention; Figure 4 This is the second structural schematic diagram of the automatic bag feeding device in the high-efficiency packaging equipment of the present invention; Figure 5 It is a schematic diagram of the process in which the lifting seat in the automatic bag feeding device of the present invention is turned over from top to bottom, and the turning shaft is turned over under the action of the reversing guide mechanism; Figure 6 It is a schematic diagram of the structure of the automatic bag opening device and the automatic bag filling device in the present invention; Figure 7 This is one of the structural schematic diagrams of the bag pressing mechanism in the automatic bag opening device of the present invention; Figure 8 This is the second structural schematic diagram of the bag pressing mechanism in the automatic bag opening device of the present invention; Fig. 9 It is a structural schematic diagram of the automatic bagging device in the present invention pushing the conveyed product; Fig.10 It is a schematic diagram of the structure of the automatic bagging device in the present invention; Fig.11 It is a schematic structural diagram of the automatic bag sorting and sealing device of the present invention; Fig.12 It is a structural schematic diagram of the automatic bag sorting mechanism in the automatic bag sorting and sealing device of the present invention; Fig.13 It is a structural schematic diagram of the automatic bag sorting mechanism (with some accessories hidden) in the automatic bag sorting and sealing device of the present invention; Fig.14 It is a structural schematic diagram of the automatic sealing mechanism in the automatic bag sorting and sealing device of the present invention; Fig.15 It is a schematic diagram for demonstrating the working principle of the automatic bag sorting mechanism in the present invention; Fig.16 It is a schematic diagram of the structure of the main conveying device in the automatic bag sorting and sealing device of the present invention. DETAILED DESCRIPTION

[0029] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] like Figures 1 to 16As shown, a packaging device of this embodiment includes: a main conveying device 1, along the conveying direction of the main conveying device 1 are sequentially provided with: a bag feeding station 101, a bag opening and bag filling station 102 and a bag sorting and sealing station 103, the bag feeding station 101 is provided with an automatic bag feeding device 2 for conveying the packaging bags 800 one by one to the main conveying device 1, the bag opening and bag filling station 102 is provided with an automatic bag opening device 3 for opening the packaging bags 800 conveyed on the main conveying device 1 and an automatic bag filling device 4 for loading products into the opened packaging bags 800, and the bag sorting and sealing station 103 is provided with an automatic bag sorting and sealing device 5 for automatically sealing the packaging bags 800 after arranging them neatly. The present invention conveys the packaging bags 800 one by one to the main conveying device 1 through an automatic bag feeding device. The packaging bags are conveyed by the main conveying device and pass through the bag opening and bag filling station and the bag sorting and sealing station in sequence; when the packaging bags arrive at the bag opening and bag filling station, the automatic bag opening device first opens the packaging bags, and then the automatic bag filling device pushes the products conveyed by the product conveying line into the opened packaging bags 800; when the packaging bags arrive at the bag sorting and sealing station, the automatic bag sorting and sealing device first arranges the openings of the packaging bags neatly and then seals them, thereby completing automatic packaging; the present invention has the advantages of simple and compact structure, small footprint, high working efficiency and low failure rate.

[0031] The automatic bag feeding device is used to convey neatly stacked packaging bags (this embodiment uses accordion bags with one side sealed and the other side not sealed) one by one to the main conveyor line.

[0032] like Figure 3-Figure 5As shown, the automatic bag feeding device 2 includes: a bag feeding frame 21, a silo 22 for temporarily storing packaging bags 800, and a one-by-one material taking mechanism 23 for taking out the packaging bags 800 from the silo 22 one by one and transferring them to the main conveying device 1. The silo 22 is arranged on the bag feeding frame 21 and is located directly above the main conveying device 1. The bottom of the silo 22 is provided with an output port for the packaging bags 800 to pass through. The one-by-one material taking mechanism 23 includes: a lifting seat 231, a flip frame 232 and a lifting drive assembly 233. The lifting seat 231 is slidably connected to the bag feeding frame 21. The lifting drive assembly 23 3 is arranged on the bag feeding frame 21 to drive the lifting seat 231 to move up and down relative to the bag feeding frame 21, the lifting seat 231 is rotatably connected with a flip shaft 234, the flip frame 232 is connected to the flip shaft 234, the flip frame 232 is provided with a first adsorption component 235 (only the present embodiment has a suction cup) for adsorbing the packaging bag 800, and a reversing guide mechanism 236 is provided between the flip shaft 234 and the bag feeding frame 21 for guiding the flip shaft 234 to rotate when the lifting seat 231 moves from top to bottom so as to drive the first adsorption component 235 on the flip frame 232 to flip from an upward state to a downward state. When in use, the neatly stacked packaging bags are first placed in the silo. At the beginning, the first adsorption component on the flip frame faces upward and can adsorb the packaging bag at the bottom of the silo. Then the lifting drive component drives the lifting seat to move downward (also with the flip frame moving downward); during the downward movement of the lifting seat, the flip shaft 234 rotates 180° under the guidance of the reversing guide mechanism 236 (the first adsorption component 235 on the flip frame 232 also flips with the packaging bag), so that when the lifting seat drops to the lowest position, the first adsorption component 235 faces downward, and at this time the first adsorption component 235 is released, and the packaging bag can fall onto the main conveying device, and the cycle continues. In addition, only one power (lifting drive component 233) is needed to drive the lifting and flipping of the flip frame, which has the advantages of simple structure, low cost, and easy maintenance.

[0033] In this embodiment, the reversing guide mechanism 236 includes: a guide block 2361 and a crank 2362, the crank 2362 is connected to the flip shaft 234 and can rotate with the flip shaft 234, the crank 2362 is provided with a first slide groove 23620, the guide block 2361 is pivotally connected to the bag feeding frame 21, and the guide block 2361 is provided with a second slide groove 23610 in which the flip shaft 234 can slide smoothly. In order to make the flip shaft 234 slide smoothly in the second slide groove 23610, a rotating ring (similar to a bearing) is sleeved at the position of the flip shaft 234 that contacts the second slide groove 23610; the second slide groove 23610 includes: an upper vertical section 23 connected in sequence; 6101, an arc-shaped guide section 236102 and a lower vertical section 236103, the guide block 2361 is provided with a sliding column 23611 which can slide in the first slide groove 23620; when the flip shaft 234 moves from top to bottom along with the lifting seat 231, the flip shaft 234 can slide along the upper vertical section 236101, the arc-shaped guide section 236102 and the lower vertical section 236103, and when the flip shaft 234 moves to the arc-shaped guide section 236102, the flip shaft 234 can drive the guide block 2361 to swing relative to the bag feeding frame 21, and at the same time, the sliding column 23611 and the first slide groove 23620 on the crank 2362 can work together to drive the flip shaft 234 to rotate.

[0034] Now combine with Figure 3-5 , the working principle of the reversing guide mechanism 236 is described: First, the lifting seat can only be lifted in the vertical direction (cannot move left and right), so the flip axis can only be lifted in the vertical direction, and the flip axis and flip frame can rotate relative to the lifting seat; Second, because the flip shaft 234 can slide smoothly in the second slide groove 23610 on the guide block 2361, and the guide block 2361 is pivotally connected to the bag feeding frame 21, the guide block 2361 can swing relative to the bag feeding frame during the downward movement of the flip shaft; Third, the crank 2362 is connected to the flip shaft 234 and can rotate with the flip shaft 234. A first slide groove 23620 is provided on the crank 2362, and a sliding column 23611 that can slide in the first slide groove 23620 is provided on the guide block 2361. Therefore, when the flip shaft moves downward and passes through the arc guide section 236102, the sliding column 23611 and the first slide groove 23620 on the crank 2362 work together to drive the crank 2362 to flip, thereby driving the flip shaft 234 to rotate, thereby driving the first adsorption component 235 on the flip frame 232 to flip from an upward state to a downward state.

[0035] In order to prevent the guide block 2361 from swinging relative to the bag feeding frame when the flip shaft starts moving downward and when the flip shaft ends moving downward, the center line of the upper vertical section 236101, the center line of the lower vertical section 236103 and the center line of the sliding column 23611 are collinear, and the center line of the first slide groove 23620 intersects with the axis of the flip shaft 234.

[0036] In this embodiment, the silo 22 comprises: a left baffle 221, a right baffle 222, a front baffle 223 and a rear baffle 224. A storage space 2202 for temporarily storing the packaging bag 800 is provided between the left baffle 221, the right baffle 222, the front baffle 223 and the rear baffle 224. A support edge 225 for supporting the edge of the packaging bag 800 is provided at the bottom of the storage space 2202. The support edge 225 is used to support the edge of the packaging bag 800. Since the packaging bag is made of a deformable plastic film, when the first adsorption component moves downward, the packaging bag at the bottom of the storage space 2202 can be torn off from the support edge 225.

[0037] In this embodiment, in order to adjust the distance between the left baffle 221 and the right baffle 222 to accommodate packaging bags of more sizes, a guide rod 24 is provided on the bag feeding frame 21, and the left baffle 221 and the right baffle 222 are slidably connected to the guide rod 24. The bag feeding frame 21 is provided with a distance adjustment component 25 for adjusting the distance between the left baffle 221 and the right baffle 222. The distance adjustment component 25 includes: a screw rod 251 rotatably connected to the bag feeding frame 21, a handle 252 for driving the screw rod 251 to rotate, a first nut 253 engaged with the screw rod 251, and a second nut 254 engaged with the screw rod 251. The first nut 253 is connected to the left baffle 221, and the second nut 254 is connected to the right baffle 222.

[0038] In this embodiment, the lifting drive assembly 233 includes: a first rack 2331, a first gear 2332, a second rack 2333 and a second gear 2334. The first rack 2331 and the second rack 2333 are both connected to the lifting seat 231. The first gear 2332 is rotatably connected to the bag feeding frame 21 and meshes with the first rack 2331 and the second gear 2334. The second gear 2334 is rotatably connected to the bag feeding frame 21 and meshes with the second rack 2333 and the first gear 2332. The lifting seat 231 is provided with a lifting motor 2335 that drives the second rack 2333 to rotate to drive the lifting seat 231 to rise and fall. With such a design, the lifting seat can be lifted and lowered more smoothly.

[0039] like Figure 6-Figure 8As shown, in order to open the packaging bag moved to the bag opening and bagging station, the automatic bag opening device 3 includes: a second adsorption component 31 for adsorbing the lower side of the packaging bag 800, a third adsorption component 32 for adsorbing the upper side of the packaging bag 800, a bag opening mechanism 33 for driving the third adsorption component 32 to move upward to separate the second adsorption component 31 and the third adsorption component 32, and a bag pressing mechanism 34 for pressing the edge of the lower side of the packaging bag 800. When in use, the second adsorption component 31 adsorbs the lower side of the packaging bag 800, the third adsorption component 32 adsorbs the upper side of the packaging bag 800, the bag opening mechanism 33 moves upward to separate the second adsorption component 31 and the third adsorption component 32, and then opens the packaging bag; the bag pressing mechanism 34 presses the middle position of the edge of the lower side of the packaging bag 800 to prevent the product from lifting the edge of the packaging bag when the automatic bagging device pushes the product into the packaging bag, resulting in failure of bag entry.

[0040] like Figure 7 and Figure 8 As shown, the bag pressing mechanism 34 includes: a connecting seat 341, a lifting sliding seat 342, a horizontal sliding seat 343 and a pressing hook 344. The lifting sliding seat 342 is slidably connected to the connecting seat 341 along the vertical direction, the horizontal sliding seat 343 is slidably connected to the lifting sliding seat 342 along the horizontal direction, the pressing hook 344 is connected to the horizontal sliding seat 343, the connecting seat 341 is connected with a guide block 345, the guide block 345 is provided with a guide groove 3450, the horizontal sliding seat 343 is provided with a guide column 3431 that can move along the guide groove 3450, and the connecting seat 341 is provided with a bag pressing drive mechanism 346 that drives the lifting sliding seat 342 to move up and down and drives the horizontal sliding seat 343 to move horizontally. When in use, the bag pressing drive mechanism 346 drives the lifting sliding seat 342 to move downward. At the same time, the horizontal sliding seat 343 moves in the horizontal direction, so that the pressing hook 344 moves downward while moving toward the edge of the packaging bag until the pressing hook 344 presses the edge of the bag. In addition, only one power (the bag pressing drive mechanism 346) is needed to drive the pressing hook 344 to perform actions in two directions, which has the advantages of simple structure, low cost and easy maintenance.

[0041] In this embodiment, the guide groove 3450 includes: a first guide segment 34501, a transition guide segment 34502 and a second guide segment 34503 which are connected in sequence. The center line of the first guide segment 34501 and the center line of the second guide segment 34503 are offset from each other. The offset distance between the first guide segment 34501 and the second guide segment 34503 is the distance that the pressing hook 344 moves in the horizontal direction.

[0042] In this embodiment, the bag pressing drive mechanism 346 includes: a third rack 3461, a third gear 3462 and a bag pressing motor 3463, the third rack 3461 is connected to the lifting sliding seat 342, the bag pressing motor 3463 is connected to the connecting seat 341, the third gear 3462 is connected to the rotating shaft of the bag pressing motor 3463, and the third gear 3462 and the third rack 3461 are meshed with each other.

[0043] like Figure 6 , Fig. 9 and Fig.10 As shown, the automatic bagging device 4 is used to push the products conveyed by the product conveying line into the opened packaging bag 800, and the automatic bagging device 4 includes: a bagging frame 41, the bagging frame 41 is provided with a pushing block 42 for pushing the conveyed products into the opened packaging bag 800, and the bagging frame 41 is provided with a pushing drive mechanism 43 for driving the pushing block 42 to move.

[0044] In this embodiment, the pushing drive mechanism 43 includes: a first pulley 431, a second pulley 432, a belt 433 and a pushing motor 434. The first pulley 431 and the second pulley 432 are rotatably connected to the bagging machine frame 41, and the belt 433 is wound between the first pulley 431 and the second pulley 432. A linkage block 435 is provided between the belt 433 and the pushing block 42. The pushing motor 434 drives the first pulley 431 to rotate and then drives the pushing block 42 to move.

[0045] like Figure 11-Figure 15 As shown, the automatic bag sorting and sealing device 5 is used to sort the openings of the packaging bags and then seal them. The automatic bag sorting and sealing device 5 includes: an automatic bag sorting mechanism 51 and an automatic sealing mechanism 52. The automatic bag sorting mechanism 51 includes: a bag sorting frame 511, a bag sorting base 512, an upper left top support rod 5131, a lower left top support rod 5132, an upper right top support rod 5133 and a lower right top support rod 5134. The bag sorting base 512 is provided with a driving mechanism for driving the upper left top support rod 5131, the lower left top support rod 5132, the upper right top support rod 5133 and the lower right top support rod 5134. The upper support rod 5133 and the right lower support rod 5134 are used to carry out left, right, up and down movement of the bag sorting driving mechanism 516. The bag sorting base 512 is also provided with a left inner folding rod 517, a right inner folding rod 518, and a bag folding driving mechanism 519 which drives the left inner folding rod 517 and the right inner folding rod 518 to move left and right. The bag sorting base 512 is connected to the bag sorting machine frame 511 in a horizontal sliding direction. The bag sorting machine frame 511 is provided with a horizontal driver which drives the bag sorting base 512 to slide in a horizontal direction.

[0046] Now combine with Fig.15The working principle of the automatic bag sorting mechanism 51 is briefly described as follows: first, the bag sorting driving mechanism 516 first adjusts the positions of the upper left top support rod 5131, the lower left top support rod 5132, the upper right top support rod 5133 and the lower right top support rod 5134 so that they can extend into the packaging bag; second, the horizontal driver drives the bag sorting base 512 to move toward the packaging bag so that the upper left top support rod 5131, the lower left top support rod 5132, the upper right top support rod 5133 and the lower right top support rod 5134 extend into the packaging bag; third, the bag sorting driving mechanism 516 adjusts the upper left top support rod 5131, the lower left top support rod 5132, the upper right top support rod 5133 and the lower right top support rod 5134 133 and the lower right top support rod 5134 are positioned to open the four corners of the packaging bag (the upper left top support rod 5131, the lower left top support rod 5132, the upper right top support rod 5133 and the lower right top support rod 5134 are roughly distributed in a rectangle); finally, the bag folding drive mechanism 519 drives the left inner folding rod 517 and the right inner folding rod 518 to move, driving the left and right sides of the packaging bag to fold inward. At the same time, the upper left top support rod 5131 and the lower left top support rod 5132 are retracted into each other, and the upper right top support rod 5133 and the lower right top support rod 5134 are retracted into each other, thereby completing the bag sorting process (the opening of the packaging bag is neatly arranged and folded).

[0047] In this embodiment, the left inner folding rod 517 and the right inner folding rod 518 only need to move left and right in the horizontal direction. The bag sorting base 512 is connected to the first sliding seat 5121 and the second sliding seat 5122 in a sliding manner in the horizontal direction. The left inner folding rod 517 is arranged on the first sliding seat 5121, and the right inner folding rod 518 is arranged on the second sliding seat 5122. A first linkage mechanism 5125 is provided between the first sliding seat 5121 and the second sliding seat 5122 for keeping the first sliding seat 5121 and the second sliding seat 5122 in synchronous movement toward or away from each other. The first linkage mechanism 5125 includes: a first The linkage rack 51251, the second linkage rack 51252 and the first linkage gear 51253, the first linkage rack 51251 is connected to the first sliding seat 5121, the second linkage rack 51252 is connected to the second sliding seat 5122, the first linkage gear 51253 is meshed with the first linkage rack 51251 and the second linkage rack 51252 at the same time, and the bag folding driving mechanism 519 is a first linkage motor arranged on the bag sorting base 512 to drive the first linkage gear 51253 to rotate and then drive the left inner folding rod 517 and the right inner folding rod 518 to synchronously move toward or away from each other. With the above design, only one power source (the first linkage motor) is needed to drive the left inner folding rod 517 and the right inner folding rod 518 to synchronously move toward each other.

[0048] In this embodiment, the upper left support rod 5131, the lower left support rod 5132, the upper right support rod 5133 and the lower right support rod 5134 all need to move left, right, up and down. For this purpose, the bag sorting base 512 is slidably connected to the third sliding seat 5123 and the fourth sliding seat 5124 in the horizontal direction. There is a device between the third sliding seat 5123 and the fourth sliding seat 5124 for keeping the third sliding seat 5123 and the fourth sliding seat 5124 in synchronization and moving toward or away from each other. The second linkage mechanism 5126 of the movement comprises: a third linkage rack 51261, a fourth linkage rack 51262 and a second linkage gear 51263, wherein the third linkage rack 51261 is connected to the third sliding seat 5123, the fourth linkage rack 51262 is connected to the fourth sliding seat 5124, and the second linkage gear 51263 is meshed with the third linkage rack 51261 and the fourth linkage rack 51262 at the same time In combination, the bag sorting driving mechanism 516 comprises: a second linkage motor 5161 arranged on the bag sorting base 512 for driving the second linkage gear 51263 to rotate and thereby drive the third sliding seat 5123 and the fourth sliding seat 5124 to synchronously move toward or away from each other; an upper left lifting slider 5141 and a lower left lifting slider 5142 are slidably connected to the third sliding seat 5123 in the vertical direction, and a third linkage mechanism 5143 is arranged between the upper left lifting slider 5141 and the lower left lifting slider 5142 for keeping the upper left lifting slider 5141 and the lower left lifting slider 5142 to synchronously move toward or away from each other (the working principle of the third linkage mechanism is similar to that of the first linkage mechanism 5126, except that there is no power source similar to the first linkage motor, which will not be repeated in this application), the upper left top support rod 5131 is connected to the upper left lifting slider 5141, and the lower left top support rod 5132 is connected to the lower left lifting slider 5142; An upper right lifting slider 5144 and a lower right lifting slider 5145 are slidably connected to the fourth sliding seat 5124 in the vertical direction, and a fourth linkage mechanism 5146 is provided between the upper right lifting slider 5144 and the lower right lifting slider 5145 for keeping the upper right lifting slider 5144 and the lower right lifting slider 5145 in synchronous movement toward or away from each other (the working principle of the fourth linkage mechanism is similar to that of the first linkage mechanism 5126, except that there is no power source similar to the first linkage motor, which will not be repeated in this application), the upper right supporting rod 5133 is connected to the upper right lifting slider 5144, and the lower right supporting rod 5134 is connected to the lower right lifting slider 5145; the bag sorting drive mechanism 516 includes: a linkage drive mechanism 5162 for driving the upper left lifting slider 5141 or the lower left lifting slider 5142 to rise and fall and driving the upper right lifting slider 5144 or the lower right lifting slider 5145 to move.Such a design can realize that the upper left support rod 5131, the lower left support rod 5132, the upper right support rod 5133 and the lower right support rod 5134 can all move left, right, up and down, and the structure is simple and maintenance is convenient.

[0049] In this embodiment, because there is a third linkage mechanism 5143 between the upper left lifting slider 5141 or the lower left lifting slider 5142, and a fourth linkage mechanism between the upper right lifting slider 5144 or the lower right lifting slider 5145, the linkage drive mechanism 5162 is used to drive the lower left lifting slider 5142 to rise and fall and drive the lower right lifting slider 5145 to rise and fall; the linkage drive mechanism 5162 includes: a lifting transition seat 51621, a left connecting block 51622, a right connecting block 51623, and a lifting driver 5162 that drives the lifting transition seat 51621 to rise and fall. 4. The lifting transition seat 51621 is slidably connected to the bag sorting base 512 in the vertical direction, the left connecting block 51622 and the right connecting block 51623 are slidably connected to the lifting transition seat 51621 in the horizontal direction, the upper end of the left connecting block 51622 is connected to the lower left lifting slider 5142, the upper end of the right connecting block 51623 is connected to the lower right lifting slider 5145, and the lifting driver 51624 is connected to the bag sorting base 512 to drive the lifting transition seat 51621 to rise and fall, and the lifting driver 51624 can be a cylinder or the like. With the above design, the left connecting block 51622 can move along the horizontal direction with the lower left lifting slider 5142, and can also drive the lower left lifting slider 5142 to rise and fall; the right connecting block can move along the horizontal direction with the lower right lifting slider, and can also drive the lower left lifting slider 5142 to rise and fall.

[0050] In this embodiment, the automatic sealing mechanism 52 is used to seal the packaging bag after the automatic bag sorting mechanism has arranged the openings of the packaging bag in order. The automatic sealing mechanism 52 includes: a sealing frame 521, an upper sealing sliding seat 522, a lower sealing sliding seat 523, an upper bag pressing assembly 524, a lower bag pressing assembly 525 used in conjunction with the upper bag pressing assembly 524, an upper hot pressing block 526, and a lower hot pressing block 527 used in conjunction with the upper hot pressing block 526. The upper sealing sliding seat 522 and the lower sealing sliding seat 523 are slidably connected to the sealing frame 521 in the vertical direction. The upper sealing sliding seat 522 and the lower sealing sliding seat 523 are slidably connected to the sealing frame 521 in the vertical direction. A fifth linkage mechanism 528 is provided between the upper sealing sliding seat 522 and the lower sealing sliding seat 523 to keep the upper sealing sliding seat 522 and the lower sealing sliding seat 523 moving toward or away from each other synchronously. The sealing frame 521 is provided with a sealing driver 529 for driving the upper sealing sliding seat 522 or the lower sealing sliding seat 523 to rise and fall. The upper bag pressing assembly 524 is connected to the upper part of the sealing frame 521, the lower bag pressing assembly 525 is connected to the lower part of the sealing frame 521, the upper hot pressing block 526 is connected to the upper sealing sliding seat 522, and the lower hot pressing block 527 is connected to the lower sealing sliding seat 523. When in use, the upper bag pressing assembly 524 and the lower bag pressing assembly 525 act simultaneously to temporarily position the packaging bag with the opening arranged, and then the sealing driver drives the upper hot pressing block and the lower hot pressing block to heat-seal the opening of the packaging bag to complete the sealing.

[0051] In this embodiment, the upper pressing bag assembly 524 includes: an upper pressing cylinder 5241 arranged on the sealing frame 521 and an upper pressing block 5242 connected to the upper pressing cylinder 5241; the lower pressing bag assembly 525 includes: a lower pressing cylinder 5251 arranged on the sealing frame 521 and a lower pressing block 5252 connected to the lower pressing cylinder 5251.

[0052] In order to facilitate the adjustment of the working height during sealing, the automatic sealing mechanism 52 also includes: a sealing fixed frame 520, the sealing frame 521 is slidably connected to the sealing fixed frame 520 along the vertical direction, and the sealing fixed frame 520 is provided with a height adjustment component 5201 for adjusting the sealing frame 521 relative to the sealing fixed frame 520.

[0053] In this embodiment, the main conveying device 1 includes: a conveying frame 11 and a conveyor belt 12 connected to the conveying frame 11, the conveying frame 11 is provided with a negative pressure adsorption device 13 that cooperates with the conveyor belt 12, and the conveyor belt 12 is provided with a plurality of adsorption holes 121 that cooperate with the negative pressure adsorption device 13 to adsorb the packaging bag 800 on the conveyor belt 12. The negative pressure adsorption device can adsorb the packaging bag on the conveyor belt 12 to avoid dislocation and realize accurate transportation of the packaging bag.

[0054] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A packaging device comprising: The main conveying device (1) is characterized in that: a bag feeding station (101), a bag opening and bag filling station (102) and a bag sorting and sealing station (103) are sequentially arranged along the conveying direction of the main conveying device (1); the bag feeding station (101) is provided with an automatic bag feeding device (2) for conveying packaging bags (800) one by one to the main conveying device (1); the bag opening and bag filling station (102) is provided with an automatic bag opening device (3) for opening the packaging bags (800) conveyed on the main conveying device (1) and an automatic bag filling device (4) for loading products into the opened packaging bags (800); and the bag sorting and sealing station (103) is provided with an automatic bag sorting and sealing device (5) for automatically sealing the packaging bags (800) after arranging them neatly.

2. A packaging device according to claim 1, characterized in that: The automatic bag feeding device (2) comprises: a bag feeding frame (21), a silo (22) for temporarily storing packaging bags (800), and a one-by-one material taking mechanism (23) for taking out the packaging bags (800) from the silo (22) one by one and transferring them to the main conveying device (1). The silo (22) is arranged on the bag feeding frame (21) and is located directly above the main conveying device (1). The bottom of the silo (22) is provided with an output port for the packaging bags (800) to pass through. The one-by-one material taking mechanism (23) comprises: a lifting seat (231), a flip frame (232) and a lifting drive assembly (233). The lifting seat (231) is slidably connected to the bag feeding frame (21). The lifting seat (231) is slidably connected to the bag feeding frame (21). A driving assembly (233) is arranged on the bag feeding frame (21) to drive the lifting seat (231) to move up and down relative to the bag feeding frame (21); a flip shaft (234) is rotatably connected to the lifting seat (231); the flip frame (232) is connected to the flip shaft (234); a first adsorption assembly (235) for adsorbing the packaging bag (800) is arranged on the flip frame (232); and a reversing guide mechanism (236) is arranged between the flip shaft (234) and the bag feeding frame (21) for guiding the flip shaft (234) to rotate when the lifting seat (231) moves from top to bottom so as to drive the first adsorption assembly (235) on the flip frame (232) to flip from an upward state to a downward state.

3. A packaging device according to claim 2, characterized in that: The reversing guide mechanism (236) comprises: a guide block (2361) and a crank (2362), wherein the crank (2362) is connected to the flip shaft (234) and can rotate with the flip shaft (234), and the crank (2362) is provided with a first slide groove (23620), the guide block (2361) is pivotally connected to the bag feeding frame (21), and the guide block (2361) is provided with a second slide groove (23610) in which the flip shaft (234) can slide smoothly, and the second slide groove (23610) comprises: an upper vertical section (236101), an arc-shaped guide section (236102) and a lower vertical section (236103) which are connected in sequence, and the guide block (236101) is connected to the flip shaft (234) and the arc-shaped guide section (236102) and the lower vertical section (236103) which are connected in sequence. The guide block (2361) is provided with a sliding column (23611) which can slide in the first sliding groove (23620); when the flip shaft (234) moves from top to bottom along with the lifting seat (231), the flip shaft (234) can slide along the upper vertical section (236101), the arc-shaped guide section (236102) and the lower vertical section (236103), and when the flip shaft (234) moves to the arc-shaped guide section (236102), the flip shaft (234) can drive the guide block (2361) to swing relative to the bag feeding frame (21), and at the same time, the sliding column (23611) and the first sliding groove (23620) on the crank (2362) work together to drive the flip shaft (234) to rotate.

4. A packaging device according to claim 1, characterized in that: The automatic bag opening device (3) comprises: a second adsorption component (31) for adsorbing the lower side of the packaging bag (800), a third adsorption component (32) for adsorbing the upper side of the packaging bag (800), a bag opening mechanism (33) for driving the third adsorption component (32) to move upward to separate the second adsorption component (31) and the third adsorption component (32), and a bag pressing mechanism (34) for pressing the edge of the lower side of the packaging bag (800).

5. A packaging device according to claim 4, characterized in that: The bag pressing mechanism (34) comprises: a connecting seat (341), a lifting sliding seat (342), a horizontal sliding seat (343) and a pressing hook (344); the lifting sliding seat (342) is slidably connected to the connecting seat (341) in a vertical direction; the horizontal sliding seat (343) is slidably connected to the lifting sliding seat (342) in a horizontal direction; the pressing hook (344) is connected to the horizontal sliding seat (343); the connecting seat (341) is connected to a guide block (345); the guide block (345) is provided with a guide groove (3450); the horizontal sliding seat (343) is provided with a guide column (3431) that can move along the guide groove (3450); the connecting seat (341) is provided with a bag pressing driving mechanism (346) that drives the lifting sliding seat (342) to move up and down and drives the horizontal sliding seat (343) to move in the horizontal direction.

6. A packaging device according to claim 1, characterized in that: The automatic bagging device (4) comprises: a bagging frame (41), the bagging frame (41) being provided with a pushing block (42) for pushing the conveyed product into the opened packaging bag (800), and the bagging frame (41) being provided with a pushing drive mechanism (43) for driving the pushing block (42) to move.

7. A packaging device according to claim 1, characterized in that: The automatic bag sorting and sealing device (5) comprises: an automatic bag sorting mechanism (51) and an automatic sealing mechanism (52); the automatic bag sorting mechanism (51) comprises: a bag sorting frame (511), a bag sorting base (512), an upper left top support rod (5131), a lower left top support rod (5132), an upper right top support rod (5133) and a lower right top support rod (5134); the bag sorting base (512) is provided with a driving mechanism for driving the upper left top support rod (5131), the lower left top support rod (5132), the upper right top support rod (5133) and the lower right top support rod (5134); A bag sorting driving mechanism (516) is provided for the support rod (5134) to move left, right, up and down; the bag sorting base (512) is also provided with a left inner folding rod (517), a right inner folding rod (518), and a bag folding driving mechanism (519) for driving the left inner folding rod (517) and the right inner folding rod (518) to move left and right; the bag sorting base (512) is connected to the bag sorting machine frame (511) in a sliding manner in a horizontal direction; and the bag sorting machine frame (511) is provided with a horizontal driver for driving the bag sorting base (512) to slide in a horizontal direction.

8. A packaging device according to claim 14, characterized in that: The bag sorting base (512) is slidably connected with a first sliding seat (5121) and a second sliding seat (5122) in a horizontal direction. The left inner folding rod (517) is arranged on the first sliding seat (5121), and the right inner folding rod (518) is arranged on the second sliding seat (5122). A first linkage mechanism (5125) is arranged between the first sliding seat (5121) and the second sliding seat (5122) for keeping the first sliding seat (5121) and the second sliding seat (5122) in synchronous movement toward or away from each other. The first linkage mechanism (5125) comprises: a first linkage rack (51251), a second linkage rack The first linkage rack (51251) is connected to the first sliding seat (5121), the second linkage rack (51252) is connected to the second sliding seat (5122), the first linkage gear (51253) is meshed with the first linkage rack (51251) and the second linkage rack (51252), and the bag folding driving mechanism (519) is a first linkage motor arranged on the bag sorting base (512) for driving the first linkage gear (51253) to rotate and thereby driving the left inner folding rod (517) and the right inner folding rod (518) to synchronously move toward or away from each other.

9. A packaging device according to claim 8, characterized in that: The bag sorting base (512) is slidably connected with a third sliding seat (5123) and a fourth sliding seat (5124) in the horizontal direction. A second linkage mechanism (5126) is provided between the third sliding seat (5123) and the fourth sliding seat (5124) for keeping the third sliding seat (5123) and the fourth sliding seat (5124) in synchronous movement toward or away from each other. The second linkage mechanism (5126) comprises: a third linkage rack (51261), a fourth linkage rack (51262) and a second linkage gear (51263). The third linkage rack (51261) is connected to the third sliding seat (5123), the fourth linkage rack (51262) is connected to the fourth sliding seat (5124), and the second linkage gear (51263) is meshed with the third linkage rack (51261) and the fourth linkage rack (51262) at the same time. The bag sorting drive mechanism (516) comprises: a second linkage motor (5161) arranged on the bag sorting base (512) for driving the second linkage gear (51263) to rotate and thereby drive the third sliding seat (5123) and the fourth sliding seat (5124) to synchronously move toward or away from each other; an upper left lifting slider (5141) and a lower left lifting slider (5142) are slidably connected to the third sliding seat (5123) in the vertical direction; a third linkage mechanism (5143) is arranged between the upper left lifting slider (5141) and the lower left lifting slider (5142) for keeping the upper left lifting slider (5141) and the lower left lifting slider (5142) to synchronously move toward or away from each other; the upper left top support rod (5131) is connected to the upper left lifting slider (5141); and the lower left top support rod (5132) is connected to the lower left lifting slider (5142); An upper right lifting slider (5144) and a lower right lifting slider (5145) are slidably connected to the fourth sliding seat (5124) in the vertical direction; a fourth linkage mechanism (5146) is provided between the upper right lifting slider (5144) and the lower right lifting slider (5145) for keeping the upper right lifting slider (5144) and the lower right lifting slider (5145) in synchronous movement toward or away from each other; the upper right supporting rod (5133) is connected to the upper right lifting slider (5144); and the lower right supporting rod (5134) is connected to the lower right lifting slider (5145); and the bag sorting driving mechanism (516) comprises: a linkage driving mechanism (5162) for driving the upper left lifting slider (5141) or the lower left lifting slider (5142) to rise and fall and driving the upper right lifting slider (5144) or the lower right lifting slider (5145) to move.

10. A packaging device according to claim 8, characterized in that: The automatic sealing mechanism (52) comprises: a sealing frame (521), an upper sealing sliding seat (522), a lower sealing sliding seat (523), an upper pressing bag assembly (524), a lower pressing bag assembly (525) used in conjunction with the upper pressing bag assembly (524), an upper hot pressing block (526), ​​and a lower hot pressing block (527) used in conjunction with the upper hot pressing block (526). The upper sealing sliding seat (522) and the lower sealing sliding seat (523) are slidably connected to the sealing frame (521) in a vertical direction. A device for sliding the upper sealing sliding seat (522) and the lower sealing sliding seat (523) is provided between the upper sealing sliding seat (522) and the lower sealing sliding seat (523) to allow the upper sealing sliding seat to move. The upper sealing sliding seat (522) and the lower sealing sliding seat (523) are kept in synchronization with each other to move toward or away from each other. The sealing frame (521) is provided with a sealing driver (529) for driving the upper sealing sliding seat (522) or the lower sealing sliding seat (523) to rise and fall. The upper pressing bag assembly (524) is connected to the upper part of the sealing frame (521), the lower pressing bag assembly (525) is connected to the lower part of the sealing frame (521), the upper hot pressing block (526) is connected to the upper sealing sliding seat (522), and the lower hot pressing block (527) is connected to the lower sealing sliding seat (523).

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