Carton unscrambler

Abstract

The application discloses a carton opening machine, which comprises a machine body, a feeding mechanism, an adhesive tape opening mechanism, a cover opening mechanism, a feeding mechanism, a discharging mechanism and a carton folding mechanism are installed on the machine body, the adhesive tape opening mechanism is installed on the feeding mechanism and cuts the adhesive tape at the upper and lower sealing positions of the carton conveyed on the feeding mechanism; the feeding mechanism is connected with the cover opening mechanism, and the cover opening mechanism is used for opening the carton cover at the top of the carton; the feeding mechanism is installed above the machine body and is used for taking out the material in the carton and feeding the material to the discharging mechanism, and the empty carton after the material is taken out is fed to the carton folding mechanism; the grabbing suction cup of the feeding mechanism is installed on a mechanical hand below a synchronous belt truss; and the carton folding mechanism is used for folding and storing the empty carton. The device can quickly open the outer packaging carton and take out the material, and can effectively fold and store the empty carton, thereby effectively improving the carton opening and material taking efficiency.

Description

Technical Field

[0001] This invention belongs to the field of cardboard box unpacking and material handling equipment, and specifically relates to a cardboard box opening machine. Background Technology

[0002] Pharmaceutical products are typically transported in cardboard boxes. For vials, they are usually placed in trays, which are then sealed with plastic film before being stacked in the cardboard box. Subsequent processing of the vials requires unpacking the outer cardboard box and removing the trays. Currently, this unpacking and material handling is done manually by workers, which is time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention aims to provide a carton opening machine. This device can quickly open and retrieve materials from outer packaging cartons, and can effectively fold and store empty cartons, thereby significantly improving the efficiency of carton opening and material retrieval.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A carton opening machine includes a machine body on which are mounted a feeding mechanism, a tape-cutting mechanism, a lid-opening mechanism, a feeding mechanism, a unloading mechanism, and a carton folding mechanism. The tape-cutting mechanism is mounted on the feeding mechanism and cuts the tape at the top and bottom sealing openings of the cartons conveyed by the feeding mechanism. The feeding mechanism is connected to the lid-opening mechanism, which is used to open the top lid of the carton. The feeding mechanism is mounted above the machine body and is used to remove the material from the carton and send it to the unloading mechanism, and to send the empty cartons to the carton folding mechanism. The feeding mechanism includes a synchronous belt truss and a gripping suction cup. The synchronous belt truss is mounted above the machine body, and the gripping suction cup is mounted on a robotic arm below the synchronous belt truss. The carton folding mechanism is used to fold and store the empty cartons.

[0005] Preferably, the feeding mechanism includes a first conveyor, and the tape-opening mechanism includes two clamping conveyor belts and two cutters. The two clamping conveyor belts are horizontally and symmetrically installed on both sides of the first conveyor, and the two cutters are vertically and symmetrically fixed on the first conveyor and correspond to the tape at the top and bottom sealing openings of the carton.

[0006] Preferably, the opening mechanism includes a second feeder, a lifting drive mechanism, and an opening assembly. The table of the machine body has a material inlet. The second feeder is vertically movable below the material inlet and is horizontally connected to the tail of the first feeder. The second feeder is installed on the lifting part of the lifting drive mechanism. The opening assembly is installed at the upper material inlet.

[0007] Preferably, the lid opening assembly includes two first lid openers and two second lid openers. The two first lid openers are symmetrically arranged on the left and right sides of the material inlet and are used to open the two upper folding lids of the carton. The two second lid openers are symmetrically arranged on the front and rear sides of the material inlet and are used to open the two lower folding rods of the carton.

[0008] Preferably, the first lid opener includes a movable plate, a first telescopic cylinder, a first movable plate, and a first negative pressure nozzle. The movable plate is horizontally slidably mounted on a table surface, and a first horizontal drive assembly is provided on the table surface to drive the movable plate to move horizontally. The first negative pressure nozzle is mounted on the first movable plate and connected to an external negative pressure source. One end of a first connecting rod is vertically fixed to the lower front and rear sides of the first movable plate, and the other end of the first connecting rod is vertically fixed to a rotating shaft, which is horizontally rotatably mounted on the movable plate. One end of a second connecting rod is also vertically fixed to one of the rotating shafts, and the other end of the second connecting rod is rotatably connected to the piston rod of the first telescopic cylinder. The tail of the first telescopic cylinder is rotatably connected to the movable plate.

[0009] Preferably, the first horizontal drive assembly includes a motor-driven lead screw, which is horizontally mounted on the table, and the moving plates of the two first cover openers are respectively threaded onto the positive and negative threads on both sides of the lead screw.

[0010] Preferably, the second cover opener includes a horizontal telescopic cylinder, a vertical telescopic cylinder, a fixed plate, a second movable plate, a third connecting rod, and a second negative pressure suction nozzle. The horizontal telescopic cylinder is horizontally installed at the feed inlet, the fixed plate is fixedly connected to the piston rod of the horizontal telescopic cylinder, the vertical telescopic cylinder is vertically installed on the fixed plate, the second negative pressure suction nozzle connected to an external negative pressure source is installed on the second movable plate, the lower part of the second movable plate is rotatably connected to the piston rod of the vertical telescopic cylinder, and the two ends of the third connecting rod are respectively rotatably connected to the middle of the second movable plate and the upper part of the fixed plate.

[0011] Preferably, the carton folding mechanism is located in the carton storage area on the machine body. The carton folding mechanism includes a third movable plate and a second telescopic cylinder. The third movable plate is vertically movable on one side of the carton storage area. The edge of the third movable plate is rotatably connected to the machine body. The tail of the second telescopic cylinder is rotatably connected to the machine body. The piston rod of the second telescopic cylinder is rotatably connected to the middle of the third movable plate, which is used to drive the third movable plate to flip horizontally towards the side wall of the carton storage area to fold the empty carton.

[0012] Preferably, the carton folding mechanism further includes a push plate and a second horizontal drive assembly. The push plate is vertically disposed in the carton storage area near the third movable plate, and the second horizontal drive assembly is horizontally installed perpendicular to the push plate. The push plate is connected to the actuating end of the second horizontal drive assembly. A third negative pressure suction nozzle connected to an external negative pressure source is correspondingly installed on the movable plate and the push plate. The third negative pressure suction nozzle is used to adsorb and fix the empty carton.

[0013] Preferably, the material gripping suction cup is a sponge suction cup.

[0014] The beneficial effects of this invention are as follows: 1. In this invention, a cardboard box containing materials is placed on a first conveyor with the sealed opening of the tape positioned in the front-to-back direction. When the first conveyor feeds the material, two clamping conveyor belts on the left and right sides clamp the cardboard box and transport it forward. The tape at the sealed opening on the upper and lower surfaces of the cardboard box is cut open by two cutters, thereby achieving a rapid cutting operation of the tape.

[0015] 2. When the two first lid openers of this invention are activated, the rotation of the lead screw drives the two movable plates sleeved on the positive and negative threads to move synchronously closer to the feed port. Then, the first telescopic cylinder extends, and through the second connecting rod, it drives the rotating shaft, the first connecting rod, and the first movable plate to flip. This causes the first negative pressure suction nozzles on the two first movable plates to suck up the two left and right folded edges of the carton under negative pressure. The first telescopic cylinder is then driven to retract, causing the rotating shaft, the first connecting rod, and the first movable plate to reset in the opposite direction, thus opening the left and right folded edges of the carton and realizing the rapid opening operation of the carton.

[0016] 3. When the two second lid openers of this invention are activated, the horizontal telescopic cylinder extends, causing the vertical telescopic cylinder, the fixed plate, and the second movable plate to approach the front and rear side walls of the carton. Then, the vertical telescopic cylinder is driven to extend upward. Under the pulling action of the third connecting rod, the second movable plate will flip towards the carton side, so that the two second negative pressure suction nozzles will suck up the two front and rear folded edges of the lower layer at the top opening of the carton under negative pressure. By utilizing the contraction of the vertical telescopic cylinder, the second movable plate, the third connecting rod, and the second negative pressure suction nozzles will be driven to flip and reset in the opposite direction, thereby flipping and opening the two front and rear folded edges, thus realizing the quick opening operation of the carton.

[0017] 4. After the lid of the carton is opened, the opening mechanism of this invention uses a synchronous belt gantry to drive the action of the material-grabbing suction cups, which can remove the material from the carton layer by layer and place it on the unloading mechanism on one side of the machine body, from which it is sent to the next process. Once all the material in the carton has been removed, the material-grabbing suction cups again extend into the carton, gripping the bottom surface and sending the carton to the folding mechanism. This device utilizes the action of the feeding mechanism to achieve rapid transport of materials and empty cartons, significantly improving material transfer efficiency.

[0018] 5. During operation of the carton folding mechanism of the present invention, the gripping suction cup on the synchronous belt truss holds the bottom of the empty carton and places it between the third movable plate and the push plate at a certain height from the bottom of the carton storage area. The carton is then held in place by the third negative pressure suction nozzle on the movable plate and the push plate. Afterwards, the gripping suction cup on the synchronous belt truss continues to move downwards, pushing open the four folded edges at the bottom of the carton before the gripping suction cup returns to its original position. Then, the second telescopic cylinder extends, causing the third movable plate to flip towards the push plate side, thereby squeezing the carton into a sheet shape. After the second telescopic cylinder drives the third movable plate to return to its original position in the opposite direction, the second horizontal drive component drives the push plate to move towards the lower material station side, thereby pushing the sheet-shaped carton to the unloading station for stacking and storage, facilitating the subsequent centralized recycling of empty cartons. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the feeding mechanism of the present invention; Figure 3 This is a schematic diagram of the tape-opening mechanism of the present invention; Figure 4 This is a schematic diagram of the opening mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the first lid opener of the present invention; Figure 6 This is a schematic diagram of the structure of the second lid opener of the present invention; Figure 7 This is a schematic diagram of the feeding mechanism of the present invention; Figure 8 This is a schematic diagram of the carton folding mechanism of the present invention; Figure 9 This is a schematic diagram of the carton folding mechanism of the present invention; Figure 10 This is a schematic diagram of the installation of the third movable plate and the second telescopic cylinder of the present invention. Detailed Implementation

[0020] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention.

[0021] like Figure 1-3As shown, this invention proposes a carton opening machine, including a machine body 1. The machine body 1 is equipped with a feeding mechanism 2, a tape-cutting mechanism, a lid-opening mechanism 3, a feeding mechanism, a unloading mechanism 6, and a carton folding mechanism 5. The tape-cutting mechanism is mounted on the feeding mechanism 2 and is used to cut the tape at the top and bottom sealing openings of the carton conveyed by the feeding mechanism 2. Specifically, the feeding mechanism 2 includes a first conveyor, which can be a roller conveyor. The tape-cutting mechanism includes two clamping conveyor belts 22 and two cutters 23. The two clamping conveyor belts 22 are horizontally and symmetrically mounted on both sides of the first conveyor. When a carton filled with material is conveyed on the first conveyor, the clamping conveyor belts 22 on both sides can clamp the sides of the carton and convey it forward, providing sufficient power for the tape-cutting. The two cutters 23 are vertically and symmetrically fixed on the first conveyor and correspond to the tape at the top and bottom sealing openings of the carton. Specifically, the upper cutter 23 is fixed to the middle of the roller conveyor by a gantry frame, and the lower cutter 23 is fixed in the middle of the roller conveyor.

[0022] The cardboard box containing the material is placed on the first conveyor 21 with the tape-sealed opening facing forward and backward. When the first conveyor 21 feeds the material, the two clamping conveyor belts 22 on the left and right sides clamp the cardboard box and transport it forward. The tape at the sealing opening on the upper and lower surfaces of the cardboard box will be cut by the two upper and lower cutters 23, thereby realizing the rapid cutting operation of the tape.

[0023] The feeding mechanism 2 is connected to the lid opening mechanism 3, which is used to open the lid of the top of the carton. Figure 4 As shown, the cover opening mechanism 3 includes a second conveyor, a lifting drive mechanism 32, and a cover opening assembly. The platform 11 of the machine body 1 has a material inlet 110. The second conveyor is vertically movable below the material inlet 110 and is horizontally connected to the tail of the first conveyor. The second conveyor can also be a roller conveyor structure. The second conveyor is mounted on the lifting part of the lifting drive mechanism 32. The lifting drive mechanism 32 can adopt a structure where a motor drives a chain for vertical transmission, as is common in the prior art. The second conveyor is mounted on a vertical slide rail and then fixed to the chain. The vertical movement of the second conveyor 31 is achieved through the movement of the chain.

[0024] The opening of a cardboard box is generally a four-sided folded structure. The front and back edges are folded towards the middle, and then the left and right edges are folded again to achieve a sealed opening. The left and right edges are on the upper layer, and the front and back edges are on the lower layer. The opening assembly of this device is installed at the upper feed port 110. The opening assembly includes two first opening devices 33 and two second opening devices 34. The two first opening devices 33 are symmetrically arranged on the left and right sides of the feed port 110, used to open the two upper folded flaps of the cardboard box. The two second opening devices 34 are symmetrically arranged on the front and back sides of the feed port 110, used to open the two lower folded flaps of the cardboard box.

[0025] Specifically, such as Figure 5 As shown, the first lid opener 33 includes a movable plate 331, a first telescopic cylinder 337, a first movable plate 332, and a first negative pressure suction nozzle 333. The movable plate 331 is horizontally slidably mounted on the table 11. The table 11 is provided with a first horizontal drive assembly that drives the movable plate 331 to move horizontally. The first horizontal drive assembly includes a lead screw 35 driven by a motor. The lead screw 35 is horizontally mounted on the table 11. The movable plates 331 of the two first lid openers 33 are respectively threaded onto the positive and negative threads on both sides of the lead screw 35. The first negative pressure suction nozzle 333 is mounted on the first movable plate 332 and connected to an external negative pressure source. One end of the first connecting rod 334 is vertically fixed to the lower front and rear sides of the first movable plate 332. The other end of the first connecting rod 334 is vertically fixed to a rotating shaft 335, which is horizontally rotatably mounted on the movable plate 331. One end of the second connecting rod 336 is also vertically fixed to one of the rotating shafts 335. The other end of the second connecting rod 336 is rotatably connected to the piston rod of the first telescopic cylinder 337. The tail of the first telescopic cylinder 337 is rotatably connected to the movable plate 331. The first telescopic cylinder 337 adopts a cylinder structure.

[0026] When the two first lid openers 33 on the left and right are activated, the screw 35 rotates, driving the two moving plates 331 on the positive and negative threads to move synchronously closer to the feed port 110. Then, the first telescopic cylinder 337 extends, driving the rotating shaft 335, the first connecting rod 334, and the first movable plate 332 to flip through the second connecting rod 336. This causes the first negative pressure suction nozzles 333 on the two first movable plates 332 to suck up the left and right folded edges of the carton under negative pressure. The first telescopic cylinder 337 is then driven to retract, causing the rotating shaft 335, the first connecting rod 334, and the first movable plate 332 to reset in the opposite direction, thus opening the left and right folded edges of the carton and achieving a quick lid opening operation.

[0027] like Figure 6 As shown, the second cover opener 34 includes a horizontal telescopic cylinder 341, a vertical telescopic cylinder 343, a fixed plate 342, a second movable plate 344, a third connecting rod 345, and a second negative pressure suction nozzle 346. The horizontal telescopic cylinder 341 is horizontally installed at the feed inlet 110. The fixed plate 342 is fixedly connected to the piston rod of the horizontal telescopic cylinder 341. The vertical telescopic cylinder 343 is vertically installed on the fixed plate 342. The second negative pressure suction nozzle 346, which is connected to an external negative pressure source, is installed on the second movable plate 344. The lower part of the second movable plate 344 is rotatably connected to the piston rod of the vertical telescopic cylinder 343. The two ends of the third connecting rod 345 are respectively rotatably connected to the middle of the second movable plate 344 and the upper part of the fixed plate 342. Both the horizontal telescopic cylinder 341 and the vertical telescopic cylinder 343 adopt a cylinder structure.

[0028] When the two second lid openers 34 are activated, the horizontal telescopic cylinder 341 extends, causing the vertical telescopic cylinder 343, the fixed plate 342, and the second movable plate 344 to approach the front and rear side walls of the carton. Then, the vertical telescopic cylinder 343 is driven to extend upward. Under the pulling action of the third connecting rod 345, the second movable plate 344 will flip towards the side of the carton, so that the two second negative pressure suction nozzles 346 will suck up the two front and rear folded edges of the lower layer at the top opening of the carton under negative pressure. By retracting the vertical telescopic cylinder 343, the second movable plate 344, the third connecting rod 345, and the second negative pressure suction nozzles 346 will be reversed and reset, thus flipping and opening the two front and rear folded edges, thereby realizing the quick opening operation of the carton.

[0029] like Figure 7 As shown, the feeding mechanism is installed above the machine body 1 and is used to remove the material from the carton and send it to the unloading mechanism 6, and to send the empty carton after removing the material to the carton folding mechanism 5. Specifically, the feeding mechanism includes a synchronous belt gantry 4 and a gripping suction cup 41. The synchronous belt gantry 4 is installed above the machine body 1, and the gripping suction cup 41 is installed at the bottom of the robot arm below the synchronous belt gantry 4.

[0030] The synchronous belt truss 4 can move horizontally on the body 1 along the X and Y axes, and its movement along the z axis enables the robot to lift vertically. Its structural principle is existing technology and will not be elaborated here. The material gripping suction cup 41 can adopt the existing sponge suction cup structure, enabling stable material gripping.

[0031] After the opening mechanism 3 opens the top of the carton, the synchronous belt gantry 4 drives the material-grabbing suction cup 41 to remove the material layer by layer from the carton and place it on the unloading mechanism 6 (which can be a chain conveyor belt structure) on one side of the machine body 1. The unloading mechanism 6 then sends the material to the next process. After all the material in the carton has been removed, the material-grabbing suction cup 41 extends into the carton and grips the bottom surface of the carton to send it to the carton folding mechanism 5. This device utilizes the action of the feeding mechanism to achieve rapid transport of materials and empty cartons, significantly improving material transfer efficiency.

[0032] like Figure 8-10As shown, the carton folding mechanism 5 is used to fold and store empty cartons. The carton folding mechanism 5 is located in the carton storage area on the machine body 1. The carton folding mechanism 5 includes a third movable plate 51, a second telescopic cylinder 56, a push plate 52, and a second horizontal drive assembly 53. When not in operation, the third movable plate 51 and the push plate 52 are vertically movable on one side of the carton storage area. The edge of the third movable plate 51 is rotatably connected to the machine body 1, and the tail of the second telescopic cylinder 56 is rotatably connected to the machine body 1. The piston rod of the second telescopic cylinder 56 is rotatably connected to the middle of the third movable plate 51, driving the third movable plate 51 to flip horizontally towards the push plate 52. The second horizontal drive assembly 53 is horizontally installed perpendicular to the push plate 52, and the push plate 52 is connected to the actuating end of the second horizontal drive assembly 53. A feeding station is provided on the side of the carton storage area 12 away from the third movable plate 51 for removing stacked empty carton pieces.

[0033] A third negative pressure suction nozzle 55, connected to an external negative pressure source, is installed on the movable plate and push plate 52 respectively. The second telescopic cylinder 56 can be a cylinder structure, and the second horizontal drive assembly 53 can adopt the same structure as the above-mentioned lifting drive mechanism 32, that is, a motor-driven chain transmission structure, to drive the push plate 52 to move horizontally. A limiting plate 54 is also horizontally provided on the machine body 1 above the carton storage area to limit the movement of the carton sheet when the push plate 52 pushes it.

[0034] When the carton folding mechanism 5 is in operation, the gripping suction cup 41 on the synchronous belt truss 4 picks up the bottom of the empty carton and places it between the third movable plate 51 and the push plate 52 at a certain height from the bottom of the carton storage area. The carton is held in place by the third negative pressure suction nozzle 55 on the movable plate and the push plate 52. Then, the gripping suction cup 41 on the synchronous belt truss 4 continues to move downward, pushing open the four folded edges at the bottom of the carton before returning to its original position. Then, the second telescopic cylinder 56 extends, causing the third movable plate 51 to flip towards the push plate 52, thereby squeezing the carton into a sheet shape. After the second telescopic cylinder 56 drives the third movable plate 51 to return to its original position in the opposite direction, the second horizontal drive component 53 drives the push plate 52 to move towards the material unloading station, thereby pushing the sheet-shaped carton to the unloading station for stacking and storage, which facilitates the centralized recycling of empty cartons later.

[0035] In use, the cardboard boxes containing materials are placed on the first conveyor for transport. Under the clamping conveyor belt 22, the tape at the top and bottom sealing openings of the cardboard boxes is cut open by the cutter 23. The cardboard boxes are then transported to the second conveyor 31, and the lifting drive mechanism 32 lifts the cardboard boxes on the second conveyor 31 to the material inlet 110. The drive screw 35 rotates, causing the two first lid openers 33 to move close to the left and right sides of the cardboard boxes and open the left and right folded edges of the top opening of the cardboard boxes. Then, the two second lid openers 34 move and open the front and back folded edges of the cardboard boxes. The synchronous belt truss 4 drives the action of the material gripping suction cup 41 to remove the materials from the cardboard boxes layer by layer and place them for feeding. On mechanism 6; after all the material in the carton is removed, the gripping suction cup 41 grips the bottom of the carton and places it between the third movable plate 51 and the push plate 52, and is fixed by the third negative pressure suction nozzle 55. Then, the gripping suction cup 41 on the synchronous belt truss 4 continues to move downward to pry open and reset the four folded edges at the bottom of the carton; the second telescopic cylinder 56 drives the third movable plate 51 to flip, squeezing the carton into a sheet shape. After that, the second telescopic cylinder 56 drives the third movable plate 51 to reset; the second horizontal drive assembly 53 drives the push plate 52 to move to the lower material station side, pushing the sheet-shaped carton to the unloading station for stacking and storage, which is convenient for the subsequent centralized recycling of empty cartons.

[0036] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A carton opening machine, comprising a machine body, characterized in that: The machine body is equipped with a feeding mechanism, a tape-cutting mechanism, a lid-opening mechanism, a feeding mechanism, a unloading mechanism, and a carton folding mechanism. The tape-cutting mechanism is installed on the feeding mechanism and cuts the tape at the top and bottom sealing openings of the carton conveyed by the feeding mechanism. The feeding mechanism is connected to the lid opening mechanism, which is used to open the lid of the carton. The feeding mechanism is installed above the machine body and is used to take out the material in the carton and send it to the unloading mechanism, and send the empty carton after taking out the material to the carton folding mechanism. The feeding mechanism includes a synchronous belt truss and a gripping suction cup. The synchronous belt truss is installed above the machine body, and the gripping suction cup is installed on the robotic arm below the synchronous belt truss. The carton folding mechanism is used to fold and store the empty carton. The feeding mechanism includes a first conveyor; the opening mechanism includes a second conveyor, a lifting drive mechanism, and an opening assembly. The platform of the machine body has a material inlet. The second conveyor is vertically movable below the material inlet. The second conveyor is horizontally connected to the tail of the first conveyor. The second conveyor is installed on the lifting part of the lifting drive mechanism. The opening assembly is installed at the upper material inlet. The lid opening assembly includes two first lid openers and two second lid openers. The two first lid openers are symmetrically arranged on the left and right sides of the material inlet and are used to open the two upper folding lids of the carton. The two second lid openers are symmetrically arranged on the front and rear sides of the material inlet and are used to open the two lower folding lids of the carton. The carton folding mechanism is located in the carton storage area on the machine body. The carton folding mechanism includes a third movable plate and a second telescopic cylinder. The third movable plate is vertically movable on one side of the carton storage area. The edge of the third movable plate is rotatably connected to the machine body. The tail of the second telescopic cylinder is rotatably connected to the machine body. The piston rod of the second telescopic cylinder is rotatably connected to the middle of the third movable plate, which is used to drive the third movable plate to flip horizontally towards the side wall of the carton storage area to fold the empty carton. The carton folding mechanism also includes a push plate and a second horizontal drive assembly. The push plate is vertically installed in the carton storage area near the third movable plate. The second horizontal drive assembly is horizontally installed perpendicular to the push plate. The push plate is connected to the moving end of the second horizontal drive assembly. The movable plate and the push plate are respectively installed with a third negative pressure suction nozzle connected to an external negative pressure source. The third negative pressure suction nozzle is used to adsorb and fix the empty carton. The synchronous belt truss drives the material-grabbing suction cups to remove materials from the carton layer by layer and place them on the unloading mechanism. After all the materials in the carton have been removed, the material-grabbing suction cups hold the carton between the third movable plate and the push plate, and are fixed by the third negative pressure suction nozzle. Then, the material-grabbing suction cups on the synchronous belt truss continue to move downward, pushing open the four folds at the bottom of the carton before returning to their original position. The second telescopic cylinder drives the third movable plate to flip, squeezing the carton into a sheet shape. The second telescopic cylinder then drives the third movable plate to return to its original position. The second horizontal drive assembly drives the push plate to move towards the unloading station, pushing the sheet-shaped carton to the unloading station for stacking and storage.

2. The carton opening machine according to claim 1, characterized in that: The tape-opening mechanism includes two clamping conveyor belts and two cutters. The two clamping conveyor belts are horizontally and symmetrically installed on both sides of the first feeder, and the two cutters are vertically and symmetrically fixed on the first feeder and correspond to the tape at the top and bottom sealing openings of the carton.

3. The carton opening machine according to claim 1, characterized in that: The first lid opener includes a movable plate, a first telescopic cylinder, a first movable plate, and a first negative pressure suction nozzle. The movable plate is horizontally slidably mounted on a table surface, and a first horizontal drive assembly is provided on the table surface to drive the movable plate to move horizontally. The first negative pressure suction nozzle is mounted on the first movable plate and connected to an external negative pressure source. One end of a first connecting rod is vertically fixed to the lower front and rear sides of the first movable plate, and the other end of the first connecting rod is vertically fixed to a rotating shaft, which is horizontally rotatably mounted on the movable plate. One end of a second connecting rod is also vertically fixed to one of the rotating shafts, and the other end of the second connecting rod is rotatably connected to the piston rod of the first telescopic cylinder. The tail of the first telescopic cylinder is rotatably connected to the movable plate.

4. The carton opening machine according to claim 3, characterized in that: The first horizontal drive assembly includes a lead screw driven by a motor, which is horizontally mounted on the table. The moving plates of the two first cover openers are respectively threaded onto the positive and negative threads on both sides of the lead screw.

5. The carton opening machine according to claim 1, characterized in that: The second cover opener includes a horizontal telescopic cylinder, a vertical telescopic cylinder, a fixed plate, a second movable plate, a third connecting rod, and a second negative pressure suction nozzle. The horizontal telescopic cylinder is horizontally installed at the feed inlet, and the fixed plate is fixedly connected to the piston rod of the horizontal telescopic cylinder. The vertical telescopic cylinder is vertically installed on the fixed plate. The second negative pressure suction nozzle, which is connected to an external negative pressure source, is installed on the second movable plate. The lower part of the second movable plate is rotatably connected to the piston rod of the vertical telescopic cylinder. The two ends of the third connecting rod are respectively rotatably connected to the middle of the second movable plate and the top of the fixed plate.

6. The carton opening machine according to claim 1, characterized in that: The material gripping suction cup is a sponge suction cup.

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