A carton unsealing mechanism and unsealing method

Abstract

This invention discloses a carton unsealing mechanism and method, comprising a frame, a carton conveyor line for conveying the carton, a centering mechanism disposed within the frame for positioning the carton, a lifting and cutting mechanism disposed within the frame for removing the tape on the top of the carton, and side cutting devices symmetrically disposed on both sides of the frame for removing the tape on the sides of the carton. The carton conveyor line conveys the carton to be unsealed into the frame, the centering mechanism positions the frame, then the lifting and cutting mechanism cuts the tape on the top of the carton, and the side cutting devices cut the tape on both sides of the carton, thereby achieving rapid and automatic unsealing of the carton.

Description

Technical Field

[0001] This invention relates to the field of logistics, specifically to a carton unsealing mechanism and method. Background Technology

[0002] Boxed goods require unpacking and inspection upon acceptance. High-value items: If the contents are valuable, such as precision instruments or expensive electronic equipment, a detailed inspection must be conducted after unpacking to ensure they have not been damaged or replaced during transport. Products with strict quality requirements: For goods with extremely high quality standards, such as food, medicine, and medical devices, it is impossible to determine their quality from the outer packaging alone. Large quantities with opaque packaging: When there are many items and the packaging is opaque, making it impossible to accurately determine the quantity and condition from the outside, the boxes need to be unpacked for counting and inspection. Risk of transport damage: If the goods have undergone long-distance transport, multiple loading and unloading operations, or harsh transport conditions, there is a high possibility of damage, and the boxes must be unpacked for inspection upon acceptance.

[0003] Traditional manual disassembly of cardboard boxes suffers from drawbacks such as low efficiency, high labor intensity, and poor safety. To meet current development needs, a cardboard box unpacking mechanism has been designed to achieve rapid and automated disassembly of cardboard boxes. Summary of the Invention

[0004] The purpose of this invention is to solve the above problems and provide a carton unpacking mechanism and method that can realize automatic and rapid unpacking of carton.

[0005] The technical solution adopted by this invention to solve its technical problem is: A carton unsealing mechanism includes a frame, a carton conveyor line for conveying cartons, a centering mechanism disposed within the frame for positioning the carton, a lifting and cutting mechanism disposed within the frame for unsealing the tape on the top of the carton, and side cutting devices symmetrically disposed on both sides of the frame for unsealing the tape on the sides of the carton. The side-cutting device includes lifting beams symmetrically arranged on both sides of the frame and raised and lowered within the frame, a movable frame arranged on the lifting beam and moving back and forth on the lifting beam, a pressure plate and a buffer plate arranged on the movable frame and raised and lowered on the movable frame, and a slider that moves on the buffer plate at the bottom, and a first cutter for cutting the tape on the slider. The slider is provided with a first guide rod, and the first guide rod is provided with a sliding sleeve that moves on the first guide rod. The rotating shaft of the first cutter passes through the end of the sliding sleeve and is rotatably connected to the sliding sleeve. The lower end of the buffer plate is provided with a guide groove, the guide groove including a straight part and outwardly curved arc parts provided at both ends of the straight part. The upper end of the sliding sleeve is provided with a third guide rod that cooperates with the guide groove.

[0006] Furthermore, the bottom of the frame is provided with a first lead screw and support rods symmetrically arranged within the frame. The lower end of the support rod is provided with a sleeve that is threadedly connected to the first lead screw. The lower end of the support rod is rotatably connected to the sleeve, and the upper end of the support rod is rotatably connected to the corresponding end of the lifting beam.

[0007] Furthermore, the buffer plate is provided with a groove, and the pressure plate is disposed in the groove.

[0008] Furthermore, the pressure plate is provided with a second guide rod passing through the buffer plate and the movable frame. The second guide rod is provided with a compression spring. The lower end of the compression spring contacts the buffer plate, and the upper end of the compression spring contacts the movable frame. The movable frame is provided with a first hydraulic cylinder that drives the pressure plate to rise and fall.

[0009] Furthermore, the lifting beam is equipped with a second hydraulic cylinder that drives the moving frame to move back and forth.

[0010] Furthermore, the lower end of the buffer plate is provided with a second lead screw that drives the slider to move and a drive shaft that drives the second lead screw to rotate. When the drive shaft rotates, the first cutter rotates synchronously under the action of the connecting mechanism.

[0011] Furthermore, the connecting mechanism includes a first connecting rod, a second connecting rod, a first belt, and a second belt. The first connecting rod and the second connecting rod are hinged together, and a rotatable pin is provided at the hinge point. The end of the first connecting rod away from the second connecting rod is rotatably connected to the drive shaft, and the end of the second connecting rod away from the first connecting rod is rotatably connected to the rotating shaft of the first cutter. The drive shaft is connected to the rotating shaft of the first cutter through the first belt and the second belt.

[0012] Furthermore, the centering mechanism includes a base installed at the bottom of the frame, first movable plates symmetrically arranged on the base, and second movable plates symmetrically arranged front and back. Both the first and second movable plates are provided with clamping plates. The base is provided with a bidirectional cylinder for driving the two first movable plates to move, and a cylinder for driving the second movable plate on one side to move.

[0013] Furthermore, the base is provided with a rotating rod, and the two ends of the rotating rod are respectively connected to the corresponding second moving plate through connecting rods.

[0014] Furthermore, the lifting and cutting mechanism includes a lifting frame disposed on the upper end of the frame and lifting and lowering on the frame, a crossbeam disposed on the lower end of the lifting frame, a second cutter disposed on the crossbeam and moving on the crossbeam, and a suction cup disposed on the crossbeam.

[0015] Furthermore, the carton conveying line includes a support frame and several conveying rollers disposed on the support frame, through which the carton is conveyed.

[0016] A method for unpacking a cardboard box, utilizing the aforementioned unpacking mechanism, includes the following steps: S101 transports the carton to the cutting station via the conveyor line. The detection switch on the centering mechanism determines the width and length of the carton and centers and clamps it. After S102 is aligned, the height of the carton is determined by the detection switch of the lifting and cutting mechanism. The lifting and cutting mechanism descends to the cutting position, the suction cups hold the two sides of the carton, and the cutting mechanism cuts the gap in the carton. After the S103 is cut, the suction cup is released, and the lifting and cutting mechanism rises. The height measurement signal of the S104 lifting and cutting mechanism is fed back to the side cutting device. The first lead screw rotates, and under the action of the support rod, the lifting beam is positioned to the side cutting position. The second hydraulic cylinder extends, the buffer plate presses down on the carton, and the top cover of the carton is fixed. The first cutter moves to complete the cutting process. After the S105 is cut, the carton is released, the second hydraulic cylinder is retracted, the side cutting device returns to its original position, the centering mechanism is released, the carton is conveyed out of the line, and the automatic unsealing process is completed.

[0017] The beneficial effects of this invention are: 1. The present invention includes a frame, a carton conveyor line for conveying cartons, a centering mechanism disposed within the frame for positioning the carton, a lifting and cutting mechanism disposed within the frame for removing the tape on the top of the carton, and side cutting devices symmetrically disposed on both sides of the frame for removing the tape on the sides of the carton; the carton conveyor line conveys the carton to be unsealed into the frame, the centering mechanism positions the frame, then the lifting and cutting mechanism cuts the tape on the top of the carton, and the side cutting devices cut the tape on both sides of the carton, thereby realizing the rapid and automatic unsealing of the carton.

[0018] 2. The side-cutting device in this invention includes lifting beams symmetrically arranged on both sides of the frame and moving up and down within the frame; a movable frame arranged on the lifting beams and moving back and forth on the lifting beams; a pressure plate and a buffer plate arranged on the movable frame and moving up and down on the movable frame. A slider that moves on the buffer plate is located at the bottom of the buffer plate, and a first cutter for cutting the tape is provided on the slider. After the carton is positioned and the tape at the top of the carton is cut, the lifting beams rise to the required position for the cutter, the movable frame moves towards the carton, the pressure plate presses down on the side of the carton, and the first cutter rotates and cuts the tape on the side of the carton as the slider moves. By setting up the buffer plate, it prevents the first cutter from failing to align with the gap between the carton and the cover plate when the pressure plate causes the carton to deform. When the pressure plate causes the carton to deform, the buffer plate moves into place on the top of the carton, ensuring that the first cutter aligns with the gap between the carton and the cover plate. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the front view of the present invention; Figure 2 This is the left view of the present invention; Figure 3 This is a top view of the centering mechanism of the present invention; Figure 4 This is a front view of the lifting and cutting mechanism of the present invention; Figure 5 This is a left view of the lifting and cutting mechanism of the present invention; Figure 6 This is a front view of the lifting beam lifting drive of the present invention; Figure 7 This is a schematic diagram of the side-cutting device of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the side-cutting device of the present invention. Figure 2 ; Figure 9 for Figure 8 Enlarged view of a portion of point A in the middle; Figure 10 This is a rear view of the side-cutting device of the present invention; Figure 11 for Figure 10 Enlarged view of section B in the middle.

[0021] In the diagram: Frame 1, Lifting Beam 2, Moving Frame 3, Pressure Plate 4, Buffer Plate 5, Slider 6, First Cutter 7, First Guide Rod 8, Sliding Sleeve 9, Guide Groove 10, Third Guide Rod 11, First Lead Screw 12, Support Rod 13, Sleeve 14, Second Guide Rod 15, Compression Spring 16, First Hydraulic Cylinder 17, Second Hydraulic Cylinder 18, Second Lead Screw 19, Drive Shaft 20, First Connecting Rod 21, Second Connecting Rod 22, First Belt 23, Second Belt 24, Base 25, First Moving Plate 26, Second Moving Plate 27, Clamping Plate 28, Two-Way Cylinder 29, Cylinder 30, Rotating Rod 31, Connecting Rod 32, Lifting Frame 33, Crossbeam 34, Second Cutter 35, Suction Cup 36. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0023] like Figure 1 and Figure 2 As shown, a carton unsealing mechanism includes a frame 1, a carton conveyor line for conveying cartons, a centering mechanism disposed within the frame 1 for positioning the carton, a lifting and cutting mechanism disposed within the frame 1 for unsealing the tape on the top of the carton, and side cutting devices symmetrically disposed on both sides of the frame 1 for unsealing the tape on the sides of the carton. The carton conveyor line conveys the carton to be unsealed into the frame, the centering mechanism positions the frame, then the lifting and cutting mechanism cuts the tape on the top of the carton, and the side cutting devices cut the tape on both sides of the carton, thereby achieving rapid and automatic unsealing of the carton.

[0024] The carton conveyor line includes a support frame and several conveyor rollers mounted on the support frame. The carton is conveyed by the conveyor rollers. This is existing technology and will not be described in detail here.

[0025] like Figure 7 , Figure 8 and Figure 9 As shown, the side-cutting device includes lifting beams 2 symmetrically arranged on both sides of the frame 1 and moving up and down within the frame 1; a movable frame 3 arranged on the lifting beams 2 and moving back and forth on the lifting beams 2; a pressure plate 4 arranged on the movable frame 3 and moving up and down on the movable frame 3; and a buffer plate 5. The bottom of the buffer plate 5 is provided with a slider 6 that moves on the buffer plate 5. The slider is equipped with a first cutter 7 for cutting the tape. After the carton is positioned and the tape at the top of the carton is cut, the lifting beams 2 rise to the required position for the cutter, the movable frame 3 moves towards the carton, the pressure plate 4 presses down on the side of the carton, and the first cutter 7 rotates and cuts the tape on the side of the carton as the slider 6 moves. By setting the buffer plate 5, it prevents the first cutter from failing to align with the gap between the carton and the cover plate when the pressure plate 4 presses down and causes the carton to deform. When the pressure plate 4 presses down and causes the carton to deform, the buffer plate 5 moves into place on the top of the carton, ensuring that the first cutter 7 aligns with the gap between the carton and the cover plate.

[0026] like Figure 8 and Figure 9As shown, the slider 6 is provided with a first guide rod 8, and a sliding sleeve 9 that moves on the first guide rod 8 is provided on the first guide rod 8. The rotating shaft of the first cutter 7 passes through the end of the sliding sleeve 9 and is rotatably connected to the sliding sleeve 9. The lower end of the buffer plate 5 is provided with a guide groove 10, which includes a straight part and outwardly curved arc-shaped parts at both ends of the straight part. The upper end of the sliding sleeve 9 is provided with a third guide rod 11 that cooperates with the guide groove 10. When the slider 6 moves, under the action of the guide groove 10 and the third guide rod 11, the sliding sleeve 9 moves on the first guide rod 8, thereby ensuring that the first cutter can cut the tape.

[0027] like Figure 1 and Figure 6 As shown, the bottom of the frame 1 is provided with a first lead screw 12 and support rods 13 symmetrically arranged within the frame 1. The bottom of the frame 1 is provided with a motor that drives the first lead screw 12 to rotate. The lower end of the support rod 13 is provided with a sleeve 14 threadedly connected to the first lead screw 12. The lower end of the support rod 13 is rotatably connected to the sleeve 14. The upper end of the support rod 13 is rotatably connected to the corresponding end of the lifting beam 2. Both ends of the lifting beam 2 are provided with connecting plates. The upper end of the support rod 13 is rotatably connected to the connecting plates. The lifting beam 2 and the frame 1 are connected by a guide rail slider. The first lead screw 12 is provided with reverse threads on both sides. When the first lead screw 12 rotates, it drives the sleeves 14 on both sides to move in the opposite direction. Under the action of the support rods 13 on both sides, the lifting beam 2 is raised and lowered smoothly.

[0028] like Figure 10 and Figure 11 As shown, the buffer plate 5 has a groove, and the pressure plate 4 is disposed in the groove.

[0029] like Figure 11 As shown, the pressure plate 4 is provided with a second guide rod 15 that passes through the buffer plate 5 and the movable frame 3. The second guide rod 15 is provided with a compression spring 16. The lower end of the compression spring 16 contacts the buffer plate 5, and the upper end of the compression spring 16 contacts the movable frame 3. The movable frame 3 is provided with a first hydraulic cylinder 17 that drives the pressure plate 4 to rise and fall. The cylinder body end of the first hydraulic cylinder 17 is connected to the movable frame 3, and the piston rod end of the first hydraulic cylinder 17 is connected to the buffer plate 5.

[0030] like Figure 7 As shown, the lifting beam 2 is equipped with a second hydraulic cylinder 18 that drives the moving frame 3 to move back and forth.

[0031] like Figure 10As shown, the lower end of the buffer plate 5 is provided with a second lead screw 19 for driving the slider 6 to move and a drive shaft 20 for driving the second lead screw 19 to rotate. The buffer plate 5 is provided with a guide rod for guiding the slider 6 to move. The lower end of the buffer plate 5 is provided with a motor for driving the drive shaft 20 to rotate. The upper end of the drive shaft 20 is connected to the second lead screw 19 through a bevel gear. When the drive shaft 20 rotates, the first cutter 7 rotates synchronously under the action of the connecting mechanism.

[0032] like Figure 8 and Figure 9 As shown, the connecting mechanism includes a first connecting rod 21, a second connecting rod 22, a first belt 23, and a second belt 24. The first connecting rod 21 and the second connecting rod 22 are hinged together, and a rotatable pin is provided at the hinge point. The end of the first connecting rod 21 away from the second connecting rod 22 is rotatably connected to the drive shaft 20, and the end of the second connecting rod 22 away from the first connecting rod 21 is rotatably connected to the rotating shaft of the first cutter 7. The drive shaft 20 is connected to the rotating shaft of the first cutter 7 through the first belt 23 and the second belt 24.

[0033] When slider 6 moves, the first cutter 7 rotates accordingly to cut the tape. The rotation of the first cutter 7 requires it to be connected to the drive shaft 20. The rotation of the drive shaft 20 drives the first cutter 7 to rotate to perform the cutting action. This can be achieved through a connecting mechanism.

[0034] In use, when the drive shaft 20 rotates, it drives the first belt 23 to move, and the first belt 23 drives the second belt 24 to move, which in turn causes the first cutter 7 to rotate. In this process, two coaxial pulleys are fixed on the shaft pin that is hinged to the first connecting rod 21 and the second connecting rod 22. One pulley is connected to the drive shaft 20 through the first belt 23, and the other pulley is connected to the rotating shaft of the first cutter 7 through the second belt 24.

[0035] like Figure 3 As shown, the centering mechanism includes a base 25 mounted at the bottom of the frame 1, first movable plates 26 symmetrically arranged on the base 25, and second movable plates 27 symmetrically arranged front and back. Both the first movable plates 26 and the second movable plates 27 are equipped with clamping plates 28. The base 25 is equipped with a bidirectional cylinder 29 for driving the two first movable plates 26 to move, and a cylinder 30 for driving one side of the second movable plate 27 to move. A support plate is provided on the base 25, and the second movable plate 27 is mounted on and moves on the support plate. A length measuring switch is provided on the clamping plate along the length of the carton, and a width measuring switch is provided on the clamping plate along the width of the carton.

[0036] The base 25 is provided with a rotating rod 31. The two ends of the rotating rod 31 are respectively connected to the corresponding second moving plate 27 through connecting rods 32. When the cylinder 30 drives the second moving plate 27 on one side to move, the second moving plate 27 on the other side moves synchronously in the same direction or in the opposite direction under the action of the rotating rod 31 and connecting rod 32.

[0037] like Figure 4 and Figure 5 As shown, the lifting and cutting mechanism includes a lifting frame 33 mounted on the upper end of the frame 1 and moving up and down on the frame 1, a crossbeam 34 mounted on the lower end of the lifting frame 33, and a second cutter 35 mounted on the crossbeam 34 and moving on the crossbeam 34. The frame 1 is provided with a guide sleeve that cooperates with the column of the lifting frame 33. A lead screw is provided inside the lifting frame 33. A sleeve threadedly connected to the lead screw is provided at the upper end of the frame 1. A motor driving the sleeve to rotate is provided on the frame 1. The motor is connected to the sleeve via a belt. When the sleeve rotates, the lifting frame 33 rises and falls under the action of the thread and the lead screw. A suction cup 36 is provided on the crossbeam 34. A distance sensor is provided at the upper end of the frame 1 to determine the lifting height of the lifting frame 33.

[0038] The carton conveyor line includes a support 37 and a number of conveying rollers arranged on the support 37, through which the carton is conveyed.

[0039] A method for unpacking a cardboard box, utilizing the aforementioned unpacking mechanism, includes the following steps: S101 transports the carton to the cutting station via the conveyor line. The detection switch on the centering mechanism determines the width and length of the carton and centers and clamps it. After S102 is aligned, the height of the carton is determined by the detection switch of the lifting and cutting mechanism. The lifting and cutting mechanism descends to the cutting position, the suction cups hold the two sides of the carton, and the cutting mechanism cuts the gap in the carton. After the S103 is cut, the suction cup is released, and the lifting and cutting mechanism rises. The height measurement signal of the S104 lifting and cutting mechanism is fed back to the side cutting device. The first lead screw 12 rotates, and under the action of the support rod 13, the lifting beam 2 is positioned at the side cutting position. The second hydraulic cylinder 18 extends, the buffer plate presses down on the carton, and the top cover of the carton is fixed. The first cutter 7 moves to complete the cutting process. After the S105 is cut, the carton is released, the second hydraulic cylinder is retracted, the side cutting device returns to its original position, the centering mechanism is released, the carton is conveyed out of the line, and the automatic unsealing process is completed.

[0040] In the description of the present invention, it should be noted that the terms "left", "right", "up", "down", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A carton unpacking mechanism, characterized in that, Includes a frame (1), a carton conveyor line for conveying cartons, a centering mechanism set in the frame (1) for positioning the carton, a lifting and cutting mechanism set in the frame (1) for removing the tape from the top of the carton, and side cutting devices symmetrically set on both sides of the frame (1) for removing the tape from the sides of the carton. The side-cutting device includes a lifting beam (2) symmetrically arranged on both sides of the frame (1) and raised and lowered within the frame (1), a moving frame (3) arranged on the lifting beam (2) and moving back and forth on the lifting beam (2), a pressure plate (4) arranged on the moving frame (3) and raised and lowered on the moving frame (3), and a buffer plate (5). The bottom of the buffer plate (5) is provided with a slider (6) that moves on the buffer plate (5), and the slider is provided with a first cutter (7) for cutting the tape. The slider (6) is provided with a first guide rod (8), and the first guide rod (8) is provided with a sliding sleeve (9) that moves on the first guide rod (8). The rotating shaft of the first cutter (7) passes through the end of the sliding sleeve (9) and is rotatably connected to the sliding sleeve (9). The lower end of the buffer plate (5) is provided with a guide groove (10). The guide groove (10) includes a straight part and an outwardly curved arc part provided at both ends of the straight part. The upper end of the sliding sleeve (9) is provided with a third guide rod (11) that cooperates with the guide groove (10).

2. The carton unsealing mechanism as described in claim 1, characterized in that, The bottom of the frame (1) is provided with a first lead screw (12) and a support rod (13) symmetrically arranged in the frame (1). The lower end of the support rod (13) is provided with a sleeve (14) threadedly connected to the first lead screw (12). The lower end of the support rod (13) is rotatably connected to the sleeve (14). The upper end of the support rod (13) is rotatably connected to the corresponding end of the lifting beam (2).

3. The carton unsealing mechanism as described in claim 1, characterized in that, The buffer plate (5) is provided with a groove, and the pressure plate (4) is disposed in the groove.

4. A carton unsealing mechanism as described in claim 3, characterized in that, The pressure plate (4) is provided with a second guide rod (15) that passes through the buffer plate (5) and the moving frame (3). The second guide rod (15) is provided with a compression spring (16). The lower end of the compression spring (16) contacts the buffer plate (5), and the upper end of the compression spring (16) contacts the moving frame (3). The moving frame (3) is provided with a first hydraulic cylinder (17) that drives the pressure plate (4) to rise and fall.

5. A carton unsealing mechanism as described in claim 1, characterized in that, The lifting beam (2) is equipped with a second hydraulic cylinder (18) that drives the moving frame (3) to move back and forth.

6. A carton unsealing mechanism as described in claim 1, characterized in that, The buffer plate (5) is provided with a second lead screw (19) for moving the slider (6) and a drive shaft (20) for rotating the second lead screw (19). When the drive shaft (20) rotates, the first cutter (7) rotates synchronously under the action of the connecting mechanism.

7. A carton unsealing mechanism as described in claim 6, characterized in that, The connecting mechanism includes a first connecting rod (21), a second connecting rod (22), a first belt (23), and a second belt (24). The first connecting rod (21) and the second connecting rod (22) are hinged together, and a rotatable pin is provided at the hinge point. The end of the first connecting rod (21) away from the second connecting rod (22) is rotatably connected to the drive shaft (20). The end of the second connecting rod (22) away from the first connecting rod (21) is rotatably connected to the shaft of the first cutter (7). The drive shaft (20) is connected to the shaft of the first cutter (7) through the first belt (23) and the second belt (24).

8. A carton unsealing mechanism as described in claim 1, characterized in that, The centering mechanism includes a base (25) installed at the bottom of the frame (1), a first movable plate (26) symmetrically arranged on the base (25) from left to right, and a second movable plate (27) symmetrically arranged from front to back. Both the first movable plate (26) and the second movable plate (27) are provided with clamping plates (28). The base (25) is provided with a bidirectional cylinder (29) for driving the two first movable plates (26) to move, and the base (25) is provided with a cylinder (30) for driving the second movable plate (27) on one side to move.

9. A carton unsealing mechanism as described in claim 8, characterized in that, The base (25) is provided with a rotating rod (31), and the two ends of the rotating rod (31) are respectively connected to the corresponding second moving plate (27) through a connecting rod (32).

10. A carton unsealing mechanism as described in claim 1, characterized in that, The lifting and cutting mechanism includes a lifting frame (33) that is set on the upper end of the frame (1) and moves up and down on the frame (1), a crossbeam (34) that is set on the lower end of the lifting frame (33), a second cutter (35) that is set on the crossbeam (34) and moves on the crossbeam (34), and a suction cup (36) is provided on the crossbeam (34).

11. A carton unsealing mechanism as described in claim 1, characterized in that, The carton conveyor line includes a support (37) and a number of conveyor rollers disposed on the support (37).

12. A method for unpacking a cardboard box, utilizing the unpacking mechanism according to any one of claims 1 to 11, characterized in that, Includes the following steps: S101 transports the carton to the cutting station via the conveyor line. The detection switch on the centering mechanism determines the width and length of the carton and centers and clamps it. After S102 is aligned, the height of the carton is determined by the detection switch of the lifting and cutting mechanism. The lifting and cutting mechanism descends to the cutting position, the suction cups hold the two sides of the carton, and the cutting mechanism cuts the gap in the carton. After the S103 is cut, the suction cup is released, and the lifting and cutting mechanism rises. The height measurement signal of the S104 lifting and cutting mechanism is fed back to the side cutting device. The first lead screw (12) rotates, and under the action of the support rod (13), the lifting beam (2) is positioned at the side cutting position. The second hydraulic cylinder (18) extends, the buffer plate presses down on the carton, and the top cover of the carton is fixed. The first cutter (7) moves to complete the cutting process. After the S105 is cut, the carton is released, the second hydraulic cylinder is retracted, the side cutting device returns to its original position, the centering mechanism is released, the carton is conveyed out of the line, and the automatic unsealing process is completed.

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