Carton sealing structure
By designing a carton sealing structure that uses robotic arms and tape roller components, the problem that traditional box sealing structure cannot adapt to robotic arms transformation is solved, and a more efficient, stable and flexible box sealing process is achieved, reducing production and maintenance costs.
Patent Information
- Application Number
- CN202510169414.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-03-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The traditional automatic packaging production line has low degree of automation and insufficient flexibility. After the robotic arm modification, the motor setting increases the production cost and the probability of damage, and reduces the stability of the equipment. The existing box sealing structure cannot be fully adapted to the robotic arm modification.
A carton sealing structure is designed, and the carton is driven by a mechanical arm to move and lift the carton horizontally. Combined with the cooperation of the front belt roller, the rear belt roller, the synchronization link and the return spring, the belt sealing box and the belt cutting are realized without the need for a motor to drive the belt cutting knife.
It improves the flexibility and stability of the production line, reduces production and maintenance costs, and achieves a more efficient box sealing process.
Smart Images
Figure CN119683112A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of packaging machinery and equipment, and in particular relates to a carton sealing structure. Background Art
[0002] The carton automatic packaging production line is an important equipment in the modern packaging industry. It integrates automation and intelligent technology, greatly improving packaging efficiency and accuracy. The production line usually consists of multiple links such as cardboard feeding, forming, pasting, unpacking, filling, sealing and labeling. Each link is seamlessly connected through advanced sensors and control systems. In the production process, after the cardboard is accurately cut and formed, it is automatically sent to the packaging station. The unpacking structure opens the formed carton, and the product is accurately placed in the carton. Then it is automatically sealed and labeled. The whole process does not require excessive human intervention, which greatly saves labor costs.
[0003] Traditional automatic packaging production lines have a low degree of automation and lack flexibility. In order to make up for this defect, the packaging production line uses a robotic arm to replace the traditional conveyor belt structure. The flexibility of the robotic arm enables it to complete a variety of complex actions, which can improve the automation, flexibility and versatility of the production line. However, during the robotic arm transformation process of the production line, the functions brought by the complex structure of other original equipment are replaced by the robotic arm, such as the tape cutter of the sealing structure. In the existing sealing structure, the tape cutter is driven by a motor to approach the tape and cut the tape. However, after the robotic arm transformation, the setting of the motor increases the production cost of the production line, increases the probability of equipment damage, and reduces the stability of the equipment. Therefore, the existing sealing structure cannot fully adapt to the robotic arm transformation of the packaging production line. Summary of the invention
[0004] The invention provides a carton sealing structure, comprising a carton sealing assembly and a mechanical arm arranged at one side of the carton sealing assembly for fixing and driving the carton. The carton sealing assembly comprises a support frame, on which a tape sticking and cutting assembly is fixedly installed. The tape sticking and cutting assembly comprises a frame, on which a tape roll, a front tape sticking frame and a rear tape sticking frame are rotatably installed. The front tape sticking roller is rotatably installed at the lower end of the front tape sticking frame, and the rear tape sticking roller is rotatably installed at the lower end of the rear tape sticking frame, and the lower parts of the front tape sticking roller and the rear tape sticking roller are in the same horizontal plane. The rear tape sticking frame is rotatably installed with one end of a synchronous connecting rod between a rotating shaft and the rear tape sticking roller, and the other end of the synchronous connecting rod is rotatably connected to the upper end of the front tape sticking frame, and the upper end of the rear tape sticking frame is rotatably installed with a return spring, which is fixedly connected to the frame, and the elastic deformation of the return spring resists the rear tape sticking roller from swinging upward, and the frame is fixedly installed with a tape cutting knife above the plane where the lower parts of the front tape sticking roller and the rear tape sticking roller are located.
[0005] Among them, a reversing roller is rotatably installed on the frame of the tape taping and cutting assembly. After the tape is pulled out from the tape roll, it extends to the reversing roller, and after reversing through the reversing roller, it extends to the front tape taping roller. After passing through the front tape taping roller, the tape extends to the rear tape taping roller.
[0006] Wherein, a centerline sealing assembly is installed on the support frame, and the centerline sealing assembly includes a mounting plate, a group of tape sticking and cutting assemblies are fixedly installed on the lower surface of the mounting plate, and a left and right cover folding structure is installed on one side of the tape sticking and cutting assembly of the mounting plate, and the left and right cover folding structure includes two folding rods arranged in a V shape, and the ends of the folding rods close to each other are rotatably connected with the mounting plate through a first connecting rod and the mounting plate and the end is close to the tape sticking and cutting assembly, and the ends of the folding rods away from each other are provided with a guide portion bent outwardly and the end is slidably installed to the mounting plate through a second connecting rod, and a plurality of reinforcing connecting rods are fixedly installed on the first connecting rod and the second connecting rod.
[0007] Among them, the front and rear cover folding structures are installed on the lower surface of the mounting plate at the other side of the left and right cover folding structure relative to the tape sticking and cutting assembly. The front and rear cover folding structure is an L-shaped frame, one side of the L-shaped frame is fixedly mounted to the mounting plate, and the other side of the L-shaped frame extends downward and away from the left and right cover folding structures. A number of support plates are arranged on both sides of the L-shaped frame.
[0008] Wherein, an edge sealing assembly is installed on the support frame, and the edge sealing assembly includes a mounting frame, a slide rail is provided on the mounting frame, and two mounting rods are installed by sliding through the cooperation of the slide rail and the slider, and a group of tape sticking and cutting assemblies are installed on each mounting rod, and the two groups of tape sticking and cutting assemblies are symmetrically arranged with each other. An adjustment motor is also fixedly installed on the mounting frame, and the adjustment motor is transmission-connected to an adjustment screw installed on the mounting frame for rotation. The adjustment screw is provided with two sections of threads with the middle part as the dividing line, and the spiral directions of the two sections of threads are opposite. The two sections of threads are respectively threadedly connected to the two mounting rods, and the adjustment screw is driven by the adjustment motor to rotate and adjust the distance between the two groups of tape sticking and cutting assemblies.
[0009] Among them, a side sweep assembly and a top pressure assembly are also installed on the mounting rod, a lower extension frame is installed on the mounting rod, the top pressure assembly includes a lower pressure angle frame rotatably installed on the lower extension frame, a lower pressure plate is installed on the lower pressure angle frame, a lower pressure spring is also installed on the lower pressure angle frame, the lower pressure spring and the lower extension frame are fixedly connected and resist the lower pressure angle frame to drive the lower pressure plate to swing downward, and a lower pressure cylinder driving the lower pressure angle frame to drive the lower pressure plate to swing downward is also fixedly installed on the lower extension frame; the side sweep assembly includes a rotating cylinder fixedly installed on the mounting rod, and a hair broom is fixedly installed on the power output end of the rotating cylinder.
[0010] Among them, the end effector of the robotic arm includes a first box grabbing plate, a second box grabbing plate is hingedly installed on the top of the first box grabbing plate, a box grabbing cylinder is rotatably installed on the back side of the first box grabbing plate, the telescopic end of the box grabbing cylinder extends upward and is rotatably installed with an obtuse angle frame, one side of the obtuse angle frame is rotatably connected to the telescopic end of the box grabbing cylinder, and the other side of the obtuse angle frame is fixedly connected to the back side of the second box grabbing plate, the telescopic movement of the box grabbing cylinder drives the second box grabbing plate to rotate relative to the first box grabbing plate, and negative pressure suction cups are arranged on the front sides of the first box grabbing plate and the second box grabbing plate.
[0011] Wherein, the first box grabbing plate and the second box grabbing plate are both provided with a plurality of negative pressure suction cups, and the negative pressure suction cups on the first box grabbing plate and the second box grabbing plate are arranged in a rectangular array.
[0012] The beneficial effects of the present invention are as follows: by optimizing and transforming the taping and cutting components, and utilizing the cooperation of the front taping frame, the rear taping frame, the front taping roller, the rear taping roller, the synchronous connecting rod and the return spring, the carton can be driven by a mechanical arm to move horizontally for taping and sealing, and then the carton can be lifted for tape cutting, without the need for a motor-driven tape cutting knife, thereby effectively improving the flexibility and stability of the production line and reducing the production and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the sealing component.
[0014] Figure 2 It is a three-dimensional structural schematic diagram of the center line sealing tape assembly.
[0015] Figure 3 It is a three-dimensional structural schematic diagram of the center line sealing tape assembly from another angle.
[0016] Figure 4 It is a schematic diagram of the coordination of the tape sticking and cutting components and the left and right cover folding structures.
[0017] Figure 5 It is a schematic diagram of the side plan structure of the tape sticking and cutting assembly, with part of the structure hidden.
[0018] Figure 6 It is a three-dimensional structural schematic diagram of the edge sealing tape assembly.
[0019] Figure 7 It is a schematic diagram of the three-dimensional structure of the edge sealing tape assembly from another angle.
[0020] Figure 8 It is a three-dimensional structural diagram of the edge sealing tape assembly, hiding the installation frame.
[0021] Fig. 9 It is a schematic diagram of the coordination between the sealing components and the carton.
[0022] Fig.10It is a schematic diagram of the three-dimensional structure of the robotic arm.
[0023] Fig.11 It is a schematic diagram of the structure at the end effector of the robotic arm.
[0024] Fig.12 It is a schematic diagram of the coordination between the carton sealing structure and the packing structure of the production line. DETAILED DESCRIPTION
[0025] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
[0026] As attached Figure 1-12The carton sealing structure shown in the figure comprises a carton sealing assembly 1 and a mechanical arm 2 arranged on one side of the carton sealing assembly 1 for fixing and driving the carton, the carton sealing assembly 1 comprises a support frame 3, the top of the support frame 3 is arranged in an L shape, a center line sealing assembly 4 is installed on one side of the top of the support frame 3, and an edge sealing assembly 5 is installed on the other side; the center line sealing assembly 4 comprises a mounting plate 6, a group of tape taping and cutting assemblies 7 are fixedly installed on the lower surface of the mounting plate 6, the tape taping and cutting assembly 7 comprises a frame 8, the frame 8 is fixedly installed to the mounting plate 6, a tape roll 9, a front tape rack 10 and a rear tape rack 11 are rotatably installed on the frame 8, a front tape roller 12 is rotatably installed at the lower end of the front tape rack 10, and a rear tape roller 13 is rotatably installed at the lower end of the rear tape rack 11, the lowest parts of the front tape roller 12 and the rear tape roller 13 are in the same horizontal plane, so that the tape is shaped when passing through the front tape roller 12 and the rear tape roller 13 The rear tape rack 11 is rotated between the rotating shaft and the rear tape roller 13 to facilitate tape taping of the cartons. One end of the synchronous connecting rod 14 is installed between the rotating shaft and the rear tape roller 13. The other end of the synchronous connecting rod 14 is rotatably connected to the upper end of the front tape rack 10. The upper end of the rear tape rack 11 is rotatably installed with a return spring 15. The return spring 15 is fixedly connected to the frame 8. The elastic deformation of the return spring 15 resists the upward swing of the rear tape roller 13. The frame 8 is in the front tape A tape cutting knife 16 is fixedly installed above the plane where the lowest parts of the roller 12 and the rear taping roller 13 are located, and a reversing roller 17 is also rotatably installed on the frame 8. When taping, the tape is pulled out from the tape roll 9 and extends toward the reversing roller 17. After reversing the reversing roller 17, it falls onto the limiting frame 18 below the reversing roller 17. After bypassing the limiting frame 18, the tape extends to the front taping roller 12. After passing the front taping roller 12, the tape extends to the rear taping roller 13. A left and right cover folding structure 19 is installed on one side of the tape sticking and cutting assembly 7 of the mounting plate 6. The left and right cover folding structure 19 includes two folding rods 20 arranged in a V shape. The ends of the folding rods 20 that are close to each other are rotatably connected to the mounting plate 6 through a first connecting rod 21 and the end is close to the tape sticking and cutting assembly 7. The ends of the folding rods 20 that are away from each other are provided with an outwardly bent guide portion 22 and the end is slidably installed to the mounting plate 6 through a second connecting rod 23. Two reinforcing connecting rods 24 are fixedly installed on the first connecting rod 21 and the second connecting rod 23. The two reinforcing connecting rods 24 can not only strengthen the structural strength of the left and right cover folding structure 19, but also form a limiting effect on the left and right cover plates of the carton, thereby improving the folding stability of the left and right cover plates. A front and rear cover folding structure 25 is installed on the lower surface of the mounting plate 6 at the other side of the left and right cover folding structure 19 relative to the tape sticking and cutting assembly 7. The front and rear cover folding structure 25 is an L-shaped frame, one side of the L-shaped frame is fixedly mounted to the mounting plate 6, and the other side of the L-shaped frame extends downward and away from the left and right cover folding structure 19. Two support plates 26 are arranged on both sides of the L-shaped frame, and a total of four support plates 26 are arranged on both sides. The inner bend of the L of the L-shaped frame is an arc structure.
[0027] The edge sealing tape assembly 5 includes a rectangular mounting frame 27, wherein the mounting frame 27 is provided with a slide rail on one pair of opposite sides thereof, and two mounting rods 28 are installed thereon through the cooperation and sliding of the slide rail and the slide block, and a slide block is fixedly installed at each end of the mounting rod 28 and is respectively slidably connected to the two slide rails, and a group of tape sticking and cutting tape assemblies 7 are installed on each mounting rod 28, and the frame 8 of the tape sticking and cutting tape assemblies 7 is fixedly installed on the mounting rod 28, and the two groups of tape sticking and cutting tape assemblies 7 are symmetrically arranged with each other, and an adjustment motor 29 is also fixedly installed on the mounting frame 27, and the adjustment motor 29 is connected to the adjustment screw 30 that is rotatably installed on the mounting frame 27 through the cooperation transmission of a belt and a pulley, and the adjustment screw 30 is provided with two sections of threads with the middle part as the dividing line, and the spiral directions of the two sections of threads are opposite, and the two sections of threads are respectively threadedly connected to the two mounting rods 28, and the adjustment screw 30 is driven by the adjustment motor 29 to rotate and adjust the two groups of tape sticking and cutting tape assemblies The distance between the belt shearing belt assembly 7 is determined by the spacing between the belt shearing belt assembly 7 and the mounting rod 28. Two sets of side sweeping assemblies 31 and a set of top pressing assemblies 32 are also mounted on each mounting rod 28. Two lower extension frames 33 are mounted on the mounting rod 28. The top pressing assembly 32 includes a lower pressing angle frame 34 rotatably mounted on the lower extension frame 33. The corner of the lower pressing angle frame 34 is rotatably connected to the lower extension frame 33. The two lower pressing angle frames 34 are jointly mounted with the same lower pressing plate 35. A lower pressing spring 36 is also mounted on the lower pressing angle frame 34. The lower pressing spring 36 is fixedly connected to the lower extension frame 33 and resists the lower pressing angle frame 34 from driving the lower pressing plate 35 to swing downward. A lower pressing cylinder that drives the lower pressing angle frame 34 to drive the lower pressing plate 35 to swing downward is also fixedly mounted on the lower extension frame 33; the side sweeping assembly 31 includes a rotating cylinder 37 fixedly mounted on the mounting rod 28, and a hair sweep 38 is fixedly mounted on the power output end of the rotating cylinder 37. The two sets of side sweeping assemblies 31 are respectively mounted on the two ends of the top pressing assembly 32.
[0028] The robot arm 2 adopts a conventional four-axis robot arm 2 body with a specially designed end effector, and the end effector includes a first box grabbing plate 39, and the top of the first box grabbing plate 39 is hingedly installed with a second box grabbing plate 40 through two hinges, and the back of the first box grabbing plate 39 is rotatably installed with two box grabbing cylinders 41, and the telescopic end of the box grabbing cylinder 41 extends upward and is rotatably installed with an obtuse frame 42, one side of the obtuse frame 42 is rotatably connected to the telescopic end of the box grabbing cylinder 41, and the other side of the obtuse frame 42 is connected to the back of the second box grabbing plate 40. The two surfaces are fixedly connected, and the extension and contraction of the box grabbing cylinder 41 drives the second box grabbing plate 40 to rotate relative to the first box grabbing plate 39, and the rotation range is 90°, from the first box grabbing plate 39 and the second box grabbing plate 40 being in the same plane to being perpendicular to each other. The front sides of the first box grabbing plate 39 and the second box grabbing plate 40 are provided with a plurality of negative pressure suction cups 43, and the negative pressure suction cups 43 on the first box grabbing plate 39 and the second box grabbing plate 40 are arranged in a rectangular array, and the negative pressure suction cups 43 are connected to an external negative pressure pump through a ventilation pipe, thereby realizing negative pressure adsorption.
[0029] The box sealing structure provided in this embodiment is part of an automatic packaging production line. When in use, the distance between the two groups of tape sticking and cutting assemblies 7 in the edge sealing assembly 5 is adjusted by adjusting the motor 29 according to the size of the carton, so that the two groups of tape sticking and cutting assemblies 7 match the two side edges of the carton.
[0030] During the carton sealing process, the robot arm 2 first takes out the opened carton from the unpacking equipment on the production line, and then Fig. 9 As shown, the carton is moved to one side of the center line sealing assembly 4 of the sealing assembly 1, and the carton enters the sealing assembly 1 from the center line sealing assembly 4. First, the front cover of the carton is brought into contact with the L-shaped frame and the front cover is folded. Then, the carton crosses the L-shaped frame and moves backward, so that the rear cover of the carton is brought into contact with the L-shaped frame and the rear cover is folded. The carton moves forward again and the left cover and the right cover are respectively brought into contact with the corresponding folding rods 20. Under the action of the folding rods 20, the left cover and the right cover are folded by themselves, and the carton continues to move forward. The carton moves forward and contacts the falling tape, and the tape is naturally initially adhered to the center line between the left and right covers of the carton. The carton continues to move forward and drives the tape to move to the front tape roller 12 and the rear tape roller 13. The front tape roller 12 and the rear tape roller 13 cooperate to press the tape onto the carton. The carton moves forward again to separate from the front tape roller 12 and cross the tape cutting knife 16. The carton rises under the drive of the robot arm 2 and lifts the rear tape roller 13. The rear tape roller 13 drives the front tape roller 12 through the synchronous rod. The tape sticking roller 12 rises synchronously, so that the adhesive tape and the tape cutting knife 16 contact and complete the tape cutting, that is, the sealing tape of the center line of the carton is completed, and the carton continues to move forward and turns to the edge sealing tape assembly 5, then enters the edge sealing tape assembly 5 and contacts with the two hanging adhesive tapes, and the two adhesive tapes are naturally adhered to the edges on both sides of the carton, and the adhesive tape is sealed to the edges on both sides of the carton in the same way as the center line sealing tape assembly 4 and the adhesive tape is cut off, and the carton continues to move forward to the bottom of the top pressure assembly 32, and the lower pressure plate 35 swings downward to press the adhesive tape, and at the same time, the hair sweep 38 of one group of side sweep assemblies 31 is driven by the rotating cylinder 37 to pat the end of the adhesive tape, and the carton moves to another group of side sweep assemblies 31 to pat the other end of the adhesive tape, so that the adhesive tape is firmly adhered to the carton, and the sealing of one end of the carton is completed at this time, and the mechanical arm 2 drives the carton to the packing equipment 44 to complete the packing, and then repeats the above process to complete the sealing work at the other end of the carton, that is, complete a packing and sealing process.
[0031] The above-mentioned embodiment only expresses one implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.
Claims
1. A carton sealing structure, comprising a carton sealing assembly (1) and a mechanical arm (2) arranged on one side of the carton sealing assembly (1) for fixing and driving the carton, characterized in that: The box sealing assembly (1) comprises a support frame (3), on which a tape sticking and cutting assembly (7) is fixedly mounted, the tape sticking and cutting assembly (7) comprises a frame (8), on which a tape roll (9), a front tape sticking frame (10) and a rear tape sticking frame (11) are rotatably mounted, a front tape sticking roller (12) is rotatably mounted at the lower end of the front tape sticking frame (10), a rear tape sticking roller (13) is rotatably mounted at the lower end of the rear tape sticking frame (11), the lowermost parts of the front tape sticking roller (12) and the rear tape sticking roller (13) are in the same horizontal plane, and the rear tape sticking frame (11) is rotatably mounted at the lower end of the front tape sticking frame (10). ) One end of a synchronous connecting rod (14) is rotatably installed between the rotating shaft and the rear tape roller (13), and the other end of the synchronous connecting rod (14) is rotatably connected to the upper end of the front tape frame (10). The upper end of the rear tape frame (11) is rotatably installed with a return spring (15), and the return spring (15) is fixedly connected to the frame (8). The elastic deformation of the return spring (15) resists the rear tape roller (13) from swinging upward. The frame (8) is fixedly installed with a tape cutting knife (16) above the plane where the lowest parts of the front tape roller (12) and the rear tape roller (13) are located.
2. A carton sealing structure according to claim 1, characterized in that: A reversing roller (17) is also rotatably mounted on the frame (8) of the tape taping and cutting assembly (7). After the adhesive tape is pulled out from the tape roll (9), it extends toward the reversing roller (17), and after reversing through the reversing roller (17), it extends toward the front tape taping roller (12). After passing through the front tape taping roller (12), the adhesive tape extends toward the rear tape taping roller (13).
3. A carton sealing structure according to claim 2, characterized in that: The support frame (3) is provided with a centerline tape sealing assembly (4), the centerline tape sealing assembly (4) comprising a mounting plate (6), a group of tape sticking and cutting assemblies (7) being fixedly mounted on the lower surface of the mounting plate (6), a left and right cover folding structure (19) being mounted on one side of the tape sticking and cutting assemblies (7) on the mounting plate (6), the left and right cover folding structure (19) comprising two folding rods (20) arranged in a V-shape, one end of the folding rods (20) being close to each other being rotatably connected to the mounting plate (6) through a first connecting rod (21) and the end being close to the tape sticking and cutting assemblies (7), one end of the folding rods (20) being far away from each other being provided with an outwardly bent guide portion (22), and the end being slidably mounted to the mounting plate (6) through a second connecting rod (23), and a plurality of reinforcing connecting rods (24) being fixedly mounted on the first connecting rod (21) and the second connecting rod (23).
4. A carton sealing structure according to claim 3, characterized in that: A front and rear cover folding structure (25) is installed on the lower surface of the mounting plate (6) at the other side of the left and right cover folding structure (19) relative to the tape sticking and cutting assembly (7). The front and rear cover folding structure (25) is an L-shaped frame, one side of the L-shaped frame is fixedly mounted on the mounting plate (6), and the other side of the L-shaped frame extends downward and away from the left and right cover folding structure (19). A plurality of support plates (26) are arranged on both sides of the L-shaped frame.
5. A carton sealing structure according to claim 2, characterized in that: The support frame (3) is provided with an edge tape sealing assembly (5), the edge tape sealing assembly (5) comprising a mounting frame (27), a slide rail is provided on the mounting frame (27) and two mounting rods (28) are mounted thereon in a sliding manner through the cooperation of the slide rail and the slider, a group of tape sticking and cutting assemblies (7) are mounted on each mounting rod (28), the two groups of tape sticking and cutting assemblies (7) are symmetrically arranged with each other, an adjustment motor (29) is also fixedly mounted on the mounting frame (27), the adjustment motor (29) is transmission-connected to an adjustment screw (30) which is rotatably mounted on the mounting frame (27), the adjustment screw (30) is provided with two sections of threads with the middle portion as a dividing line, the two sections of threads have opposite spiral directions, the two sections of threads are respectively threadedly connected to the two mounting rods (28), the adjustment motor (29) drives the adjustment screw (30) to rotate and adjust the distance between the two groups of tape sticking and cutting assemblies (7).
6. A carton sealing structure according to claim 5, characterized in that: The mounting rod (28) is also provided with a side sweeping assembly (31) and a top pressure assembly (32). The mounting rod (28) is provided with a lower extension frame (33). The top pressure assembly (32) comprises a lower pressure angle frame (34) rotatably mounted on the lower extension frame (33). A lower pressure plate (35) is mounted on the lower pressure angle frame (34). A lower pressure spring (36) is also mounted on the lower pressure angle frame (34). The lower pressure spring (36) is fixedly connected to the lower extension frame (33) and resists the lower pressure angle frame (34) from driving the lower pressure plate (35) to swing downward. A lower pressure cylinder is also fixedly mounted on the lower extension frame (33) for driving the lower pressure angle frame (34) to drive the lower pressure plate (35) to swing downward. The side sweeping assembly (31) comprises a rotating cylinder (37) fixedly mounted on the mounting rod (28). A hair sweep (38) is fixedly mounted on the power output end of the rotating cylinder (37).
7. A carton sealing structure according to claim 1, characterized in that: The end effector of the mechanical arm (2) comprises a first box grabbing plate (39), a second box grabbing plate (40) being hingedly mounted on the top of the first box grabbing plate (39), a box grabbing cylinder (41) being rotatably mounted on the back of the first box grabbing plate (39), an obtuse-angle frame (42) being extended upward and rotatably mounted on the telescopic end of the box grabbing cylinder (41), one side of the obtuse-angle frame (42) being rotatably connected to the telescopic end of the box grabbing cylinder (41), and the other side of the obtuse-angle frame (42) being fixedly connected to the back of the second box grabbing plate (40), the telescopic movement of the box grabbing cylinder (41) driving the second box grabbing plate (40) to rotate relative to the first box grabbing plate (39), and negative pressure suction cups (43) being arranged on the front sides of both the first box grabbing plate (39) and the second box grabbing plate (40).
8. A carton sealing structure according to claim 7, characterized in that: A plurality of negative pressure suction cups (43) are provided on the first box grabbing plate (39) and the second box grabbing plate (40), and the negative pressure suction cups (43) on the first box grabbing plate (39) and the second box grabbing plate (40) are arranged in a rectangular array.