Express parcel packaging auxiliary device

Abstract

The utility model discloses an express parcel packaging auxiliary device, relates to the technical field of logistics packaging, and aims to solve the problems that existing manual cover folding and pressing are strenuous, the efficiency is low, a folded cover is easy to bounce, and existing box sealing equipment is difficult to adapt to cartons of different specifications and is inaccurate in positioning. The device is arranged at the feeding end of the carton sealing machine and comprises a supporting frame with a conveying roller and a frame composed of side plates and a top plate, a pressing mechanism and a pressing roller are installed below the lifting frame, and centering abutting mechanisms are arranged on the two sides of the supporting frame. The centering abutting mechanism comprises a swing plate, an abutting wheel and a spring and can automatically center the carton; the pressing mechanism is provided with a swing plate, an abutting wheel with a one-way bearing and a spring and can stably press the folding cover; the electric push rod is matched with the guide rail slider to adjust the height of the lifting frame; according to the carton sealing device, the carton sealing device can be matched with cartons of different specifications, automatic pressing of folded covers and accurate conveying of the cartons can be achieved, the carton sealing device is mainly used for assisting in sealing of the express cartons, and the carton sealing efficiency and quality are greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of logistics packaging technology, and in particular relates to an auxiliary device for packaging express parcels. Background Technology

[0002] In the process of sealing express parcels, the pre-processing of cardboard boxes before sealing has long been inconvenient, seriously affecting sealing efficiency and quality.

[0003] When manually folding and pressing the carton flaps, the operator needs to hold the flap in place with one hand and use the other hand to assist in the subsequent sealing operation. This not only consumes labor costs but also directly leads to low work efficiency. Furthermore, it is difficult to guarantee the strength and stability of manual pressing, and the flaps are prone to popping up, which in turn affects the sealing and aesthetics of the subsequent sealing.

[0004] In the use of existing automated carton sealing equipment, due to the variety of carton specifications to be sealed, with significant differences in width and height, the feeding end of existing carton sealing machines is usually only equipped with a simple conveying structure and lacks an effective centering and positioning mechanism. Cartons of different widths are prone to deviation during the conveying process, resulting in the carton conveying direction being inconsistent with the feeding direction of the carton sealing machine. This not only affects the sealing accuracy but may also cause the carton to jam, reducing the overall operating efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary device for packaging express parcels. In this utility model, the device can be adapted to existing carton sealing machines. It realizes automatic pressing of the folding lid through pressing rollers and pressing mechanism; the centering abutment mechanism can automatically position cartons of different widths to ensure accurate delivery of cartons; the electric push rod drives the lifting frame in conjunction with the slider guide rail, which can flexibly adjust the pressing height to adapt to different cartons; the device has a simple structure, is easy to operate, and has a good adaptation effect. It can assist in completing the packaging and sealing of cartons, greatly improve the packaging efficiency of express cartons, and solve existing technical problems.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] A parcel packaging auxiliary device, installed at the feed end of a carton sealing machine, includes:

[0008] A support frame, the top of which is rotatably mounted with a plurality of conveyor rollers for conveying boxes to be packaged;

[0009] Multiple side plates are fixed to both sides of the support frame, and their top ends extend above the conveyor roller. A top plate is fixed to the top of the corresponding two side plates.

[0010] A lifting frame is located below the top plate;

[0011] Multiple pressing mechanisms are installed at the bottom of the lifting frame. Each pressing mechanism includes multiple second swing plates, and the ends of the second swing plates are provided with second abutting wheels. The second abutting wheels are used to press the folded flaps of the carton during the carton conveying process.

[0012] In addition, multiple sets of centering abutment mechanisms are provided on the side of the side plate near the sealing machine. The corresponding two sets of centering abutment mechanisms cooperate with each other. The centering abutment mechanism includes multiple first swing plates. The end of the first swing plate is hinged with a first abutment wheel. The first abutment wheel is used to abut against the side wall of the carton so as to automatically push the carton to the center position of the support frame when the carton is conveyed.

[0013] Optionally, the centering abutment mechanism further includes a first fixing rod fixed to one side of the side plate, one end of the first swing plate being rotatably sleeved on the outer wall of the first fixing rod; a first fixing plate is provided at the end of the first swing plate away from the first abutment wheel, and the first fixing plate is fixedly connected to the first fixing rod; one side of the first fixing plate is connected to the corresponding first swing plate through a first spring, and the first spring drives the first swing plate to deflect toward the center of the support frame so that the first abutment wheel remains in contact with the side wall of the carton.

[0014] Optionally, guide rails are fixed to the sides of the two side plates that are close to each other, and sliders are slidably connected to the guide rails. The sliders are fixedly connected to the lifting frame.

[0015] Optionally, an electric push rod is fixed to the top of the top plate, and the push rod end of the electric push rod is fixedly connected to the top of the lifting frame to drive the lifting frame to move up and down along the guide rail.

[0016] Optionally, the pressing mechanism includes a second fixed frame fixed to the bottom of the lifting frame, a second fixed rod fixed to the bottom of the second fixed frame, and one end of the second swing plate rotatably sleeved on the outer wall of the second fixed rod; a second fixed plate is provided at the end of the second swing plate away from the second abutment wheel, and the second fixed plate is fixedly connected to the second fixed rod; one side of the second fixed plate is connected to the corresponding second swing plate through a second spring, and the second spring drives the second swing plate to deflect downward so that the second abutment wheel maintains the pressing of the folding cover.

[0017] Optionally, the second abutment wheel is mounted on the end of the second swing plate via a one-way bearing, so that the second abutment wheel can only rotate in one direction.

[0018] Optionally, a first fixing frame is fixed to the bottom of the lifting frame, and an mounting frame is provided below the first fixing frame. A pressing roller for pre-pressing the folding lid is rotatably installed inside the mounting frame. The pressing roller is located near the feeding end of the carton sealing machine on the lifting frame to complete the pre-pressing of the carton with the contents packed on it.

[0019] Optionally, a guide rod is fixed to the top of the mounting frame, the top end of the guide rod slides through the first fixed frame, and a limiting block is provided at the end; both ends of the mounting frame are fixedly installed with levers to facilitate manual lifting of the pressing roller.

[0020] Optionally, the top height of the conveyor roller is the same as the height of the roller shaft inside the carton sealing machine.

[0021] The embodiments of this utility model have the following beneficial effects:

[0022] In this invention, addressing the time-consuming and labor-intensive problem of manual folding and pressing, the device can be used in conjunction with existing carton sealing machines. Through the cooperation of the pressing roller and the pressing mechanism, automatic pressing of the folded lid can be achieved, eliminating the need for operators to manually fix the lid. The pressing roller can pre-press the carton lid under its own weight, and the second abutting wheel in the subsequent pressing mechanism continuously presses the lid under the action of the second spring. Furthermore, the one-way bearing restricts the reverse rotation of the second abutting wheel, effectively preventing the lid from popping up. The pressing stability far exceeds that of manual operation, completely freeing up manpower and improving work efficiency.

[0023] In this invention, the device achieves automatic centering through multiple sets of centering and abutting mechanisms, eliminating the need for manual adjustment of the baffle. The first abutting wheel in the centering and abutting mechanism is always in contact with the side wall of the carton under the action of the first spring. When cartons of different widths pass through, the first abutting wheel can be squeezed to drive the first swing plate to rotate slightly. The elastic restoring force of the first spring will push the carton smoothly towards the center of the support frame, ensuring that the carton conveying direction is consistent with the feeding direction of the sealing machine. No manual repeated calibration is required, and the positioning is accurate and efficient, ensuring that the carton is accurately sent to the subsequent sealing machine to complete the sealing process.

[0024] In this utility model, the device drives the lifting frame to rise and fall via an electric push rod, which can flexibly adjust the pressing height. The lifting frame moves smoothly without deviation through the cooperation of the slider and the guide rail. At the same time, the pressing mechanism can be quickly adjusted to the appropriate height according to the carton of different heights, so that the pressing roller and the pressing mechanism can accurately align with the folding position without replacing the device or making temporary modifications, which greatly improves the versatility of the device.

[0025] In this invention, the entire device has a simple structure, smooth coordination of all mechanisms, and convenient adjustment and operation. It can accurately adapt to various sizes of express carton, and can complete the pre-processing operation without complicated operations. It perfectly meets the high-efficiency operation requirements in actual production, effectively improves the efficiency and quality of carton sealing pre-processing, and provides a reliable guarantee for the smooth progress of subsequent carton sealing operations.

[0026] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the working state of an embodiment of the present invention;

[0029] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the centering abutment mechanism according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of a lifting frame structure according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the pressing mechanism structure according to an embodiment of the present invention.

[0033] In the diagram: 1. Sealing machine; 2. Support frame; 3. Conveyor roller; 4. Side plate; 5. Top plate; 6. Electric push rod; 7. Guide rail; 8. Slider; 9. Lifting frame; 10. First fixed rod; 11. First swing plate; 12. First abutting wheel; 13. First fixed plate; 14. First spring; 15. Mounting frame; 16. Pressing roller; 17. Toggle lever; 18. Guide rod; 19. First fixed frame; 20. Second fixed frame; 21. Second fixed rod; 22. Second swing plate; 23. Second abutting wheel; 24. One-way bearing; 25. Second fixed plate; 26. Second spring. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0037] In one embodiment: Please refer to Figure 1-5 As shown, this embodiment provides a packaging auxiliary device. The express parcel packaging auxiliary device is set at the feeding end of the sealing machine 1 to assist in completing the packaging work of express parcels. The device mainly consists of a support frame 2, a side plate 4, a top plate 5, a lifting frame 9, a centering abutment mechanism, and a pressing mechanism.

[0038] In this embodiment, the support frame 2 serves as the basic support structure of the entire device. Multiple conveying rollers 3 are rotatably mounted on its top. The multiple conveying rollers 3 are driven by corresponding motors, and the height of the multiple conveying rollers 3 is consistent with that of the roller shaft inside the sealing machine 1. When the box to be packaged is placed on the conveying rollers 3, it can be smoothly conveyed into the sealing machine 1.

[0039] In this embodiment, multiple side plates 4 are fixedly installed on both sides of the support frame 2. The multiple side plates 4 are in pairs, and the top of these side plates 4 extends to the top of the conveyor roller 3. The top of the corresponding two side plates 4 is fixedly installed with the same top plate 5, forming a frame structure to provide installation positions for other components.

[0040] In this embodiment, the centering abutment mechanism is disposed on one side of the adjacent side plate 4, and the two corresponding sets of centering abutment mechanisms cooperate with each other to center and position the carton during transport; each centering abutment mechanism includes a first fixing rod 10 fixedly installed on one side of the side plate 4, the first fixing rod 10 being located on the side of the corresponding side plate 4 closer to the sealing machine 1, one end of each of the multiple first swing plates 11 being rotatably sleeved on the outer wall of the first fixing rod 10, and a first fixing plate 13 being disposed at the end of each of the multiple first swing plates 11 away from the first abutment wheel 12. All are fixedly connected to the outer wall of the first fixed rod 10; multiple first swing plates 11 are deflected toward the center of the support frame 2, so that the first abutting wheel 12 can abut against the side wall of the carton being conveyed; one side of each of the multiple first fixed plates 13 is fixedly connected to a first spring 14 through a spring seat, and the other end of each of the multiple first springs 14 is fixedly connected to one side of the adjacent first swing plate 11 through a spring seat; under the continuous drive of the first spring 14, the first swing plate 11 remains deflected, ensuring that the first abutting wheel 12 can abut against the carton. When the carton deviates from the center position during conveying, it will squeeze the first abutting wheel 12 on one side, causing the first swing plate 11 on that side to rotate against the elastic force of the first spring 14, while the first abutting wheel 12 on the other side continues to apply a pushing force to the carton under the action of the first spring 14, thereby pushing the carton back to the center position.

[0041] In this embodiment, the lifting frame 9 is positioned below multiple top plates 5, and its movement is achieved through guide rails 7 and sliders 8 for stable vertical movement. Guide rails 7 are fixedly installed on the sides of the corresponding two side plates 4 that are close to each other, and sliders 8 are slidably installed on one side of each guide rail 7. All sliders 8 are fixedly connected to the outer wall of the lifting frame 9. Electric push rods 6 are fixedly installed on the top of each of the multiple top plates 5, and one end of each electric push rod 6 is fixedly connected to the top of the lifting frame 9. By controlling the extension and retraction of the electric push rods 6, the lifting frame 9 can be driven to complete the lifting and lowering process, thereby achieving height adjustment to accommodate cartons of different heights.

[0042] In this embodiment, the pressing mechanism is installed at the bottom of the lifting frame 9 to press the folded lid of the carton during transport; the pressing mechanism includes a second fixed frame 20 fixedly installed at the bottom of the lifting frame 9, and a second fixed rod 21 is fixedly installed at the bottom of the second fixed frame 20 by a bracket. One end of each of the multiple second swing plates 22 is rotatably sleeved on the outer wall of the second fixed rod 21. A second fixed plate 25 is provided at the end of each of the multiple second swing plates 22 away from the second abutting wheel 23. All the multiple second fixed plates 25 are fixedly connected to the outer wall of the second fixed rod 21 and remain horizontal. One end of each of the multiple second swing plates 22 deflects downwards to ensure that the second abutting wheel 23 can press the folded lid of the conveying carton. One side of each of the multiple second fixed plates 25 is fixedly connected to a second spring 26 via a spring seat. The other end of each of the multiple second springs 26 is fixedly connected to one side of an adjacent second swing plate 22 via a spring seat. Under the action of the second spring 26, the second abutting wheel 23 can press the folded lid of cartons of different heights accordingly. When the height of the carton changes, the second swing plate 22 will overcome the elastic force of the second spring 26 and rotate, ensuring that the second abutting wheel 23 always contacts the folded lid of the carton and applies pressure.

[0043] This application can be used in the field of logistics packaging technology, or in other fields applicable to this application.

[0044] In another embodiment: Reference Figure 4 , 5 A packaging auxiliary device for express parcels is described, which is applied to the field of logistics packaging technology. The structure of this embodiment is basically the same as that of the aforementioned embodiments, except that:

[0045] One end of each of the multiple second swing plates 22 is fixedly mounted with a one-way bearing 24 via a connecting shaft, and multiple second abutment wheels 23 are fixedly sleeved on the outer wall of the one-way bearing 24, thereby realizing the unidirectional rotation of the multiple second abutment wheels 23. During the carton conveying process, the second abutment wheels 23 can rotate with the movement of the carton, reducing the frictional resistance to the carton, and preventing the folded lid from being lifted when the carton moves in the opposite direction.

[0046] In this embodiment, a first fixed frame 19 is fixedly installed at the bottom of the lifting frame 9, and an mounting frame 15 is provided below the first fixed frame 19. A pressing roller 16 is rotatably installed inside the mounting frame 15 to pre-press the carton containing the contents for folding. The pressing roller 16 is located at the position of the lifting frame 9 near the feeding end of the sealing machine 1. When the carton is conveyed to this position, the pressing roller 16 first pre-presses the carton to fold, causing it to partially fold. Two guide rods 18 are fixedly installed on the top of the mounting frame 15. The top ends of the two guide rods 18 slide through the first fixed frame 19, and the top ends of the two guide rods 18 are fixedly installed with limit blocks to prevent the mounting frame 15 from detaching from the first fixed frame 19 during movement. Preferably, an auxiliary compression spring can be sleeved on the outside of the guide rod 18. The two ends of the auxiliary compression spring abut against the bottom of the first fixed frame 19 and the top of the mounting frame 15, respectively. By keeping the auxiliary compression spring in a compressed state, it can provide continuous downward pressure to the pressing roller, thereby ensuring stable pressing in conjunction with its own weight.

[0047] In this embodiment, levers 17 are fixedly installed at both ends of the mounting frame 15 to facilitate manual lifting of the pressing roller 16. When it is necessary to process cartons with special shapes or those that do not need to be pre-pressed, the pressing roller 16 can be lifted by levers 17 to allow the cartons to pass through smoothly.

[0048] This device also includes a PLC controller, which is electrically connected to the drive motors of the electric push rod 6 and the conveyor roller 3. The PLC controller can receive the linkage signal from the carton sealing machine 1 and control the rotation speed of the conveyor roller 3 and the extension stroke of the electric push rod 6 to achieve coordinated matching between the height adjustment of the lifting frame 9 and the carton conveying rhythm, ensuring that the pressing, centering and conveying actions are carried out synchronously.

[0049] However, as is well known to those skilled in the art, the working principles and wiring methods of the carton sealing machine 1 and the electric push rod 6 are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0050] The usage process and working principle of this utility model technical solution are as follows:

[0051] When in use, the operator places the carton to be sealed on the support frame 2 near one end. At this time, the operator can manually lift the mounting frame 15 through the lever 17. After the carton is placed in place, the lever 17 is released. Then the pressing roller 16 can press on the top of the carton under its own weight to ensure the stable closing of the carton flap.

[0052] When the carton is placed, it is located on the conveyor roller 3. The rotation of the conveyor roller 3 can drive the carton to move towards the sealing machine 1. During the movement of the carton, the first spring 14 in the centering abutment mechanism on both sides can continuously apply force, thereby pushing the first swing plate 11 to deflect towards the center of the support frame 2, so that the first abutment wheel 12 always keeps in contact with the side wall of the carton. When cartons of different widths pass through, they will generate a reverse force on the first abutment wheel 12 on both sides, forcing the first swing plate 11 to rotate slightly around the first fixed rod 10, while compressing the first spring 14. The elastic restoring force of the spring will form a reverse clamping force, which will push the carton smoothly to the center position of the support frame 2, realize the automatic centering and positioning of cartons of different widths, and ensure that the conveying direction of the carton is consistent with the feeding direction of the sealing machine 1.

[0053] Before starting work, the electric push rod 6 can be activated according to the height of the carton. The extension and retraction of the electric push rod 6 drives the lifting frame 9 to move vertically along the guide rail 7. The slider 8 cooperates with the guide rail 7 to ensure that the lifting frame 9 moves smoothly without deviation. After the lifting frame 9 is adjusted to a suitable height, the electric push rod 6 is turned off. At this time, the pressing roller 16 and the pressing mechanism at the bottom of the lifting frame 9 are both at the height position that matches the folding of the carton.

[0054] As the carton continues to move forward, the pre-pressed carton enters the range of the pressing mechanism. The second spring 26 in the pressing mechanism pushes the second swing plate 22 downward, causing the second abutting wheel 23 to press firmly against the carton flap. When the carton is conveyed forward, it can drive the second abutting wheel 23 to rotate around the one-way bearing 24. The one-way bearing 24 restricts the abutting wheel from rotating in the opposite direction, thereby effectively preventing the flap from popping up. When facing carton flaps of different heights, the second abutting wheel 23 will be subjected to different upward forces, forcing the second swing plate 22 to rotate around the second fixed rod 21 and compress the second spring 26. The elastic force of the spring ensures that the second abutting wheel 23 always applies a stable pressing force to the flap, realizing the adaptive pressing of carton flaps of different heights.

[0055] After the carton has been centered and folded, it will smoothly enter the sealing machine 1 under the continuous drive of the conveyor roller 3 and complete the subsequent sealing operation. Throughout the process, the various mechanisms work together to complete the pre-processing of cartons of different specifications without excessive manual intervention, ensuring a smooth and efficient sealing process.

[0056] The mating surfaces of the guide rail 7 and slider 8, the bearings of the conveying roller 3, and the rotating mating parts of the first / second fixed rod and the swing plate of this device need to be lubricated regularly. At the same time, the dust accumulated in the equipment should be cleaned regularly to ensure that all moving parts operate flexibly. The maintenance cycle can be adjusted according to the dust concentration of the actual use environment. It is generally recommended to maintain it once every 15-30 days.

[0057] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0058] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish the features and do not have any actual order or directional meaning. This application is not limited to this.

[0059] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A parcel packaging auxiliary device, disposed at the feed end of a carton sealing machine (1), characterized in that, include: Support frame (2), the top of which is rotatably mounted with a plurality of conveying rollers (3) for conveying boxes to be packaged. Multiple side plates (4) are fixed to both sides of the support frame (2) and their top ends extend above the conveying roller (3). Top plates (5) are fixed to the top of the corresponding two side plates (4). A lifting frame (9) is located below the top plate (5); Multiple pressing mechanisms are installed at the bottom of the lifting frame (9). The pressing mechanism includes multiple second swing plates (22). The end of the second swing plate (22) is provided with a second abutting wheel (23). The second abutting wheel (23) is used to press the folded flap of the carton during the carton conveying process. In addition, multiple sets of centering abutment mechanisms are provided on the side of the side plate (4) near the sealing machine (1). The corresponding two sets of centering abutment mechanisms cooperate with each other. The centering abutment mechanism includes multiple first swing plates (11). The end of the first swing plate (11) is hinged with a first abutment wheel (12). The first abutment wheel (12) is used to abut against the side wall of the carton so as to automatically push it to the center position of the support frame (2) when the carton is conveyed.

2. The express parcel packaging auxiliary device according to claim 1, characterized in that, The central abutment mechanism further includes a first fixed rod (10) fixed to one side of the side plate (4), one end of the first swing plate (11) is rotatably sleeved on the outer wall of the first fixed rod (10); a first fixed plate (13) is provided at the end of the first swing plate (11) away from the first abutment wheel (12), and the first fixed plate (13) is fixedly connected to the first fixed rod (10); one side of the first fixed plate (13) is connected to the corresponding first swing plate (11) through a first spring (14), and the first spring (14) drives the first swing plate (11) to deflect toward the center of the support frame (2) so that the first abutment wheel (12) remains in contact with the side wall of the carton.

3. The express parcel packaging auxiliary device according to claim 1, characterized in that, The two side plates (4) are each fixed with a guide rail (7) on the side that is close to each other. The guide rail (7) is slidably connected to a slider (8), and the slider (8) is fixedly connected to the lifting frame (9).

4. The express parcel packaging auxiliary device according to claim 3, characterized in that, An electric push rod (6) is fixed to the top of the top plate (5). The push rod end of the electric push rod (6) is fixedly connected to the top of the lifting frame (9) to drive the lifting frame (9) to rise and fall along the guide rail (7).

5. The express parcel packaging auxiliary device according to claim 1, characterized in that, The pressing mechanism includes a second fixed frame (20) fixed to the bottom of the lifting frame (9), a second fixed rod (21) fixed to the bottom of the second fixed frame (20), and one end of the second swing plate (22) rotatably sleeved on the outer wall of the second fixed rod (21); a second fixed plate (25) is provided at the end of the second swing plate (22) away from the second abutment wheel (23), and the second fixed plate (25) is fixedly connected to the second fixed rod (21); one side of the second fixed plate (25) is connected to the corresponding second swing plate (22) through a second spring (26), and the second spring (26) drives the second swing plate (22) to deflect downward so that the second abutment wheel (23) maintains the pressing of the folding cover.

6. The express parcel packaging auxiliary device according to claim 5, characterized in that, The second abutment wheel (23) is mounted on the end of the second swing plate (22) via a one-way bearing (24), so that the second abutment wheel (23) can only rotate in one direction.

7. The express parcel packaging auxiliary device according to claim 1, characterized in that, The bottom of the lifting frame (9) is fixed with a first fixing frame (19), and a mounting frame (15) is provided below the first fixing frame (19). The mounting frame (15) is rotatably installed with a pressing roller (16) for pre-pressing the folding lid. The pressing roller (16) is located at the position of the lifting frame (9) near the feeding end of the carton sealing machine (1) to complete the pre-pressing of the carton with the contents folded.

8. The express parcel packaging auxiliary device according to claim 7, characterized in that, The top of the mounting frame (15) is fixed with a guide rod (18), the top end of the guide rod (18) slides through the first fixed frame (19), and the end is provided with a limiting block; both ends of the mounting frame (15) are fixedly installed with levers (17) to facilitate manual lifting of the pressing roller (16).

9. The express parcel packaging auxiliary device according to any one of claims 1 to 8, characterized in that, The top height of the conveying roller (3) is the same as the height of the roller shaft inside the sealing machine (1).

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