A carton sealing conveyor

Abstract

The application relates to the technical field of packaging machinery and discloses a packaging box sealing conveying equipment which comprises a rack, conveyors fixedly connected to the two ends of the rack, an adjusting mechanism, a sealing mechanism and a tape replacing mechanism, the adjusting mechanism comprises a lower sealing frame, an upper sealing frame, a bidirectional screw rod, a sliding sleeve and a limiting rod, the lower sealing frame is fixedly connected at the inner center of the rack, the bidirectional screw rod is rotationally connected at the inner center of the rack, the sliding sleeve is screwedly connected to the outer wall of the bidirectional screw rod, and the limiting rod is fixedly connected to the top of the sliding sleeve. The packaging box sealing conveying equipment automatically adjusts the clamping width and height through the adjusting mechanism, realizes flexible adhesion and compaction through the sealing mechanism, automatically overturns and unloads waste paper cores and translates and pushes new tapes for feeding through the tape replacing mechanism, the problems of frequent shutdown and inconvenient size adjustment are solved, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of construction engineering technology, specifically to a packaging box sealing and conveying device. Background Technology

[0002] In modern logistics and manufacturing processes, automatic sealing of packaging boxes is a crucial step. The efficiency of its conveying and sealing, as well as its operational stability, directly affect the rhythm of the entire production line. Existing packaging box sealing equipment typically uses conveyor belts on both sides to feed the packaging boxes into the equipment, and then the tape-applying mechanisms on the top and bottom attach tape to the seams of the packaging boxes to complete the sealing operation.

[0003] However, with the rapid development of the packaging industry, a single production line often needs to handle packaging boxes of various sizes and specifications. Existing sealing equipment exhibits significant inadequacy in handling this multi-specification mixed-line production scenario. When the size of the packaging box changes, operators often need to stop the machine to manually adjust the limit widths on both sides of the equipment and the height of the sealing frame above. This manual adjustment method is not only time-consuming and labor-intensive, but also difficult to guarantee accuracy. More importantly, since adhesive tape is a high-frequency consumable, it must be manually replaced after a roll is used up. The traditional replacement process requires first shutting down the conveyor, then manually disassembling the waste paper core and reinstalling a new roll of tape. During this period, the entire sealing conveyor line is at a standstill. This inability to adapt to size adjustments and frequent shutdowns for material changes completely disrupts the continuity of the production line, significantly reducing the overall sealing and conveying efficiency of the packaging boxes. To address this issue, this packaging box sealing conveyor provides a flexibly adjustable adaptable structure and an automatic tape replacement structure, thereby improving the practicality of the packaging box sealing conveyor. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a packaging box sealing conveyor, which solves the problems of existing packaging box sealing conveyors having difficulty in automatically adjusting the limiting width and sealing height according to the size of the packaging box, thus limiting their applicability, and requiring manual shutdown for replacement when the tape is exhausted, which seriously affects the continuous operation efficiency of the production line.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a packaging box sealing and conveying device, comprising a frame and a conveyor fixedly connected to both ends of the frame; It also includes an adjustment mechanism, a sealing mechanism, and a tape replacement mechanism; The adjustment mechanism includes a lower sealing frame, an upper sealing frame, a bidirectional screw, a sliding sleeve, and a limiting rod. The lower sealing frame is fixedly connected to the center of the machine frame. The bidirectional screw is rotatably connected to the inside of the machine frame. The sliding sleeve is threadedly connected to the outer wall of the bidirectional screw. The limiting rod is fixedly connected to the top of the sliding sleeve and slidably connected to the top of the machine frame. The sealing mechanism includes a conveyor belt, a first rotating frame, a transmission rod, a second rotating frame, a pressure roller, and a first spring. The conveyor belt is respectively disposed on both sides inside the upper sealing frame and the lower sealing frame. The first rotating frame and the second rotating frame are in two sets, and the two sets of the first rotating frame and the second rotating frame are respectively rotatably connected inside the lower sealing frame and the upper sealing frame. The transmission rod is rotatably connected between the first rotating frame and the second rotating frame. The pressure roller is rotatably connected to one side of the first rotating frame and the second rotating frame. The first spring is connected between the inner sidewall of the first rotating frame and the lower sealing frame. The tape replacement mechanism includes a support plate, a tape pulley, a counterweight ring, and a support block. The support plate is fixedly connected to the top of the upper sealing frame, the counterweight ring is slidably connected to the outer wall of the tape pulley, and the support block is slidably connected to the inside of the tape pulley.

[0006] Preferably, the adjustment mechanism further includes a second motor, a third transmission wheel, a second transmission belt, and a fourth transmission wheel. The second motor is fixedly connected to the bottom of the inner part of the frame. The third transmission wheel is connected to the output end of the second motor. The second transmission belt is sleeved on the outer wall of the third transmission wheel. The fourth transmission wheel is connected to the other end of the second transmission belt and to the end of the bidirectional screw.

[0007] Preferably, the adjusting mechanism further includes a fixed frame, a first motor, a second transmission wheel, a first transmission belt, a lead screw, and a slide cylinder. The fixed frame is fixedly connected to both sides of the outer periphery of the machine frame. The first motor is fixedly connected to the bottom of the fixed frame. The second transmission wheel is connected to the output end of the first motor. The first transmission belt is sleeved on the outer wall of the second transmission wheel. The first transmission wheel is connected to the other end of the first transmission belt and the first transmission wheel is connected to the bottom end of the lead screw. The lead screw is rotatably connected to both sides of the outer periphery of the machine frame. The slide cylinder is threadedly connected to the outer wall of the lead screw. The side of the upper sealing frame is fixedly connected to the side wall of the slide cylinder.

[0008] Preferably, the sealing mechanism further includes a guide wheel and a cutter, both of which are rotatably connected inside the upper sealing frame and the lower sealing frame.

[0009] Preferably, the packaging box sealing conveying device further includes a fixed block, a connecting frame, an electric push rod, a rotating block, and a folding plate. The fixed block and the connecting frame are both fixedly connected to the top of the upper sealing frame. The electric push rod is hinged inside the fixed block. The rotating block is rotatably connected inside the connecting frame. The output end of the electric push rod is hinged to the rotating block. The folding plate is fixedly connected to the bottom of the rotating block.

[0010] Preferably, the tape replacement mechanism further includes a third motor and a rotating plate. The third motor is fixedly connected to the side of the support plate, the rotating plate is connected to the output end of the third motor, and the tape pulley is rotatably connected to one side of the rotating plate.

[0011] Preferably, the tape changing mechanism further includes a second spring, which is connected between the support block and the inner bottom end of the tape pulley.

[0012] Preferably, the tape replacement mechanism further includes a collection bucket and a hook. The hook is fixed to the outer wall of the collection bucket, and a hanging groove is provided on one side of the support plate. The collection bucket is detachably connected to the support plate through the hook.

[0013] Preferably, the tape replacement mechanism further includes a support frame, a slide rail, a first cylinder, a slider, and a storage box. The support frame is fixedly connected to the top of the upper sealing frame. The first cylinder and the slide rail are both fixedly connected to the side of the support frame. The slider is connected to the output end of the first cylinder and slidably connected to the slide rail. The storage box is fixedly connected to the top of the slider.

[0014] Preferably, the tape replacement mechanism further includes a second cylinder and a push plate. The second cylinder is fixedly connected to the side of the support frame, and the push plate is connected to the output end of the second cylinder and slidably connected inside the storage frame.

[0015] Working Principle: When using this packaging box sealing and conveying equipment, the packaging boxes to be processed are smoothly introduced by the conveyors 2 on both sides of the frame 1. To adapt to the specific width of the packaging box, the second motor 10 at the bottom of the frame 1 is activated, causing the output end of the second motor 10 to drive the third transmission wheel 11, the second transmission belt 12, and the fourth transmission wheel 14 to rotate, thereby smoothly transmitting power and causing the bidirectional screw 13 to rotate inside the frame 1. When the bidirectional screw 13 rotates, it drives the sliding sleeve 15 connected to the outer wall thread to move synchronously towards the center. The sliding sleeve 15 drives the top limiting rod 16 to clamp and precisely limit the packaging box from both sides to prevent deviation. At the same time, to adapt to the height of the packaging box, the first motor 7 at the bottom of the fixing frame 3 is activated, which drives the second transmission wheel 8 and the first transmission wheel 14 to rotate. The conveyor belt 9 drives the first transmission wheel 6 and the lead screw 4 to rotate synchronously. The rotation of the lead screw 4 drives the slide cylinder 5 on the outer wall to move up and down, thereby precisely adjusting the height of the upper sealing frame 17 so that the upper sealing frame 17 fits against the top surface of the packaging box. When the packaging box is about to enter between the upper and lower sealing frames, the electric push rod 28 is activated to push the rotating block 30 to deflect within the connecting frame 29, causing the bottom folding plate 31 to move downward in an arc-shaped pressing action. The arc-shaped surface at the front end of the folding plate 31 smoothly presses the top of the packaging box to prevent subsequent sealing jams caused by tilting. Then the packaging box is clamped by the conveyor belt 19 and continues to be steadily conveyed forward. The tape passes around the guide wheel 20 and through the blade of the cutter 21. When the packaging box contacts the pressure roller 25, the pressure roller 25 is squeezed and moves backward, driving the first rotating wheel 25 to move backward. When the moving frame 22 deflects, the first rotating frame 22 synchronously pulls the second rotating frame 24 through the transmission rod 23, stretching the first spring 26. Under the strong rebound of the first spring 26, the pressure roller 25 presses the tape tightly onto the seam of the packaging box, completing the flexible bonding and avoiding damage to the box. After the sealing action is completed and the packaging box is removed, the cutter 21 cuts the tape. When the tape is exhausted and needs to be replaced automatically, the third motor 40 is started to drive the rotating plate 39 to rotate 180 degrees, flipping the unloaded tape pulley 41 to directly above the collection bin 42. At this time, the counterweight ring 44 on the outer wall of the tape pulley 41 falls downward under the action of gravity, thereby squeezing the support block 45 inside the tape pulley 41. The support block 45 is squeezed and overcomes the elastic force of the second spring 46, contracting inward to release the tension fixing force on the waste paper core, so that... The paper core falls unobstructed into the collection bin 42 for automatic recycling. Immediately afterwards, the third motor 40 reverses, causing the rotating plate 39 to reset. Then, the first cylinder 35 is activated to push the slider 36 along the slide rail 34 toward the belt pulley 41, moving the storage frame 37 containing the new tape to the outer periphery of the belt pulley 41 for initial enclosed contact. The second cylinder 38 is then activated to push the push plate 47 forward within the storage frame 37, precisely pushing the new tape roll toward the outer wall of the belt pulley 41. During the pushing of the new tape roll, the inner wall of the new roll presses against the inclined end of the support block 45, causing the support block 45 to temporarily contract. After the new tape roll is fully inserted into the predetermined position, the second spring 46 releases its elasticity again, pushing the support block 45 outward, thereby firmly fixing the new tape roll onto the belt pulley 41 and completing the automatic replacement and collection.

[0016] This invention provides a packaging box sealing and conveying device. It has the following beneficial effects: 1. This invention solves the problem that existing packaging box sealing equipment is unable to automatically adjust the limiting width and guide according to the size of the packaging box, thus limiting its applicable range, by setting a threaded engagement structure between the bidirectional screw and the sliding sleeve in the adjustment mechanism. This achieves the effect of automatic centering and precise conveying of packaging boxes of different specifications.

[0017] 2. This invention solves the problem that existing equipment is prone to hard contact that damages the packaging box or does not fit tightly when sealing and pressing by setting a four-bar synchronous mechanism formed by the first rotating frame, the second rotating frame and the transmission rod in the sealing mechanism and the flexible linkage with the first spring. It achieves the effect of providing flexible pressing force and greatly improving the adhesion of the tape sealing.

[0018] 3. By setting up a tape changing mechanism with tape wheel flipping, counterweight ring squeezing support block unloading, and cylinder pushing structure, this invention solves the problem that existing equipment must rely on manual shutdown for tape replacement when the tape is exhausted, which seriously affects the continuous operation efficiency of the production line. It achieves the effect of unmanned, non-stop automatic roll changing and significantly improves the overall sealing operation efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the conveyor structure of the present invention; Figure 3 This is a schematic diagram of the lead screw structure of the present invention; Figure 4 This is a schematic diagram of the bidirectional screw structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the lower sealing frame of the present invention; Figure 6 This is a schematic diagram of the top structure of the upper sealing frame of the present invention; Figure 7 This is a schematic diagram of the storage frame structure of the present invention; Figure 8 This is a schematic diagram of the support block structure of the present invention.

[0020] The components are as follows: 1. Frame; 2. Conveyor; 3. Fixed frame; 4. Lead screw; 5. Slide drum; 6. First transmission wheel; 7. First motor; 8. Second transmission wheel; 9. First transmission belt; 10. Second motor; 11. Third transmission wheel; 12. Second transmission belt; 13. Bidirectional screw; 14. Fourth transmission wheel; 15. Sliding sleeve; 16. Limiting rod; 17. Upper sealing frame; 18. Lower sealing frame; 19. Conveyor belt; 20. Guide pulley; 21. Cutter; 22. First rotating frame; 23. Transmission rod. 24. Second rotating frame; 25. Pressure roller; 26. First spring; 27. Fixing block; 28. Electric push rod; 29. ​​Connecting frame; 30. Rotating block; 31. Folding plate; 32. Support plate; 33. Support frame; 34. Slide rail; 35. First cylinder; 36. Slider; 37. Storage box; 38. Second cylinder; 39. Rotating plate; 40. Third motor; 41. Belt pulley; 42. Collection bucket; 43. Hook; 44. Counterweight ring; 45. Support block; 46. Second spring; 47. Push plate. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Please see the appendix Figure 1 - Appendix Figure 8 This invention provides a packaging box sealing and conveying device, including a frame 1 and a conveyor 2 fixedly connected to both ends of the frame 1. The frame 1 serves as a basic load-bearing structure, providing a stable installation platform for subsequent adjustment and sealing execution mechanisms. The conveyor 2 uses internally rotating conveying rollers to smoothly and uniformly guide the packaging boxes to be sealed into the feeding area and the unloading area.

[0023] The packaging box sealing and conveying equipment also includes an adjustment mechanism, a sealing mechanism, and a tape replacement mechanism. The adjustment mechanism mainly consists of a lower sealing frame 18, an upper sealing frame 17, a bidirectional screw 13, a sliding sleeve 15, and a limiting rod 16. The lower sealing frame 18 is fixedly connected to the center of the frame 1 as a bottom support and sealing reference. The bidirectional screw 13 is rotatably connected to the inside of the frame 1 to provide synchronous adjustment power in the horizontal direction. The sliding sleeve 15 is threadedly connected to the outer wall of the bidirectional screw 13, and the limiting rod 16 is fixedly connected to the top of the sliding sleeve 15. At the same time, the limiting rod 16 is slidably connected to the top of the frame 1 to ensure stability during translation and sliding. With the design of opposite rotation directions at both ends of the bidirectional screw 13, the sliding sleeves 15 on both sides can be driven to move closer or further away synchronously, thereby driving the limiting rod 16 to center and guide the incoming packaging box.

[0024] The sealing mechanism includes a conveyor belt 19, a first rotating frame 22, a transmission rod 23, a second rotating frame 24, a pressure roller 25, and a first spring 26. The conveyor belt 19 is respectively installed on both sides inside the upper sealing frame 17 and the lower sealing frame 18 to clamp the upper and lower edges of the packaging box and provide strong forward conveying power. The first rotating frame 22 and the second rotating frame 24 are two sets, which are rotatably connected inside the lower sealing frame 18 and the upper sealing frame 17, respectively. The two ends of the transmission rod 23 are rotatably connected between the first rotating frame 22 and the second rotating frame 24 to form a four-bar linkage synchronous mechanism. The pressure roller 25 is rotatably connected to the sides of the first rotating frame 22 and the second rotating frame 24 to directly contact and roll the tape. The first spring 26 is connected between the inner sidewall of the first rotating frame 22 and the lower sealing frame 18 to provide flexible pressing and restoring elasticity. The tape changing mechanism is responsible for realizing unmanned roll changing operation without stopping the machine.

[0025] The tape changing mechanism includes a support plate 32, a tape pulley 41, a counterweight ring 44, and a support block 45. The support plate 32 is fixedly connected to the top of the upper sealing frame 17 as a rigid support base for the material changing action. The counterweight ring 44 is slidably connected to the outer wall of the tape pulley 41, and the support block 45 is slidably connected to the inside of the tape pulley 41. Under the action of gravity, the counterweight ring 44 falls freely and squeezes the support block 45, thereby realizing the automatic unlocking and release of the waste paper core. This modular and collaborative design adjustment mechanism can realize the centered clamping of the width and the adaptive adjustment of the height. The linkage and spring linkage in the sealing mechanism greatly improve the sealing fit and effectively prevent hard contact from damaging the packaging box. The tape changing mechanism completely eliminates manual intervention and realizes automated unloading.

[0026] Based on the above embodiments, the present invention also includes the following preferred technical solutions: In a preferred embodiment, to provide a stable and synchronized width limiting power source, the adjustment mechanism further includes a second motor 10, a third transmission wheel 11, a second transmission belt 12, and a fourth transmission wheel 14. The second motor 10 is fixedly connected to the bottom of the inner part of the frame 1. The third transmission wheel 11 is coaxially connected to the output end of the second motor 10. The second transmission belt 12 is sleeved on the outer wall of the third transmission wheel 11. The fourth transmission wheel 14 is connected to the other end of the second transmission belt 12 and is fixedly connected to the end of the bidirectional screw 13. By using the second motor 10 as the power source and transmitting torque smoothly to the bidirectional screw 13 via belt drive, the high consistency of the movement of the limiting rods 16 on both sides can be ensured.

[0027] In a preferred embodiment, to accurately and smoothly control the height of the upper sealing frame 17 to accommodate packaging boxes of different sizes, the adjustment mechanism also includes a fixed frame 3, a first motor 7, a second transmission wheel 8, a first transmission belt 9, a first transmission wheel 6, a lead screw 4, and a slide cylinder 5. The fixed frame 3 is fixedly connected to both sides of the outer periphery of the frame 1 to expand the installation space outward. The first motor 7 is fixedly connected to the bottom of the fixed frame 3. The second transmission wheel 8 is connected to the output end of the first motor 7. The first transmission belt 9 is tensioned and fitted onto the outer wall of the second transmission wheel 8. The first transmission wheel 6 is connected to the other end of the first transmission belt 9 and to the bottom end of the lead screw 4. The lead screw 4 is rotatably connected to both sides of the outer periphery of the frame 1 in a vertical direction. The slide cylinder 5 is threadedly connected to the outer wall of the lead screw 4. The side of the upper sealing frame 17 is fixedly connected to the side wall of the slide cylinder 5. By driving the lead screws 4 on both sides to rotate synchronously with the first motor 7, the rotational motion is smoothly converted into the vertical linear motion of the slide cylinder 5, ensuring the absolute horizontal state of the upper sealing frame 17 during the lifting process.

[0028] In a preferred embodiment, in order to accurately guide the tape path and complete a clean cutting action, the sealing mechanism also includes a guide roller 20 and a cutter 21. The guide roller 20 and the cutter 21 are rotatably connected inside the upper sealing frame 17 and the lower sealing frame 18. Multiple sets of guide rollers 20 are staggered to form a tape transmission path with appropriate tension. The cutter 21 is reasonably arranged behind the pressure roller 25 so that after sealing and compaction, the tape can be cut by the inertia of the moving packaging box. This is achieved using existing technology in the field, which will not be described in detail here.

[0029] In a preferred embodiment, in order to flatten the front panel of the packaging box before the sealing action to prevent the panel from warping and causing jamming or sealing deviation, the packaging box sealing conveying device also includes a fixed block 27, a connecting frame 29, an electric push rod 28, a rotating block 30, and a folding plate 31. The fixed block 27 and the connecting frame 29 are both fixedly connected to the top of the feed end of the upper sealing frame 17. The tail of the electric push rod 28 is hinged inside the fixed block 27. The rotating block 30 is rotatably connected inside the connecting frame 29. The output end of the electric push rod 28 is eccentrically hinged to the rotating block 30. The folding plate 31 is fixedly connected to the bottom of the rotating block 30. The linear extension and retraction of the electric push rod 28 drives the rotating block 30 to deflect, thereby allowing the folding plate 31 with the arc guide to perform a pre-pressing folding action.

[0030] In a preferred embodiment, in order to achieve the flipping of the belt pulley 41 and thus accurately switch to the unloading position, the belt changing mechanism also includes a third motor 40 and a rotating plate 39. The third motor 40 is fixedly connected to the side of the support plate 32, the rotating plate 39 is connected to the output end of the third motor 40, and the belt pulley 41 is rotatably connected to the side of the rotating plate 39. The third motor 40 can drive the rotating plate 39 to rotate 180 degrees so that the belt pulley 41 is suspended downwards, thereby providing the necessary positional basis for automatic unloading by gravity.

[0031] As a preferred embodiment, in order to enable the support block 45 to have an elastic tensioning function so as to firmly fix the tape roll in the working state, the tape changing mechanism also includes a second spring 46. The second spring 46 is connected between the support block 45 and the inner bottom of the tape pulley 41. Under normal conditions, the second spring 46 continuously pushes the support block 45 to protrude outward and press against the inner wall of the tape roll, while it can be smoothly compressed and retracted into the interior when unloading is under pressure.

[0032] As a preferred embodiment, in order to collect waste paper cores in a centralized manner and keep the workshop working environment clean, the tape replacement mechanism also includes a collection bucket 42 and a hook 43. The hook 43 is fixed to the outer wall of the collection bucket 42, and the side of the support plate 32 is machined with a suitable hanging groove. The collection bucket 42 is detachably connected to the support plate 32 through the hook 43, which greatly facilitates the staff to regularly remove and dump the waste.

[0033] In a preferred embodiment, to achieve automatic translation and precise feeding of new tape rolls, the tape changing mechanism further includes a support frame 33, a slide rail 34, a first cylinder 35, a slider 36, a storage box 37, a second cylinder 38, and a push plate 47. The support frame 33 is vertically fixed to the top of the upper sealing frame 17. The first cylinder 35 and the slide rail 34 are both horizontally fixed to the side of the support frame 33. The slider 36 is connected to the output end of the first cylinder 35 and slidably connected to the slide rail 34. The storage box 37 is fixedly connected to the top of the slider 36 for pre-storing new tape. The second cylinder 38 is fixedly connected to the side of the support frame 33. The push plate 47 is connected to the output end of the second cylinder 38 and slidably connected inside the storage box 37. The first cylinder 35 is responsible for moving the storage box 37 to the position directly in front of the tape pulley 41. The second cylinder 38 then pushes the push plate 47 to move the new tape roll horizontally and squeeze it into the outside of the tape pulley 41 to complete the relay feeding.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A packaging box sealing and conveying device, comprising a frame (1) and a conveyor (2) fixedly connected to both ends of the frame (1); Its features are, It also includes an adjustment mechanism, a sealing mechanism, and a tape replacement mechanism; The adjustment mechanism includes a lower sealing frame (18), an upper sealing frame (17), a bidirectional screw (13), a sliding sleeve (15), and a limiting rod (16). The lower sealing frame (18) is fixedly connected to the center of the machine frame (1). The bidirectional screw (13) is rotatably connected to the inside of the machine frame (1). The sliding sleeve (15) is threadedly connected to the outer wall of the bidirectional screw (13). The limiting rod (16) is fixedly connected to the top of the sliding sleeve (15) and slidably connected to the top of the machine frame (1). The sealing mechanism includes a conveyor belt (19), a first rotating frame (22), a transmission rod (23), a second rotating frame (24), a pressure roller (25), and a first spring (26). The conveyor belt (19) is respectively disposed on both sides of the interior of the upper sealing frame (17) and the lower sealing frame (18). The first rotating frame (22) and the second rotating frame (24) are two sets. The two sets of the first rotating frame (22) and the second rotating frame (24) are respectively rotatably connected inside the lower sealing frame (18) and the upper sealing frame (17). The transmission rod (23) is rotatably connected between the first rotating frame (22) and the second rotating frame (24). The pressure roller (25) is rotatably connected to one side of the first rotating frame (22) and the second rotating frame (24). The first spring (26) is connected between the first rotating frame (22) and the interior sidewall of the lower sealing frame (18). The tape replacement mechanism includes a support plate (32), a tape pulley (41), a counterweight ring (44), and a support block (45). The support plate (32) is fixedly connected to the top of the upper sealing frame (17), the counterweight ring (44) is slidably connected to the outer wall of the tape pulley (41), and the support block (45) is slidably connected to the inside of the tape pulley (41).

2. The packaging box sealing and conveying device according to claim 1, characterized in that, The adjustment mechanism further includes a second motor (10), a third transmission wheel (11), a second transmission belt (12), and a fourth transmission wheel (14). The second motor (10) is fixedly connected to the bottom of the inner part of the frame (1). The third transmission wheel (11) is connected to the output end of the second motor (10). The second transmission belt (12) is sleeved on the outer wall of the third transmission wheel (11). The fourth transmission wheel (14) is connected to the other end of the second transmission belt (12) and is connected to the end of the bidirectional screw (13).

3. The packaging box sealing and conveying device according to claim 1, characterized in that, The adjustment mechanism further includes a fixed frame (3), a first motor (7), a second transmission wheel (8), a first transmission belt (9), a first transmission wheel (6), a lead screw (4), and a slide cylinder (5). The fixed frame (3) is fixedly connected to both sides of the outer periphery of the frame (1). The first motor (7) is fixedly connected to the bottom of the fixed frame (3). The second transmission wheel (8) is connected to the output end of the first motor (7). The first transmission belt (9) is sleeved on the outer wall of the second transmission wheel (8). The first transmission wheel (6) is connected to the other end of the first transmission belt (9) and the first transmission wheel (6) is connected to the bottom end of the lead screw (4). The lead screw (4) is rotatably connected to both sides of the outer periphery of the frame (1). The slide cylinder (5) is threadedly connected to the outer wall of the lead screw (4). The side of the upper sealing frame (17) is fixedly connected to the side wall of the slide cylinder (5).

4. The packaging box sealing and conveying device according to claim 1, characterized in that, The sealing mechanism also includes a guide wheel (20) and a cutter (21), both of which are rotatably connected inside the upper sealing frame (17) and the lower sealing frame (18).

5. The packaging box sealing and conveying device according to claim 1, characterized in that, The packaging box sealing conveying device also includes a fixed block (27), a connecting frame (29), an electric push rod (28), a rotating block (30), and a folding plate (31). The fixed block (27) and the connecting frame (29) are both fixedly connected to the top of the upper sealing frame (17). The electric push rod (28) is hinged inside the fixed block (27). The rotating block (30) is rotatably connected inside the connecting frame (29). The output end of the electric push rod (28) is hinged to the rotating block (30). The folding plate (31) is fixedly connected to the bottom of the rotating block (30).

6. The packaging box sealing and conveying device according to claim 1, characterized in that, The tape replacement mechanism also includes a third motor (40) and a rotating plate (39). The third motor (40) is fixedly connected to the side of the support plate (32), the rotating plate (39) is connected to the output end of the third motor (40), and the tape pulley (41) is rotatably connected to one side of the rotating plate (39).

7. The packaging box sealing and conveying device according to claim 1, characterized in that, The tape changing mechanism also includes a second spring (46) connected between the support block (45) and the inner bottom end of the tape pulley (41).

8. The packaging box sealing and conveying device according to claim 1, characterized in that, The tape replacement mechanism also includes a collection bucket (42) and a hook (43). The hook (43) is fixed to the outer wall of the collection bucket (42). A hanging groove is provided on one side of the support plate (32). The collection bucket (42) is detachably connected to the support plate (32) through the hook (43).

9. A packaging box sealing and conveying device according to claim 1, characterized in that, The tape replacement mechanism also includes a support frame (33), a slide rail (34), a first cylinder (35), a slider (36), and a storage box (37). The support frame (33) is fixedly connected to the top of the upper sealing frame (17). The first cylinder (35) and the slide rail (34) are both fixedly connected to the side of the support frame (33). The slider (36) is connected to the output end of the first cylinder (35) and slidably connected to the slide rail (34). The storage box (37) is fixedly connected to the top of the slider (36).

10. A packaging box sealing and conveying device according to claim 9, characterized in that, The tape replacement mechanism also includes a second cylinder (38) and a push plate (47). The second cylinder (38) is fixedly connected to the side of the support frame (33), and the push plate (47) is connected to the output end of the second cylinder (38) and slidably connected inside the storage frame (37).

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