Simple fastening mechanism for a packaging carton

Abstract

The utility model discloses a simple and quick buckling mechanism of packing carton relates to paper box processing technical field, including frame, the top of frame is provided with L type spare, the bottom symmetry fixed mounting of L type spare has two stand, the other end of stand is provided with liquid storage tank, the bottom of liquid storage tank is provided with guide piece, two the guide piece is inclined setting, and presents " eight " character shape, two the guide piece opposite side along horizontal direction all has set up mounting groove, the utility model discloses through two inclined guide piece and the cooperation of multiple gyro wheel, can when making it autorotation when packing carton hits gyro wheel, make packing carton along the direction of guide piece inclination adjustment position simultaneously, can change rolling friction for sliding friction between packing carton and guide piece, has reduced friction, thereby is helpful to solve the problem that packing carton appears to dump, and it is convenient to buckle and seal cover.

Description

Technical Field

[0001] This utility model relates to the field of paper box processing technology, specifically a simple fastening mechanism for packaging paper boxes. Background Technology

[0002] As one of the most core packaging forms in modern commodity circulation, packaging paper boxes are widely used in various fields due to their environmental friendliness, multifunctionality and economy. After the packaging paper boxes are produced, a fastening mechanism is used to fasten the lids onto the packaging paper boxes. Specifically, when in use, the packaging paper boxes are placed on a conveyor, and then the equipment automatically fastens the lids onto the packaging paper boxes one by one.

[0003] In order to improve the fastening and sealing effect, traditional packaging carton fastening mechanisms usually have the lid-removing structure and the lid-sealing structure installed at the center of the device. They work with a guide structure to bring the packaging carton into contact and slide it along the guide structure to the center of the conveyor belt. This ensures that the packaging carton is on the same horizontal line as the lid-removing and lid-sealing structures, thus facilitating the fastening and sealing of the packaging carton.

[0004] Although the existing packaging box fastening mechanism is convenient to use, it still has some drawbacks: for example, the guide structure on the packaging box fastening mechanism will generate sliding friction when it comes into contact with the packaging box. If the guide structure or the surface of the packaging box is relatively rough, the friction will be greater, which will make the packaging box easy to tip over during the guiding and conveying process, thus affecting the fastening and sealing effect.

[0005] To address this issue, we designed a simple fastening mechanism for packaging boxes. Utility Model Content

[0006] The purpose of this utility model is to provide a simple fastening mechanism for packaging paper boxes to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides a simple fastening mechanism for packaging paper boxes, including a frame. An L-shaped component is provided on the top of the frame. Two columns are symmetrically fixedly installed on the bottom of the L-shaped component. A liquid storage tank is provided at the other end of the columns. A guide component is provided at the bottom of the liquid storage tank. The two guide components are inclined and in a figure-eight shape. An installation groove is opened on the opposite side of the two guide components along the horizontal direction. Multiple rollers are rotatably arranged at equal intervals in the installation grooves. Parts of the rollers are located outside the installation grooves.

[0008] Furthermore, the liquid storage tank contains lubricating fluid, and an infusion tube is fixedly inserted into the bottom of one side of the liquid storage tank. The other end of the infusion tube extends into the mounting groove and is provided with an application groove. One side of the application groove has an arc-shaped opening with a curvature corresponding to the roller and abutting against the outer surface of the roller. The number of infusion tubes and application grooves corresponds to the number of rollers.

[0009] Furthermore, a rotating shaft is rotatably provided in the guide member along the vertical direction. The number of rotating shafts corresponds to the number of rollers, and the rollers are fixedly sleeved on the rotating shafts. Multiple limiting grooves are conveniently opened in the bottom wall of the mounting groove along the horizontal direction. A slider is slidably inserted into the limiting groove. A bearing is fixedly installed on the top of the slider. The bottom end of the rotating shaft is fixedly inserted into the inner ring of the bearing. The top of the rotating shaft abuts against the top wall of the mounting groove. A damping cylinder and a buffer spring are provided between the slider and the inner side wall of the limiting groove. The damping cylinder is movably sleeved on the buffer spring.

[0010] Furthermore, a first spring and a first telescopic rod are provided between the inner wall of the mounting groove and the coating groove. The first spring is movably sleeved on the first telescopic rod. A drainage tube is fixedly inserted into the center of one side of the coating groove, and the other end of the drainage tube is slidably inserted into the inner ring of the infusion tube away from the storage tank.

[0011] Furthermore, a second spring is fixedly installed on the top wall of the liquid storage tank, and a slider is provided at the other end of the second spring. A piston is provided at the bottom of the slider, and the piston is slidably connected inside the liquid storage tank.

[0012] Furthermore, there are two second springs, and the two second springs are symmetrically fixedly installed between the top wall of the liquid storage tank and the sliding component.

[0013] Furthermore, a second telescopic rod is provided between the top wall of the liquid storage tank and the sliding member. The number of the second telescopic rods corresponds to the number of the second springs, and the second springs are movably sleeved on the second telescopic rods.

[0014] Furthermore, a liquid injection pipe connected to the interior is fixedly inserted into one side of the liquid storage tank, and a one-way liquid inlet valve is provided on the liquid injection pipe.

[0015] Furthermore, it also includes a conveying assembly for conveying packaging cartons. The top of the frame has a fixed groove in the horizontal direction. The conveying assembly includes a belt, a motor and two rotating rollers. The two rotating rollers are symmetrically arranged at both ends of the fixed groove in the horizontal direction. The belt is tensioned and sleeved on the two rotating rollers. The motor is fixedly installed on the front side of the frame, and the drive shaft of the motor is connected to one end of one of the rotating rollers.

[0016] Furthermore, it also includes an operating component for removing and sealing the packaging carton. The operating component includes an L-shaped frame, which is fixedly installed at the rear end of the top of the machine frame. A guide groove is provided at one end of the bottom center of the L-shaped frame in a horizontal direction. A sliding block is slidably inserted into the guide groove. A hydraulic cylinder is provided at the bottom of the sliding block. A gripper is provided at the driving end of the hydraulic cylinder. A cylinder is provided on one side of the guide groove. The driving end of the cylinder extends into the guide groove and is fixedly connected to one side of the sliding block. A storage trough is provided on the front side of the L-shaped frame. The storage trough stores a large number of caps, with the cap openings facing downwards.

[0017] Compared with the prior art, the beneficial effects of this utility model are: by cooperating with two inclined guides and multiple rollers, the packaging box can rotate when it hits the rollers, and at the same time, the packaging box can be adjusted in position along the inclined direction of the guides. The sliding friction between the packaging box and the guides can be changed to rolling friction, which reduces the friction force and helps to solve the problem of the packaging box tipping over, making it easier to fasten and seal it.

[0018] Compared with the prior art, the beneficial effects of this utility model are: by combining the infusion tube and the application tank, the lubricant stored in the storage tank can be injected into the application tank. Then, the arc-shaped opening at one end of the application tank will spread the lubricant evenly as the roller rotates. At this time, the lubricant forms an oil film on the surface of the roller, which can further reduce the friction between the roller and the packaging box, thereby further reducing the problem of relative friction and tipping of the packaging box.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the elastic force of the first spring can make the coating groove always just abut against the outer surface of the roller, which can improve the sealing between the coating groove and the roller, thereby avoiding the problem of lubricant leakage.

[0020] Compared with the prior art, the beneficial effects of this utility model are: the elastic force of the second spring can push the slider and piston to move downward, which can actively squeeze the lubricant below into the infusion tube, thereby actively applying lubricant to the roller and ensuring the continuous existence of the oil film on the roller. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the exterior front of this utility model; Figure 2 This is a three-dimensional structural diagram of the exterior of the back of this utility model; Figure 3 This is a three-dimensional structural diagram of the side of the guide component of this utility model; Figure 4 This is a top view and a semi-sectional view of the internal structure of the guide component of this utility model; Figure 5This is a three-dimensional structural diagram showing a half-section of the interior of the liquid storage tank of this utility model; Figure 6 This utility model Figure 4 Enlarged view of point A in the middle; Figure 7 This utility model Figure 5 Enlarged view of point A in the middle; Figure 8 This is a three-dimensional structural diagram of the guide component of this utility model, shown in a frontal half-sectional view of its internal structure. Figure 9 This utility model Figure 8 Enlarged view of point C in the middle.

[0022] In the diagram: 1. Frame; 2. L-shaped component; 3. Column; 4. Liquid storage tank; 5. Guide component; 6. Mounting groove; 7. Roller; 8. Infusion pipe; 9. Application groove; 10. Rotating shaft; 11. First spring; 12. First telescopic rod; 13. Second spring; 14. Sliding component; 15. Piston; 16. Second telescopic rod; 17. One-way inlet valve; 18. Injection pipe; 19. Fixing groove; 20. Rotating roller; 21. Belt; 22. Motor; 23. L-shaped frame; 26. Guide groove; 27. Sliding block; 28. Hydraulic cylinder; 29. ​​Drainage pipe; 30. Limiting groove; 31. Slider; 32. Damping cylinder; 33. Buffer spring; 34. Bearing; 35. Gripper; 36. Cylinder; 37. Material storage tank. Detailed Implementation

[0023] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-9 This utility model provides a technical solution: a simple fastening mechanism for packaging paper boxes, including a frame 1, an L-shaped part 2 is provided on the top of the frame 1, two columns 3 are symmetrically fixedly installed on the bottom of the L-shaped part 2, a liquid storage tank 4 is provided at the other end of the column 3, a guide 5 is provided at the bottom of the liquid storage tank 4, the two guides 5 are inclined and in the shape of "eight", and an installation groove 6 is opened on the opposite side of the two guides 5 along the horizontal direction. Multiple rollers 7 are rotatably arranged at equal intervals in the installation groove 6, and part of the rollers 7 is located outside the installation groove 6. It also includes a conveying assembly for conveying packaging cartons. The top of the frame 1 has a fixed groove 19 in the horizontal direction. The conveying assembly includes a belt 21, a motor 22 and two rotating rollers 20. The two rotating rollers 20 are symmetrically arranged in the fixed groove 19 at both ends in the horizontal direction. The belt 21 is tensioned and sleeved on the two rotating rollers 20. The motor 22 is fixedly installed on the front side of the frame 1, and the drive shaft of the motor 22 is connected to one end of one of the rotating rollers 20. It also includes an operating component for sealing packaging cartons. The operating component includes an L-shaped frame 23, which is fixedly installed at the rear end of the top of the frame 1. A guide groove 26 is provided at one end of the bottom center of the L-shaped frame 23 in a horizontal direction. A sliding block 27 is slidably inserted into the guide groove 26. A hydraulic cylinder 28 is provided at the bottom of the sliding block 27. A gripper 35 is provided at the driving end of the hydraulic cylinder 28. A cylinder 36 is provided on one side of the guide groove 26. The driving end of the cylinder 36 extends into the guide groove 26 and is fixedly connected to one side of the sliding block 27. A storage trough 37 is provided on the front side of the L-shaped frame 23. The storage trough 37 stores a large number of lids, and the lid openings face downwards.

[0025] In practice, personnel place multiple packaging boxes with lids to be fastened at any position on the top of the belt 21, and then turn on the motor 22, which drives one of the rotating rollers 20 to rotate, so that the belt 21 moves on the two rotating rollers 20 and conveys multiple packaging boxes. During the above process, the packaging box will impact the guide 5 and the roller 7, causing the packaging box to rotate within the mounting groove 6 due to the impact inertia. At the same time, the packaging box can be adjusted in the direction of the tilt of the guide 5 until it passes between the two guides 5. At this time, the packaging box is located at the center of the top of the belt 21, which can change the sliding friction between the packaging box and the guide 5 into rolling friction, reducing the friction force. This helps to solve the problem of the packaging box tipping over and makes it easier to fasten and seal it. As the packaging box continues to move, the cylinder 36 is activated, which shortens the drive end of the cylinder 36, causing the sliding block 27 and the gripper 35 to move above the storage tank 37. Then, the gripper 35 is used to grab one of the covers in the storage tank 37. Following the principle, the gripper 35 and the cover are aligned with the packaging box. Finally, the hydraulic cylinder 28 is activated, which extends the drive end of the hydraulic cylinder 28 to close the cover on the packaging box. This facilitates the sealing of the packaging box and reduces the workload of personnel.

[0026] It should be noted here that, in order to ensure that the gripper 35 and the packaging carton are on the same vertical line, an infrared sensor can be installed at a suitable position on the L-shaped frame 23. The infrared sensor and the rightmost end of the hydraulic cylinder 28 are installed on the same front and back vertical line. Then, the infrared sensor is electrically connected to the hydraulic cylinder 28 and the motor 22, which can easily control the fixed position of the packaging carton. Since the infrared sensor is existing technology and is not a problem that needs to be solved in the background technology of this specification, it will not be elaborated on further.

[0027] See Figure 1-9 The reservoir 4 contains lubricating fluid. An infusion tube 8 is fixedly inserted into the bottom of one side of the reservoir 4. The other end of the infusion tube 8 extends into the mounting groove 6 and is provided with an application groove 9. An arc-shaped opening is provided on one side of the application groove 9, and the curvature corresponds to that of the roller 7 and abuts against the outer surface of the roller 7. The number of infusion tubes 8 and application grooves 9 are both corresponding to the number of rollers 7.

[0028] In specific implementation, based on the above implementation, the lubricant stored in the liquid storage tank 4 will be injected into the application tank 9 through the infusion tube 8. Then, the arc-shaped opening at one end of the application tank 9 will spread the lubricant evenly as the roller 7 rotates. At this time, the lubricant forms an oil film on the surface of the roller 7, which can further reduce the friction between the roller 7 and the packaging box, thereby further reducing the problem of relative friction and tipping of the packaging box.

[0029] See Figure 1-9 A rotating shaft 10 is rotatably mounted vertically inside the guide member 5. The number of rotating shafts 10 corresponds to the number of rollers 7, and the rollers 7 are fixedly sleeved on the rotating shafts 10. This facilitates the rotational installation of the rollers 7 in the mounting groove 6 and avoids motion interference problems.

[0030] See Figure 1-9 A first spring 11 and a first telescopic rod 12 are provided between the inner wall of the installation groove 6 and the application groove 9. The first spring 11 is movably sleeved on the first telescopic rod 12. A drainage tube 29 is fixedly inserted into the center of one side of the application groove 9. The other end of the drainage tube 29 is slidably inserted into the inner ring of the infusion tube 8 at the end away from the storage tank 4.

[0031] In specific implementation, based on the above implementation, the elastic force of the first spring 11 can make the coating groove 9 move along the direction of the extension end of the first telescopic rod 12, so that the coating groove 9 always just abuts against the outer surface of the roller 7, which can improve the sealing between the coating groove 9 and the roller 7, thereby avoiding the problem of lubricant leakage. In addition, the force between the coating groove 9 and the roller 7 will not affect the normal rotation of the roller 7 when it is under force.

[0032] See Figure 1-9A second spring 13 is fixedly installed on the top wall of the liquid storage tank 4. A slider 14 is provided at the other end of the second spring 13. A piston 15 is provided at the bottom of the slider 14. The piston 15 is slidably connected inside the liquid storage tank 4.

[0033] In specific implementation, based on the above implementation, the elastic force of the second spring 13 can push the slide 14 and piston 15 to move downward in the liquid storage tank 4, which can actively squeeze the lubricant below into the infusion tube 8, thereby actively applying lubricant to the roller 7 and ensuring the continuous existence of the oil film on the roller 7.

[0034] See Figure 1-9 There are two second springs 13, and the two second springs 13 are symmetrically fixedly installed between the top wall of the liquid storage tank 4 and the slide member 14. The arrangement of two second springs 13 can ensure that the two ends of the top of the slide member 14 are subjected to balanced forces, thereby avoiding the problem of tilting during movement.

[0035] See Figure 1-9 A second telescopic rod 16 is also provided between the top wall of the liquid storage tank 4 and the sliding member 14. The number of second telescopic rods 16 corresponds to the number of second springs 13, and the second springs 13 are movably sleeved on the second telescopic rods 16. This allows the sliding member 14 to move only along the direction of the telescopic end of the second telescopic rod 16, thereby avoiding the problem of movement deviation.

[0036] See Figure 1-9 A liquid injection pipe 18, which communicates with the interior, is fixedly inserted into one side of the liquid storage tank 4. A one-way liquid inlet valve 17 is provided on the liquid injection pipe 18. This allows for convenient filling of the liquid storage tank 4 with lubricating fluid, ensuring the continuous and normal operation of the device.

[0037] See Figure 1-9 Multiple limiting grooves 30 are conveniently opened along the horizontal direction on the bottom wall of the mounting groove 6. A slider 31 is slidably inserted into the limiting groove 30. A bearing 34 is fixedly installed on the top of the slider 31. The bottom end of the rotating shaft 10 is fixedly inserted into the inner ring of the bearing 34. The top of the rotating shaft 10 abuts against the top wall of the mounting groove 6. A damping cylinder 32 and a buffer spring 33 are provided between the slider 31 and the inner side wall of the limiting groove 30. The damping cylinder 32 is movably sleeved on the buffer spring 33.

[0038] In specific implementation, based on the above implementation, when the packaging box to be closed hits the outer surface of the roller 7, the roller 7 will be forced to slide the slider 31 in the limiting groove 30 and compress the buffer spring 33. After the impact force is absorbed, the slider 31 can be slowly reset in the limiting groove 30 in conjunction with the damping cylinder 32. This can effectively solve the problem of the packaging box rebounding when it hits the roller 7, thereby further preventing the packaging box from tipping over.

[0039] Before use, all electrical appliances involved in the packaging box fastening mechanism need to be connected to an external power source, or a battery pack needs to be installed in an area outside the frame 1 that does not obstruct other components. Then, the battery pack and electrical appliances are connected by wiring. It is also necessary to avoid the wiring from getting tangled due to the movement of the components. Wiring needs to be buried and planned and organized to provide power to the electrical appliances, thereby ensuring the normal operation and switching of the electrical appliances. Since connecting the electrical appliances to an external power source or setting up a battery pack for power supply are existing technologies and are not problems that need to be solved in the background technology of this manual, they will not be explained in detail.

[0040] Working principle: In use, the operator places multiple packaging boxes with lids to be fastened at any position on the top of the belt 21. Then, the motor 22 is turned on, which drives one of the rotating rollers 20 to rotate. This causes the belt 21 to move on the two rotating rollers 20 and convey the multiple packaging boxes to be placed. During this process, the packaging boxes will impact the guide 5 and the rollers 7. Due to the impact inertia, the packaging boxes will cause the rollers 7 to rotate in the mounting groove 6. At the same time, the packaging boxes can be adjusted in the direction of the tilt of the guide 5 until they pass between the two guide 5. At this time, the packaging boxes are located at the center of the top of the belt 21. The sliding friction between the packaging boxes and the guide 5 can be changed to rolling friction, which reduces the friction force and helps to solve the problem of the packaging boxes tipping over, making it easier to fasten and seal them.

[0041] It should be noted that because roller 7 is relatively high, the entire packaging carton can contact roller 7, avoiding the problem of loss of balance and tipping over when the impact point is applied to a certain part of roller 7, which can further improve the stability of roller 7 during conveying.

[0042] In addition, during the above operation, the lubricant stored in the storage tank 4 will be injected into the application tank 9 through the infusion tube 8. Then, the arc-shaped opening at one end of the application tank 9 will spread the lubricant evenly as the roller 7 rotates. At this time, the lubricant forms an oil film on the surface of the roller 7, which can further reduce the friction between the roller 7 and the packaging box, thereby further reducing the problem of relative friction and tipping of the packaging box.

[0043] The force of the first spring 11 allows the coating groove 9 to move along the direction of the extension end of the first telescopic rod 12, so that the coating groove 9 always rests precisely against the outer surface of the roller 7, which can improve the sealing between the coating groove 9 and the roller 7, thereby avoiding the problem of lubricant leakage. In addition, the force between the coating groove 9 and the roller 7 will not affect the normal rotation of the roller 7 when it is under force.

[0044] The second spring 13 can push the slide 14 and piston 15 to move downward in the reservoir 4 along the direction of the extension end of the second telescopic rod 16, which can actively squeeze the lubricant below into the infusion tube 8, thereby actively applying lubricant to the roller 7 and ensuring the continuous existence of the oil film on the roller 7.

[0045] In addition, based on the above operation, it should be noted that when the packaging box to be placed hits the outer surface of the roller 7, the roller 7 will be forced to slide the slider 31 in the limiting groove 30 and compress the buffer spring 33. After the impact force is absorbed, the slider 31 can be slowly reset in the limiting groove 30 in conjunction with the damping cylinder 32. This can effectively solve the problem of the packaging box rebounding when it hits the roller 7, thereby further preventing the packaging box from tipping over.

[0046] Finally, as the packaging box continues to move, the cylinder 36 is activated, which shortens the drive end of the cylinder 36, causing the sliding block 27 and the gripper 35 to move above the storage tank 37. Then, the gripper 35 is used to grab one of the covers in the storage tank 37. Following the principle, the gripper 35 and the cover are aligned with the packaging box. Finally, the hydraulic cylinder 28 is activated, which extends the drive end of the hydraulic cylinder 28 to close the cover on the packaging box. This facilitates the sealing of the packaging box and reduces the workload of personnel.

Claims

1. A simple fastening mechanism for packaging paper boxes, comprising a frame (1), characterized in that, The top of the frame (1) is provided with an L-shaped part (2), and two columns (3) are symmetrically fixedly installed at the bottom of the L-shaped part (2). A liquid storage tank (4) is provided at the other end of the column (3). A guide (5) is provided at the bottom of the liquid storage tank (4). The two guides (5) are inclined and in the shape of an "eight". An installation groove (6) is opened on the opposite side of the two guides (5) along the horizontal direction. Multiple rollers (7) are rotatably arranged at equal intervals in the installation groove (6). Part of the rollers (7) is located outside the installation groove (6).

2. The simple fastening mechanism for packaging paper boxes as described in claim 1, characterized in that: The liquid storage tank (4) contains lubricating fluid. An infusion tube (8) is fixedly inserted into the bottom of one side of the liquid storage tank (4). The other end of the infusion tube (8) extends into the mounting groove (6) and is provided with an application groove (9). An arc opening is provided on one side of the application groove (9), and the curvature corresponds to that of the roller (7) and abuts against the outer surface of the roller (7). The number of infusion tubes (8) and application grooves (9) corresponds to that of the roller (7).

3. The simple fastening mechanism for packaging paper boxes as described in claim 1, characterized in that: The guide (5) has a rotating shaft (10) that rotates vertically. The number of rotating shafts (10) corresponds to the number of rollers (7). The rollers (7) are fixedly sleeved on the rotating shafts (10). The bottom wall of the mounting groove (6) is provided with multiple limiting grooves (30) that are conveniently opened horizontally. A slider (31) is slidably inserted into the limiting groove (30). A bearing (34) is fixedly installed on the top of the slider (31). The bottom end of the rotating shaft (10) is fixedly inserted into the inner ring of the bearing (34). The top of the rotating shaft (10) abuts against the top wall of the mounting groove (6). A damping cylinder (32) and a buffer spring (33) are provided between the slider (31) and the inner side wall of the limiting groove (30). The damping cylinder (32) is movably sleeved on the buffer spring (33).

4. The simple fastening mechanism for packaging paper boxes as described in claim 1, characterized in that: A first spring (11) and a first telescopic rod (12) are provided between the inner wall of the mounting groove (6) and the coating groove (9). The first spring (11) is movably sleeved on the first telescopic rod (12). A drainage tube (29) is fixedly inserted into the center of one side of the coating groove (9). The other end of the drainage tube (29) is slidably inserted into the inner ring of the infusion tube (8) away from the storage tank (4).

5. The simple fastening mechanism for a packaging cardboard box as described in claim 1, characterized in that: A second spring (13) is fixedly installed on the top wall of the liquid storage tank (4). A slider (14) is provided at the other end of the second spring (13). A piston (15) is provided at the bottom of the slider (14). The piston (15) is slidably connected inside the liquid storage tank (4).

6. The simple fastening mechanism for a packaging cardboard box as described in claim 5, characterized in that: There are two second springs (13), and the two second springs (13) are symmetrically fixed between the top wall of the liquid storage tank (4) and the slide (14).

7. The simple fastening mechanism for a packaging cardboard box as described in claim 5, characterized in that: A second telescopic rod (16) is also provided between the inner top wall of the liquid storage tank (4) and the sliding part (14). The number of the second telescopic rods (16) corresponds to the number of the second springs (13), and the second springs (13) are movably sleeved on the second telescopic rods (16).

8. The simple fastening mechanism for packaging paper boxes as described in claim 1, characterized in that: A liquid injection pipe (18) communicating with the interior is fixedly inserted into one side of the liquid storage tank (4), and a one-way liquid inlet valve (17) is provided on the liquid injection pipe (18).

9. The simple fastening mechanism for a packaging cardboard box as described in claim 1, characterized in that: It also includes a conveying assembly for conveying packaging cartons. The top of the frame (1) is provided with a fixed groove (19) in the horizontal direction. The conveying assembly includes a belt (21), a motor (22) and two rotating rollers (20). The two rotating rollers (20) are symmetrically arranged at both ends in the fixed groove (19) in the horizontal direction. The belt (21) is tensioned and sleeved on the two rotating rollers (20). The motor (22) is fixedly installed on the front side of the frame (1), and the drive shaft of the motor (22) is connected to one end of one of the rotating rollers (20).

10. The simple fastening mechanism for a packaging cardboard box as described in claim 1, characterized in that: It also includes an operating component for sealing packaging cartons. The operating component includes an L-shaped frame (23), which is fixedly installed at the rear end of the top of the frame (1). A guide groove (26) is provided at one end of the bottom center of the L-shaped frame (23) in the horizontal direction. A sliding block (27) is slidably inserted into the guide groove (26). A hydraulic cylinder (28) is provided at the bottom of the sliding block (27). A gripper (35) is provided at the driving end of the hydraulic cylinder (28). A cylinder (36) is provided on one side of the guide groove (26). The driving end of the cylinder (36) extends into the guide groove (26) and is fixedly connected to one side of the sliding block (27). A storage trough (37) is provided on the front side of the L-shaped frame (23). A large number of lids are stored in the storage trough (37), and the lids are open downwards.

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