An automatic carton packaging machine

Abstract

This invention discloses an automatic carton sealing machine, belonging to the technical field of carton sealing equipment. It includes a conveying mechanism, a carton folding mechanism, a tape sealing mechanism, and a tape cutting mechanism mounted on a frame. A pressure applying mechanism is provided between the carton folding mechanism and the tape sealing mechanism; a tape pretreatment mechanism is provided between the carton folding mechanism and the pressure applying mechanism. By setting up the pressure applying mechanism and the tape pretreatment mechanism, this invention allows for dynamic adjustment of the tape pressure. The pressure applying mechanism releases an ion airflow to neutralize static electricity, and the tape preheater preheats the tape, achieving stable adhesion between the tape and the carton under different humidity conditions. In high humidity environments, it strengthens tape adhesion, ensuring a firm and non-detachable seal; in low humidity environments, it precisely controls the pressure to protect the carton, while the ion airflow neutralizes static electricity, preventing air bubbles from forming during tape adhesion, thus maintaining optimal sealing performance of the carton.

Description

Technical Field

[0001] This invention relates to the field of carton sealing equipment technology, and in particular to an automatic carton sealing machine. Background Technology

[0002] In modern industrial production, the packaging industry, as an important branch of the machinery manufacturing field, directly impacts the production efficiency of the entire production line due to its level of automation. Automatic carton sealing machines, as key equipment in assembly line operations, can replace manual labor in carton sealing and are widely used in food processing, e-commerce logistics, machinery manufacturing, and other industries. With the continuous expansion of production scale and the diversification of application scenarios, the impact of humidity differences in different regions and storage environments on sealing quality is becoming increasingly prominent. The market is placing higher demands on the sealing stability of automatic carton sealing machines in complex humidity environments. However, existing automatic carton sealing machines still have the following shortcomings during use:

[0003] Firstly, the existing equipment has a fixed tape application pressure design, which cannot dynamically adjust the application pressure and application time according to the moisture content of the carton surface. In high humidity storage or production environments, the increased moisture content of the carton surface will lead to a decrease in tape adhesion. Under fixed pressure, it is difficult to achieve full adhesion between the tape and the carton, which can easily lead to problems such as loosening and falling off of the seal.

[0004] Secondly, in low humidity environments, the surface of cardboard boxes is prone to static electricity due to dryness. During the tape application process, static electricity will attract air and form local air bubbles, which seriously affects the sealing performance and makes the cardboard boxes susceptible to moisture and dust during transportation. Summary of the Invention

[0005] The purpose of this application is to provide an automatic carton sealing machine that can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: an automatic carton sealing machine, comprising a conveying mechanism, a carton folding mechanism, a tape sealing mechanism, and a tape cutting mechanism mounted on a frame; a pressure applying mechanism is provided between the carton folding mechanism and the tape sealing mechanism, used to adjust the pressure of the tape on the sealing position during tape sealing; a tape pretreatment mechanism is provided between the carton folding mechanism and the pressure applying mechanism; the tape pretreatment mechanism includes: an ionizing nozzle, a tape preheater, an isolation mechanism, and an angle adjusting mechanism; wherein, the ionizing nozzle is installed on one side of the carton folding mechanism, and the outlet of the ionizing nozzle... The air vent is directly opposite the sealing position after the carton is folded by the carton folding mechanism; the tape preheater is installed on one side of the ion air nozzle and is used to preheat the unfolded tape; the isolation mechanism is located below the ion air nozzle; the isolation mechanism includes a rotating frame, a roller, and a cleaning brush; the rotating frame is located below the ion air nozzle, and the roller is rotatably connected to the rotating frame around its axis; the cleaning brush is arranged parallel to one side of the roller; an isolation cavity is formed between the roller and the cleaning brush, allowing the ion air generated by the ion air nozzle to pass through; the angle adjustment mechanism is located on one side of the ion air nozzle and is used to adjust the angle between the air outlet of the ion air nozzle and the carton seal.

[0007] Preferably, the pressure applying mechanism includes a first mounting base, a slide rail, a first cylinder, and a pressure sensor; the first mounting base is fixed between the carton folding mechanism and the tape sealing mechanism; the tape sealing mechanism is vertically slidably connected to the first mounting base via the slide rail; the first cylinder is mounted on the carton folding mechanism; and the pressure sensor is located between the output end of the first cylinder and the tape sealing mechanism; when the output shaft of the first cylinder extends or retracts, it allows the tape sealing mechanism to be lifted or lowered.

[0008] Preferably, the rotating frame is rotatably connected to the bottom of the ion nozzle via a rotating shaft, and a torsion spring is provided at the position of the rotating shaft of the rotating frame; when the roller is squeezed, the torsion spring allows the roller to maintain contact with the sealing end of the carton.

[0009] Preferably, the frame is provided with a height adjustment mechanism, and the carton folding mechanism and the tape sealing mechanism are both located on the height adjustment mechanism; the height adjustment mechanism includes a second mounting frame, a belt, a crossbeam, a pair of threaded rods, threaded seats, and pulleys; the second mounting frame is mounted on the frame, the pair of threaded rods are rotatably connected to the second mounting frame around their axes, the pair of threaded seats are slidably connected to the second mounting frame along the length of the threaded rods, the threaded seats are threaded onto the threaded rods, the pulleys are coaxially fixed to the bottom of the threaded rods, and the belt is tensioned between the pair of pulleys; the crossbeam is fixed between the pair of threaded seats; the carton folding mechanism is mounted on one side of the crossbeam, and the tape sealing mechanism is located on the other side of the crossbeam.

[0010] Preferably, the angle adjustment mechanism includes a second mounting base, a mounting plate, a worm gear, a worm, and a handle; the second mounting base is fixed to the crossbeam, the mounting plate is rotatably connected to the second mounting base via a rotating shaft, the ion nozzle is mounted on the mounting plate, the worm gear is coaxially fixed to the rotating shaft on the mounting plate, the worm is rotatably connected to the second mounting base around its axis, and the worm and the worm gear are meshed together; the handle is mounted on the worm.

[0011] Preferably, the crossbeam is equipped with a humidity detection mechanism, which is used to detect the humidity at the sealing position of the carton.

[0012] Preferably, the humidity detection mechanism includes a mounting bracket, a humidity sensor, and a controller; the mounting bracket is fixed to the crossbeam, the humidity sensor is mounted on the mounting bracket, and the detection end of the humidity sensor faces the carton sealing area; the controller is installed in the electrical control cabinet of the carton sealing machine, and the humidity sensor and the first cylinder are both connected to the controller via signal control.

[0013] Preferably, the conveying mechanism includes a width adjustment mechanism, a pair of first mounting frames, and a conveyor belt; the pair of first mounting frames are disposed on the frame, the conveyor belt is disposed within the first mounting frames, and the conveying direction of the conveyor belt is perpendicular to the length direction of the crossbeam; the width adjustment mechanism is disposed on the frame and is used to adjust the distance between the pair of conveyor belts.

[0014] Preferably, the carton folding mechanism includes a short-leaf folding mechanism and a long-leaf folding mechanism; the short-leaf folding mechanism includes a mounting rod, a second cylinder, a rotating block, a folding leaf rotating rod, and a fixed baffle; the mounting rod is fixed to the crossbeam, the rotating block is hinged to the mounting rod, the second cylinder is disposed between the mounting rod and the rotating block, and the folding leaf rotating rod is fixed to the rotating block; when the output shaft of the second cylinder extends or retracts, it allows the folding leaf rotating rod to rotate around the hinge position of the rotating block; the fixed baffle is fixed to the bottom of the mounting rod; the long-leaf folding mechanism includes a pair of folding leaf connecting rods; the pair of folding leaf connecting rods are inclinedly disposed on opposite sides of the fixed baffle.

[0015] Preferably, the tape cutting mechanism includes a rotating shaft, a cutting blade, and a pair of clamping plates; the pair of clamping plates are rotatably connected to the tape sealing mechanism via the rotating shaft, the cutting blade is installed between the pair of clamping plates, and a return spring is provided on the rotating shaft.

[0016] In summary, the technical effects and advantages of this invention are as follows:

[0017] This invention utilizes a pressure-applying mechanism and a tape pretreatment mechanism. The pressure-applying mechanism dynamically adjusts the tape pressure, while the tape pretreatment mechanism uses ion nozzles to release ionized airflow to neutralize static electricity. A tape preheater preheats the tape, achieving stable adhesion between the tape and the carton under varying humidity conditions. In high humidity environments, it enhances tape adhesion, ensuring a firm and non-detachable seal. In low humidity environments, it precisely controls the pressure to protect the carton, while the ionized airflow neutralizes static electricity, preventing air bubbles from forming during tape adhesion and maintaining optimal carton sealing.

[0018] This invention incorporates an ion nozzle, an angle adjustment mechanism, and an isolation mechanism. The angle adjustment mechanism, through worm gear transmission, precisely adjusts the spray angle of the ion nozzle to control the airflow direction and ensure effective static elimination. The rollers in the isolation mechanism, under the action of a torsion spring, remain in contact with the carton surface, working in conjunction with a cleaning brush to remove dust from the sealing area. The ion nozzle comprehensively covers the sealing area to neutralize static electricity, resulting in more thorough static elimination, reducing dust interference with the bonding effect, and further improving the bonding quality between the tape and the carton. The structural design is highly adaptable, easy to operate, and stable and reliable.

[0019] This invention incorporates a height adjustment mechanism and a width adjustment mechanism. The height adjustment mechanism utilizes the synergistic effect of a threaded rod, pulley, and belt to drive the crossbeam and related mechanisms to rise and fall synchronously and smoothly. The width adjustment mechanism can flexibly adjust the distance between the two conveyor belts, enabling the carton sealing machine to adapt to cartons of different heights and widths without requiring significant modifications to the equipment. This significantly improves the equipment's versatility, saves equipment adjustment time, and, in conjunction with the central conveying function of the conveying mechanism, ensures the accurate execution of subsequent processes such as folding, pre-treatment, and sealing, effectively improving overall production efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall second-view three-dimensional structure of the present invention;

[0023] Figure 3 This is a three-dimensional enlarged schematic diagram of a portion of the humidity detection mechanism of the present invention;

[0024] Figure 4This is a partially cross-sectional, enlarged three-dimensional structural diagram of the height adjustment mechanism of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged structural diagram of region A in the middle;

[0026] Figure 6 For the present invention Figure 4 A magnified structural diagram of region B in the middle;

[0027] Figure 7 This is a three-dimensional enlarged structural diagram of the carton folding mechanism, tape sealing mechanism, and pressure application mechanism of the present invention;

[0028] Figure 8 This is a front view enlarged sectional view of the tape sealing mechanism of the present invention;

[0029] Figure 9 This is a partially enlarged schematic diagram of the tape pretreatment mechanism of the present invention;

[0030] Figure 10 This is a three-dimensional enlarged structural schematic diagram of the angle adjustment mechanism of the present invention;

[0031] Figure 11 This is a partial enlarged schematic diagram of the isolation mechanism of the present invention.

[0032] In the diagram: 1. Frame; 2. Conveying mechanism; 21. First mounting frame; 22. Conveyor belt; 23. Width adjustment mechanism; 3. Height adjustment mechanism; 31. Second mounting frame; 32. Threaded rod; 33. Threaded seat; 34. Pulley; 35. Belt; 36. Crossbeam; 4. Carton folding mechanism; 41. Mounting rod; 42. Second cylinder; 43. Rotating block; 44. Folding rotating rod; 45. Fixed baffle; 46. Folding connecting rod; 5. Tape sealing mechanism; 6. Tape cutting mechanism; 61. Rotating shaft; 62. Clamping plate; 63. Cutting rod. 7. Knife; 8. Humidity detection mechanism; 9. Mounting bracket; 10. Humidity sensor; 11. Pressure application mechanism; 12. First mounting base; 13. Slide rail; 14. First cylinder; 15. Pressure sensor; 16. Tape pretreatment mechanism; 17. Ionizing nozzle; 18. Tape preheater; 19. Isolation mechanism; 10. Rotating frame; 11. Roller; 12. Torsion spring; 13. Cleaning brush; 14. Angle adjustment mechanism; 15. Second mounting base; 16. Mounting plate; 17. Worm gear; 18. Worm; 19. Handle. Detailed Implementation

[0033] The technical solutions of 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.

[0034] Example 1: Please refer to Figures 1-2 and Figures 7-9 An automatic carton sealing machine is shown, comprising a conveying mechanism 2, a carton folding mechanism 4, a tape sealing mechanism 5, and a tape cutting mechanism 6, all mounted on a frame 1. A pressure applying mechanism 8 is provided between the carton folding mechanism 4 and the tape sealing mechanism 5 to adjust the pressure of the tape on the sealing position during sealing. A tape pretreatment mechanism 9 is provided between the carton folding mechanism 4 and the pressure applying mechanism 8. The tape pretreatment mechanism 9 includes an ionizing nozzle 91, a tape preheater 92, an isolation mechanism 93, and an angle adjusting mechanism 94. The ionizing nozzle 91 is installed on one side of the carton folding mechanism 4, and its outlet faces the sealing point after folding by the carton folding mechanism 4. At the location; a tape preheater 92 is installed on one side of the ion nozzle 91 and is used to preheat the unfolded tape; an isolation mechanism 93 is located below the ion nozzle 91; the isolation mechanism 93 includes a rotating frame 931, a roller 932, and a cleaning brush 934; the rotating frame 931 is located below the ion nozzle 91, and the roller 932 is rotatably connected to the rotating frame 931 around its axis; the cleaning brush 934 is arranged parallel to one side of the roller 932; an isolation cavity is formed between the roller 932 and the cleaning brush 934 to allow the ion air generated by the ion nozzle 91 to pass through; an angle adjustment mechanism 94 is located on one side of the ion nozzle 91 and is used to adjust the angle between the air outlet of the ion nozzle 91 and the carton seal.

[0035] It should be noted that after the carton sealing machine is started, the cartons to be sealed are conveyed to the carton folding mechanism 4 via the conveying mechanism 2. The carton folding mechanism 4 completes the folding operation of the short and long leaves of the carton. The folded carton continues to be conveyed to the tape pretreatment mechanism 9 area. The angle of the outlet of the ion nozzle 91 is adjusted by the angle adjustment mechanism 94 so that the ion air can fully cover the sealing position of the carton. The ion nozzle 91 is activated to generate positive and negative ion airflow, which neutralizes the static electricity generated on the surface of the carton due to low humidity. At the same time, the roller 932 in the isolation mechanism 93 abuts against the surface of the carton during the carton conveying process, and works with the cleaning brush 934 to remove the fine dust at the sealing position of the carton. The tape preheater 92 is activated simultaneously to preheat the unfolded tape. The pretreated carton continues to be conveyed to the pressure applying mechanism 8. The pressure applying mechanism 8 dynamically adjusts the pressure of the tape on the sealing position of the carton according to the humidity of the carton surface. Then the tape sealing mechanism 5 completes the tape bonding operation. Finally, the tape cutting mechanism 6 cuts the tape, completing the entire carton sealing process.

[0036] The ion nozzle 91 in the tape pretreatment mechanism 9 effectively neutralizes the static electricity on the carton surface in low humidity environments, preventing air bubbles from forming during tape application. The tape preheater 92 enhances tape adhesion, ensuring bonding effects under different humidity conditions. The isolation mechanism 93 guides the airflow direction, reducing the impact of airflow on the tape sealing mechanism 5 and the tape cutting mechanism 6, while also cleaning the carton surface. The angle adjustment mechanism 94 ensures more comprehensive ion air coverage. Combined with the pressure adjustment of the pressure application mechanism 8, this design effectively solves problems such as insufficient adhesion in high humidity and carton damage in low humidity caused by applying pressure to fix the tape in existing equipment. The overall structure is compact, adaptable to the high-speed production rhythm of the carton sealing machine, and significantly improves the sealing performance and stability.

[0037] See Figure 1 , Figures 6-7 and Figure 9 The pressure applying mechanism 8 includes a first mounting base 81, a slide rail 82, a first cylinder 83, and a pressure sensor 84. The first mounting base 81 is fixed between the carton folding mechanism 4 and the tape sealing mechanism 5. The tape sealing mechanism 5 is vertically slidably connected to the first mounting base 81 via the slide rail 82. The first cylinder 83 is installed on the carton folding mechanism 4. The pressure sensor 84 is located between the output end of the first cylinder 83 and the tape sealing mechanism 5. When the output shaft of the first cylinder 83 extends or retracts, it allows the tape sealing mechanism 5 to be lifted or lowered.

[0038] It should be noted that after the carton is processed by the tape pretreatment mechanism 9, it is conveyed to the pressure application mechanism 8. The extension and retraction of the output shaft is adjusted by the first cylinder 83, and the tape sealing mechanism 5 is driven to move vertically along the first mounting base 81 via the slide rail 82. This adjusts the pressure applied by the tape sealing mechanism 5 to the sealing point of the carton. The pressure sensor 84 detects the actual pressure in real time so that the first cylinder 83 can be finely adjusted according to the actual test pressure. After the pressure application and bonding are completed, the first cylinder 83 drives the tape sealing mechanism 5 to reset, waiting for the next carton.

[0039] The tape sealing mechanism 5 is smoothly raised and lowered by the cooperation of the first cylinder 83 and the slide rail 82. The pressure sensor 84 forms a closed-loop control, which enables the pressure to be dynamically adjusted. This effectively avoids tape detachment caused by insufficient pressure in high humidity environments and carton damage caused by excessive pressure in low humidity environments. The pressure adjustment is precise and responsive, always maintaining the best pressure state, which significantly improves the bonding quality between the tape and the carton under different humidity conditions.

[0040] See Figure 9 and Figure 11The rotating frame 931 is rotatably connected to the ion nozzle 91 below via a rotating shaft. A torsion spring 933 is provided at the rotating shaft position of the rotating frame 931. When the roller 932 is squeezed, the torsion spring 933 allows the roller 932 to maintain contact with the carton seal.

[0041] It should be noted that the carton moves towards the ion nozzle 91 under the drive of the conveying mechanism 2. When the carton contacts the roller 932, the roller 932 rotates around the hinge point under the squeezing force of the carton. The rotating frame 931 rotates synchronously and compresses the torsion spring 933. The torsion spring 933 generates a reverse elastic force, so that the roller 932 always contacts the surface of the carton. During the carton conveying process, the roller 932 rotates synchronously with the carton. At the same time, the cleaning brush 934 wipes the sealing surface of the carton to remove dust and debris. The ion nozzle 91 sprays ion air at the sealing point of the carton to neutralize static electricity. After the carton leaves the roller 932, the torsion spring 933 drives the rotating frame 931 and the roller 932 to reset, waiting for the next carton.

[0042] The roller 932, in conjunction with the cleaning brush 934, can effectively remove dust from the surface of the cardboard box, preventing dust from affecting the tape bonding effect.

[0043] See Figure 1 and Figures 4-5 The frame 1 is equipped with a height adjustment mechanism 3. It is understood that this application does not limit the specific structure and installation method of the height adjustment mechanism 3. The following only provides a feasible technical solution. The height adjustment mechanism 3 includes a second mounting frame 31, a belt 35, a crossbeam 36, a pair of threaded rods 32, threaded seats 33, and pulleys 34. The second mounting frame 31 is mounted on the frame 1. The pair of threaded rods 32 are rotatably connected to the second mounting frame 31 around their axis. The pair of threaded seats 33 are slidably connected to the second mounting frame 31 along the length of the threaded rods 32. The threaded seats 33 are threadedly sleeved on the threaded rods 32. The pulleys 34 are coaxially fixed to the bottom of the threaded rods 32. The belt 35 is tensioned on the pair of pulleys 34. The crossbeam 36 is fixed between the pair of threaded seats 33. The carton folding mechanism 4 is installed on one side of the crossbeam 36, and the tape sealing mechanism 5 is set on the other side of the crossbeam 36.

[0044] It should be noted that when it is necessary to adapt to cartons of different heights, one of the threaded rods 32 is rotated. The pulley 34 at the bottom of the threaded rod 32 drives the other threaded rod 32 to rotate synchronously via the belt 35. When the two threaded rods 32 rotate, the threaded seat 33 moves up and down along the length of the threaded rod 32. Since the crossbeam 36 is fixed between the pair of threaded seats 33, the threaded seats 33 drive the crossbeam 36 to rise and fall synchronously. The crossbeam 36 then drives the carton folding mechanism 4, the tape sealing mechanism 5 and related auxiliary mechanisms installed on it to rise and fall synchronously until it is adjusted to a position that matches the current height of the carton. Then, the rotation of the threaded rod 32 is stopped to complete the height adjustment.

[0045] The synchronous rotation of the two threaded rods 32 is achieved through the cooperation of the threaded rod 32, pulley 34 and belt 35, ensuring that the crossbeam 36 remains horizontal during the lifting process and avoiding the impact of mechanism tilt on sealing accuracy. The threaded transmission method makes the height adjustment precise and stable, and can adapt to cartons of different heights, significantly improving the adaptability of the carton sealing machine.

[0046] See Figures 9-10 The angle adjustment mechanism 94 includes a second mounting base 941, a mounting plate 942, a worm gear 943, a worm 944, and a handle 945. The second mounting base 941 is fixed to the crossbeam 36. The mounting plate 942 is rotatably connected to the second mounting base 941 via a rotating shaft. The ion nozzle 91 is mounted on the mounting plate 942. The worm gear 943 is coaxially fixed to the rotating shaft on the mounting plate 942. The worm 944 is rotatably connected to the second mounting base 941 around its axis, and the worm 944 is meshed with the worm gear 943. The handle 945 is mounted on the worm 944.

[0047] It should be noted that, based on the width of the carton, turning the handle 945 causes the worm gear 944 to rotate around its axis. The worm gear 944 meshes with the worm wheel 943, which in turn drives the shaft on the mounting plate 942 to rotate. The mounting plate 942 then rotates around the shaft, thereby adjusting the outlet angle of the ion nozzle 91 mounted on the mounting plate 942. This ensures that the ion air can fully cover the sealing area of ​​the carton, while controlling the direction of airflow. After the angle adjustment is completed, turning the handle 945 stops. The self-locking characteristic of the worm gear 943 and worm wheel 944 structure keeps the ion nozzle 91 stable at the current angle.

[0048] The worm gear 943 and worm 944 drive are used to achieve the angle adjustment of the ion air nozzle 91. The adjustment is highly accurate and has a self-locking function, which can effectively fix the adjusted angle and prevent the angle from shifting due to vibration during operation. The angle can be adjusted by turning the handle 945. The operation is simple and quick. It can be adapted to cartons of different widths, so that the ion air always covers the entire area of ​​the carton sealing. It can also control the flow direction of the ion air after blowing on the carton sealing position to prevent it from affecting the tape sealing mechanism.

[0049] See Figures 1-3A humidity detection mechanism 7 is installed on the crossbeam 36 to detect the humidity at the carton sealing position. The humidity detection mechanism 7 includes a mounting bracket 71, a humidity sensor 72, and a controller. It is understood that the humidity sensor 72 and the controller are existing technologies. The controller is not shown in the figure and will not be described in detail. The mounting bracket 71 is fixed to the crossbeam 36, and the humidity sensor 72 is installed on the mounting bracket 71, with the detection end of the humidity sensor 72 facing the carton sealing position. The controller is installed in the electrical control cabinet of the carton sealing machine. The humidity sensor 72, the first cylinder 83, and the tape pretreatment mechanism 9 are all connected to the controller via signal control.

[0050] It should be noted that after the carton enters the sealing machine, it first passes through the humidity detection mechanism 7 area. The humidity sensor 72 on the mounting bracket 71 detects the surface humidity at the sealing position of the carton in real time, converts the detected humidity signal into an electrical signal and transmits it to the controller. The controller analyzes and processes the humidity signal to determine whether the current humidity level is high, suitable, or low. Subsequently, the controller sends a pressure adjustment command to the first cylinder 83 of the pressure application mechanism 8 according to the humidity level, and sends start or stop commands to the ion nozzle 91 and tape preheater 92 of the tape pretreatment mechanism 9, realizing the linkage control between humidity detection and subsequent mechanisms. Throughout the sealing process, the humidity sensor 72 continuously detects humidity, and the controller dynamically adjusts the working parameters of the relevant mechanisms according to the real-time humidity data.

[0051] The humidity sensor 72 detects the surface humidity of the carton in real time, providing accurate humidity data support for the entire sealing system. The controller realizes closed-loop control of humidity detection and pressure application mechanism 8 and tape pretreatment mechanism 9, so that pressure regulation, static elimination and tape preheating can be accurately matched with the current humidity environment. This solves the problem of tape bonding stability under different humidity environments from the source. The pressure is increased when the humidity is high, static elimination and tape preheating are activated when the humidity is low, and standard parameters are maintained when the humidity is suitable. This significantly improves the adaptability of the carton sealing machine in complex humidity environments and the sealing quality. At the same time, the controller can store humidity data and adjustment parameters, which facilitates production quality traceability.

[0052] See Figures 1-2 The conveying mechanism 2 includes a width adjustment mechanism 23, a pair of first mounting frames 21, and a conveyor belt 22; it is understood that the width adjustment mechanism 23 is prior art and will not be described in detail; the pair of first mounting frames 21 are disposed on the frame 1, and the conveyor belt 22 is disposed within the first mounting frames 21, and the conveying direction of the conveyor belt 22 is perpendicular to the crossbeam 36 (e.g., Figure 4 (As shown) The length direction is perpendicular; the width adjustment mechanism 23 is set on the frame 1 and is used to adjust the distance between a pair of conveyor belts 22.

[0053] It should be noted that, according to the width of the carton to be packaged, the operating width adjustment mechanism 23 adjusts the distance between a pair of first mounting brackets 21, and then adjusts the spacing between the two conveyor belts 22 so that the spacing matches the width of the carton. After the adjustment is completed, the carton is placed between a pair of conveyor belts 22, and the conveying mechanism 2 is started. The conveyor belts 22 rotate and drive the carton to be conveyed towards the carton folding mechanism 4. Since the two conveyor belts 22 adopt a symmetrical clamping conveying method, the carton always remains in the center during the conveying process, avoiding deviation and ensuring that subsequent folding, pretreatment, and pressure application processes can be carried out accurately.

[0054] The width adjustment mechanism 23 allows for flexible adjustment of the distance between the two conveyor belts 22, accommodating cartons of different widths. During transport, the cartons remain centered, effectively preventing deviation and ensuring precise operation in subsequent processes. Combined with the height adjustment mechanism 3, the carton sealing machine can fully adapt to cartons of different sizes, significantly improving the equipment's versatility. The conveyor belts 22 provide stable and reliable transport, meeting the high-speed production pace of the carton sealing machine. Working in conjunction with other mechanisms, it further improves the efficiency and precision of the entire sealing process.

[0055] Example 2: The technical solution of this example differs from that of Example 1 in that: (See below) Figure 7 The carton folding mechanism 4 includes a short-leaf folding mechanism and a long-leaf folding mechanism. The short-leaf folding mechanism includes a mounting rod 41, a second cylinder 42, a rotating block 43, a folding rotating rod 44, and a fixed baffle 45. The mounting rod 41 is fixed to the crossbeam 36, the rotating block 43 is hinged to the mounting rod 41, the second cylinder 42 is located between the mounting rod 41 and the rotating block 43, and the folding rotating rod 44 is fixed to the rotating block 43. When the output shaft of the second cylinder 42 extends or retracts, it allows the folding rotating rod 44 to rotate around the hinged position of the rotating block 43. The fixed baffle 45 is fixed to the bottom of the mounting rod 41. The long-leaf folding mechanism includes a pair of folding connecting rods 46. The pair of folding connecting rods 46 are inclinedly arranged on opposite sides of the fixed baffle 45.

[0056] It should be noted that when the carton is conveyed to the carton folding mechanism 4 by the conveying mechanism 2, it first contacts the fixed baffle 45. The fixed baffle 45 pushes the front short leaf of the carton forward to complete the folding. Then, the output shaft of the second cylinder 42 is controlled to extend and retract. The second cylinder 42 drives the rotating block 43 to rotate around the hinge point. The rotating block 43 then drives the folding rotating rod 44 to rotate. The folding rotating rod 44 folds the rear short leaf of the carton to the designated position. After the short leaf is folded, the carton continues to be conveyed. Under the gradual guidance of a pair of inclined folding connecting rods 46, the long leaves on both sides gradually close towards the middle until the carton is completely passed through the folding connecting rods 46 and the long leaves are folded, preparing for the subsequent tape sealing.

[0057] The short leaf folding mechanism drives the folding leaf rotating rod 44 through the second cylinder 42, and works with the fixed baffle 45 to achieve precise folding of the short leaf. The long leaf folding mechanism adopts a gradient guide design, which eliminates the need for additional driving components, simplifies the structure and reduces costs. The folding process is smooth and gentle, which can avoid damage caused by stress concentration at the folding part of the carton. Combined with the stable conveying of the conveying mechanism 2, the folding efficiency is high and the accuracy is good, laying a good foundation for the subsequent tape sealing mechanism 5 bonding operation.

[0058] See Figures 7-8 The tape cutting mechanism 6 includes a rotating shaft 61, a cutting blade 63, and a pair of clamping plates 62; the pair of clamping plates 62 are rotatably connected to the tape sealing mechanism 5 via the rotating shaft 61, the cutting blade 63 is installed between the pair of clamping plates 62, and a return spring is provided on the rotating shaft 61.

[0059] It should be noted that after the tape sealing mechanism 5 completes the tape application on the carton, the carton continues to be conveyed forward, causing the tape to move synchronously. At this time, a pair of clamps 62 rotate around the rotating shaft 61 under the resistance of the carton. The return spring on the rotating shaft 61 is compressed. When the carton has completely passed through the clamps 62, the resistance of the carton to the clamps 62 disappears, the return spring returns to its original shape, and the clamps 62 rotate in the opposite direction around the rotating shaft 61. The cutting blade 63 installed between the clamps 62 moves quickly with the clamps 62 to accurately cut the taut tape. The cut end of the tape is attached to the carton seal, completing the sealing of the entire carton.

[0060] The elastic potential energy of the return spring drives the cutting blade 63 to complete the tape cutting. The structure is simple and the response is fast. The cutting action is synchronized with the carton conveying process, eliminating the need for additional drive control components, thus reducing equipment costs and energy consumption. The cutting blade 63 has high cutting accuracy, which can avoid the tape from being stretched, stuck, or not cut completely, ensuring the cleanliness of the carton sealing. Combined with the bonding action of the tape sealing mechanism 5, the tape sealing and cutting are integrated into a continuous operation, significantly improving the packaging efficiency.

[0061] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic carton sealing machine, comprising a conveying mechanism (2), a carton folding mechanism (4), a tape sealing mechanism (5), and a tape cutting mechanism (6) mounted on a frame (1), characterized in that: A pressure-applying mechanism (8) is provided between the carton folding mechanism (4) and the tape sealing mechanism (5) to adjust the pressure of the tape on the carton sealing point; a tape pretreatment mechanism (9) is provided between the carton folding mechanism (4) and the pressure-applying mechanism (8); the tape pretreatment mechanism (9) includes: Ionizing nozzle (91), the ionizing nozzle (91) is installed on one side of the carton folding mechanism (4), and the air outlet of the ionizing nozzle (91) is directly opposite the sealing position after the carton is folded by the carton folding mechanism (4); Tape preheater (92), which is installed on one side of the ion nozzle (91) and is used to preheat the unfolded tape; An isolation mechanism (93) is disposed below the ion nozzle (91); the isolation mechanism (93) includes a roller (932) and a cleaning brush (934); the roller (932) is rotatably connected to the ion nozzle (91) around its axis; the cleaning brush (934) is disposed parallel to one side of the roller (932); And an angle adjustment mechanism (94), which is located on one side of the ion nozzle (91) and is used to adjust the angle between the air outlet of the ion nozzle (91) and the carton seal.

2. The automatic carton sealing machine according to claim 1, characterized in that: The pressure applying mechanism (8) includes a first mounting base (81), a slide rail (82), a first cylinder (83), and a pressure sensor (84); the first mounting base (81) is fixed between the carton folding mechanism (4) and the tape sealing mechanism (5), the tape sealing mechanism (5) is vertically slidably connected to the first mounting base (81) through the slide rail (82), the first cylinder (83) is installed on the carton folding mechanism (4), and the pressure sensor (84) is located between the output end of the first cylinder (83) and the tape sealing mechanism (5); when the output shaft of the first cylinder (83) extends or retracts, it allows the tape sealing mechanism (5) to be lifted or lowered.

3. An automatic carton sealing machine according to claim 1, characterized in that: A rotating frame (931) is hinged below the ion nozzle (91), and a torsion spring (933) is provided at the hinge position of the rotating frame (931); when the roller (932) is squeezed, the torsion spring (933) allows the roller (932) to maintain contact with the carton seal.

4. An automatic carton sealing machine according to claim 2, characterized in that: The frame (1) is provided with a height adjustment mechanism (3); the height adjustment mechanism (3) includes a second mounting frame (31), a belt (35), a crossbeam (36), a pair of threaded rods (32), a threaded seat (33), and a pulley (34); the second mounting frame (31) is mounted on the frame (1), the pair of threaded rods (32) are rotatably connected to the second mounting frame (31) around their axis, the pair of threaded seats (33) are slidably connected to the second mounting frame (31) along the length direction of the threaded rods (32), the threaded seat (33) is threadedly sleeved on the threaded rod (32), the pulley (34) is coaxially fixed to the bottom of the threaded rod (32), and the belt (35) is tensioned on the pair of pulleys (34); the crossbeam (36) is fixed between the pair of threaded seats (33); the carton folding mechanism (4) is installed on one side of the crossbeam (36), and the tape sealing mechanism (5) is set on the other side of the crossbeam (36).

5. An automatic carton sealing machine according to claim 1, characterized in that: The angle adjustment mechanism (94) includes a second mounting base (941), a mounting plate (942), a worm gear (943), a worm (944), and a handle (945); the second mounting base (941) is fixed to the crossbeam (36), the mounting plate (942) is rotatably connected to the second mounting base (941) via a rotating shaft, the ion nozzle (91) is mounted on the mounting plate (942), the worm gear (943) is coaxially fixed to the rotating shaft on the mounting plate (942), the worm (944) is rotatably connected to the second mounting base (941) around its axis, and the worm (944) is meshed with the worm gear (943); the handle (945) is mounted on the worm (944).

6. An automatic carton sealing machine according to claim 4, characterized in that: A humidity detection mechanism (7) is provided on the crossbeam (36) and is used to detect the humidity at the sealing position of the carton.

7. An automatic carton sealing machine according to claim 6, characterized in that: The humidity detection mechanism (7) includes a mounting bracket (71), a humidity sensor (72), and a controller; the mounting bracket (71) is fixed to the crossbeam (36), the humidity sensor (72) is installed on the mounting bracket (71), and the detection end of the humidity sensor (72) is facing the carton sealing end; the controller is installed in the electrical control cabinet of the carton sealing machine, and the humidity sensor (72), the first cylinder (83), and the tape pretreatment mechanism (9) are all connected to the controller via signal control.

8. An automatic carton sealing machine according to claim 4, characterized in that: The conveying mechanism (2) includes a width adjustment mechanism (23), a pair of first mounting frames (21) and a conveyor belt (22); the pair of first mounting frames (21) are disposed on the frame (1), the conveyor belt (22) is disposed inside the first mounting frames (21), and the conveying direction of the conveyor belt (22) is perpendicular to the length direction of the crossbeam (36); the width adjustment mechanism (23) is disposed on the frame (1) and is used to adjust the distance between the pair of conveyor belts (22).

9. An automatic carton sealing machine according to claim 4, characterized in that: The carton folding mechanism (4) includes a short-leaf folding mechanism and a long-leaf folding mechanism; the short-leaf folding mechanism includes a mounting rod (41), a second cylinder (42), a rotating block (43), a folding rotating rod (44), and a fixed baffle (45); the mounting rod (41) is fixed to the crossbeam (36), the rotating block (43) is hinged to the mounting rod (41), the second cylinder (42) is located between the mounting rod (41) and the rotating block (43), and the folding rotating rod (44) is fixed to the rotating block (43); when the output shaft of the second cylinder (42) extends or retracts, it allows the folding rotating rod (44) to rotate around the hinge position of the rotating block (43); the fixed baffle (45) is fixed to the bottom of the mounting rod (41); the long-leaf folding mechanism includes a pair of folding connecting rods (46); the pair of folding connecting rods (46) are inclinedly arranged on opposite sides of the fixed baffle (45).

10. An automatic carton sealing machine according to claim 1, characterized in that: The tape cutting mechanism (6) includes a rotating shaft (61), a cutting blade (63), and a pair of clamping plates (62); the pair of clamping plates (62) are rotatably connected to the tape sealing mechanism (5) via the rotating shaft (61), the cutting blade (63) is installed between the pair of clamping plates (62), and a return spring is provided on the rotating shaft (61).

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