A high speed longitudinal sealing mechanism

Abstract

The utility model discloses a high -speed longitudinal seal mechanism, including frame, heating module and seal module, heating module includes fixed frame, and is located the cylinder of fixed frame, fixed longitudinal seal roll and movable longitudinal seal roll, and seal module includes mounting panel, and is located drive motor, active seal wheel and passive seal wheel on mounting panel, through setting heating module and seal module on frame, the high temperature heating of film passes heating module, then is extruded and is sealed by active seal wheel and passive seal wheel, the distance of movable longitudinal seal roll and fixed longitudinal seal roll can be adjusted flexibly to cylinder, can adjust the interval according to the thickness of film, promote the heating effect of film, seal module adopts drive motor and drives active seal wheel rotation, and the compaction and shaping of heated film are carried out together with passive seal wheel, promote the quality of seal, and the opening and closing of passive seal wheel can be manually controlled to adjusting device, and convenient debugging and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and more specifically, to a high-speed longitudinal sealing mechanism. Background Technology

[0002] In packaging equipment, the longitudinal sealing mechanism is a crucial component for sealing packaging materials longitudinally. Traditional longitudinal sealing mechanisms typically employ pairs of sealing rollers with patterns or teeth engraved on their surfaces for applying pressure and forming sealing textures. Some rollers have built-in heating elements, achieving sealing through intermittent pressing. While their structure is simple, their operating efficiency is low and their speed is slow. Furthermore, traditional longitudinal sealing mechanisms are relatively large, occupying significant space, reducing the flexibility of the packaging machine's internal layout, and also decreasing operational convenience. Utility Model Content

[0003] This utility model provides a high-speed longitudinal sealing mechanism to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: A high-speed longitudinal sealing mechanism includes a frame, a heating module, and a sealing module; the frame is connected to a packaging machine, the heating module is mounted on the frame, and the sealing module is mounted below the heating module; the heating module includes a fixed frame, and a cylinder, a fixed longitudinal sealing roller, and a movable longitudinal sealing roller mounted on the fixed frame; the cylinder is connected to the movable longitudinal sealing roller and drives the movable longitudinal sealing roller to move closer to or away from the fixed longitudinal sealing roller; the sealing module includes a mounting plate, and a drive motor, an active sealing wheel, and a passive sealing wheel mounted on the mounting plate; the drive motor drives the active sealing wheel to rotate, and the active sealing wheel and the passive sealing wheel are arranged opposite to each other.

[0004] Preferably, the cross-section of the fixing frame is a flat-bottomed U-shaped structure, which includes a left side wall and a right side wall; a pair of linear bearings are provided on the left side wall of the cylinder, the pair of linear bearings are respectively located on both sides of the cylinder, and a slidable longitudinal sealing guide rod is provided on the linear bearing; the movable longitudinal sealing roller includes a roller body, a heating tube and a fixing plate, the heating tube is located in the roller body, and the fixing plate is located on the back of the roller body; the longitudinal sealing guide rod is connected to the fixing plate, and the piston rod of the cylinder is engaged with the fixing plate; the structure of the fixed longitudinal sealing roller is the same as that of the movable longitudinal sealing roller, and it is installed on the right side wall.

[0005] Preferably, the cylinder is a high-temperature resistant cylinder.

[0006] Preferably, the mounting plate is provided with a first bearing seat and a second bearing seat; the first bearing seat is fixedly installed, and a main shaft is provided on the first bearing seat, one end of the main shaft is connected to the drive motor, and the other end is connected to the active sealing wheel; the second bearing seat is provided with a rotatable driven shaft, and the driven shaft is connected to the passive sealing wheel.

[0007] Preferably, the mounting plate is provided with a rotating shaft, a limiting screw, and an adjusting device; the second bearing seat is rotatably connected to the mounting plate via the rotating shaft, and a lever is provided on the side of the second bearing seat; the limiting screw is configured to cooperate with the lever; one end of the lever is provided with a first spring; the adjusting device includes a handle, a switch sleeve, a switch shaft, and a switch plate, and the switch plate is provided with a second spring; the switch sleeve is connected to the mounting plate, the switch shaft is rotatably mounted on the switch sleeve, one end of the switch shaft is connected to the handle, and the other end is connected to the switch plate, and the switch plate is configured to cooperate with the lever.

[0008] Preferably, the lever includes a support arm, a first vertical plate, and a second vertical plate. One end of the support arm is connected to the second bearing seat, and the other end is connected to the second vertical plate. The second vertical plate is used to connect the first spring. The first vertical plate is disposed on the top surface of the support arm and is configured to cooperate with the limiting screw.

[0009] Preferably, the bottom of the mounting plate is provided with a guide module, which includes a flanger, an edge guide, and a third spring. The flanger is hinged to the mounting plate via a hinge. The edge guide is located on the flanger and is used to guide the longitudinal seal formed after the film is sealed to be close to the packaging bag. The flanger is used to press the longitudinal seal against the packaging bag. The third spring is used to drive the flanger to squeeze the packaging bag.

[0010] Preferably, the frame includes an adjusting plate and a horizontal plate, and a pair of parallel linear optical axes are provided between the adjusting plate and the horizontal plate; one end of the linear optical axis is fixedly connected to the adjusting plate, and the other end is provided with a clamping block, which is rotatably connected to the horizontal plate; a slidable connecting seat is provided on the linear optical axis, which is used to connect to the packaging machine; an adjusting screw is threadedly connected to the adjusting plate, one end of the adjusting screw is provided with a handwheel, and the other end is provided with a rotatable rotating seat, which is connected to the packaging machine.

[0011] Preferably, the drive motor is a servo motor.

[0012] Preferably, the surface of the active sealing wheel is provided with a grid-like anti-slip texture, and the surface of the passive sealing wheel is provided with a toothed anti-slip texture.

[0013] Compared with existing technologies, the advantages of this invention are as follows: This invention uses a heating module and a sealing module mounted on the frame. The film is heated to a high temperature by the heating module and then sealed by the active and passive sealing rollers. The cylinder can flexibly adjust the distance between the movable and fixed longitudinal sealing rollers, allowing for rapid adjustment of the spacing based on the film thickness, thus improving the heating effect. The sealing module uses a drive motor to rotate the active sealing roller, which, together with the passive sealing roller, compacts and shapes the heated film, improving the sealing quality. The adjustment device allows for manual control of the opening and closing of the passive sealing roller, facilitating debugging and maintenance. This invention has a compact structure, occupies little space, has a fast sealing speed, and can work continuously without interruption, meeting the longitudinal sealing requirements of high-speed continuous packaging machines. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the high-speed longitudinal sealing mechanism according to an embodiment of the present utility model;

[0015] Figure 2 This is a structural diagram of the high-speed longitudinal sealing mechanism according to another perspective of an embodiment of the present utility model;

[0016] Figure 3 This is a front view of the high-speed longitudinal sealing mechanism according to an embodiment of the present utility model;

[0017] Figure 4 This is a side view of the high-speed longitudinal sealing mechanism according to an embodiment of the present utility model;

[0018] Figure 5 This is a top view of the high-speed longitudinal sealing mechanism according to an embodiment of the present utility model;

[0019] exist Figures 1 to 5 In the diagram, the correspondence between the component names and the drawing numbers is as follows:

[0020] 1--Frame, 11--Adjusting plate, 12--Horizontal plate, 13--Linear optical axis, 14--Clamping block, 15--Connecting seat, 16--Adjusting screw, 17--Handwheel, 18--Rotating seat, 2--Heating module, 21--Fixing frame, 211--Linear bearing, 212--Longitudinal sealing guide rod, 22--Cylinder, 23--Fixed longitudinal sealing roller, 24--Modible longitudinal sealing roller, 241--Roller body, 242--Heating tube, 243--Fixing plate, 3--Sealing module, 31--Mounting plate, 311--First bearing seat, 312-- - Second bearing housing, 312a--support arm, 312b--first vertical plate, 312c--second vertical plate, 313--main shaft, 314--driven shaft, 315--rotating shaft, 316--limit screw, 32--drive motor, 33--active sealing wheel, 34--passive sealing wheel, 4--adjusting device, 41--handle, 42--switch sleeve, 43--switch shaft, 44--switch plate, 45--second spring, 5--first spring, 6--guide module, 61--flanger, 62--edge guide, 63--third spring. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please refer to Figures 1 to 5This utility model provides a high-speed longitudinal sealing mechanism, including a frame 1, a heating module 2, and a sealing module 3. The frame 1 is connected to a packaging machine, the heating module 2 is mounted on the frame 1, and the sealing module 3 is mounted below the heating module 2. The heating module 2 includes a fixed frame 21, and a cylinder 22, a fixed longitudinal sealing roller 23, and a movable longitudinal sealing roller 24 mounted on the fixed frame 21. The cylinder 22 is connected to the movable longitudinal sealing roller 24 and drives the movable longitudinal sealing roller 24 to move closer to or away from the fixed longitudinal sealing roller 23. The sealing module 3 includes a mounting plate 31, and a drive motor 32, an active sealing wheel 33, and a passive sealing wheel 34 mounted on the mounting plate 31. The drive motor 32 drives the active sealing wheel 33 to rotate, and the active sealing wheel 33 and the passive sealing wheel 34 are arranged opposite to each other.

[0025] In this embodiment of the invention, the frame 1 serves as the carrier of the entire longitudinal sealing mechanism, connected to the packaging machine, and provides a supporting foundation for the heating module 2 and the sealing module 3. The design of the fixed longitudinal sealing roller 23 and the movable longitudinal sealing roller 24 in the heating module 2, combined with the precise drive of the cylinder 22, allows for flexible adjustment of the distance between the two rollers according to the thickness and characteristics of the packaging material. Whether it is a thin plastic film or a thicker composite packaging material, uniform heating can be achieved, ensuring the stability of the heating process, reducing temperature fluctuations, and improving the consistency and reliability of the sealing. The sealing module 3 uses a drive motor 32 to drive the active sealing wheel 33 to rotate, working in conjunction with the passive sealing wheel 34 to form a traction mechanism. During this process, the film is compacted and shaped, resulting in a stable longitudinal seal. Through the above structural arrangement, the vertical layout of the heating module 2 and the sealing module 3 allows the packaging material to be quickly sealed after heating, resulting in a compact overall structure that effectively utilizes equipment space.

[0026] The working process of this embodiment is as follows: Connect the frame 1 to the packaging machine, so that the entire longitudinal sealing mechanism is installed on the packaging machine. Start the heating module 2 to preheat the fixed longitudinal sealing roller 23 and the movable longitudinal sealing roller 24. The cylinder 22 pushes the movable longitudinal sealing roller 24 to move towards the fixed longitudinal sealing roller 23 to form a gap for the packaging film to pass through. The packaging film is conveyed from the packaging machine to pass between the fixed longitudinal sealing roller 23 and the movable longitudinal sealing roller 24 and is heated during the passage. The heated packaging film moves downward to the sealing module 3. The drive motor 32 drives the active sealing wheel 33 to rotate. Since the active sealing wheel 33 and the passive sealing wheel 34 are set opposite to each other, the passive sealing wheel 34 also rotates under the action of the friction of the film. The two wheels work together to compact and shape the packaging film, so that the longitudinal direction of the packaging film is sealed. Then the packaging material is continuously conveyed to enter the next packaging process.

[0027] Preferably, the cross-section of the fixing frame 21 is a flat-bottomed U-shaped structure, which includes a left side wall and a right side wall; the cylinder 22 is mounted on the left side wall, and a pair of linear bearings 211 are provided on the left side wall, with the pair of linear bearings 211 located on both sides of the cylinder 22 respectively, and a slidable longitudinal sealing guide rod 212 is provided on the linear bearing 211; the movable longitudinal sealing roller 24 includes a roller body 241, a heating tube 242, and a fixing plate 243, with the heating tube 242 disposed in the roller body 241 and the fixing plate 243 disposed on the back of the roller body 241; the longitudinal sealing guide rod 212 is connected to the fixing plate 243, and the piston rod of the cylinder 22 is engaged with the fixing plate 243; the fixed longitudinal sealing roller 23 has the same structure as the movable longitudinal sealing roller 24, and is mounted on the right side wall.

[0028] In this embodiment, the fixing frame 21 adopts a flat-bottomed U-shaped structure. This structure has good stability and strength, and can reliably support components such as the cylinder 22, the fixed longitudinal sealing roller 23, and the movable longitudinal sealing roller 24, ensuring that the entire mechanism will not deform or shake under high-speed operation and high pressure. Meanwhile, a pair of linear bearings 211 on the left side wall provide precise guidance for the longitudinal sealing guide rod 212, allowing the movable longitudinal sealing roller 24 to smoothly approach or move away from the fixed longitudinal sealing roller 23 along a straight line under the drive of the cylinder 22. This ensures a uniform distance between the two rollers, thereby improving the stability and consistency of the sealing quality. The movable longitudinal sealing roller 24 and the fixed longitudinal sealing roller 23 have the same structure, and both have heating tubes 242 installed in the roller body 241. The heat generated by the heating tubes 242 is evenly transferred to the packaging film through the roller body 241, ensuring uniform heating of the packaging film and meeting the requirements for rapid heating during high-speed packaging. The longitudinal sealing guide rod 212 is connected to the fixed plate 243 of the movable longitudinal sealing roller 24, and the piston rod of the cylinder 22 is engaged with the fixed plate 243. This connection method ensures that the cylinder 22 can effectively drive the movable longitudinal sealing roller 24, and also facilitates disassembly and installation during equipment maintenance or component replacement. The engagement method makes the connection between the piston rod and the fixed plate 243 firm and reliable, capable of withstanding large tensile and compressive forces, while also facilitating quick separation and assembly by operators, thus improving maintenance efficiency.

[0029] Preferably, the cylinder 22 is a high-temperature resistant cylinder 22. Because the heating module 2 generates high temperatures during operation, ordinary cylinders 22 may experience problems such as aging of seals, decreased lubrication performance, and deformation of components under such conditions, affecting their normal operation and service life. The high-temperature resistant cylinder 22, however, can withstand the high temperatures generated by the heating module 2, ensuring stable and reliable operation even under prolonged high-temperature working conditions, maintaining the performance and precision of the cylinder 22, and ensuring the accurate and smooth movement of the movable longitudinal sealing roller 24.

[0030] Preferably, the mounting plate 31 is provided with a first bearing seat 311 and a second bearing seat 312; the first bearing seat 311 is fixedly installed, and a main shaft 313 is provided on the first bearing seat 311. One end of the main shaft 313 is connected to the drive motor 32, and the other end is connected to the active sealing wheel 33; the second bearing seat 312 is provided with a rotatable driven shaft 314, and the driven shaft 314 is connected to the passive sealing wheel 34. In this embodiment, the bearing seats can reduce the shaking and friction of the shaft during rotation. By providing the main shaft 313 on the first bearing seat 311 and the driven shaft 314 on the second bearing seat 312, the rotation of the active sealing wheel 33 and the passive sealing wheel 34 is made more stable. One end of the main shaft 313 is connected to the drive motor 32, and the other end is directly connected to the active sealing wheel 33. The power of the drive motor 32 can be efficiently and directly transmitted to the active sealing wheel 33, driving it to rotate at high speed. Then, through cooperation with the passive sealing wheel 34, the packaging material can be quickly sealed.

[0031] Preferably, the mounting plate 31 is provided with a rotating shaft 315, a limiting screw 316, and an adjusting device 4; the second bearing seat 312 is rotatably connected to the mounting plate 31 via the rotating shaft 315, and a lever is provided on the side of the second bearing seat 312; the limiting screw 316 is configured to cooperate with the lever; one end of the lever is provided with a first spring 5; the adjusting device 4 includes a handle 41, a switch sleeve 42, a switch shaft 43, and a switch plate 44, and the switch plate 44 is provided with a second spring 45; the switch sleeve 42 is connected to the mounting plate 31, the switch shaft 43 is rotatably mounted on the switch sleeve 42, one end of the switch shaft 43 is connected to the handle 41, and the other end is connected to the switch plate 44, and the switch plate 44 is configured to cooperate with the lever.

[0032] In this embodiment, when the position of the driven sealing wheel needs to be adjusted, the handle 41 is rotated. The handle 41 drives the switch shaft 43 to rotate on the switch screw sleeve 42, and the switch plate 44 connected to the other end of the switch shaft 43 rotates accordingly. Since the switch plate 44 is provided with a second spring 45, during the rotation, the second spring 45 will generate a certain elastic force, so that the switch plate 44 contacts the lever and remains stable after rotating to a certain angle.

[0033] When the lever is activated, the second bearing seat 312 is rotatably connected to the mounting plate 31 via the rotating shaft 315. Therefore, the second bearing seat 312 will rotate around the rotating shaft 315 as the lever rotates, thereby changing the distance between the passive sealing wheel 34 and the active sealing wheel 33. This allows the passive sealing wheel 34 and the active sealing wheel 33 to open and close, facilitating the cleaning of the film or the maintenance of the equipment.

[0034] During adjustment, the first spring 5 acts as a buffer and reset mechanism. Under normal operating conditions, the first spring 5 acts on the lever to stabilize the position of the second bearing seat 312, that is, to maintain a stable position between the passive sealing wheel 34 and the active sealing wheel 33, thus better pressing the packaging film. To better control the position of the lever driven by the first spring 5, this embodiment uses a limiting screw 316 in conjunction with the lever to restrict further rotation of the second bearing seat 312, ensuring that the distance between the passive sealing wheel 34 and the active sealing wheel 33 remains stable to accommodate the sealing requirements of packaging materials of different thicknesses.

[0035] Preferably, the lever includes a support arm 312a, a first vertical plate 312b, and a second vertical plate 312c. One end of the support arm 312a is connected to the second bearing seat 312, and the other end is connected to the second vertical plate 312c. The second vertical plate 312c is used to connect the first spring 5. The first vertical plate 312b is disposed on the top surface of the support arm 312a and is configured to cooperate with the limiting screw 316. In this embodiment, the first vertical plate 312b is disposed on the top surface of the support arm 312a and cooperates with the limiting screw 316, which can control the rotation angle of the lever, thereby limiting the position of the passive sealing wheel 34 and preventing the packaging film from wrinkling or breaking due to excessive rotation of the lever.

[0036] Preferably, the bottom of the mounting plate 31 is provided with a guide module 6, which includes a flanger 61, an edge guide 62, and a third spring 63. The flanger 61 is hinged to the mounting plate 31 via a hinge; the edge guide 62 is disposed on the flanger 61, and the edge guide 62 is used to guide the longitudinal seal formed after the film is sealed to be close to the packaging bag. The flanger 61 is used to press the longitudinal seal against the packaging bag; the third spring 63 is used to drive the flanger 61 to squeeze the packaging bag. In this embodiment, the edge guide 62 can accurately guide the longitudinal seal formed after the film is sealed to be close to the packaging bag. The flanger 61 is hinged to the mounting plate 31 via a hinge and can rotate flexibly. During operation, it can press the longitudinal seal against the packaging bag, so that the longitudinal seal is tightly fitted to the packaging bag, improving the aesthetics of the packaging. The third spring 63 provides a buffer when the flanger 61 squeezes the packaging bag, preventing excessive pressure from causing damage or deformation. Simultaneously, the spring can adaptively adjust the pressure according to the thickness and material of the packaging bag, ensuring good longitudinal sealing under various packaging conditions.

[0037] Preferably, the frame 1 includes an adjusting plate 11 and a horizontal plate 12. A pair of parallel linear optical axes 13 are provided between the adjusting plate 11 and the horizontal plate 12. One end of the linear optical axis 13 is fixedly connected to the adjusting plate 11, and the other end is provided with a clamping block 14. The clamping block 14 is rotatably connected to the horizontal plate 12. A slidable connecting seat 15 is provided on the linear optical axis 13. The connecting seat 15 is used to connect to the packaging machine. An adjusting screw 16 is threadedly connected to the adjusting plate 11. One end of the adjusting screw 16 is provided with a handwheel 17, and the other end is provided with a rotatable rotating seat 18. The rotating seat 18 is connected to the packaging machine.

[0038] In this embodiment, rotating the handwheel 17 drives the adjusting screw 16 to rotate. Since the adjusting screw 16 is threadedly connected to the adjusting plate 11, the rotation of the screw causes the adjusting plate 11 to move along the length of the linear optical axis 13. This allows for flexible adjustment of the position of the frame 1 on the packaging machine to adapt to different packaging needs and working scenarios. For example, when it is necessary to change the feeding position of the packaging material or adjust the relative position of the sealing mechanism with other components, simply rotating the handwheel 17 can achieve this quickly.

[0039] Furthermore, the horizontal plate 12 is used to install the heating module 2, and the sealing module 3 is connected to the heating module 2. The two modules are sequentially connected to the horizontal plate 12. To facilitate maintenance of the longitudinal sealing mechanism, this embodiment uses a clamping block 14 to connect the linear optical axis 13 to the horizontal plate 12, and the clamping block 14 and the horizontal plate 12 have a rotatable structure. With the above structural setting, one end of the horizontal plate 12 can be rotatably connected to the clamping block 14 through a pin or other pluggable shaft. When the pin or other pluggable shaft is removed, the horizontal plate 12 can be unlocked from one of the linear optical axes 13, and then the horizontal plate 12, as well as the heating module 2 and the sealing module 3 installed on the horizontal plate 12, can be flipped over and removed for easy maintenance of the equipment.

[0040] Preferably, the drive motor 32 is a servo motor.

[0041] Preferably, the surface of the active sealing wheel 33 is provided with a grid-like anti-slip texture, and the surface of the passive sealing wheel 34 is provided with a rack-like anti-slip texture. The rack-like anti-slip texture on the passive sealing wheel 34 and the grid-like anti-slip texture on the active sealing wheel 33 cooperate with each other to better achieve the clamping and transmission of the film, so that the film can be transported more stably during the sealing process.

[0042] Compared with existing technologies, the advantages of this invention are as follows: This invention uses a heating module and a sealing module mounted on the frame. The film is heated to a high temperature by the heating module and then sealed by the active and passive sealing rollers. The cylinder can flexibly adjust the distance between the movable and fixed longitudinal sealing rollers, allowing for rapid adjustment of the spacing based on the film thickness, thus improving the heating effect. The sealing module uses a drive motor to rotate the active sealing roller, which, together with the passive sealing roller, compacts and shapes the heated film, improving the sealing quality. The adjustment device allows for manual control of the opening and closing of the passive sealing roller, facilitating debugging and maintenance. This invention has a compact structure, occupies little space, has a fast sealing speed, and can work continuously without interruption, meeting the longitudinal sealing requirements of high-speed continuous packaging machines.

[0043] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A high-speed longitudinal sealing mechanism, characterized in that, The machine includes a frame (1), a heating module (2), and a sealing module (3); the frame is connected to a packaging machine, the heating module is installed on the frame, and the sealing module is installed below the heating module; the heating module includes a fixed frame (21), and a cylinder (22), a fixed longitudinal sealing roller (23), and a movable longitudinal sealing roller (24) provided on the fixed frame; the cylinder is connected to the movable longitudinal sealing roller and drives the movable longitudinal sealing roller to move closer to or away from the fixed longitudinal sealing roller; the sealing module includes a mounting plate (31), and a drive motor (32), an active sealing wheel (33), and a passive sealing wheel (34) provided on the mounting plate; the drive motor drives the active sealing wheel to rotate, and the active sealing wheel and the passive sealing wheel are arranged opposite to each other; The mounting plate is provided with a first bearing seat (311) and a second bearing seat (312); the first bearing seat is fixedly installed and has a main shaft (313) on it, one end of which is connected to the drive motor and the other end is connected to the active sealing wheel; the second bearing seat is provided with a rotatable driven shaft (314) which is connected to the passive sealing wheel; The mounting plate is provided with a rotating shaft (315), a limiting screw (316), and an adjusting device (4); the second bearing seat is rotatably connected to the mounting plate via the rotating shaft, and a lever is provided on the side of the second bearing seat; the limiting screw is configured to cooperate with the lever; a first spring (5) is provided at one end of the lever; the adjusting device includes a handle (41), a switch sleeve (42), a switch shaft (43), and a switch plate (44), and a second spring (45) is provided on the switch plate; the switch sleeve is connected to the mounting plate, the switch shaft is rotatably mounted on the switch sleeve, one end of the switch shaft is connected to the handle, and the other end is connected to the switch plate, and the switch plate is configured to cooperate with the lever.

2. The high-speed longitudinal sealing mechanism according to claim 1, characterized in that, The fixed frame has a flat-bottomed U-shaped cross-section, which includes a left side wall and a right side wall. A pair of linear bearings (211) are provided on the left side wall of the cylinder, located on opposite sides of the cylinder. A slidable longitudinal sealing guide rod (212) is provided on each linear bearing. The movable longitudinal sealing roller includes a roller body (241), a heating tube (242), and a fixing plate (243). The heating tube is located within the roller body, and the fixing plate is located on the back of the roller body. The longitudinal sealing guide rod is connected to the fixing plate, and the piston rod of the cylinder is engaged with the fixing plate. The fixed longitudinal sealing roller has the same structure as the movable longitudinal sealing roller, and it is installed on the right side wall.

3. The high-speed longitudinal sealing mechanism according to claim 2, characterized in that, The cylinder is a high-temperature resistant cylinder.

4. The high-speed longitudinal sealing mechanism according to claim 1, characterized in that, The lever includes a support arm (312a), a first vertical plate (312b), and a second vertical plate (312c). One end of the support arm is connected to the second bearing seat, and the other end is connected to the second vertical plate. The second vertical plate is used to connect the first spring. The first vertical plate is located on the top surface of the support arm and is configured to cooperate with the limiting screw.

5. The high-speed longitudinal sealing mechanism according to claim 1, characterized in that, The bottom of the mounting plate is provided with a guide module (6), which includes a flanger (61), an edge guide (62) and a third spring (63). The flanger is hinged to the mounting plate via a hinge. The edge guide is located on the flanger and is used to guide the longitudinal seal formed after the film is sealed to be close to the packaging bag. The flanger is used to press the longitudinal seal against the packaging bag. The third spring is used to drive the flanger to squeeze the packaging bag.

6. The high-speed longitudinal sealing mechanism according to claim 1, characterized in that, The frame includes an adjusting plate (11) and a horizontal plate (12). A pair of parallel linear optical axes (13) are provided between the adjusting plate and the horizontal plate. One end of the linear optical axis is fixedly connected to the adjusting plate, and the other end is provided with a clamping block (14). The clamping block is rotatably connected to the horizontal plate. A slidable connecting seat (15) is provided on the linear optical axis. The connecting seat is used to connect to the packaging machine. An adjusting screw (16) is threadedly connected to the adjusting plate. One end of the adjusting screw is provided with a handwheel (17), and the other end is provided with a rotatable rotating seat (18). The rotating seat is connected to the packaging machine.

7. The high-speed longitudinal sealing mechanism according to claim 1, characterized in that, The drive motor is a servo motor.

8. The high-speed longitudinal sealing mechanism according to claim 1, characterized in that, The surface of the active sealing wheel is provided with a grid-like anti-slip texture, and the surface of the passive sealing wheel is provided with a toothed anti-slip texture.

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