A high speed cross-seal mechanism

Abstract

The utility model discloses a high -speed cross -sealing mechanism for packaging machine, its characterized in that, including fixed plate, sliding mechanism, buffer mechanism, lift connecting rod mechanism, open -and -close connecting rod mechanism, front cross -sealing roller and rear cross -sealing roller, through setting lift connecting rod mechanism to take the reciprocating lift of fixed plate, make each part on fixed plate can with the conveying rhythm of packaging bag go up and down movement, open -and -close connecting rod mechanism drives front cross -sealing roller and rear cross -sealing roller reciprocating motion in the lift process, realize to packaging bag carries out the transverse sealing mouth operation, in addition, buffer mechanism connects fixed plate and packaging machine, can effectively buffer the impact force in operation, reduce vibration and noise, reduce the inertia demand of lift connecting rod mechanism, promote cross -sealing stability. The utility model can effectively reduce the vibration and impact in the operation process, and the overall structure is compact and reasonable, and the space is less, and the internal equipment layout of packaging machine is convenient, and the flexibility is strong.

Description

Technical Field

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

[0002] The horizontal sealing mechanism is the component in a packaging machine responsible for sealing the packaging bag horizontally during the packaging process. Most existing horizontal sealing mechanisms use cylinders to drive the opening and closing of the sealing rollers to achieve heat-press sealing of the bag opening. Some packaging machines are also equipped with cylinders to drive the horizontal sealing mechanism to rise and fall together with the packaging bag, thereby increasing packaging speed. However, these functions require a specific air source, resulting in a complex air supply structure. This presents numerous inconveniences in the compact packaging machine's wiring, and the stability of the sealing and lifting actions is easily affected by compressed air pressure. Furthermore, the mechanism generates significant noise and is prone to malfunctions, ultimately reducing packaging efficiency. Utility Model Content

[0003] This utility model provides a high-speed horizontal 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 horizontal sealing mechanism for use in a packaging machine, comprising a fixed plate, a sliding mechanism, a buffer mechanism, a lifting linkage mechanism, an opening and closing linkage mechanism, a front horizontal sealing roller, and a rear horizontal sealing roller; the fixed plate is vertically connected to the packaging machine via the sliding mechanism; the lifting linkage mechanism is connected to the bottom of the fixed plate and is used to drive the fixed plate to move up and down on the sliding mechanism; the opening and closing linkage mechanism is disposed on the fixed plate, and the front horizontal sealing roller and the rear horizontal sealing roller are respectively disposed on the opening and closing linkage mechanism, the opening and closing linkage mechanism driving the front horizontal sealing roller and the rear horizontal sealing roller to move closer to or further away from each other; the buffer mechanism is installed on the fixed plate and connected to the packaging machine.

[0004] Preferably, the lifting linkage mechanism includes a first motor, a first reducer, a crank, a first connecting rod, and a connecting rod seat; the output end of the first motor is connected to the first reducer, the output end of the first reducer is connected to the crank, one end of the first connecting rod is rotatably connected to the crank, and the other end is rotatably connected to the connecting rod seat; the connecting rod seat is connected to the bottom of the fixed plate.

[0005] Preferably, the buffer mechanism includes a pair of buffer units symmetrically arranged on both sides of the fixed plate; each buffer unit includes a spring seat, a tension spring, and an adjusting screw; one end of the spring seat is connected to the fixed plate, and the other end is connected to the tension spring; one end of the adjusting screw is connected to the tension spring, and the other end is connected to the packaging machine.

[0006] Preferably, the first reducer is a worm gear reducer.

[0007] Preferably, the opening and closing linkage mechanism includes a sliding frame and a linkage assembly; the sliding frame is slidably connected to the fixed plate via several linear bearings; a connecting plate is slidably provided on the sliding frame, and the front horizontal sealing roller is disposed on the connecting plate; the rear horizontal sealing roller is disposed at the rear end of the sliding frame and is arranged opposite to the front horizontal sealing roller; the linkage assembly includes a second motor, a second reducer, a swing arm, a second linkage, and a third linkage; the output end of the second motor is connected to the second reducer, the second reducer is installed at the bottom of the fixed plate, and its output end is connected to the swing arm; one end of the second linkage is rotatably connected to the swing arm, and the other end is rotatably connected to the connecting plate; one end of the third linkage is rotatably connected to the swing arm, and the other end is rotatably connected to the front end of the sliding frame.

[0008] Preferably, the front horizontal sealing roller is provided with a front heating tube and a knife groove; the rear horizontal sealing roller is provided with a rear heating tube and a cutter; the rear end of the sliding frame is provided with a cylinder; the piston rod of the cylinder is connected to the cutter; and the cutter can be inserted into the knife groove when it extends.

[0009] Preferably, the second motor is a servo motor, and the second reducer is a planetary gear reducer.

[0010] Preferably, the sliding mechanism includes two symmetrically arranged sliding units, each sliding unit including a linear guide rail, a slider, and a mounting base; the slider is connected to the fixed plate through the mounting base, the linear guide rail is slidably connected to the slider, and the linear guide rail is fixedly installed inside the packaging machine.

[0011] Preferably, it further includes a height monitoring device; the height monitoring device includes a bracket, on which a first photoelectric sensor and a second photoelectric sensor are provided, and a sensing block is provided on the side of the fixing plate, the sensing block being respectively configured to cooperate with the first photoelectric sensor and the second photoelectric sensor.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model uses a lifting linkage mechanism to reciprocate the lifting of the fixed plate, allowing the components on the fixed plate to move up and down in rhythm with the conveying of the packaging bag. During the lifting process, the opening and closing linkage mechanism drives the front and rear horizontal sealing rollers to reciprocate, achieving horizontal sealing of the packaging bag. Furthermore, the buffer mechanism connects the fixed plate to the packaging machine, effectively buffering the impact force during operation, reducing vibration and noise, lowering the inertia requirement of the lifting linkage mechanism, and improving horizontal sealing stability. This utility model, by employing a linkage structure to convert rotational motion into reciprocating lifting and opening motion, effectively reduces vibration and impact during operation, improves the operating accuracy and service life of the equipment, enables high-speed packaging operations, and has a compact and reasonable overall structure, occupying little space and facilitating the internal equipment layout of the packaging machine, offering high flexibility. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the high-speed horizontal sealing mechanism according to an embodiment of the present utility model;

[0014] Figure 2 This is a structural diagram of the high-speed horizontal sealing mechanism according to another perspective of an embodiment of the present utility model;

[0015] Figure 3 This is a side view of the high-speed horizontal sealing mechanism according to an embodiment of the present utility model;

[0016] Figure 4 This is a top view of the high-speed horizontal sealing mechanism according to an embodiment of the present utility model;

[0017] Figure 5 This is a bottom view of the high-speed horizontal sealing mechanism according to an embodiment of the present utility model;

[0018] exist Figures 1 to 5 In the diagram, the correspondence between the component names and the drawing numbers is as follows:

[0019] 1--Fixed plate, 2--Sliding mechanism, 21--Linear guide rail, 22--Slider, 23--Mounting base, 3--Buffer mechanism, 31--Spring pull seat, 32--Tension spring, 33--Adjusting screw, 4--Lifting linkage mechanism, 41--First motor, 42--First reducer, 43--Crank, 44--First connecting rod, 45--Connecting rod seat, 5--Opening and closing linkage mechanism, 51--Sliding frame, 52--Connecting plate, 53--Second motor, 54--Second reducer, 55--Swing arm, 56--Second connecting rod, 57--Third connecting rod, 6--Front horizontal sealing roller, 61--Front heating element, 7--Rear horizontal sealing roller, 71--Rear heating element, 72--Cutter, 73--Cylinder, 8--Linear bearing. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] Please refer to Figures 1 to 5 This utility model provides a high-speed horizontal sealing mechanism for use in a packaging machine, including a fixed plate 1, a sliding mechanism 2, a buffer mechanism 3, a lifting linkage mechanism 4, an opening and closing linkage mechanism 5, a front horizontal sealing roller 6, and a rear horizontal sealing roller 7. The fixed plate 1 is vertically connected to the packaging machine via the sliding mechanism 2. The lifting linkage mechanism 4 is connected to the bottom of the fixed plate 1 and is used to drive the fixed plate 1 to move up and down on the sliding mechanism 2. The opening and closing linkage mechanism 5 is disposed on the fixed plate 1, and the front horizontal sealing roller 6 and the rear horizontal sealing roller 7 are respectively disposed on the opening and closing linkage mechanism 5. The opening and closing linkage mechanism 5 drives the front horizontal sealing roller 6 and the rear horizontal sealing roller 7 to move closer to or further away from each other. The buffer mechanism 3 is installed on the fixed plate 1 and connected to the packaging machine.

[0024] In this embodiment of the invention, the fixed plate 1 is used to install and connect various devices. The sliding mechanism 2 is connected to the fixed plate 1 and the packaging machine, allowing the fixed plate 1 to slide within the packaging machine. Combined with the lifting linkage mechanism 4, the movement of the fixed plate 1 can be precisely controlled. When the lifting linkage mechanism 4 is activated, it can drive the fixed plate 1 to rise or fall within the packaging machine, enabling the fixed plate 1 and the devices mounted on it to move to the sealing position of the packaging bag for horizontal sealing. Through this structural design, the fixed plate 1, precisely controlled by the lifting linkage mechanism 4, can well adapt to the sealing requirements of different packaging sizes. During the lifting process, due to the weight of the fixed plate 1 and the devices, a certain impact will occur. By setting up a buffer mechanism 3, which connects the fixed plate 1 to the packaging machine, these impact forces can be absorbed and buffered, preventing wrinkling or even damage to the packaging bag. This also reduces damage to the lifting linkage mechanism 4, lowers the inertia requirement of the lifting linkage mechanism 4, and ensures the stability and reliability of the horizontal sealing process.

[0025] When the packaging machine is running, when the packaging bag is conveyed to the horizontal sealing position, the opening and closing linkage mechanism 5 activates, causing the front horizontal sealing roller 6 and the rear horizontal sealing roller 7 to move closer together, clamping the packaging bag between the two rollers for heat sealing. During heat sealing, the lifting linkage mechanism 4 drives the fixed plate 1 to descend synchronously with the packaging bag, continuously pressing the packaging bag during the descent to ensure more thorough fusion of the packaging film and improve the sealing effect. After sealing, the rear horizontal sealing roller 7 cuts the packaging bag, and then the opening and closing linkage mechanism 5 drives the front and rear horizontal sealing rollers 7 to move away from each other, releasing the packaging bag. Subsequently, according to the needs of the next packaging task, the lifting linkage mechanism 4 can again drive the fixed plate 1 to rise to the preset height, preparing for the next round of horizontal sealing operations.

[0026] Compared to the traditional cylinder 73 transmission structure, this embodiment uses a sliding mechanism 2 and a lifting linkage mechanism 4 to make the fixed plate 1 adjustable, allowing for flexible adjustment of the horizontal sealing position to meet the sealing requirements of packaging bags of different sizes. This results in more stable transmission and a more compact structure. Secondly, the opening and closing linkage mechanism 5 can move the front and rear horizontal sealing rollers 7 closer or further away, ensuring stable pressing and higher transmission efficiency. In addition, the buffer mechanism 3 connects the fixed plate 1 to the packaging machine, effectively buffering the impact force during operation, reducing vibration and noise, and improving equipment stability. Finally, the overall structure of this embodiment is compact and reasonable, reducing the space occupied inside the packaging machine, making the layout of the packaging machine more flexible and facilitating subsequent maintenance and repair.

[0027] Preferably, the lifting linkage mechanism 4 includes a first motor 41, a first reducer 42, a crank 43, a first connecting rod 44, and a connecting rod seat 45; the output end of the first motor is connected to the first reducer 42, the output end of the first reducer 42 is connected to the crank 43, one end of the first connecting rod 44 is rotatably connected to the crank 43, and the other end is rotatably connected to the connecting rod seat 45; the connecting rod seat 45 is connected to the bottom of the fixed plate 1.

[0028] In this embodiment, the first motor 41 is connected to the crank 43 via the first reducer 42. The reducer reduces the motor's output speed while increasing torque, making power transmission smoother and providing stable power support for the lifting and lowering of the fixed plate 1. This ensures accurate adjustment of the fixed plate 1's position under different load conditions. This embodiment utilizes the rotational connection between the crank 43 and the first connecting rod 44 to convert the rotational motion of the first motor 41 into the linear up-and-down motion of the connecting rod seat 45, thereby driving the fixed plate 1 to reciprocate up-and-down motion on the sliding mechanism 2. This motion conversion method has high precision and can effectively ensure the accuracy of the horizontal sealing mechanism at different height positions, meeting the requirements of different packaged products for the horizontal sealing position. The lifting linkage mechanism 4 in this embodiment has a relatively simple structure, clear connection methods between components, is easy to manufacture, install, and maintain, has high reliability, and is conducive to the long-term stable operation of the packaging machine.

[0029] Preferably, the buffer mechanism 3 includes a pair of buffer units symmetrically arranged on both sides of the fixed plate 1. Each buffer unit includes a spring seat 31, a tension spring 32, and an adjusting screw 33. One end of the spring seat 31 is connected to the fixed plate 1, and the other end is connected to the tension spring 32. One end of the adjusting screw 33 is connected to the tension spring 32, and the other end is connected to the packaging machine. In this embodiment, the symmetrical arrangement of the pair of buffer units on both sides of the fixed plate 1 ensures a uniform distribution of buffering force, maintaining the fixed plate 1's balance under impact and preventing tilting or displacement due to uneven force. During buffering, the elastic deformation of the tension spring 32 absorbs and buffers the impact force generated during the horizontal sealing process, effectively reducing equipment vibration and noise, protecting equipment components, and extending equipment lifespan. The adjusting screw 33 allows the preload of the tension spring 32 to be adjusted according to actual needs. Under different packaging materials, packaging speeds, or horizontal sealing pressures, the spring tension can be changed by adjusting the screw 33 to optimize the buffering effect and adapt to various working conditions.

[0030] Preferably, the first reducer 42 is a worm gear reducer. The worm gear reducer can provide a large transmission ratio. When the speed of the first motor 41 is constant, it can make the crank 43 obtain a lower speed, thereby realizing a slower and more stable lifting and lowering movement of the fixed plate 1.

[0031] Preferably, the opening and closing linkage mechanism 5 includes a sliding frame 51 and a linkage assembly; the sliding frame 51 is slidably connected to the fixed plate 1 via a plurality of linear bearings 8; a connecting plate 52 is slidably provided on the sliding frame 51, and the front horizontal sealing roller 6 is provided on the connecting plate 52; the rear horizontal sealing roller 7 is provided at the rear end of the sliding frame 51 and is arranged opposite to the front horizontal sealing roller 6; the linkage assembly includes a second motor 53, a second reducer 54, a swing arm 55, a second connecting rod 56 and a third connecting rod 57; the output end of the second motor 53 is connected to the second reducer 54, the second reducer 54 is installed at the bottom of the fixed plate 1, and its output end is connected to the swing arm 55; one end of the second connecting rod 56 is rotatably connected to the swing arm 55, and the other end is rotatably connected to the connecting plate 52; one end of the third connecting rod 57 is rotatably connected to the swing arm 55, and the other end is rotatably connected to the front end of the sliding frame 51.

[0032] In this embodiment, the sliding frame 51 consists of two end plates and a pair of linear optical axes, forming a rectangular frame structure. It is then connected to the fixed plate 1 via multiple linear bearings 8, ensuring high sliding accuracy and low resistance for the sliding frame 51 on the fixed plate 1. The second motor 53 is connected to the swing arm 55 via a second reducer 54. The reducer lowers the rotational speed and increases the torque, providing stable power for the rotation of the swing arm 55. This ensures the stability of the movement of the sliding frame 51 and the connecting plate 52 driven by the second connecting rod 56 and the third connecting rod 57, reliably completing the opening and closing actions of the front and rear horizontal sealing rollers 7. The rotation of the swing arm 55 is converted into linear motion of the sliding frame 51 and the connecting plate 52 via the second connecting rod 56 and the third connecting rod 57, thereby realizing the opening and closing actions of the front and rear horizontal sealing rollers 7. This linkage transmission method is flexible and can achieve relatively complex movements within a limited space, adapting to the requirements of different packaging sizes and materials for the opening and closing amplitude of the horizontal sealing rollers. By adjusting the control parameters of the second motor 53, the rotation angle and speed of the swing arm 55 can be easily adjusted, thereby precisely controlling the opening and closing degree and movement speed of the front and rear horizontal sealing rollers 7 to meet the needs of different packaging processes. For example, for packaging materials of different thicknesses, the opening and closing amplitude and closing speed of the horizontal sealing rollers can be adjusted accordingly to improve the adaptability and efficiency of packaging.

[0033] The working process of this embodiment is as follows: The second motor 53 starts, and its output power is transmitted to the swing arm 55 after the speed and torque are adjusted by the second reducer 54, causing the swing arm 55 to swing. When the swing arm 55 swings, the second connecting rod 56 and the third connecting rod 57 connected to it move accordingly. The third connecting rod 57 pulls the sliding frame 51. Since the sliding frame 51 is slidably connected to the fixed plate 1 through the linear bearing 8, it can ensure smooth sliding. At the same time, the second connecting rod 56 pushes the connecting plate 52 to slide on the sliding frame 51. The front horizontal sealing roller 6 is installed on the connecting plate 52, and the rear horizontal sealing roller 7 is located at the rear end of the sliding frame 51. As the sliding frame 51 and the connecting plate 52 move, the front horizontal sealing roller 6 and the rear horizontal sealing roller 7 move closer or further away from each other, realizing the clamping and releasing action of the packaging material.

[0034] Preferably, the front horizontal sealing roller 6 is provided with a front heating tube 61 and a knife groove; the rear horizontal sealing roller 7 is provided with a rear heating tube 71 and a cutter 72; the rear end of the sliding frame 51 is provided with a cylinder 73; the piston rod of the cylinder 73 is connected to the cutter 72; and the cutter 72 can be inserted into the knife groove when it extends.

[0035] In this embodiment, the front heating element 61 on the front horizontal sealing roller 6 and the rear heating element 71 on the rear horizontal sealing roller 7 are energized and preheated to reach a suitable sealing temperature. When the packaging bag is conveyed between the front and rear horizontal sealing rollers 7, the opening and closing linkage mechanism 5 drives the front and rear horizontal sealing rollers 7 to move closer together, clamping the packaging bag. At this time, the heat emitted by the front and rear heating elements 71 is transferred to the packaging material, causing it to melt and achieve heat sealing. When it is necessary to cut the packaging material, the cylinder 73 at the rear end of the sliding frame 51 is activated, and its piston rod pushes the cutter 72 forward. The cutter 72 is precisely inserted into the knife groove of the front horizontal sealing roller 6, and using the sharp edge of the cutter 72, the packaging material is cut at the same time as the heat sealing is completed, completing one horizontal sealing and cutting operation of the packaging. Subsequently, the piston rod of the cylinder 73 retracts, the cutter 72 returns to its original position, waiting for the next working command, the front and rear horizontal sealing rollers 7 separate, and the packaging bag continues to be conveyed into the next cycle.

[0036] Preferably, the second motor 53 is a servo motor, and the second reducer 54 is a planetary gear reducer. In this embodiment, the servo motor can precisely control the speed, position, and torque. In the opening and closing linkage mechanism 5, the opening and closing positions and speeds of the front and rear horizontal sealing rollers 7 can be precisely controlled, ensuring the positional accuracy and consistency of the horizontal sealing action under different packaging materials and specifications, thereby improving packaging quality. The planetary gear reducer is characterized by its small size and light weight, enabling a large transmission ratio within a limited space. In the opening and closing linkage mechanism 5, installation space can be saved, making the overall structure more compact and facilitating equipment layout and design.

[0037] Preferably, the sliding mechanism 2 includes two symmetrically arranged sliding units. Each sliding unit includes a linear guide rail 21, a slider 22, and a mounting base 23. The slider 22 is connected to the fixed plate 1 via the mounting base 23. The linear guide rail 21 is slidably connected to the slider 22, and the linear guide rail 21 is fixedly installed inside the packaging machine. In this embodiment, the linear guide rail 21 is fixedly installed inside the packaging machine, providing precise linear motion guidance for the slider 22. The slider 22 is connected to the mounting base 23, and the fixed plate 1 is also connected to the mounting base 23, forming a stable sliding connection between the fixed plate 1 and the packaging machine. This ensures that when the lifting linkage mechanism 4 moves, the fixed plate 1 can only slide along the direction of the linear guide rail 21. Furthermore, the two symmetrically arranged sliding units ensure the smoothness and consistency of the movement.

[0038] Preferably, the device further includes a height monitoring device. The height monitoring device includes a bracket, on which a first photoelectric sensor and a second photoelectric sensor are mounted. A sensing block is located on the side of the fixed plate 1, and the sensing block is respectively configured to cooperate with the first photoelectric sensor and the second photoelectric sensor. By mounting the first and second photoelectric sensors on the bracket and cooperating with the sensing block on the side of the fixed plate 1, the height position of the fixed plate 1 can be accurately monitored. When the sensing block passes the first or second photoelectric sensor, the sensor generates a corresponding signal to determine whether the fixed plate 1 has reached the set height position, thereby achieving precise control of the height of the front and rear horizontal sealing rollers 7, ensuring the accuracy of the horizontal sealing position, and improving packaging quality.

[0039] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model uses a lifting linkage mechanism to reciprocate the lifting of the fixed plate, allowing the components on the fixed plate to move up and down in rhythm with the conveying of the packaging bag. During the lifting process, the opening and closing linkage mechanism drives the front and rear horizontal sealing rollers to reciprocate, achieving horizontal sealing of the packaging bag. Furthermore, the buffer mechanism connects the fixed plate to the packaging machine, effectively buffering the impact force during operation, reducing vibration and noise, lowering the inertia requirement of the lifting linkage mechanism, and improving horizontal sealing stability. This utility model, by employing a linkage structure to convert rotational motion into reciprocating lifting and opening motion, effectively reduces vibration and impact during operation, improves the operating accuracy and service life of the equipment, enables high-speed packaging operations, and has a compact and reasonable overall structure, occupying little space and facilitating the internal equipment layout of the packaging machine, offering high flexibility.

[0040] 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 horizontal sealing mechanism for use in a packaging machine, characterized in that, The packaging machine includes a fixed plate (1), a sliding mechanism (2), a buffer mechanism (3), a lifting linkage mechanism (4), an opening and closing linkage mechanism (5), a front horizontal sealing roller (6), and a rear horizontal sealing roller (7). The fixed plate is connected to the packaging machine in a lifting manner through the sliding mechanism. The lifting linkage mechanism is connected to the bottom of the fixed plate and is used to drive the fixed plate to move up and down on the sliding mechanism. The opening and closing linkage mechanism is located on the fixed plate, and the front horizontal sealing roller and the rear horizontal sealing roller are respectively located on the opening and closing linkage mechanism. The opening and closing linkage mechanism drives the front horizontal sealing roller and the rear horizontal sealing roller to move closer to each other or further away from each other. The buffer mechanism is installed on the fixed plate and connected to the packaging machine.

2. The high-speed transverse sealing mechanism according to claim 1, characterized in that, The lifting linkage mechanism includes a first motor (41), a first reducer (42), a crank (43), a first connecting rod (44), and a connecting rod seat (45); the output end of the first motor is connected to the first reducer, the output end of the first reducer is connected to the crank, one end of the first connecting rod is rotatably connected to the crank, and the other end is rotatably connected to the connecting rod seat; the connecting rod seat is connected to the bottom of the fixed plate.

3. The high-speed transverse sealing mechanism according to claim 2, characterized in that, The buffer mechanism includes a pair of buffer units, which are symmetrically arranged on both sides of the fixed plate. The buffer unit includes a spring pull seat (31), a tension spring (32), and an adjusting screw (33). One end of the spring pull seat is connected to the fixed plate, and the other end is connected to the tension spring. One end of the adjusting screw is connected to the tension spring, and the other end is connected to the packaging machine.

4. The high-speed transverse sealing mechanism according to claim 2, characterized in that, The first reducer is a worm gear reducer.

5. The high-speed transverse sealing mechanism according to claim 1, characterized in that, The opening and closing linkage mechanism includes a sliding frame (51) and a linkage assembly; the sliding frame is slidably connected to the fixed plate through several linear bearings (8); a connecting plate (52) is slidably provided on the sliding frame, and the front horizontal sealing roller is provided on the connecting plate; the rear horizontal sealing roller is provided at the rear end of the sliding frame and is arranged opposite to the front horizontal sealing roller; the linkage assembly includes a second motor (53), a second reducer (54), a swing arm (55), a second connecting rod (56), and a third connecting rod (57); the output end of the second motor is connected to the second reducer, the second reducer is installed at the bottom of the fixed plate, and its output end is connected to the swing arm; one end of the second connecting rod is rotatably connected to the swing arm, and the other end is rotatably connected to the connecting plate; one end of the third connecting rod is rotatably connected to the swing arm, and the other end is rotatably connected to the front end of the sliding frame.

6. The high-speed transverse sealing mechanism according to claim 5, characterized in that, The front horizontal sealing roller is provided with a front heating tube (61) and a knife groove; the rear horizontal sealing roller is provided with a rear heating tube (71) and a cutter (72); the rear end of the sliding frame is provided with a cylinder (73); the piston rod of the cylinder is connected to the cutter; when the cutter extends, it can be inserted into the knife groove.

7. The high-speed transverse sealing mechanism according to claim 5, characterized in that, The second motor is a servo motor, and the second reducer is a planetary gear reducer.

8. The high-speed transverse sealing mechanism according to claim 1, characterized in that, The sliding mechanism includes two symmetrically arranged sliding units. Each sliding unit includes a linear guide rail (21), a slider (22), and a mounting base (23). The slider is connected to the fixed plate through the mounting base. The linear guide rail is slidably connected to the slider. The linear guide rail is fixedly installed inside the packaging machine.

9. The high-speed transverse sealing mechanism according to any one of claims 1 to 8, characterized in that, It also includes a height monitoring device; the height monitoring device includes a bracket, on which a first photoelectric sensor and a second photoelectric sensor are provided, and a sensing block is provided on the side of the fixed plate, the sensing block being respectively configured to cooperate with the first photoelectric sensor and the second photoelectric sensor.

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