Packaging machine transverse sealing mechanism

Abstract

The utility model discloses a kind of packing machine transverse sealing mechanism, including driving motor, with the driving motor through first sprocket assembly transmission connection's conveying line component, and with the conveying line component through second sprocket assembly transmission connection's transverse sealing component, the transverse sealing component includes with the second sprocket assembly transmission connection by pulley assembly, and front and rear arrangement's guide wheel unit and heat sealing unit.The utility model realizes the transmission connection of driving motor and conveying line component, transverse sealing component by first sprocket assembly and second sprocket assembly, single drive to ensure the synchronism of each component action tempo;Guiding wheel unit and heat sealing unit are driven by pulley assembly, ensure the unity of film feeding and heat sealing action, realize the linkage effect between each component by single drive source, to this end, the consistency of each component action tempo is realized, effectively avoid film accumulation or pull and other adverse phenomena, ensure transverse sealing quality.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, specifically to a horizontal sealing mechanism for a packaging machine. Background Technology

[0002] The packaging process of a pillow-type packaging machine is as follows: A pre-calculated plastic film is fed out by a feed roller and formed into a tubular bag in the bag-making section. Then, the two ends of the film are joined together, and heat and pressure are applied to both ends of the film in the transverse section for heat adhesion (i.e., transverse heat sealing). Through a supply conveyor device located at the front of the bag-making section (supply section), the packaged items are continuously inserted into the tubular film at regular intervals. The packaged items inside the tubular film continue to advance on a conveyor belt at regular intervals. At the end-sealing (also called side heat sealing) device, the film between the packaged items and the packaged items is heated. Simultaneously with the pressure heat sealing, a cutting machine cuts the film, completing the packaging process.

[0003] However, in the horizontal heat sealing process, since the horizontal sealing section and the conveyor belt of the packaged product are usually driven and controlled independently, when the transport speed of the conveyor belt is inconsistent with the heat sealing speed of the horizontal sealing section, the film is prone to accumulate or be excessively stretched in the horizontal sealing section. Film accumulation leads to sealing wrinkles and air leakage, while film stretching may cause cracking or dimensional deviation. Summary of the Invention

[0004] To overcome the above-mentioned defects, this utility model provides a horizontal sealing mechanism for a pillow packaging machine, which can eliminate film accumulation or tearing, and improve packaging quality and equipment stability.

[0005] The technical solution adopted by this utility model to solve its technical problem is a horizontal sealing mechanism for a packaging machine, including a drive motor, a conveyor assembly that is driven and connected to the drive motor through a first sprocket assembly, and a horizontal sealing assembly that is driven and connected to the conveyor assembly through a second sprocket assembly. The horizontal sealing assembly includes a guide wheel unit and a heat sealing unit that are driven and connected to the second sprocket assembly through a pulley assembly and arranged front and back.

[0006] As a further improvement of this utility model, the conveyor line assembly includes:

[0007] A conveyor frame, which is arranged along the material conveying direction;

[0008] Belt rollers, a plurality of the belt rollers are spaced apart on the conveyor frame along the conveying direction;

[0009] A main shaft roller is disposed on the conveyor frame and arranged below the plurality of belt rollers;

[0010] A conveyor belt, which is sequentially wound around the belt roller and the main shaft roller;

[0011] The first sprocket assembly includes a main sprocket disposed on the output shaft of the drive motor and a transmission sprocket disposed on the main shaft roller. The main sprocket and the transmission sprocket are driven by a roller chain meshing.

[0012] As a further improvement of this utility model, the belt rollers are provided in three parts, including two steering rollers and one tensioning roller. The two steering rollers are at the same height and are respectively located at both ends of the conveyor frame. The tensioning roller is located between the two steering rollers and is set lower than the steering rollers. Movable grooves for positioning the axial ends of the tensioning roller are respectively opened on both sides of the conveyor frame. The movable grooves are arranged along the material conveying direction.

[0013] As a further improvement of this utility model, the two ends of the main shaft roller extend axially to the outer sides of the conveying frame, and the main sprocket is disposed on one end of the main shaft roller; a support frame is provided on the side of the conveying frame facing the other end of the main shaft roller, and the transverse sealing assembly is disposed on the support frame through a mounting seat;

[0014] The second chain assembly includes a drive sprocket disposed on one side of the support frame and fixedly connected to the other end of the main shaft roller, a driven sprocket that is driven and connected to the pulley assembly, and a limiting sprocket disposed on the top of the support frame. The drive sprocket, the driven sprocket and the limiting sprocket are driven by roller chain meshing.

[0015] As a further improvement of this utility model, the mounting base is movably connected to the support frame via a lead screw assembly, the lead screw assembly comprising:

[0016] A lead screw passes vertically through the mounting base. The upper and lower ends of the lead screw are rotatably connected to the support frame via bearings, and its upper end passes upward through the support frame to connect to a handwheel.

[0017] Two guide rods are provided, which are in the same direction as the lead screw and are respectively arranged on both sides of the lead screw. The upper and lower ends of the guide rods are fixedly connected to the support frame.

[0018] The mounting base is provided with a lead screw nut that is threadedly connected to the lead screw, and a linear bearing that is slidably connected to the guide rod.

[0019] As a further improvement of this utility model, the pulley assembly is disposed on the mounting base and includes:

[0020] The pulley system has two pulleys, which are connected to the guide wheel unit and the heat sealing unit respectively via two pairs of bevel gears.

[0021] A toothed belt is wound around two pulleys;

[0022] The pulley corresponding to the heat sealing unit is coaxial with the driven sprocket and fixedly connected by a rotating shaft.

[0023] As a further improvement of this utility model, the guide wheel unit is rotatably mounted on the feed side of the mounting base, including two meshing first gears provided on the top of the mounting base, and two pressure wheels provided on the bottom of the mounting base that abut against each other and are respectively connected to the two first gears in a transmission.

[0024] The first gear, located near the pulley assembly, is connected to the corresponding pulley via a pair of bevel gears.

[0025] As a further improvement of this utility model, the heat sealing unit is rotatably mounted on the discharge side of the mounting base, including two meshing second gears disposed on the top of the mounting base, and two meshing heat sealing gears disposed on the bottom of the mounting base and respectively connected to the two second gears in a transmission.

[0026] The second gear, located near the pulley assembly, is connected to the corresponding pulley via another pair of bevel gears.

[0027] As a further improvement of this utility model, a cavity for accommodating the heating coil is opened on the side of the second gear facing the mounting base, and a heat insulation component is sleeved on the gear shaft of the second gear between the mounting base and the heating coil.

[0028] The beneficial effects of this utility model are:

[0029] 1. The drive motor is connected to the conveyor assembly and the horizontal sealing assembly through the first sprocket assembly and the second sprocket assembly, and a single drive is used to ensure the synchronization of the action rhythm of each component;

[0030] 2. The guide wheel unit and the heat sealing unit are driven by a pulley assembly to ensure the uniformity of film feeding and heat sealing actions. The linkage effect between the components is achieved through a single drive source, thereby achieving the consistency of the action rhythm of each component, effectively avoiding defects such as film accumulation or pulling, and ensuring the quality of horizontal sealing. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the pillow-type packaging machine provided by this utility model;

[0032] Figure 2 This is a schematic diagram of the horizontal sealing mechanism of this utility model;

[0033] Figure 3 This utility model Figure 2 A schematic diagram of the structure from another direction;

[0034] Figure 4This is a schematic diagram of the structure of the horizontal sealing component of this utility model.

[0035] Referring to the accompanying drawings, the following explanations are provided:

[0036] 1. Horizontal sealing mechanism; 11. Drive motor; 12. First sprocket assembly; 121. Main sprocket; 122. Transmission sprocket; 13. Conveyor line assembly; 131. Conveyor frame; 1311. Moving trough; 132. Belt roller; 1321. Directional roller; 1322. Tensioning roller; 133. Main shaft roller; 134. Conveyor belt; 14. Second chain assembly; 141. Drive sprocket; 142. Driven sprocket; 143. Limit sprocket; 15. Horizontal sealing assembly; 151. Pulley assembly; 1 511. Pulley; 1512. Toothed belt; 152. Guide wheel unit; 1521. First gear; 1522. Pressure roller; 153. Heat sealing unit; 1531. Second gear; 1532. Heat sealing gear; 1533. Heat ring; 1534. Heat insulation component; 16. Support frame; 17. Mounting base; 18. Screw assembly; 181. Screw; 182. Bearing; 183. Handwheel; 184. Guide rod; 19. Bevel gear pair; 2. Feed roller; 3. Bag maker; 4. Side sealing mechanism. Detailed Implementation

[0037] The preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Please see Figure 1 This is a schematic diagram of a pillow-type packaging machine. Its working process includes: ① First, according to the packaging size, plastic film is fed out from the feed roller 2 and guided into a cylindrical shape by the bag maker 3, with the top of the film closed for easy heat sealing. ② Then, the horizontal sealing mechanism 1 heats and pressurizes the closed portion for precise horizontal heat sealing, forming a preliminary packaging tube. ③ The supply conveyor device at the front of the bag maker (supply section) continuously and stably inserts the packaged items into the cylindrical film according to a set rhythm and interval. ④ The conveyor assembly 13 allows the cylindrical film containing the items to advance evenly and stably to the terminal heat sealing mechanism 4, where the film between adjacent packaged items is heated, pressurized, sealed, and then cut, separating the packaged products and completing the packaging process.

[0039] See Figures 2 to 4, the utility model makes technical improvements to the horizontal sealing mechanism of the existing packaging machine to eliminate the problems of film accumulation or pulling caused by the mismatch between the movement of materials and the horizontal sealing action. The horizontal sealing mechanism of this embodiment includes a driving motor 11, a conveying line assembly 13传动连接的输送线组件13、及与输送线组件13通过第二链轮组件14传动连接的横封组件15,横封组件15包括与第二链轮组件14通过带轮组件151传动连接、并前后布置的导向轮单元152和热封单元153。通过第一链轮组件12和第二链轮组件14实现驱动电机11与输送线组件13、横封组件15的传动连接,链传动凭借其传动比精准、传递功率大以及传动效率高等显著优势,能够切实保障各部件协同工作的高精度要求。同时,导向轮单元152和热封单元153通过带轮组件151传动,保证两个单元动作的统一性,进一步提高了传动的精准性和稳定性。

[0040] That is, the utility model realizes the linkage effect between components through a chain drive method with a single driving source, thereby achieving the consistency of the action beats of each component, effectively avoiding adverse phenomena such as film accumulation or pulling, and ensuring the horizontal sealing quality.

[0041] In this embodiment, according to the design plan of the length of the conveying line, three belt rollers 132 are provided in total. Specifically, it includes two turning rollers 1321 and one tensioning roller 1322. The turning roller 1321 is mainly used to change the running direction of the conveying belt to adapt to the layout requirements of the conveying line; the tensioning roller 1322 is used to adjust the tension of the conveying belt to ensure that the conveying belt maintains an appropriate tension during operation and avoid slipping or slackening. Of course, in the actual production process, the belt rollers 132 can be flexibly set to multiple according to factors such as specific production requirements, the characteristics of the conveyed materials, and the overall layout of the conveying line to meet the usage requirements under different working conditions.

[0042] It should be noted that there is an unclear part in the Chinese text you provided: "传动连接的输送线组件13、及与输送线组件13通过第二链轮组件14传动连接的横封组件15". The translated text retains this unclear expression for you. You can check and correct it according to the actual situation.Furthermore, the conveyor frame 131 in the conveyor assembly 13 is arranged along the material conveying direction. Two guide rollers 1321 are installed at the same height at both ends of the conveyor frame 131; a tension roller 1322 is positioned between these two guide rollers 1321, and its position is lower than the two guide rollers 1321. The conveyor belt 134 passes sequentially around the belt roller 132 and the main shaft roller 133, forming a complete conveying loop. To facilitate adjustment of the position of the tension roller 1322 to adjust the tension of the conveyor belt, movable grooves 1311 are provided on both sides of the conveyor frame 131 for positioning the axial ends of the tension roller 1322. The first sprocket assembly 12 consists of a main sprocket 121, a drive sprocket 122, and a roller chain (not shown in the figure) forming a transmission system. The main sprocket 121 is mounted on the output shaft of the drive motor 11, and the drive sprocket 122 is mounted on the main shaft roller 133. The main sprocket 121 and the transmission sprocket 122 are meshed and driven by a roller chain, thereby enabling the drive motor to drive the main sprocket 121, which in turn drives the transmission sprocket 122 to rotate, and finally drives the conveyor belt 134 to move.

[0043] Furthermore, to ensure the stability and reliability of power transmission, this embodiment adopts a design scheme in which the first sprocket assembly 12 and the second chain assembly 14 are arranged opposite each other on both sides of the conveyor frame. Specifically, a support frame 16 is provided on the side of the conveyor frame 131 facing the second chain assembly 14, and the transverse sealing assembly 15 is securely mounted on the support frame 16 through the mounting base 17, providing stable support for the transverse sealing action. The main shaft roller 133 extends axially to both sides of the conveyor frame 131, and the main sprocket 121 is installed at one end of the main shaft roller 133, serving as a key component for power input. The second chain assembly 14 consists of a drive sprocket 141, a driven sprocket 142, a limiting sprocket 143, and a roller chain (not shown in the figure) forming a transmission system. The drive sprocket 141 is installed at the other end of the main shaft roller 133, symmetrically distributed with the main sprocket 121 at both ends of the main shaft roller 133, achieving indirect transmission through the main shaft roller 133 and optimizing the power distribution path. The driven sprocket 142 is mounted on the pulley assembly 151 and drives the pulley assembly 151 to move through the meshing transmission of the roller chain, thereby driving the relevant actuators. The limiting sprocket 143 is mounted on the support frame 16 and located above the driven sprocket 142. Its function is to limit and guide the roller chain, prevent the chain from deviating or falling off during transmission, and ensure the stability and safety of the transmission system.

[0044] Furthermore, the mounting base 17 is movably connected to the support frame 16 via a lead screw assembly 18, thereby achieving the adjustability of the horizontal sealing assembly 15 in the vertical position to meet the usage requirements of packaging materials of different specifications. Specifically, the lead screw assembly 18 includes a lead screw that runs vertically through the mounting base 17. The upper and lower ends of the lead screw 181 are rotatably connected to the support frame 16 via bearings 182, ensuring that the lead screw 181 can rotate flexibly. The upper end of the lead screw 181 extends upward and passes through the support frame 16, connecting to a handwheel 183. The operator can drive the lead screw 181 to rotate by turning the handwheel 183. Guide rods 184 are respectively provided on both sides of the lead screw 181. The upper and lower ends of the guide rods 184 are fixedly connected to the support frame 16, providing a stable guiding effect for the movement of the mounting base 17 and preventing it from deflecting or shaking during movement. The mounting base 17 is equipped with a screw nut that is threadedly connected to the screw 181. When the screw 181 rotates under the drive of the handwheel 183, the screw nut converts the rotational motion of the screw 181 into linear motion, driving the mounting base 17 to move vertically. Simultaneously, the mounting base 17 is also equipped with a linear bearing that is slidably connected to the guide rod 184, ensuring that the mounting base 17 remains stable and accurate during movement. Through this design, the vertical position of the horizontal sealing assembly 15 can be flexibly adjusted, thereby adapting to the sealing requirements of different package sizes.

[0045] Furthermore, the pulley assembly 151 is mounted on the mounting base 17, and includes two pulleys 1511 arranged at the same height along the material conveying direction. The two pulleys 1511 are connected to the guide wheel unit 152 and the heat sealing unit 153 respectively by means of two pairs of bevel gear pairs 19, thereby accurately transmitting power to the guide wheel unit 152 and the heat sealing unit 153 to ensure their normal operation.

[0046] Toothed belts 1512 are wound around the two pulleys 1511. The toothed belts 1512 mesh with the pulleys 1511. With this meshing transmission method, the two pulleys 1511 can achieve synchronous and stable operation, thereby providing reliable power support for the guide wheel unit 152 and heat sealing unit 153 connected to them.

[0047] In this configuration, the pulley 1511 of the heat-sealing unit 153 and the driven sprocket 142 are arranged coaxially and fixedly connected by a rotating shaft. When the driven sprocket 142 rotates under the drive of the transmission system of the second chain assembly 14, its rotational power can be directly transmitted to the pulley 1511 through the rotating shaft, thereby driving the entire pulley assembly 151 to rotate, achieving efficient power transmission and ensuring that the guide wheel unit 152 and the heat-sealing unit 153 operate synchronously.

[0048] Furthermore, the guide wheel unit 152 is rotatably mounted on the feed side of the mounting base 17. It includes two meshing first gears 1521 located on the top of the mounting base 17, and two pressure rollers 1522 located on the bottom of the mounting base 17, their outer surfaces abutting each other and respectively connected to the two first gears 1521. The first gear 1521 near the pulley assembly 151 is connected to the corresponding pulley 1511 via a pair of bevel gear pairs 19. The bevel gear pairs 19 can change the direction of power transmission, causing the first gear 1521 to rotate counterclockwise. The meshing transmission of the two first gears 1521 further drives the two pressure rollers 1522 to rotate stably. At this time, the top of the folded plastic film enters the compression area between the two pressure rollers 1522. Under the continuous compression of the rotating pressure rollers 1522, the top of the plastic film is effectively compressed and flattened, and simultaneously pushed forward, providing a good foundation for subsequent heat sealing and other processing steps.

[0049] Furthermore, the heat-sealing unit 153 is rotatably mounted on the discharge side of the mounting base 17 to achieve heat-press sealing, ensuring the airtightness and integrity of the packaging. The heat-sealing unit 153 includes two meshing second gears 1531 located at the top of the mounting base 17, and two meshing heat-sealing gears 1532 located at the bottom of the mounting base 17, each meshing and drivingly connected to the two second gears 1531. The second gear 1531 near the pulley assembly 151 is connected to the corresponding pulley 1511 via another pair of bevel gear pairs 19. The bevel gear pairs 19 change the direction of power from the pulley 1511 and transmit it to the second gear 1531, causing the second gear 1531 to rotate clockwise. The two second gears 1531 mesh with each other and rotate synchronously and in opposite directions, thereby driving the two heat-sealing gears 1532 to rotate. During the rotation of the heat-sealing gears 1532, a heat-pressing operation is performed on the plastic film passing through this area, achieving sealing. Here, the bevel gear pair 19 converts the vertical rotation of the pulley into the clockwise rotation required by the second gear.

[0050] To meet the heat requirements of heat sealing, the second gear 1531 has a cavity specifically designed to accommodate the heating coil 1533 on the side facing the mounting base 17. The heating coil 1533, as a heat source, generates sufficient heat during operation and transfers it to the heat-sealing gear 1532 via the second gear 1531, thereby heat-pressing and bonding the plastic film. Simultaneously, considering the high temperature generated by the heating coil 1533 during operation, to prevent excessive heat transfer to the mounting base 17 and other components, which could affect the normal operation and service life of the equipment, a heat insulation component 1534 is fitted between the mounting base 17 and the heating coil 1533, outside the gear shaft of the second gear 1531. The heat insulation component 1534 is made of a material with good heat insulation properties, effectively blocking heat transfer and ensuring that the equipment operates in a stable and safe temperature environment.

[0051] It should be noted that in this embodiment, the choice of bearing and shaft mating method to achieve rotatable connection of components is a conventional method in the art, and therefore it is not described in detail here.

[0052] Many specific details have been set forth in the above description to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A horizontal sealing mechanism for a packaging machine, characterized in that: It includes a drive motor (11), a conveyor assembly (13) that is driven to the drive motor (11) via a first sprocket assembly (12), and a transverse sealing assembly (15) that is driven to the conveyor assembly (13) via a second sprocket assembly (14). The transverse sealing assembly (15) includes a guide wheel unit (152) and a heat sealing unit (153) that are driven to the second sprocket assembly (14) via a pulley assembly (151) and arranged in a front-to-back manner.

2. The horizontal sealing mechanism of the packaging machine according to claim 1, characterized in that, The conveyor assembly (13) includes: A conveyor frame (131) is arranged along the material conveying direction; Belt rollers (132), a plurality of said belt rollers (132) are spaced apart on the conveyor frame (131) along said conveying direction; The main shaft roller (133) is located on the conveyor frame (131) and arranged below the plurality of belt rollers (132); A conveyor belt (134) is wound around the belt roller (132) and the main shaft roller (133) in sequence. The first sprocket assembly (12) includes a main sprocket (121) located on the output shaft of the drive motor (11) and a transmission sprocket (122) located on the main shaft roller (133). The main sprocket (121) and the transmission sprocket (122) are driven by a roller chain meshing.

3. The horizontal sealing mechanism of the packaging machine according to claim 2, characterized in that: The belt rollers (132) are provided in three parts, including two steering rollers (1321) and one tensioning roller (1322). The two steering rollers (1321) are at the same height and are respectively located at both ends of the conveyor frame (131). The tensioning roller (1322) is located between the two steering rollers (1321) and is set lower than the steering rollers (1321). The conveyor frame (1311) is provided on both sides for positioning the two ends of the tensioning roller (1322) in the axial direction. The moving grooves (1311) are set along the material conveying direction.

4. The horizontal sealing mechanism of the packaging machine according to claim 2, characterized in that: The two ends of the main shaft roller (133) extend axially to the outer sides of the conveyor frame (131), and the main sprocket (121) is located on one end of the main shaft roller (133); the conveyor frame (131) is provided with a support frame (16) on the side facing the other end of the main shaft roller (133), and the transverse sealing assembly (15) is located on the support frame (16) through a mounting base (17). The second chain assembly (14) includes a drive sprocket (141) disposed on one side of the support frame (16) and fixedly connected to the other end of the main shaft roller (133), a driven sprocket (142) that is connected to the pulley assembly (151) for transmission, and a limiting sprocket (143) disposed on the top of the support frame (16). The drive sprocket (141), the driven sprocket (142) and the limiting sprocket (143) are driven by roller chain meshing.

5. The horizontal sealing mechanism of the packaging machine according to claim 4, characterized in that: The mounting base (17) is movably connected to the support frame (16) via a lead screw assembly (18), the lead screw assembly (18) comprising: The lead screw (181) passes vertically through the mounting base (17). The upper and lower ends of the lead screw (181) are rotatably connected to the support frame (16) through bearings (182), and its upper end passes upward through the support frame (16) to connect to the handwheel (183). Two guide rods (184) are provided. The two guide rods (184) are in the same direction as the lead screw (181) and are respectively arranged on both sides of the lead screw (181). The upper and lower ends of the guide rods (184) are fixedly connected to the support frame (16). The mounting base (17) is provided with a screw nut that is threadedly connected to the screw (181) and a linear bearing that is slidably connected to the guide rod (184).

6. The horizontal sealing mechanism of the packaging machine according to claim 5, characterized in that: The pulley assembly (151) is disposed on the mounting base (17) and includes: Two pulleys (1511) are provided, and the two pulleys (1511) are connected to the guide wheel unit (152) and the heat sealing unit (153) respectively through two pairs of bevel gear pairs (19); A toothed belt (1512) is wound around two pulleys (1511); The pulley (1511) corresponding to the heat sealing unit (153) is coaxial with the driven sprocket (142) and fixedly connected by a rotating shaft.

7. The horizontal sealing mechanism of the packaging machine according to claim 5, characterized in that: The guide wheel unit (152) is rotatably mounted on the feed side of the mounting base (17), including two meshing first gears (1521) on the top of the mounting base (17), and two pressure wheels (1522) on the bottom of the mounting base (17) that abut against each other and are respectively connected to the two first gears (1521). The first gear (1521) near the pulley assembly (151) is connected to the corresponding pulley (1511) via a pair of bevel gear pairs (19).

8. The horizontal sealing mechanism of the packaging machine according to claim 7, characterized in that: The heat sealing unit (153) is rotatably mounted on the discharge side of the mounting base (17), including two meshing second gears (1531) on the top of the mounting base (17) and two meshing heat sealing gears (1532) on the bottom of the mounting base (17) and respectively connected to the two second gears (1531). The second gear (1531) near the pulley assembly (151) is connected to the corresponding pulley (1511) via another pair of bevel gears (19).

9. The horizontal sealing mechanism of the packaging machine according to claim 8, characterized in that: The second gear (1531) has a cavity on the side facing the mounting base (17) to accommodate the heating coil (1533), and a heat insulation element (1534) is sleeved on the gear shaft of the second gear (1531) between the mounting base (17) and the heating coil (20).

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