Sealing equipment for cigarette packaging

Abstract

The utility model relates to the technical field of cigarette packaging, in particular to sealing equipment for cigarette packaging. The utility model provides sealing equipment for cigarette packaging. The sealing equipment comprises a sealing support, an upper heater mechanism, a lower heater mechanism, a lifting air cylinder and a vacuumizing mechanism. The lifting air cylinder, the upper heater mechanism and the lower heater mechanism are sequentially installed on the sealing support from high to low, the upper heater mechanism is installed at the cylinder end of the lifting air cylinder, and the lifting air cylinder is used for driving the upper heater mechanism to be close to or away from the lower heater mechanism; and the vacuumizing mechanism is used for extracting air in the packaging bag, so that the interior of the packaging bag is in a negative pressure state. According to the sealing equipment for cigarette packaging, the upper heater mechanism and the lower heater mechanism are used for clamping the bag opening of the packaging bag, then the vacuumizing mechanism is used for exhausting air in the packaging bag, manual air exhausting is not needed, automatic sealing operation can be achieved, and the sealing efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cigarette packing technical field, concretely relates to a cigarette packing is with sealing equipment. BACKGROUND

[0002] After the cigarette stacking is completed, the cigarette stack usually needs to be bagged and packaged for protection, which can avoid the wear and tear of the outer package of the cigarette during logistics transportation. At present, the artificial bagging method is basically adopted, that is, a plurality of people cooperate to first open the packaging bag, then push the cigarette stack into the packaging bag, then pat the packaging bag to expel excess air, and finally manually seal the opening with adhesive tape or heat the packaging bag as a whole by using a heat shrink oven. The packaging bag material is heated to a certain temperature, and then the cigarette stack is wrapped and fixed by using the heat shrinkage of the material itself.

[0003] However, whether manually sealing the opening with adhesive tape or heat shrinking the packaging bag as a whole, it is necessary to remove the excess air in the packaging bag to make the packaging bag shrink tightly around the cigarette stack. In addition, the manual sealing operation with adhesive tape is relatively troublesome and has low sealing efficiency, and a large amount of harmful gases to the human body are discharged during the process of heating the packaging bag with the heat shrink oven. SUMMARY

[0004] (I) The problem to be solved by the utility model is that whether manually sealing the opening with adhesive tape or heat shrinking the packaging bag as a whole, it is necessary to remove the excess air in the packaging bag to make the packaging bag shrink tightly around the cigarette stack.

[0005] (II) Technical solution

[0006] A sealing equipment for cigarette packaging, comprising a sealing support, an upper heater mechanism, a lower heater mechanism, a lifting cylinder and a vacuum pumping mechanism;

[0007] The lifting cylinder, the upper heater mechanism and the lower heater mechanism are installed on the sealing support in order from high to low, the upper heater mechanism is installed on the cylinder end of the lifting cylinder, and the lifting cylinder is used to drive the upper heater mechanism to approach or move away from the lower heater mechanism;

[0008] The vacuum pumping mechanism is used to pump out the air in the packaging bag to make the inside of the packaging bag in a negative pressure state, the vacuum pumping mechanism comprises an air suction pipe and a vacuum pump, the vacuum pump and the air suction pipe are connected in communication through a pipeline, and the air suction pipe is located between the upper heater mechanism and the lower heater mechanism;

[0009] The upper heater mechanism is provided with a first groove, and the lower heater mechanism is provided with a second groove corresponding to the first groove, and when the upper heater mechanism and the lower heater mechanism are attached, the first groove and the corresponding second groove are combined to form a suction pipe channel for the air suction pipe.

[0010] According to an embodiment of the present application, the upper heater mechanism comprises an upper heater and an upper heater mounting plate, the upper heater is mounted inside the upper heater mounting plate, and the lower surface of the upper heater mounting plate is a heating surface; the lower heater mechanism comprises a lower heater and a lower heater mounting plate, the lower heater is mounted inside the lower heater mounting plate, and the upper surface of the lower heater mounting plate is a heating surface.

[0011] According to an embodiment of the present application, the vacuumizing mechanism further comprises an electromagnet device, the air suction pipe is mounted on the electromagnet device and extends in a direction perpendicular to the lower heater mounting plate;

[0012] The electromagnet device is used to drive the air suction pipe to move in a direction perpendicular to the lower heater mounting plate; the upper heater mechanism further comprises an upper pressing plate, the heating surface of the upper heater mounting plate is provided with a mounting groove, the upper pressing plate is mounted in the mounting groove, the lower surface of the upper pressing plate is lower than the heating surface of the upper heater mounting plate, and the lower surface of the upper pressing plate is provided with a first groove;

[0013] The lower heater mechanism further comprises a lower pressing plate, the heating surface of the lower heater mounting plate is provided with a mounting groove, the lower pressing plate is mounted in the mounting groove, the upper surface of the lower pressing plate is higher than the heating surface of the lower heater mounting plate, and the upper surface of the lower pressing plate is provided with a second groove corresponding to the first groove;

[0014] When the lower surface of the upper pressing plate and the upper surface of the lower pressing plate are attached, the first groove and the second groove are combined to form a suction pipe channel for the air suction pipe to pass through;

[0015] The upper pressing plate and the lower pressing plate are both rubber plates.

[0016] According to an embodiment of the present application, the electromagnet device comprises an electromagnet shell and an armature, the armature is mounted in the electromagnet shell, and one end of the armature facing the lower heater mechanism is connected with the air suction pipe through a fixing block.

[0017] According to an embodiment of the present application, one end of the armature away from the lower heater mechanism is provided with a trigger piece, a sensor fixing seat is mounted on the electromagnet shell, and two photoelectric sensors are arranged and mounted on the sensor fixing seat in the moving direction of the air suction pipe.

[0018] According to one embodiment of the utility model, the sealing support is installed on the rack, and the upper guide plate and the lower guide plate are sequentially installed on the sealing support from high to low.

[0019] According to one embodiment of the utility model, the upper guide plate is located at the front end of the upper pressing plate, and the lower guide plate is located at the front end of the lower pressing plate.

[0020] According to one embodiment of the utility model, the upper guide plate and the lower guide plate are both right-angled triangular plates, and the inclined surface of the upper guide plate faces the inclined surface of the lower guide plate.

[0021] According to one embodiment of the utility model, at least one photoelectric sensor is installed on the sealing support, and a trigger piece is installed on the upper heater mounting plate.

[0022] According to one embodiment of the utility model, a programmable controller is included, and the lifting cylinder and the vacuum pump are respectively in communication connection with the programmable controller.

[0023] The utility model has the beneficial effects that:

[0024] In the sealing equipment for cigarette packets, the upper heater mechanism and the lower heater mechanism are used to clamp the bag opening of the packaging bag, the vacuum mechanism is used to discharge the air in the packaging bag, manual air discharge is not needed, the upper heater mechanism and the lower heater mechanism are used to cooperate to heat seal the bag opening of the packaging bag, and automatic sealing operation is realized. The whole sealing process is convenient and fast, the sealing efficiency is greatly improved, only the bag opening of the packaging bag is heat sealed, compared with the whole heating and shrinking packaging mode of the heat shrinkage furnace, a large amount of harmful gas is not discharged, and the packaging process is more environmentally friendly. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0026] Figure 1 The utility model provides a perspective view for the embodiment;

[0027] Figure 2 The utility model provides a structure view of the sealing equipment for the embodiment.

[0028] Figure 3 The structure diagram of the sealing equipment after removing the vacuum pump is provided for the embodiment of the utility model;

[0029] Figure 4 The structure diagram of the upper heater mechanism and the lower heater mechanism is provided for the embodiment of the utility model;

[0030] Figure 5 The structure diagram of the electromagnet device and the air suction pipe is provided for the embodiment of the utility model.

[0031] Icon: 1, rack; 2, conveyor; 3, sealing equipment; 301, sealing support; 302, upper heater mounting plate; 303, lifting cylinder; 304, upper pressing plate; 305, lower heater mounting plate; 306, lower pressing plate; 307, upper guide plate; 308, lower guide plate; 309, electromagnet shell; 310, first photoelectric sensor; 311, second photoelectric sensor; 312, vacuum pump; 313, air pressure sensor; 314, fixed plate; 315, fixed seat; 316, electromagnetic valve body; 317, armature; 318, fixed block; 319, air suction pipe; 320, sensor fixed seat; 321, third photoelectric sensor; 322, fourth photoelectric sensor; 323, first trigger piece; 324, second trigger piece; 325, second groove. DETAILED DESCRIPTION

[0032] The technical solutions of the utility model will be described clearly and completely in combination with the embodiments, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0033] As Figures 1-5As shown, one embodiment of the utility model provides a kind of sealing equipment for carton, including sealing support 301, upper heater mechanism, lower heater mechanism, lifting cylinder 303 and vacuumizing mechanism;Lifting cylinder 303, upper heater mechanism, lower heater mechanism are sequentially installed on sealing support 301 in order from high to low, upper heater mechanism is installed on the cylinder end of lifting cylinder 303, and lifting cylinder 303 is used to drive upper heater mechanism to approach or away from lower heater mechanism;Vacuumizing mechanism is used to extract the air in packaging bag, so that the inside of packaging bag is in negative pressure state, and vacuumizing mechanism includes air suction pipe 319 and vacuum pump 312, vacuum pump 312 and air suction pipe 319 are connected by pipeline, and air suction pipe 319 is located between upper heater mechanism and lower heater mechanism;First recess is equipped on upper heater mechanism, and second recess 325 corresponding to first recess is equipped on lower heater mechanism, when upper heater mechanism and lower heater mechanism are adhered, first recess and corresponding second recess 325 are merged to form suction pipe passage for air suction pipe 319.

[0034] In the embodiment, when sealing the packaging bag loaded with carton, first, the bag opening of packaging bag is placed between upper heater mechanism and lower heater mechanism, then the port of air suction pipe 319 is put into the bag opening of packaging bag, then control lifting cylinder 303 to elongate, and lifting cylinder 303 drives upper heater mechanism to approach lower heater mechanism to clamp the bag opening of packaging bag to seal the bag opening of packaging bag, at this time, the port of air suction pipe 319 is located in the suction pipe passage formed by first recess and second recess 325, then control vacuum pump 312 to exhaust the air in packaging bag, and the inside of packaging bag is in negative pressure state to tightly adhere to carton, then air suction pipe 319 is extracted, and finally upper heater mechanism and lower heater mechanism heat the bag opening of packaging bag to seal the packaging bag.

[0035] As can be seen, the embodiment clamps the bag opening of packaging bag by upper heater mechanism and lower heater mechanism, then exhausts the air in packaging bag by vacuumizing mechanism, without manually exhausting air, and then heat seals the bag opening of packaging bag by cooperating upper heater mechanism and lower heater mechanism, to realize automatic sealing operation.The whole sealing process is convenient and fast, and the sealing efficiency is greatly improved, and only the bag opening of packaging bag is heat sealed, compared with the way of heat shrinking furnace overall heating and shrinking packaging, a large amount of harmful gas will not be discharged, and the packaging process is more environmentally friendly.

[0036] As a preferred embodiment, as Figure 2 And Figure 3As shown, the vacuumizing mechanism further comprises an electromagnet device, which is installed on the back of the sealing support 301, and the lifting cylinder 303, the upper heater mechanism and the lower heater mechanism are installed on the front of the sealing support 301. The air suction pipe 319 is installed on the electromagnet device and extends in a direction perpendicular to the lower heater installation plate 305, i.e. the air suction pipe 319 is arranged in the front-rear direction. The electromagnet device is used to drive the air suction pipe 319 to move in the front-rear direction, so that the air suction pipe 319 passes through or retreats from the passage between the upper heater mechanism and the lower heater mechanism.

[0037] In the present embodiment, the upper heater mechanism comprises an upper heater, an upper heater installation plate 302 and an upper pressing plate 304, wherein, as shown in Figure 4 the upper heater is installed inside the upper heater installation plate 302, the bottom of the upper heater installation plate 302 is provided with an installation groove, the upper pressing plate 304 is installed in the installation groove, the lower surface of the upper heater installation plate 302 is a heating surface, and the lower surface of the upper pressing plate 304 is lower than the heating surface of the upper heater installation plate 302.

[0038] The lower heater mechanism comprises a lower heater, a lower heater installation plate 305 and a lower pressing plate 306, the lower heater is installed inside the lower heater installation plate 305, as shown in Figure 4 the top of the lower heater installation plate 305 is provided with an installation groove, the lower pressing plate 306 is installed in the installation groove, the upper surface of the lower heater installation plate 305 is a heating surface, and the upper surface of the lower pressing plate 306 is higher than the heating surface of the lower heater installation plate 305.

[0039] Further, the lower surface of the upper pressing plate 304 is provided with a first groove, and the upper surface of the lower pressing plate 306 is provided with a second groove 325, and the upper pressing plate 304 and the lower pressing plate 306 are both rubber plates. When the upper heater mechanism and the lower heater mechanism are attached, the first groove and the second groove 325 are combined to form a suction pipe passage for the air suction pipe 319 to pass through.

[0040] Thus, the bag opening of the packaging bag is placed into the space between the upper pressing plate 304 and the lower pressing plate 306. Then the electromagnet device drives the air suction pipe 319 to move towards the packaging bag, and the air suction pipe 319 penetrates through the space between the upper pressing plate 304 and the lower pressing plate 306, so as to be inserted into the bag opening of the packaging bag. Then the lifting cylinder 303 is elongated by a set length, so as to drive the upper pressing plate 304 to move towards the lower pressing plate 306, and the upper pressing plate 304 and the lower pressing plate 306 are matched to squeeze the bag opening of the packaging bag, so that the bag opening of the packaging bag is in a sealed state, avoiding air leakage in the subsequent air suction. It should be noted that, since the first groove is arranged on the lower surface of the upper pressing plate 304, and the second groove 325 is arranged on the upper surface of the lower pressing plate 306, when the upper pressing plate 304 and the lower pressing plate 306 are matched, the air suction pipe 319 is located in the pipe channel formed by the first groove and the second groove 325, and the air suction pipe 319 does not hinder the matching of the upper pressing plate 304 and the lower pressing plate 306.

[0041] Further, the programmable controller controls the vacuum pump 312 to start, so as to suck the air in the packaging bag, so that the packaging bag tightly wraps the cigarette stack. Then the electromagnet device drives the air suction pipe 319 to exit the packaging bag and return to the original position. Then the lifting cylinder 303 is elongated by a set length again, so as to drive the upper pressing plate 304 to continue to move towards the lower pressing plate 306. Since the upper pressing plate 304 and the lower pressing plate 306 are both rubber plates, they have good elastic deformation, so the heating surface of the upper heater mounting plate 302 and the heating surface of the lower heater mounting plate 305 gradually approach, until the heating surface of the upper heater mounting plate 302 and the heating surface of the lower heater mounting plate 305 are matched to the bag opening of the packaging bag, so as to heat seal the bag opening of the packaging bag. The sealing process is usually very fast, and after the sealing is completed, the lifting cylinder 303 is immediately retracted to drive the upper heater mounting plate 302 and the upper pressing plate 304 to return to the original position.

[0042] In this embodiment, the vacuum suction mode is used to package the cigarette stack, so that the packaging bag is tightly matched to the cigarette stack, and the cigarettes are tightly wrapped by the packaging bag, so that the problem of loose cigarettes does not occur, and manual squeezing of the air in the packaging bag is not required.

[0043] It should be noted that the vacuum pump 312 is connected to the port of the air suction pipe 319 through a hose, and an air pressure sensor 313 is arranged on the hose, and the air pressure sensor 313 is signal connected to the programmable controller.

[0044] In addition, the electromagnetic valve body 316 is electrically connected to the lifting cylinder 303, and the electromagnetic valve body 316 is used to control the air flow of the lifting cylinder 303.

[0045] As a preferred embodiment, as shown in Figure 1As shown, the cigarette package sealing device further comprises a frame 1 and a conveyor 2, the conveyor 2 is installed on the frame 1, and the sealing support 301 is installed on the frame 1 and located at the back of the conveyor 2. The conveyor 2 is used to convey the completed cigarette stack in the bag.

[0046] In this embodiment, as shown in Figure 3 An upper guide plate 307 is arranged at the left side of the upper pressing plate 304, and a lower guide plate 308 is arranged at the left side of the lower pressing plate 306. The upper guide plate 307 is connected to the left side of the sealing support 301 through a fixed plate 314, and the lower guide plate 308 is also connected to the left side of the sealing support 301 through a fixed plate 314. The upper guide plate 307 is located directly above the lower guide plate 308, and both the upper guide plate 307 and the lower guide plate 308 are right-angled triangular plates. The inclined surface of the upper guide plate 307 and the inclined surface of the lower guide plate 308 are opposite to each other, so that an "eight" shaped opening is formed between the upper guide plate 307 and the lower guide plate 308, that is, the closer to the channel between the upper pressing plate 304 and the lower pressing plate 306, the shorter the distance between the upper guide plate 307 and the lower guide plate 308.

[0047] In this way, when the cigarette stack wrapped with the packaging bag moves towards the sealing device 3 along the conveyor 2, the bag opening of the packaging bag enters the "eight" shaped opening between the upper guide plate 307 and the lower guide plate 308. Since the "eight" shaped opening is narrower to the right, after the bag opening of the packaging bag passes through the "eight" shaped opening, the bag opening of the packaging bag will be narrowed, which facilitates the subsequent pressing of the bag opening of the packaging bag by the upper pressing plate 304 and the lower pressing plate 306.

[0048] That is, the upper guide plate 307 and the lower guide plate 308 mainly play two roles. First, they play a guiding role. The bag opening of the packaging bag enters the "eight" shaped opening between the upper guide plate 307 and the lower guide plate 308, and then enters the channel between the upper pressing plate 304 and the lower pressing plate 306 along the "eight" shaped opening. Second, they control the opening size of the bag opening of the packaging bag. After the bag opening of the packaging bag passes through the "eight" shaped opening, the bag opening of the packaging bag is narrowed, which facilitates the subsequent pressing of the bag opening of the packaging bag by the upper pressing plate 304 and the lower pressing plate 306.

[0049] In this embodiment, an electromagnet device is used to drive the air suction pipe 319 to move, because the electromagnet device has fast speed and fast response. A fixed seat 315 is installed at the back of the sealing support 301, as shown in Figure 5 The electromagnet housing 309 of the electromagnet device is installed on the fixed seat 315, the air suction pipe 319 is located above the electromagnet device, and the end of the armature 317 of the electromagnet device is connected to the air suction pipe 319 through the fixed block 318.

[0050] The electromagnet is a device for generating magnetic field by electric current, which mainly comprises a coil, a core, an armature 317, a control device, a counter-force spring, a magnetic yoke, an electromagnet shell 309, etc. The basic working principle of the electromagnet is to generate a magnetic field by the electric current through the coil. When a certain size of electric current flows through the electromagnet coil, a magnetic field will be generated around it. The strength of the magnetic field is proportional to the size of the electric current, and is related to the shape of the wire and the characteristics of the core. Specifically, it includes the following stages: magnetic field generation: when the coil is energized, the core and the armature 317 are magnetized, becoming two magnets with opposite polarity, which generates an electromagnetic attraction between them. Attraction state: when the attraction is greater than the counter-force of the counter-force spring, the armature 317 starts to move towards the core direction, realizing the attraction of the armature 317 and the core. Repulsion state: when the electric current in the coil is less than a certain value or the power supply is interrupted, the electromagnetic attraction is less than the counter-force of the counter-force spring, and the armature 317 will return to the original release position under the action of the counter-force.

[0051] It should be noted that the present embodiment does not involve improvement of the electromagnet itself, but only uses the electromagnet to drive the air suction pipe 319 to move.

[0052] In order to accurately control the moving range of the air suction pipe 319, as shown in Figure 5 The sensor fixing seat 320 is installed on the back of the fixed seat 315, and the third photoelectric sensor 321 and the fourth photoelectric sensor 322 are installed on the sensor fixing seat 320 in sequence along the moving direction of the air suction pipe 319, and the third photoelectric sensor 321 is closer to the electromagnet. The first trigger piece 323 is installed at the end of the armature 317 away from the fixed block 318, and the third photoelectric sensor 321 and the fourth photoelectric sensor 322 are arranged on the moving path of the first trigger piece 323.

[0053] When the initial state, the first trigger piece 323 at the end of the armature 317 is just located in the fourth photoelectric sensor 322, indicating that the air suction pipe 319 is in the initial position. When it is needed to vacuumize the packaging bag, the electromagnet drives the armature 317 to move the air suction pipe 319 towards the packaging bag, so that the air suction pipe 319 is inserted into the bag opening of the packaging bag. At this time, the first trigger piece 323 is just located in the third photoelectric sensor 321, and the programmable controller receives the signal of the third photoelectric sensor 321, thereby controlling the electromagnet to be de-energized.

[0054] Preferably, as shown in Figure 2As shown, the first photoelectric sensor 310 and the second photoelectric sensor 311 are sequentially installed on the side wall of the sealing support 301 from high to low, and the second trigger piece 324 is installed on the top of the upper heater mounting plate 302, and the first photoelectric sensor 310 and the second photoelectric sensor 311 are arranged on the moving path of the second trigger piece 324.

[0055] It should be noted that the rack 1 is also provided with an industrial computer, and all the electromagnetic valves and photoelectric sensors mentioned above are in communication connection with a programmable controller (PLC), and the programmable controller is in signal connection with the industrial computer.

[0056] In the description of the present application, it should be noted that the terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0057] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "communication", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly communicated, or it can be indirectly communicated through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0058] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sealing device for cigarette packs, characterized in that, It includes a sealing bracket (301), an upper heater mechanism, a lower heater mechanism, a lifting cylinder (303), and a vacuuming mechanism; The lifting cylinder (303), the upper heater mechanism, and the lower heater mechanism are installed on the sealing bracket (301) in descending order. The upper heater mechanism is installed on the cylinder end of the lifting cylinder (303). The lifting cylinder (303) is used to drive the upper heater mechanism to move closer to or away from the lower heater mechanism. The vacuuming mechanism is used to extract air from the packaging bag so that the inside of the packaging bag is under negative pressure. The vacuuming mechanism includes an air suction tube (319) and a vacuum pump (312). The vacuum pump (312) and the air suction tube (319) are connected by a pipeline. The air suction tube (319) is located between the upper heater mechanism and the lower heater mechanism. The upper heater mechanism is provided with a first groove, and the lower heater mechanism is provided with a second groove that corresponds to the first groove. When the upper heater mechanism and the lower heater mechanism are in contact, the first groove and the corresponding second groove are combined to form a suction channel that is adapted to the air suction tube (319).

2. The sealing device for cigarette packaging according to claim 1, characterized in that, The upper heater mechanism includes an upper heater and an upper heater mounting plate (302), the upper heater is installed inside the upper heater mounting plate (302), and the lower surface of the upper heater mounting plate (302) is a heating surface; the lower heater mechanism includes a lower heater and a lower heater mounting plate (305), the lower heater is installed inside the lower heater mounting plate (305), and the upper surface of the lower heater mounting plate (305) is a heating surface.

3. The sealing device for cigarette packaging according to claim 2, characterized in that, The vacuuming mechanism also includes an electromagnet device, and the air suction tube (319) is mounted on the electromagnet device and extends in a direction perpendicular to the lower heater mounting plate (305); The electromagnet device is used to drive the air suction tube (319) to move in a direction perpendicular to the lower heater mounting plate (305); the upper heater mechanism also includes an upper pressure plate (304), the heating surface of the upper heater mounting plate (302) is provided with a mounting groove, the upper pressure plate (304) is installed in the mounting groove, the lower surface of the upper pressure plate (304) is lower than the heating surface of the upper heater mounting plate (302), and the lower surface of the upper pressure plate (304) is provided with a first groove; The lower heater mechanism also includes a lower pressure plate (306). The heating surface of the lower heater mounting plate (305) is provided with a mounting groove. The lower pressure plate (306) is installed in the mounting groove. The upper surface of the lower pressure plate (306) is higher than the heating surface of the lower heater mounting plate (305). The upper surface of the lower pressure plate (306) is provided with a second groove (325) that corresponds one-to-one with the first groove. When the lower surface of the upper pressure plate (304) and the upper surface of the lower pressure plate (306) are in contact, the first groove and the second groove (325) merge to form a suction channel through which the air suction tube (319) passes. Both the upper pressure plate (304) and the lower pressure plate (306) are rubber sheets.

4. The sealing device for cigarette packaging according to claim 3, characterized in that, The electromagnet device includes an electromagnet housing (309) and an armature (317). The armature (317) is installed inside the electromagnet housing (309). One end of the armature (317) facing the lower heater mechanism is connected to the air suction pipe (319) through a fixing block (318).

5. A sealing device for cigarette packaging according to claim 4, characterized in that, A trigger plate is installed at the end of the armature (317) away from the lower heater mechanism. A sensor mounting base (320) is installed on the electromagnet housing (309). Two photoelectric sensors are arranged on the sensor mounting base (320) along the moving direction of the air suction pipe (319).

6. A sealing device for cigarette packaging according to claim 3, characterized in that, It includes a frame (1) and a conveyor (2), the conveyor (2) being mounted on the frame (1), and the sealing bracket (301) being mounted on the frame (1) and located on the back of the conveyor (2).

7. A sealing device for cigarette packaging according to claim 6, characterized in that, The sealing bracket (301) is equipped with an upper guide plate (307) and a lower guide plate (308) in descending order. The upper guide plate (307) is located at the front end of the upper pressure plate (304), and the lower guide plate (308) is located at the front end of the lower pressure plate (306). Along the conveying direction of the conveyor (2), the distance between the upper guide plate (307) and the lower guide plate (308) gradually decreases.

8. A sealing device for cigarette packaging according to claim 7, characterized in that, Both the upper guide plate (307) and the lower guide plate (308) are right-angled triangular plates, with the inclined surface of the upper guide plate (307) facing the inclined surface of the lower guide plate (308).

9. A sealing device for cigarette packaging according to claim 3, characterized in that, At least one photoelectric sensor is installed on the sealing bracket (301), and a trigger plate is installed on the upper heater mounting plate (302).

10. A sealing device for cigarette packaging according to claim 1, characterized in that, Includes a programmable controller, and the lifting cylinder (303) and the vacuum pump (312) are respectively communicatively connected to the programmable controller.

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