Sealing device

Abstract

This application provides a sealing device, including a moving machine and a sealing machine. The sealing machine is fixedly mounted on the moving machine and includes a first conveying mechanism and a second conveying mechanism, with the conveying directions of the first and second conveying mechanisms being opposite. A clamping area for holding the film is formed between the first and second conveying mechanisms, and they are configured to drive the film to move in a preset direction when operating synchronously, so that the film generates a reaction force and transmits it to the sealing machine and the moving machine, driving the moving machine to move in the same direction. This application greatly improves work efficiency, reduces the technical requirements for operators and the safety risks during operation, and saves labor costs.

Description

Technical Field

[0001] This application relates to the field of sealing technology, and in particular to a sealing device. Background Technology

[0002] Currently, during the large-scale storage of new tobacco in tobacco warehouses, controlled atmosphere storage is used, requiring maintenance personnel to perform controlled atmosphere sealing operations on the new tobacco. The existing sealing process requires two people: one uses a handheld hot melt sealing machine, while the other holds a lighting device (due to insufficient lighting in the storage area) and arranges the film. This two-person operation is difficult, dangerous, and inefficient. Utility Model Content

[0003] This application provides a sealing device that greatly improves work efficiency, reduces the technical requirements for operators and the safety risks during the operation, and saves labor costs.

[0004] This application provides a sealing device, including: a mobile machine and a sealing machine, wherein the sealing machine is fixedly mounted on the mobile machine, and the sealing machine includes a first conveying mechanism and a second conveying mechanism, wherein the conveying directions of the first conveying mechanism and the second conveying mechanism are opposite;

[0005] A clamping area for holding the film is formed between the first conveying mechanism and the second conveying mechanism, and they are configured to drive the film to move in a preset direction when operating synchronously, so that the film generates a reaction force and transmits it to the sealing machine and the moving machine, driving the moving machine to move in the same direction.

[0006] In one embodiment, the sealing machine includes an inlet and an outlet, with the inlet located upstream of the clamping area and the outlet located downstream of the clamping area along the movement path of the film.

[0007] In one embodiment, the first conveying mechanism includes a first annular conveyor belt and at least two first rollers, the first annular conveyor belt being wound around the at least two first rollers.

[0008] In one embodiment, the first roller includes a first driving roller and a first driven roller;

[0009] The sealing machine also includes a first drive unit, which is connected to the first drive wheel and is used to drive the first annular conveyor belt to rotate counterclockwise.

[0010] In one embodiment, the second conveying mechanism includes a second annular conveyor belt and at least two second rollers, the second annular conveyor belt being wound around the at least two second rollers;

[0011] The clamping area is formed on the opposite side of the first and second annular conveyor belts.

[0012] In one embodiment, the second roller includes a second driving roller and a second driven roller;

[0013] The sealing machine also includes a second drive unit, which is connected to the second drive wheel and is used to drive the second annular conveyor belt to rotate clockwise.

[0014] In one embodiment, the sealing machine further includes a hot-melt unit disposed within the clamping area and configured to perform hot-melt fusion of the film during the film transfer process.

[0015] In one embodiment, the sealing machine further includes a preheating unit located upstream of the clamping area for preheating the film before hot melting.

[0016] And / or, the sealing machine further includes a cooling unit located downstream of the clamping area and configured to cool and shape the heat-melted film.

[0017] In one embodiment, the mobile machine includes a frame, a plurality of rollers, and a handrail mechanism;

[0018] The sealing machine is fixedly mounted on the vehicle frame, the rollers are located at the bottom of the vehicle frame, and the handrail mechanism is located around the perimeter of the vehicle frame.

[0019] In one embodiment, the vehicle frame is provided with a power interface, a lighting hose, and a light. The power interface is used to connect to an external mobile power source, one end of the lighting hose is fixed to the vehicle frame, and the other end is provided with the light.

[0020] The sealing device provided in this application includes a moving machine and a sealing machine. The sealing machine clamps the film and drives it to move by rotating in opposite directions through the first and second conveying mechanisms. The reaction force generated by the film drives the moving machine to move. There is no need to set up an additional independent drive mechanism or traction device, which enables the sealing device to move autonomously within the working area, realize the rapid covering of objects to be sealed in different locations, significantly improve the mobility and operational flexibility of the equipment, effectively reduce equipment layout and operating costs, greatly improve work efficiency, reduce the technical requirements of operators and the safety risks in the operation process, and save labor costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the accompanying drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the sealing device provided in the embodiments of this application;

[0023] Figure 2 for Figure 1 A magnified view of a portion of location A in the diagram;

[0024] Figure 3 This is a schematic diagram of the structure of the mobile device and the mounting base provided in the embodiments of this application;

[0025] Figure 4 This is a schematic diagram of the structure of the mobile device provided in an embodiment of this application.

[0026] Figure label:

[0027] 100. Sealing device;

[0028] 110. Mobile machine; 111. Frame; 1111. Handrail; 1112. Connecting rod; 112. Roller; 113. Vehicle body; 114. Lighting hose; 115. Lighting lamp; 116. Lighting wire winding point; 117. Sealing machine wire winding point;

[0029] 120. Sealing machine; 121. First conveying mechanism; 1211. First annular conveyor belt; 1212. First driving wheel; 1213. First driven wheel; 122. Second conveying mechanism; 1221. Second annular conveyor belt; 1222. Second driving wheel; 1223. Second driven wheel; 123. Feed inlet; 124. Discharge outlet; 125. Clamping area;

[0030] 130. Hot melt unit;

[0031] 140. Install the base;

[0032] 150. Preheating unit. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms 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 application 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 application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0037] Currently, during the large-scale storage of new tobacco in tobacco warehouses, controlled atmosphere storage is used, requiring maintenance personnel to perform controlled atmosphere sealing operations on the new tobacco. The existing sealing process requires two people: one uses a handheld hot melt sealing machine, while the other holds a lighting device (due to insufficient lighting in the storage area) and arranges the film. This two-person operation is difficult, dangerous, and inefficient.

[0038] To address the aforementioned issues, this application provides a sealing device comprising a moving machine and a sealing machine. The sealing machine clamps and moves the film via first and second conveying mechanisms operating in opposite directions. The reaction force generated by the film drives the moving machine forward, eliminating the need for an additional independent drive mechanism or traction device. This allows the sealing device to move autonomously within the work area, enabling rapid coverage of objects to be sealed at different locations. This significantly improves the mobility and operational flexibility of the equipment, effectively reduces equipment layout and operating costs, greatly enhances work efficiency, lowers the technical requirements for operators and reduces safety risks during operation, and saves on labor costs.

[0039] The following will combine Figures 1 to 4 The specific structure of the sealing device provided in the embodiments of this application will be described.

[0040] Reference Figure 1 and Figure 2 As shown, this application embodiment provides a sealing device 100, which includes a mobile unit 110 and a sealing machine 120. For example, the mobile unit 110 can be a trolley.

[0041] In this embodiment, the sealing device 100 is used in the following scenario: after new tobacco is stored, controlled atmosphere preservation (such as nitrogen filling and oxygen reduction) is required. Sealing the tobacco stacks inhibits the growth of mold and pests, thus maintaining the quality of the tobacco leaves. The sealing film must have high airtightness; therefore, the sealing quality of the bottom and side films directly affects the controlled atmosphere effect. The tobacco stack is usually a cuboid, with a bottom film laid at the bottom and side and top films covering the sides and top, forming a fully enclosed structure.

[0042] Specifically, a bottom film is laid flat on the ground in the tobacco stacking area. Side film rolls are placed on one side of the stack, and one person unfolds them from the bottom upwards, covering the front, back, left, and right sides of the stack, leaving an overlap edge with the top film. The sealing device 100 is pushed to any corner of the stack where the bottom and side films overlap. The lighting is adjusted to focus on the overlap line, the power supply is connected, and the heater temperature is set for preheating. The operator tidies up the overlapping edges of the side and bottom films and feeds them into the sealing machine 120 inlet. The film is clamped and conveyed forward, and the trolley is driven to move forward along the edge of the stack. The operator simply follows the trolley, continuously tidying up the unsealed film edges to ensure the overlap line is always aligned with the center of the sealing strip. After the trolley completes a full circumference seal around the stack, the film is cut at the starting point. The overlapping portion needs to be sealed repeatedly to prevent air leakage at the seams. After sealing, a small amount of nitrogen is injected into the stack. The sealing quality can be checked by observing the pressure decay rate; otherwise, the sealing edges need to be checked for leaks.

[0043] Reference Figure 1 and Figure 2As shown, the sealing device 100 may include a mounting base 140, a moving machine 110, and a sealing machine 120. The mounting base 140 is fixedly mounted on the moving machine 110, and the sealing machine 120 is fixedly mounted on the mounting base 140. The sealing machine 120 includes a first conveying mechanism 121 and a second conveying mechanism 122, and the conveying directions of the first conveying mechanism 121 and the second conveying mechanism 122 are opposite.

[0044] A clamping area 125 for clamping the film is formed between the first conveying mechanism 121 and the second conveying mechanism 122, and is configured to drive the film to move in a preset direction when operating synchronously, so that the film generates a reaction force and transmits it to the sealing machine 120 and the moving machine 110, driving the moving machine 110 to move in the same direction.

[0045] It should be noted that the preset direction of the film can be moved according to the actual structure of the chimney. For example, it can be moved along the width of the outer perimeter of the chimney, or it can be moved along the length of the outer perimeter of the chimney.

[0046] The method of fixing the sealing machine 120 and the mobile machine 110 is not limited. For example, the sealing machine 120 and the mobile machine 110 can be fixed with bolts and nuts; or, the sealing machine 120 and the mobile machine 110 can be fixed by welding; or, the sealing machine 120 and the mobile machine 110 can be fixed by other methods. This embodiment does not limit this, and the above methods can ensure the accurate installation position of the sealing machine 120 and the mobile machine 110, and effectively reduce mutual movement during operation.

[0047] It should be noted that the opposite conveying directions of the first conveying mechanism 121 and the second conveying mechanism 122 mean that the two conveying mechanisms can be arranged opposite each other, forming a clamping area 125 for clamping the film between the conveying surfaces. When the first conveying mechanism 121 rotates clockwise, the second conveying mechanism 122 rotates counterclockwise, just like two conveyor belts working in opposite directions, facing each other.

[0048] In actual operation, the film is placed in the clamping area 125 between the two mechanisms. The first conveying mechanism 121 pulls the film in one direction, while the second conveying mechanism 122 pulls the film in the opposite direction simultaneously. This opposing pulling force ensures that the film is subjected to a stable and balanced force within the clamping area 125, allowing it to move smoothly along a preset direction. Furthermore, according to Newton's third law, the film generates a reaction force during the pulling process. Due to the synergistic effect of the two conveying mechanisms, this reaction force is concentrated on the sealing machine 120 and the moving machine 110, driving the moving machine 110 to move in the direction of film movement.

[0049] Therefore, by adopting a reverse conveying method in this embodiment, it is possible not only to ensure that the film is subjected to uniform force during the conveying process, avoiding problems such as offset and wrinkles, and ensuring the sealing quality, but also to make full use of the reaction force generated by the film movement to drive the moving machine 110, realize the autonomous movement of the sealing device 100, simplify the equipment structure, and improve work efficiency.

[0050] In one embodiment, reference Figure 2 As shown, the sealing machine 120 may include a feed inlet 123 and a discharge outlet 124. Along the film's movement path, the feed inlet 123 is located upstream of the clamping area 125, and the discharge outlet 124 is located downstream of the clamping area 125.

[0051] In actual operation, the operator puts the film to be used into the feed port 123. The film moves smoothly along the set path into the clamping area 125 formed by the first conveying mechanism 121 and the second conveying mechanism 122. Within the clamping area 125, the film is pulled smoothly downstream by the synergistic action of the two mechanisms with opposite conveying directions. The discharge port 124, located downstream of the clamping area 125, is the outlet where the film leaves the equipment after completing its transfer process within the sealing machine 120.

[0052] By rationally arranging the inlet 123 and outlet 124, bending or entanglement will not occur during film transport due to chaotic paths or unreasonable inlet / outlet settings, ensuring uniform force on the film within the clamping area 125, thereby improving the film transport stability.

[0053] In one embodiment, reference Figure 2 As shown, the first conveying mechanism 121 may include a first annular conveyor belt 1211 and at least two first rollers, with the first annular conveyor belt 1211 wound around the at least two first rollers.

[0054] In actual operation, the first roller is driven by a motor, which transmits power to the first annular conveyor belt 1211. The surface of the conveyor belt contacts the film, generating friction, which in turn causes the film to move in a predetermined direction. Moreover, the structure of the annular conveyor belt with rollers around it distributes the force on the conveyor belt, reduces local wear, and extends the service life of the conveyor belt.

[0055] In one embodiment, reference Figure 2 As shown, the first roller may include a first driving roller 1212 and a first driven roller 1213; the sealing machine 120 may also include a first drive unit, which is connected to the first driving roller 1212 and is used to drive the first annular conveyor belt 1211 to rotate counterclockwise.

[0056] The first drive unit can be a servo motor or a stepper motor, and this embodiment does not limit it. The first drive unit and the first drive wheel 1212 can be connected through transmission components such as a conveyor belt, gear set or coupling, and can accurately output stable torque to drive the first drive wheel 1212 to rotate in a counterclockwise direction. The first driven wheel 1213 cooperates with the first drive wheel 1212 and achieves linkage through the tensioned first annular conveyor belt 1211 to form a stable closed-loop transmission system.

[0057] In one embodiment, reference Figure 2 As shown, the second conveying mechanism 122 may include a second annular conveyor belt 1221 and at least two second rollers, with the second annular conveyor belt 1221 wound around the at least two second rollers; the conveying surfaces of the first annular conveyor belt 1211 and the second annular conveyor belt 1221 opposite each other form a clamping area 125.

[0058] It should be noted that the first annular conveyor belt 1211 and the second annular conveyor belt 1221 can be arranged in parallel, and a narrow gap is formed between the two opposite conveyor surfaces, constituting a clamping area 125 for clamping the film.

[0059] The surface of the second annular conveyor belt 1221 can typically be coated with a high-friction coefficient material such as silicone and rubber, which helps to enhance the friction with the film and prevent slippage.

[0060] The second annular conveyor belt 1221, with its two opposing conveyor belts moving in opposite directions, forms a stable clamping force through bidirectional friction, ensuring that the film maintains a straight line during transport. This is particularly suitable for sealing wide films, effectively preventing wrinkles and misalignment.

[0061] In one embodiment, reference Figure 2 As shown, the second roller may include a second driving roller 1222 and a second driven roller 1223; the sealing machine 120 may also include a second drive unit, which is connected to the second driving roller 1222 and is used to drive the second annular conveyor belt 1221 to rotate clockwise.

[0062] The second drive unit can be a servo motor or a stepper motor, and this embodiment does not limit this. The second drive unit and the first drive unit can independently control the two drive wheels, or one drive unit can control the two drive wheels, and this embodiment does not limit this.

[0063] The second drive pulley 1222, connected to and driven by the second drive unit, serves as the power source for the second annular conveyor belt 1221. It drives the conveyor belt 1221 to move according to a preset speed and direction via torque transmitted from a motor. The second driven pulley 1223 supports and tensions the conveyor belt 1221, working in conjunction with the drive pulley 1222 to ensure the conveyor belt is always under appropriate tension.

[0064] In one embodiment, reference Figure 2 As shown, the sealing machine 120 may also include a heat-melting unit 130, which is disposed in the clamping area 125 and configured to heat-melt the film during film transfer.

[0065] It should be noted that the number of heat-melting units 130 is not limited. For example, in this embodiment, the heat-melting unit 130 may include one, two, or more, and can be set according to actual needs. For example, the heat-melting unit 130 may be a heating element, such as a heating plate.

[0066] It should be noted that there is no limitation on the installation position of the hot-melt unit 130. For example, the hot-melt unit 130 can be fixed at the bracket position above the first annular conveyor belt 1211 to facilitate the hot-melt operation from one side of the film surface; or, it can be installed at the bracket position of the second annular conveyor belt 1221 to facilitate the hot-melt operation from the other side of the film surface.

[0067] During operation, when the film passes through the clamping area 125 driven by the first conveying mechanism 121 and the second conveying mechanism 122, the hot melt unit 130 simultaneously applies precise temperature to the upper and lower surfaces of the film, causing the film material to melt and fuse together under pressure, forming a continuous and sealed sealing line.

[0068] In one embodiment, reference Figure 2 As shown, the sealing machine 120 may also include a preheating unit 150, which is located upstream of the clamping area 125 and is used to preheat the film before it is heated and melted.

[0069] For example, the preheating unit 150 may be an infrared heating tube or a heating roller. This embodiment does not limit this, and the specific choice can be made according to the film material.

[0070] During operation, the film enters the preheating unit 150 driven by the first conveying mechanism 121 and the second conveying mechanism 122, where it is uniformly heated, increasing the activity of molecules inside the film and reducing its crystallinity. The preheated film then enters the clamping region 125, where the hot-melting unit 130 only needs to apply low energy to melt the film, forming a continuous and sealed sealing line.

[0071] By including the preheating unit 150, the preheating process makes the internal temperature distribution of the film more uniform, avoiding uneven melting caused by local temperature differences.

[0072] In this embodiment, the sealing machine 120 may further include a cooling unit located downstream of the clamping area 125 and configured to cool and shape the film after it has been heated.

[0073] For example, the cooling unit can be air-cooled, water-cooled, or use a cooling plate to remove heat from the thin film through a circulating medium.

[0074] During operation, after the hot-melted film is sealed in the clamping area 125, it immediately enters the cooling unit. The cooling unit rapidly reduces the film temperature through convection, conduction and other methods, causing it to solidify quickly from the molten state, forming a dense sealing layer and improving the sealing effect on the chimney.

[0075] In one embodiment, reference Figure 3 and Figure 4 As shown, the mobile machine 110 may include a vehicle body 113, a frame 111, and multiple rollers 112; a mounting base 140 is fixedly mounted on the vehicle body 113, the rollers 112 are located at the bottom of the frame 111, and the frame 111 is located around its periphery. This makes the mobile machine 110 and the sealing machine 120 form an organic whole. In the scenario of large-scale warehousing of new tobacco in tobacco warehouses, a single person can push the equipment to complete the tobacco stack sealing operation, which reduces labor costs and improves work efficiency compared to the traditional two-person operation mode.

[0076] In one embodiment, reference Figure 3 and Figure 4 As shown, the frame 111 can be equipped with a power interface, a lighting hose 114, and a light 115. The power interface is used to connect to an external mobile power source. One end of the lighting hose 114 is fixed to the frame 111, and the other end is equipped with the light 115. This helps ensure the smooth completion of ongoing palletizing operations, reduces film waste and readjustment time due to interruptions, and lowers the risk of production losses.

[0077] The frame 111 may be equipped with a sealing machine wire winding point 117 and a lighting wire winding point 116 to facilitate the separate handling of the lighting wire and the sealing machine wire 120. The frame 111 may include a handrail 1111 and a connecting rod 1112, with the connecting rod 1112 connecting the handrail 1111 and the vehicle body 113. The handrail 1111 may be T-shaped.

[0078] The method of using the sealing device 100 in this embodiment is as follows: Place the sealing machine 120 on the trolley and fix it. Place the device at the starting position of the sealing process through the handrail mechanism. Take out the lighting wire and the sealing machine 120 wire and connect them to the mobile power supply. Adjust the position of the lighting hose 114 so that the position of the lighting lamp 115 is appropriate. During this period, one person arranges the side film and bottom film of the sealing stack neatly. After the sealing machine 120 has been heated for a period of time, put the arranged side film and bottom film into the sealing machine 120 inlet together. With the counterclockwise rotation of the first conveying mechanism 121 and the clockwise rotation of the second conveying mechanism 122 of the sealing machine 120, the arranged side film and bottom film enter together. After being heated by the hot melt unit 130, the side film and bottom film are fused together. With the biting and pulling force of the first annular conveyor belt 1211 and the second annular conveyor belt 1221 during the sealing process, a forward force is generated. Since the bottom of the trolley is equipped with wheels, this force drives the trolley to continue moving forward. After fusion, the first annular conveyor belt 1211 and the second annular conveyor belt 1221 continue to operate, ensuring better bonding and cooling after fusion. The sealed film exits from the outlet, maintaining continuous sealing until the fusion of the side and bottom films in that section is completed. After fusion is finished, the power to the lighting lamp 115 and the sealing machine 120 is turned off. During movement, if it is necessary to stop the trolley's operation or move the device, it can be done by moving the T-shaped handrail 1111 or the front handle.

[0079] This embodiment provides a sealing device comprising a moving machine and a sealing machine. The sealing machine clamps and drives the film through a first conveying mechanism and a second conveying mechanism operating in opposite directions. The reaction force generated by the film drives the moving machine to move forward. No additional independent drive mechanism or traction device is required, enabling the sealing device to move autonomously within the work area. This allows for rapid covering of objects to be sealed in different locations, significantly improving the mobility and operational flexibility of the equipment, effectively reducing equipment layout and operating costs, greatly improving work efficiency, reducing the technical requirements for operators and safety risks during operation, and saving labor costs.

[0080] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A sealing device, characterized in that, include: The system comprises a mounting base, a mobile unit, and a sealing machine. The mounting base is fixedly mounted on the mobile unit, and the sealing machine is fixedly mounted on the mounting base. The sealing machine includes a first conveying mechanism and a second conveying mechanism, and the first conveying mechanism and the second conveying mechanism have opposite conveying directions. A clamping area for holding the film is formed between the first conveying mechanism and the second conveying mechanism, and they are configured to drive the film to move in a preset direction when operating synchronously, so that the film generates a reaction force and transmits it to the sealing machine and the moving machine, driving the moving machine to move in the same direction.

2. The encapsulation apparatus of claim 1, wherein The sealing machine includes an inlet and an outlet. Along the moving path of the film, the inlet is located upstream of the clamping area, and the outlet is located downstream of the clamping area.

3. The encapsulation apparatus of claim 1, wherein The first conveying mechanism includes a first annular conveyor belt and at least two first rollers, the first annular conveyor belt being wound around the at least two first rollers.

4. The encapsulation apparatus of claim 3, wherein The first roller includes a first driving roller and a first driven roller; The sealing machine also includes a first drive unit, which is connected to the first drive wheel and is used to drive the first annular conveyor belt to rotate counterclockwise.

5. The encapsulation apparatus of claim 3, wherein The second conveying mechanism includes a second annular conveyor belt and at least two second rollers, the second annular conveyor belt being wound around the at least two second rollers; The clamping area is formed between the two opposite conveyor surfaces of the first and second annular conveyor belts.

6. The encapsulation apparatus of claim 5, wherein, The second roller includes a second driving roller and a second driven roller; The sealing machine also includes a second drive unit, which is connected to the second drive wheel and is used to drive the second annular conveyor belt to rotate clockwise.

7. The closure device of any one of claims 1-6, wherein, The sealing machine also includes a hot-melt unit, which is disposed in the clamping area and configured to perform hot-melt fusion on the film during the film conveying process.

8. The sealing device according to claim 7, characterized in that, The sealing machine also includes a preheating unit, which is located upstream of the clamping area and is used to preheat the film before it is heat-melted. And / or, the sealing machine further includes a cooling unit located downstream of the clamping area and configured to cool and shape the heat-melted film.

9. The sealing device according to any one of claims 1-6, characterized in that, The mobile machine includes a vehicle body, a frame, and multiple rollers; The sealing machine is fixedly mounted on the vehicle body, the rollers are mounted on the bottom of the vehicle frame, and the vehicle frame is mounted on the periphery of the vehicle frame.

10. The sealing device according to claim 9, characterized in that, The vehicle frame is equipped with a power interface, a lighting hose, and a light. The power interface is used to connect to an external mobile power source. One end of the lighting hose is fixed to the vehicle frame, and the other end is equipped with the light.

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