Automatic bag lifting and sealing machine for formula tobacco shreds and bag lifting and sealing method

Abstract

The invention discloses an automatic bag lifting and sealing machine for formula tobacco shreds and a bag lifting and sealing method. The automatic bag lifting and sealing machine for the formula tobacco shreds comprises a rack, a roller conveying component, a bag lifting component, a bag opening component and a bag sealing component; an input end, a bag lifting and sealing station and an output end are sequentially formed on the roller conveying component; the bag lifting component comprises a bag lifting device and a bag lifting device; the bag lifting device comprises a plurality of bag lifting pipes; the bag opening part comprises a bag opening lifting device, an outer bag opening device and an inner bag opening device; the opening of the plastic bag is processed according to a preset folding shape through the outer bag opening device and the inner bag opening device; and the bag sealing component seals the opening of the plastic bag. The production efficiency and the quality consistency can be improved, errors and cost of manual operation are reduced, and the requirements for high sealing and safety of bag openings of an automatic packing system of formula tobacco shreds in a large-scale production environment are met.

Description

Technical Field

[0001] This invention relates to the technical field of automatic tobacco packing systems, and in particular to an automatic bag sealing machine and method for sealing blended tobacco. Background Technology

[0002] Currently, tobacco factories primarily rely on manual labor for numerous processes, including unpacking cartons, bagging cartons, packing tobacco, weighing, sealing plastic bags, and sealing cartons. However, manual operation presents several uncertainties: Firstly, manually flattening the tobacco after packing can result in uneven pressure, leading to insufficient compaction or excessive tobacco debris, negatively impacting quality. Secondly, manually tying the boxes after packing cannot guarantee tightness; loose ties allow air to penetrate, increasing moisture content and degrading tobacco quality.

[0003] The economic benefits of a cigarette factory depend on its output, so production efficiency is very important. Manual bagging is a low-tech and time-consuming process. There is a need in the market for an automatic bagging and sealing machine for blended tobacco to replace manual tying, improve production efficiency, and at the same time, the saved manpower and resources can be allocated to other tasks, such as training staff to perform more technically demanding work, reducing personnel turnover at the operation site, increasing the degree of automation on site, and making the work site more standardized and efficient. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides an automatic bag sealing machine and method for blended tobacco. The automatic bag sealing machine replaces manual tying, improving production efficiency and quality consistency, reducing human error and costs, and meeting the high sealing and safety requirements of automatic packing systems for blended tobacco in large-scale production environments.

[0005] The first aspect of the present invention is to provide an automatic bag sealing machine for formulated tobacco, comprising a frame, wherein a roller conveying component, a bag lifting component, a bag supporting component and a bag sealing component are installed in the frame; The roller conveyor is used to convey cartons. The roller conveyor has an input end and an output end at its two ends, and a bag sealing station is formed between the input end and the output end. The bag-lifting component is positioned above the bag-sealing station. The bag-lifting component includes a bag-lifting device and a bag-lifting device. The bag-lifting device is vertically and vertically mounted on the bag-lifting device. The bag-lifting device includes several bag-lifting tubes, one end of which forms a bag-lifting suction head, and the other end is used to connect to a negative pressure forming device. The bag support component is disposed above the bag lifting component. The bag support component includes a bag lifting device, an outer bag support device, and an inner bag support device. The outer bag support device and the inner bag support device are vertically and vertically disposed on the bag lifting device. The outer bag support device and the inner bag support device are used to process the plastic bag opening into a predetermined folding shape. The sealing component is located between the carrying bag component and the supporting bag component, and the sealing component seals the opening of the plastic bag.

[0006] In a first aspect of the present invention, as a preferred embodiment, the roller conveying component includes a conveying device and a baffle device; The conveying device includes a conveying mounting frame, conveying rollers, and a conveying drive component. The conveying mounting frame is fixed to the machine frame, and the input end and output end are respectively formed at opposite ends of the conveying mounting frame. A plurality of conveying rollers are arranged parallel to the conveying mounting frame, and the two ends of each conveying roller are rotatably connected to opposite sides of the conveying mounting frame. Each conveying roller includes a driving roller and a driven roller, which are spaced apart. The conveying drive component has an output shaft, which is connected to the driving rollers via a synchronous belt pulley mechanism. The conveying drive component provides power to drive each conveying roller to rotate, thereby moving the carton from the input end to the output end. The baffle device includes a baffle drive and a baffle plate. The baffle drive has a fixed end and a telescopic end. The fixed end of the baffle drive is connected to the conveyor mounting frame, and the telescopic end of the baffle drive is connected to the baffle plate. The baffle plate is disposed between two adjacent conveyor rollers and has an interception state and a release state. In the interception state, the baffle plate extends from between the two adjacent conveyor rollers under the drive of the baffle drive, positioning the carton at the bag sealing station. In the release state, the baffle plate retracts from between the two adjacent conveyor rollers under the drive of the baffle drive, allowing the carton to pass through the bag sealing station.

[0007] In a first aspect of the present invention, as a preferred embodiment, the roller conveying component includes a conveying device and a baffle device; The conveying device includes a conveying mounting frame, conveying rollers, and a conveying drive component. The conveying mounting frame is fixed to the machine frame, and the input end and output end are respectively formed at opposite ends of the conveying mounting frame. A plurality of conveying rollers are arranged parallel to the conveying mounting frame, and the two ends of each conveying roller are rotatably connected to opposite sides of the conveying mounting frame. Each conveying roller includes a driving roller and a driven roller, which are spaced apart. The conveying drive component has an output shaft, which is connected to the driving rollers via a synchronous belt pulley mechanism. The conveying drive component provides power to drive each conveying roller to rotate, thereby moving the carton from the input end to the output end. The baffle device includes a baffle drive and a baffle plate. The baffle drive has a fixed end and a telescopic end. The fixed end of the baffle drive is connected to the conveyor mounting frame, and the telescopic end of the baffle drive is connected to the baffle plate. The baffle plate is disposed between two adjacent conveyor rollers and has an interception state and a release state. In the interception state, the baffle plate extends from between the two adjacent conveyor rollers under the drive of the baffle drive, positioning the carton at the bag sealing station. In the release state, the baffle plate retracts from between the two adjacent conveyor rollers under the drive of the baffle drive, allowing the carton to pass through the bag sealing station.

[0008] In a first aspect of the present invention, as a preferred embodiment, the bag lifting device includes a bag sealing mounting frame, on which a first bag lifting plate and a second bag lifting plate are slidably connected. Both the first bag lifting plate and the second bag lifting plate can be reciprocated in the vertical direction relative to the bag sealing mounting frame. The first bag lifting plate and the second bag lifting plate are disposed opposite to each other on opposite sides of the bag sealing station. The bag-carrying device includes a first bag-carrying device and a second bag-carrying device. The first bag-carrying device is disposed on the first bag-carrying lifting plate, and the second bag-carrying device is disposed on the second bag-carrying lifting plate. Both ends of the first bag-carrying device and the second bag-carrying device are connected to the bag-carrying tube. The bag-carrying suction head of the bag-carrying tube is provided with a suction head support plate. The edge of the suction head support plate is connected to the bag-carrying suction head. A plurality of ventilation holes are evenly distributed on the suction head support plate. The first bag-carrying device includes a first bag-carrying mounting plate and a first bag-carrying driving component. The bag-carrying tube is installed at opposite ends of the first bag-carrying mounting plate. The first bag-carrying driving component has a fixed end and a telescopic end. The fixed end of the first bag-carrying driving component is connected to the first bag-carrying lifting plate, and the telescopic end of the first bag-carrying driving component is connected to the first bag-carrying mounting plate. Power is provided by the first bag-carrying driving component to drive the first bag-carrying mounting plate to translate relative to the first bag-carrying lifting plate, so that the bag-carrying tube extends or retracts at the bag-carrying station. A bag mounting bend is provided at the connection between the bag tube and the first bag mounting plate. The bag mounting bend has a sliding part and a connecting part that are perpendicular to each other. The sliding part is connected to the first bag mounting plate, and the connecting part is connected to the bag tube through a pipe clamp. The end of the connecting part of the bag mounting bend is inclined to form a guide part. The first bag mounting plate has horizontally provided grooves at both ends, and the sliding part of the bag mounting bend is slidably connected in the grooves. A fastener is provided between the sliding part of the bag mounting bend and the groove, and the fastener is used to lock the relative position of the sliding part of the bag mounting bend and the groove.

[0009] In a first aspect of the present invention, as a preferred embodiment, both ends of the first bag lifting plate are connected to the bag sealing mounting frame via a slider rail mechanism. A first bag lifting transmission assembly is provided between the first bag lifting plate and the bag sealing mounting frame. The first bag lifting transmission assembly includes a first bag driving wheel, a first bag driven wheel, and a first bag synchronous belt. The first bag driving wheel is disposed at the bottom of the bag sealing mounting frame via a fixed bearing seat, and the first bag driven wheel is disposed at the top of the bag sealing mounting frame via a sliding bearing seat. The first bag synchronous belt is sleeved around the first bag driving wheel and the first bag driven wheel in the circumferential direction. The back of the first bag lifting plate is connected to the first bag synchronous belt via a belt clamp. The second bag lifting plate has two ends connected to the bag sealing mounting frame via a slider rail mechanism. A second bag lifting transmission assembly is provided between the second bag lifting plate and the bag sealing mounting frame. The second bag lifting transmission assembly includes a second bag driving wheel, a second bag driven wheel, and a second bag synchronous belt. The second bag driving wheel is mounted on the bottom of the bag sealing mounting frame via a fixed bearing seat, and the second bag driven wheel is mounted on the top of the bag sealing mounting frame via a sliding bearing seat. The second bag synchronous belt is sleeved around the second bag driving wheel and the second bag driven wheel in the circumferential direction. The back of the second bag lifting plate is connected to the second bag synchronous belt via a belt clamp. The bag lifting device also includes a bag drive motor and a bag drive shaft. The bag drive motor is connected to the bag drive shaft through a reducer. The two ends of the bag drive shaft are respectively connected to the first bag drive wheel and the second bag drive wheel. The bag drive motor provides power to drive the bag drive shaft and the first and second bag drive wheels at both ends to rotate, thereby driving the first and second bag lifting plates to lift and lower synchronously.

[0010] In a first aspect of the present invention, as a preferred embodiment, the bag sealing component includes a first bag sealing mounting frame and a second bag sealing mounting frame, both of which are connected to the bag sealing mounting frame via a slider rail mechanism; both the first and second bag sealing mounting frames can move back and forth vertically relative to the bag sealing mounting frame, and the first and second bag sealing mounting frames are positioned opposite each other on opposite sides of the bag sealing station; The sealing component further includes a sealing knife assembly and a sealing knife seat assembly. The sealing knife assembly is disposed on the first sealing mounting frame and includes a sealing knife body, a sealing knife drive component, and a heating element. The sealing knife drive component has a fixed end and a telescopic end. The fixed end of the sealing knife drive component is fixed to the first sealing mounting frame, and the telescopic end of the sealing knife drive component is connected to the sealing knife body. The heating element is connected to the sealing knife body. The sealing knife seat assembly is disposed on the second sealing mounting frame and includes a sealing knife seat body and a sealing knife seat drive component. The sealing knife seat drive component has a fixed end and a telescopic end. The fixed end of the sealing knife seat drive component is fixed to the second sealing mounting frame, and the telescopic end of the sealing knife seat drive component is connected to the sealing knife seat body. By the sealing knife drive component and the sealing knife seat drive component respectively driving the sealing knife body and the sealing knife seat body to move closer to each other, the opening of the plastic bag is pressed between the sealing knife body and the sealing knife seat body, thereby sealing the plastic bag.

[0011] In a first aspect of the present invention, as a preferred embodiment, the bag-supporting lifting device includes a bag-supporting mounting frame, a bag-supporting lifting frame, and a bag-supporting lifting drive member. The bag-supporting lifting frame is slidably connected to the bag-supporting mounting frame in the vertical direction, and the bag-supporting lifting drive member is used to drive the bag-supporting lifting frame to reciprocate in the vertical direction relative to the bag-supporting mounting frame. The external support bag device includes an external support plate assembly and an external support plate drive component; the external support plate assembly includes a first external support plate and a second external support plate, the tops of the first external support plate and the second external support plate are slidably connected to the bag lifting frame in a horizontal direction; the external support plate drive component is used to drive the first external support plate and the second external support plate to move closer to or further away from each other. The inner support bag device includes a first inner support bag assembly and a second inner support bag assembly, which are respectively disposed on opposite sides of the outer support plate assembly; the first inner support bag assembly includes a first inner support plate and a second inner support plate, and the second inner support bag assembly includes a third inner support plate and a fourth inner support plate, the tops of the first inner support plate, the second inner support plate, the third inner support plate and the fourth inner support plate are all slidably connected to the bag lifting frame in a horizontal direction; the outer support plate driving component is used to drive the first inner support plate and the second inner support plate, and the third inner support plate and the fourth inner support plate to move closer to or further away from each other.

[0012] In a first aspect of the present invention, as a preferred embodiment, the bag-supporting lifting frame has a first side plate and a second side plate disposed on opposite sides, and a bottom plate disposed at the bottom. The bottom plate has a first limiting opening and a second limiting opening. The first outer support plate, the first inner support plate, and the third inner support plate extend out from the first limiting opening; the second outer support plate, the second inner support plate, and the fourth inner support plate extend out from the second limiting opening; the tops of the first outer support plate and the second outer support plate are connected to the first side plate by a slider rail mechanism. The outer support bag device further includes an outer support plate transmission assembly. The outer support plate drive is connected to the first outer support plate and the second outer support plate respectively through the outer support plate transmission assembly. A buffer assembly is provided on the first outer support plate. The buffer assembly includes an outer support bag rod and an elastic element. Both ends of the outer support bag rod are connected to the first outer support plate through the elastic element. This allows the outer support bag rod to have an elastic force that moves closer to or away from the first outer support plate.

[0013] In a first aspect of the invention, as a preferred embodiment, the tops of the first inner support plate and the second inner support plate are connected to the first side plate via a slider-rail mechanism; the tops of the third inner support plate and the fourth inner support plate are connected to the second side plate via a slider-rail mechanism; the inner support bag device further includes a first inner support bag transmission assembly, a second inner support bag transmission assembly, and a first linkage shaft; the inner support plate drive member is connected to the first inner support plate and the second inner support plate respectively via the first inner support bag transmission assembly; the inner support plate drive member is connected to the third inner support plate and the fourth inner support plate respectively via the second inner support bag transmission assembly; both ends of the first linkage shaft are connected to the first inner support bag transmission assembly and the second inner support bag transmission assembly respectively; the inner support plate drive member has an output shaft, and the output shaft of the inner support plate drive member is connected to the first linkage shaft; the first inner support plate has a fixing part and a supporting part; the first inner support plate fixing part is used to connect to the first inner support bag transmission assembly, and the supporting part of the first inner support plate is detachably connected to the first inner support plate fixing part; the supporting part of the first inner support plate has a wavy edge.

[0014] In a first aspect of the present invention, as a preferred embodiment, a pressure box station is further formed between the bag sealing station and the output end of the roller conveying component; It also includes a pressing box component, which is disposed above the pressing box station. The pressing box component includes a pressing box mounting frame, a pressing box lifting frame, and a pressing box assembly. The pressure box mounting frame is connected to the roller conveying component; both ends of the pressure box lifting frame are connected to the pressure box mounting frame through a slider rail mechanism, so that the pressure box lifting frame can move back and forth in the vertical direction relative to the pressure box mounting frame; a locking component is provided between the pressure box lifting frame and the pressure box mounting frame, and the locking component is used to lock the relative position of the pressure box lifting frame and the pressure box mounting frame. The pressing assembly includes a pressing plate, a pressing drive, and a pressing guide assembly. The pressing drive has a fixed end and a telescopic end. The fixed end of the pressing drive is connected to the pressing lifting frame, and the telescopic end of the pressing drive is connected to the pressing plate. The pressing guide assembly includes a guide rod and a linear bearing. The end of the guide rod is connected to the pressing plate, and the guide rod passes through the pressing lifting frame circumferentially via the linear bearing. The pressing drive provides power to drive the pressing plate to descend, pressing the sealed plastic bag at the pressing station into the carton.

[0015] A second aspect of the present invention is to provide a method for sealing bags using the above-mentioned automatic bag sealing machine for formulated tobacco, comprising the following steps: An automatic bag sealing machine for formulated tobacco as described in any of the first aspects of the present invention is provided, and a cardboard box is provided, wherein a plastic bag is placed inside the cardboard box and the opening of the plastic bag is folded outside the upper edge of the cardboard box. The carton is fed into the roller conveyor and positioned at the bag sealing station. The bag lifting device drives the bag lifting device to descend, bringing the bag lifting tube close to the opening of the plastic bag. The negative pressure forming device generates suction force on the bag suction head to grab the opening of the plastic bag at the bag sealing station. The bag lifting device drives the bag lifting device to rise and lift the opening of the plastic bag to flatten it. The bag-supporting lifting device drives the outer bag-supporting device and the inner bag-supporting device to descend, so that the inner bag-supporting device enters the inside of the plastic bag and the outer bag-supporting device is outside the plastic bag. The outer bag-supporting device drives the opposite sides of the plastic bag to gather inward, and the inner bag-supporting device drives the four corners of the plastic bag to unfold outward. The bag-supporting lifting device drives the outer bag-supporting device and the inner bag-supporting device to rise, lifting the opening of the plastic bag that is stretched on the outer bag-supporting device and the inner bag-supporting device, so that the two sides of the plastic bag are fixed in an "M" shape. The bag-lifting component is then retracted, and the plastic bag is fully stretched and lifted by the bag-supporting component. The sealing component seals the opening of the plastic bag; the sealing component and the bag support component return to their initial state; the roller conveyor sends the sealed carton out from the output end.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The automatic bag sealing machine for formulated tobacco of the present invention feeds a carton into the machine via the input end of a roller conveyor and positions it at the bag sealing station. A bag lifting device drives the bag lifting device downwards, bringing the bag lifting tube close to the opening of the plastic bag. A negative pressure forming device generates suction force in the bag lifting head, gripping the opening of the plastic bag at the sealing station. The bag lifting device then lifts the bag lifting device upwards, raising the opening of the plastic bag until it is flattened. A bag supporting lifting device drives the outer and inner bag supporting devices downwards, allowing the inner bag supporting device to enter the plastic bag, while the outer bag supporting device... On the outside of the plastic bag, the outer bag-supporting device pulls the opposite sides of the plastic bag inward, while the inner bag-supporting device pulls the four corners of the plastic bag outward. The bag-supporting lifting device drives the outer and inner bag-supporting devices to rise, lifting the opening of the plastic bag, which is held tightly against the outer and inner bag-supporting devices, so that the two sides of the plastic bag are fixed in an "M" shape. The bag-lifting component then retracts, and the plastic bag is fully lifted and held by the bag-supporting components. The bag-sealing component then seals the opening of the plastic bag. The sealing component and bag-supporting component return to their initial state. The roller conveyor component sends the sealed carton out from the output end. This automatic bag-lifting and sealing machine for blended tobacco replaces manual tying, improving production efficiency. The saved manpower and resources can be allocated to other uses, improving the consistency of bag sealing quality to meet the high sealing and safety requirements of automatic packing systems for blended tobacco in large-scale production environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the automatic bag sealing machine for formulated tobacco of the present invention; Figure 2 This is a schematic diagram of the internal structure of the automatic bag sealing machine for formulated tobacco of the present invention; Figure 3 This is a front view of the internal structure of the automatic bag sealing machine for formulated tobacco of the present invention; Figure 4 This is a left view of the internal structure of the automatic bag sealing machine for formulated tobacco of the present invention; Figure 5 This is a schematic diagram of the roller conveying component of the automatic bag sealing machine for formulated tobacco of the present invention; Figure 6 This is a schematic diagram of the bag-lifting component of the automatic bag-lifting and sealing machine for formulated tobacco of the present invention; Figure 7 This is a schematic diagram of the first bag-lifting device of the automatic bag-lifting and sealing machine for formulated tobacco of the present invention. Figure 8 This is a partial enlarged view of the first bag-lifting device of the automatic bag-lifting and sealing machine for formulated tobacco of the present invention. Figure 9 This is a schematic diagram of the bag lifting device of the automatic bag sealing machine for formulated tobacco of the present invention. Figure 10 This is a schematic diagram of the sealing component of the automatic bag sealing machine for formulated tobacco of the present invention; Figure 11 This is a schematic diagram of the bag-supporting component of the automatic bag-sealing machine for formulated tobacco of the present invention; Figure 12 This is a schematic diagram of the internal structure of the bag-supporting component of the automatic bag-sealing machine for formulated tobacco of the present invention. Figure 13 This is a cross-sectional view of the internal structure of the bag-supporting component of the automatic bag-sealing machine for formulated tobacco of the present invention; Figure 14 This is a schematic diagram of the pressing box component of the automatic bag sealing machine for formulated tobacco of the present invention; Figure 15 This is a front view of the pressing box component of the automatic bag sealing machine for formulated tobacco of the present invention.

[0018] In the diagram: 10. Frame; 20. Roller conveyor assembly; 21. Conveying device; 211. Conveying mounting frame; 212. Conveying roller; 213. Conveying drive component; 22. Baffle device; 221. Baffle drive component; 222. Baffle plate; 24. Input end; 25. Bag sealing station; 26. Pressing station; 27. Output end; 30. Bag lifting assembly; 31. Bag lifting device; 311. Bag sealing mounting frame; 312. First bag lifting plate; 313. Second bag lifting plate; 314. First bag lifting transmission assembly; 315. Second bag lifting... 316. Lowering transmission assembly; 317. Bag drive motor; 32. Bag drive shaft; 32. First bag lifting device; 321. Bag lifting tube; 3211. Suction head support plate; 322. Bag mounting bend plate; 323. First bag lifting drive component; 324. First bag lifting mounting plate; 33. Second bag lifting device; 331. Second bag lifting mounting plate; 332. Second bag lifting drive component; 40. Bag supporting component; 41. Bag supporting lifting device; 411. First bag supporting mounting frame; 412. Second bag supporting mounting frame; 413. Bag supporting lifting frame; 4131. First side plate; 4132. Two side plates; 4133, First limiting port; 4134, Second limiting port; 414, Second linkage shaft; 415, Bag lifting drive component; 42, Outer bag support device; 421, First outer support plate; 4211, Outer bag support rod; 4212, Elastic component; 422, Second outer support plate; 423, Outer support plate transmission assembly; 424, Outer support plate drive component; 43, Inner bag support device; 431, First inner support plate; 4311, Fixing part; 4312, Bag support part; 432, Second inner support plate; 433, Third inner support plate; 434, Fourth inner support plate; 435, First 436. Second inner bag support transmission assembly; 437. First linkage shaft; 438. Inner support plate drive component; 50. Bag sealing component; 51. First bag sealing mounting frame; 52. Second bag sealing mounting frame; 53. Sealing knife assembly; 531. Sealing knife body; 532. Sealing knife drive component; 54. Sealing knife seat assembly; 541. Sealing knife seat body; 542. Sealing knife seat drive component; 60. Pressing box component; 61. Pressing box mounting frame; 62. Pressing box lifting frame; 63. Pressing box assembly; 631. Pressing box plate; 632. Pressing box drive component; 633. Pressing box guide assembly. Detailed Implementation

[0019] The invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this 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 on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0023] Example 1: like Figure 1-15 As shown, this embodiment provides an automatic bag sealing machine for formulated tobacco, characterized in that it includes a frame 10, and a roller conveying component 20, a bag lifting component 30, a bag supporting component 40 and a bag sealing component 50 are installed in the frame 10; In this embodiment, the frame 10 is a rectangular or square frame structure made of several high-strength steel or aluminum alloy profiles. Its surface is covered with several protective plates and openable / closable doors. Internally, several mounting brackets are fixed to support and secure various components. Various electronic and mechanical components, such as electrical control boxes, sensors, and actuators, are mounted on the frame 10. This design ensures good strength and durability, allowing it to withstand the pressure required for equipment operation and facilitating maintenance. This enables the automatic tobacco bag sealing machine to operate stably without being disturbed by vibration or external environmental factors.

[0024] The roller conveyor component 20 is mainly used for conveying cartons. The roller conveyor component 20 has an input end 24 and an output end 27 at its two ends, and a bag sealing station 25 and a box pressing station 26 are formed sequentially between the input end 24 and the output end 27. The bag lifting component 30 is mainly used to lift and flatten the plastic bag folded outside the carton opening. The bag lifting component 30 is located above the bag sealing station 25. The bag lifting component 30 includes a bag lifting device 31 and a bag lifting device. The bag lifting device is movably mounted on the bag lifting device 31. The bag lifting device includes a plurality of bag lifting tubes 321. One end of each bag lifting tube 321 forms a bag suction head, and the other end is used to connect to a negative pressure forming device. The bag support component 40 is disposed above the bag lifting component 30. The bag support component 40 includes a bag support lifting device 41, an outer bag support device 42, and an inner bag support device 43. The outer bag support device 42 and the inner bag support device 43 are movably disposed on the bag support lifting device 41. The outer bag support device 42 and the inner bag support device 43 are used to process the plastic bag opening into a predetermined folding shape. The sealing component 50 is disposed between the carrying bag component 30 and the supporting bag component 40, and the sealing component 50 seals the opening of the plastic bag.

[0025] Based on the above structure, during use, the carton is fed into the roller conveyor 20 from the input end 24 and positioned at the bag sealing station 25; the bag lifting device 31 drives the bag lifting device to descend, bringing the bag lifting tube 321 close to the opening of the plastic bag. A negative pressure forming device generates suction force on the bag suction head, gripping the opening of the plastic bag at the bag sealing station 25. The bag lifting device 31 then drives the bag lifting device to rise, lifting the opening of the plastic bag until it is flattened; the bag supporting lifting device 41 drives the outer bag supporting device 42 and the inner bag supporting device 43 to descend, allowing the inner bag supporting device 43 to enter the plastic bag while the outer bag supporting device 42 remains in the plastic bag position. Outside the bag, the outer bag support device 42 pulls the opposite sides of the plastic bag inward, while the inner bag support device 43 pulls the four corners of the plastic bag outward. The bag lifting device 41 drives the outer bag support device 42 and the inner bag support device 43 to rise, lifting the opening of the plastic bag that is tightly supported by the outer bag support device 42 and the inner bag support device 43, so that the two sides of the plastic bag are fixed in an "M" shape. At this time, the bag lifting component 30 is retracted, and the plastic bag is completely lifted by the bag support component 40. The bag sealing component 50 seals the opening of the plastic bag. The bag sealing component 50 and the bag support component 40 return to their initial state. The roller conveyor component 20 sends the carton with the sealed plastic bag out from the output end 27. The automatic bag lifting and sealing machine for blended tobacco replaces manual tying, improving production efficiency. At the same time, the saved manpower and resources can be allocated to other uses, improving the consistency of the bag opening sealing quality, so as to meet the high sealing and safety requirements of the automatic packing system for blended tobacco in large-scale production environments.

[0026] Specifically, the roller conveying component 20 includes a conveying device 21 and a baffle device 22; the conveying device 21 includes a conveying mounting frame 211, conveying rollers 212, and a conveying drive component 213; the conveying mounting frame 211 is fixed to the bottom of the frame 10, and the input end 24 and the output end 27 are respectively formed at opposite ends of the conveying mounting frame 211; a plurality of conveying rollers 212 are arranged parallel to each other on the conveying mounting frame 211, and the two ends of the conveying rollers are respectively rotatably connected to opposite sides of the conveying mounting frame 211; the conveying rollers 212 include a driving roller and a driven roller, which are spaced apart; the conveying drive component 213 has an output shaft, and the output shaft of the conveying drive component 213 is connected to the driving roller through a synchronous belt pulley mechanism; the conveying drive component 213 provides power to drive each conveying roller 212 to rotate, thereby moving the carton from the input end 24 to the output end 27.

[0027] The baffle device 22 includes a baffle drive component 221 and a baffle plate 222. The baffle drive component 221 has a fixed end and a telescopic end. The fixed end of the baffle drive component 221 is connected to the conveyor mounting frame 211, and the telescopic end of the baffle drive component 221 is connected to the baffle plate 222. The baffle plate 222 is disposed between two adjacent conveyor rollers 212, so that the baffle plate 222 can extend from between the two adjacent conveyor rollers 212 under the drive of the baffle drive component 221. The box-blocking plate 222 can be extended or retracted, giving it both an interception and a release state. In the interception state, the box-blocking plate 222 extends between two adjacent conveyor rollers 212, restricting the movement of the carton under the drive of the conveyor rollers 212, thus positioning the carton at the bag sealing station 25. In the release state, the box-blocking plate 222 retracts between two adjacent conveyor rollers 212 under the drive of the box-blocking drive component 221, creating a passage for the carton to pass through, allowing the carton to pass smoothly through the bag sealing station 25.

[0028] The bag component 30 in this embodiment includes a bag lifting device 31, a first bag lifting device 32, and a second bag lifting device 33; The bag lifting device 31 includes a bag sealing mounting frame 311, which is a frame structure composed of several profiles. It mainly provides support and installation foundation for each component, and the bag component 30 is installed on the frame 10 through the bag sealing mounting frame 311.

[0029] The bag sealing mounting frame 311 is provided with a first bag lifting plate 312 and a second bag lifting plate 313. The two ends of the back of the first bag lifting plate 312 and the second bag lifting plate 313 are slidably connected to the bag sealing mounting frame 311 through a slide rail slider mechanism. The slide rail is set vertically, so that the first bag lifting plate 312 and the second bag lifting plate 313 can move back and forth in the vertical direction relative to the bag sealing mounting frame 311. The first bag lifting plate 312 and the second bag lifting plate 313 are set opposite to each other on both sides of the bag sealing station 25. The bag-carrying device includes a first bag-carrying device 32 and a second bag-carrying device 33. The first bag-carrying device 32 is disposed on the first bag-carrying lifting plate 312, and the second bag-carrying device 33 is disposed on the second bag-carrying lifting plate 313. Both ends of the first bag-carrying device 32 and the second bag-carrying device 33 are respectively provided with bag-carrying tubes 321. One end of the bag-carrying tube 321 near the bag-carrying sealing station 25 forms a bag-carrying suction head, and the other end is connected to a negative pressure forming device. Based on the above structure, during use, the carton covered with a plastic bag is positioned to the bag sealing station 25 by the roller conveyor component 20; the bag lifting device 31 drives the first bag lifting plate 312 and the second bag lifting plate 313 to descend, and the first bag lifting device 32 and the second bag lifting device 33 set on the first bag lifting plate 312 and the second bag lifting plate 313 descend synchronously to the corresponding position of the plastic bag opening. The negative pressure forming device causes the bag suction head to generate suction force, which grabs the opening of the plastic bag covered with the carton on the bag sealing station 25. The first bag lifting plate 312 and the second bag lifting plate 313 are moved vertically upward to lift the plastic bag opening, so that the plastic bag folded on the edge of the box is flattened upward, completing the bag lifting action of the automatic bag sealing machine. The bag-lifting component 30 of the automatic bag-lifting and sealing machine for formulated tobacco in this embodiment is not only suitable for situations where the opening of the plastic bag is folded to the outside of the upper edge of the carton, but also for situations where the plastic bag is laid flat on the carton. It uses negative pressure to generate suction force to grab the plastic bag. The positioning is simple and can quickly absorb and flatten the plastic bag, greatly improving production efficiency. It will not damage the surface of the plastic bag and has the characteristics of being stable, reliable and highly practical.

[0030] Furthermore, in this embodiment, the bag suction head is provided with a suction head support plate 3211. The suction head support plate 3211 is a circular cover plate with a plurality of evenly distributed ventilation holes on its surface; the edge of the suction head support plate 3211 is connected to the bag suction head. The suction head support plate 3211 provides support for the plastic bag, preventing the plastic bag from deforming and entering the bag tube 321 during gripping, thus avoiding gripping failure and providing a more stable bag gripping effect.

[0031] The first bag-carrying device 32 includes a first bag-carrying mounting plate 324 and a first bag-carrying drive component 323. The bag-carrying tube 321 is installed at opposite ends of the first bag-carrying mounting plate 324. The first bag-carrying drive component 323 has a fixed end and a telescopic end. The fixed end of the first bag-carrying drive component 323 is connected to the first bag-carrying lifting plate 312, and the telescopic end of the first bag-carrying drive component 323 is connected to the first bag-carrying mounting plate 324. Power is provided by the first bag-carrying drive component 323 to drive the first bag-carrying mounting plate 324 to translate relative to the first bag-carrying lifting plate 312, so that the bag-carrying tube 321 extends or retracts at the bag-sealing station 25.

[0032] The second bag-carrying device 33 includes a second bag-carrying mounting plate 331 and a second bag-carrying drive component 332. The bag-carrying tube 321 is installed at opposite ends of the second bag-carrying mounting plate 331. The second bag-carrying drive component 332 has a fixed end and a telescopic end. The fixed end of the second bag-carrying drive component 332 is connected to the second bag-carrying lifting plate 313, and the telescopic end of the second bag-carrying drive component 332 is connected to the second bag-carrying mounting plate 331. Power is provided by the second bag-carrying drive component 332 to drive the second bag-carrying mounting plate 331 to translate relative to the second bag-carrying lifting plate 313, so that the bag-carrying tube 321 extends or retracts at the bag-carrying sealing station 25.

[0033] The first bag-carrying drive unit 323 and the second bag-carrying drive unit 332 drive the first bag-carrying mounting plate 324 and the second bag-carrying mounting plate 331 to move closer or further apart, so that the first bag-carrying mounting plate 324 and the second bag-carrying mounting plate 331 are clamped on opposite sides of the carton. At the same time, the relative positions of the bag-carrying tubes 321 installed on the first bag-carrying mounting plate 324 and the second bag-carrying mounting plate 331 are controlled, so that the bag-carrying tubes 321 are accurately positioned at the opening of the plastic bag on the carton, which can grab the bag more quickly, thereby improving the overall production efficiency.

[0034] Furthermore, a bag mounting bend 322 is provided at the connection between the bag tube 321 and the first bag mounting plate 324. The bag mounting bend 322 has a sliding portion and a connecting portion that are perpendicular to each other. The sliding portion is connected to the first bag mounting plate 324, and the connecting portion is connected to the bag tube 321 via a pipe clamp. The end of the connecting portion of the bag mounting bend 322 is inclined to form a guide portion. By positioning the bag tube 321 opposite to each other at both ends of the first bag mounting plate 324 using the bag mounting bend 322, the bag suction head can be better positioned near the corner of the carton when lifting the bag, facilitating the lifting and flattening of the folded plastic bag. The first bag mounting plate 324 has horizontally arranged grooves at both ends, and the sliding part of the bag mounting bend 322 is slidably connected to the groove. Fasteners are provided between the sliding part of the bag mounting bend 322 and the groove to lock the relative position of the sliding part of the bag mounting bend 322 and the groove. By adjusting the relative position of the bag tubes 321 at both ends of the first bag mounting plate 324 and fixing them with fasteners, the bag requirements for cartons of different sizes and models can be met, resulting in better applicability.

[0035] In this embodiment, the first bag lifting plate 312 is connected to the bag sealing mounting frame 311 at both ends via a slider rail mechanism. A first bag lifting transmission assembly 314 is provided between the first bag lifting plate 312 and the bag sealing mounting frame 311. The first bag lifting transmission assembly 314 includes a first bag driving wheel, a first bag driven wheel, and a first bag synchronous belt. The first bag driving wheel is mounted on the bottom of the bag sealing mounting frame 311 via a fixed bearing seat. The first bag driven wheel is mounted on the top of the bag sealing mounting frame 311 via a sliding bearing seat. The first bag synchronous belt is sleeved around the first bag driving wheel and the first bag driven wheel in the circumferential direction. The back of the first bag lifting plate 312 is connected to the first bag synchronous belt via a belt clamp.

[0036] The second bag lifting plate 313 is connected to the bag sealing mounting frame 311 at both ends via a slider rail mechanism. A second bag lifting transmission assembly 315 is provided between the second bag lifting plate 313 and the bag sealing mounting frame 311. The second bag lifting transmission assembly 315 includes a second bag driving wheel, a second bag driven wheel, and a second bag synchronous belt. The second bag driving wheel is mounted on the bottom of the bag sealing mounting frame 311 via a fixed bearing seat. The second bag driven wheel is mounted on the top of the bag sealing mounting frame 311 via a sliding bearing seat. The second bag synchronous belt is sleeved around the second bag driving wheel and the second bag driven wheel in the circumferential direction. The back of the second bag lifting plate 313 is connected to the second bag synchronous belt via a belt clamp.

[0037] The bag lifting device 31 also includes a bag drive motor 316 and a bag drive shaft 317. The bag drive motor 316 is connected to the bag drive shaft 317 through a reducer. The two ends of the bag drive shaft 317 are respectively connected to the first bag drive wheel and the second bag drive wheel. The bag drive motor 316 provides power to drive the bag drive shaft 317 and the first and second bag drive wheels at both ends to rotate, thereby driving the first bag lifting plate 312 and the second bag lifting plate 313 to lift synchronously. In this way, the plastic bags on opposite sides of the carton can be lifted synchronously, keeping the speed of the bags on both sides consistent and avoiding tearing of the plastic bags.

[0038] In this embodiment, there are two first bag lifting transmission components 314 and two second bag lifting transmission components 315. The two sets of first bag lifting transmission components 314 and second bag lifting transmission components 315 are respectively arranged at opposite ends of the back of the first bag lifting plate 312 and the second bag lifting plate 313, which improves transmission stability and makes the bag lifting process smoother.

[0039] The bag-lifting component 30 in this embodiment can accurately and quickly adsorb and flatten the opening of the plastic bag and lift it to a preset position. The combined action of the first bag-lifting device 32 and the second bag-lifting device 33, along with the negative pressure device connected to the bag-lifting tube 321, generates adsorption force to grasp the plastic bag, resulting in higher precision and stability, ensuring that each bag can be accurately and quickly grasped and moved to the sealing position. The bag-lifting device 31 controls the height of the bag-lifting tube 321, the first bag-lifting drive component 323 and the second bag-lifting drive component 332 control the horizontal relative position of the bag-lifting tube 321, and the sliding connection between the sliding grooves at both ends of the first bag-lifting mounting plate 324 and the sliding part of the bag-lifting mounting curved plate 322 adjusts the horizontal position of adjacent bag-lifting tubes 321. This allows for the handling of plastic bags of different sizes, shapes, and types, enhancing its adaptability and flexibility, and enabling it to perform well in different production environments and bag specifications.

[0040] Specifically, the bag sealing component 50 in this embodiment includes a first bag sealing mounting frame 51 and a second bag sealing mounting frame 52. Both the first bag sealing mounting frame 51 and the second bag sealing mounting frame 52 are connected to the bag sealing mounting frame 311 via a slider rail mechanism. Both the first bag sealing mounting frame 51 and the second bag sealing mounting frame 52 can move back and forth in the vertical direction relative to the bag sealing mounting frame 311. The first bag sealing mounting frame 51 and the second bag sealing mounting frame 52 are arranged opposite each other on both sides of the bag sealing station 25.

[0041] The sealing component 50 further includes a sealing knife assembly 53 and a sealing knife seat assembly 54. The sealing knife assembly 53 is disposed on the first sealing bag mounting frame 51. The sealing knife assembly 53 includes a sealing knife body 531, a sealing knife drive component 532, and a heating element. The sealing knife drive component 532 has a fixed end and a telescopic end. The fixed end of the sealing knife drive component 532 is fixed to the first sealing bag mounting frame 51, and the telescopic end of the sealing knife drive component 532 is connected to the sealing knife body 531. The heating element is connected to the sealing knife body 531. The sealing knife seat assembly 54 is disposed on the second sealing bag mounting frame 52. The sealing knife seat assembly 54 includes a sealing knife seat body 541 and a sealing knife seat drive member 542. The sealing knife seat drive member 542 has a fixed end and a telescopic end. The fixed end of the sealing knife seat drive member 542 is fixed to the second bag sealing mounting bracket 52, and the telescopic end of the sealing knife seat drive member 542 is connected to the sealing knife seat body. The sealing knife drive member 532 and the sealing knife seat drive member 542 respectively drive the sealing knife body 531 and the sealing knife seat body 541 to move closer to each other, pressing the opening of the plastic bag between the sealing knife body 531 and the sealing knife seat body 541, thereby sealing the plastic bag.

[0042] The bag-supporting lifting device 41 in this embodiment includes a bag-supporting mounting frame, a bag-supporting lifting frame 413, and a bag-supporting lifting drive component 415. The bag-supporting lifting frame 413 is slidably connected to the bag-supporting mounting frame in the vertical direction, and the bag-supporting lifting drive component 415 is used to drive the bag-supporting lifting frame 413 to reciprocate in the vertical direction relative to the bag-supporting mounting frame. The external support bag device 42 includes an external support plate assembly and an external support plate drive member 424; the external support plate assembly includes a first external support plate 421 and a second external support plate 422, the tops of the first external support plate 421 and the second external support plate 422 are slidably connected to the bag lifting frame 413 in a horizontal direction; the external support plate drive member 424 is used to drive the first external support plate 421 and the second external support plate 422 to move closer to or further away from each other; The inner support bag device 43 includes a first inner support bag assembly and a second inner support bag assembly, which are respectively disposed on opposite sides of the outer support plate assembly. The first inner support bag assembly includes a first inner support plate 431 and a second inner support plate 432, and the second inner support bag assembly includes a third inner support plate 433 and a fourth inner support plate 434. The tops of the first inner support plate 431, the second inner support plate 432, the third inner support plate 433, and the fourth inner support plate 434 are all slidably connected to the bag lifting frame 413 in a horizontal direction. The outer support plate driving member 424 is used to drive the first inner support plate 431 and the second inner support plate 432, the third inner support plate 433 and the fourth inner support plate 434 to move closer to or further away from each other.

[0043] In use, after the plastic bag is lifted by the bag-lifting component 30, the bag-supporting lifting drive 415 provides power to drive the bag-supporting lifting frame 413 to descend, causing the outer bag-supporting device 42 and inner bag-supporting device 43 and other components installed on the bag-supporting lifting frame 413 to descend, so that the first inner support plate 431, the second inner support plate 432, the third inner support plate 433 and the fourth inner support plate 434 enter the plastic bag. The first outer support plate 421 and the second outer support plate 422 are on opposite sides of the outside of the plastic bag. The outer support plate drive 424 drives the first outer support plate 421 and the second outer support plate 422 to move closer to each other, causing the plastic film in contact with the first outer support plate 421 and the second outer support plate 422 to gather inward. At the same time, the outer support plate drive 424 drives the first outer support plate 421 and the second outer support plate 422 to move closer to each other. The first inner support plate 431 and the second inner support plate 432 move away from each other, and the third inner support plate 433 and the fourth inner support plate 434 move away from each other, causing the four corners of the plastic film to unfold outwards. The bag-supporting lifting drive component 415 provides power to drive the bag-supporting lifting frame 413 to rise, lifting the plastic bag opening that is held tightly on the outer bag-supporting device 42 and the inner bag-supporting device 43. At this time, it can be ensured that the two sides of the plastic bag are fixed in an "M" shape. The bag-lifting component 30 retracts at this time, and is completely held and lifted by the bag-supporting component 40, completing the bag-supporting action of the plastic bag. This ensures that the plastic bag opening can maintain a flat shape during the subsequent sealing process, thereby ensuring the sealing effect and packaging aesthetics, and meeting the high sealing and safety requirements of the automatic packing system for compound tobacco for the plastic bag opening. By processing the plastic bag opening according to the predetermined folding shape by the outer bag-supporting device 42 and the inner bag-supporting device 43, the resulting plastic bag seal is smaller, which facilitates the layout of the sealing components, makes the overall structure of the equipment compact, and is conducive to optimizing the internal space of the automatic bag-lifting and sealing machine.

[0044] Furthermore, the bag lifting frame 413 has a first side plate 4131 and a second side plate 4132 disposed on opposite sides, and a bottom plate disposed at the bottom. The bottom plate has a first limiting opening 4133 and a second limiting opening 4134. The first outer support plate 421, the first inner support plate 431 and the third inner support plate 433 extend out from the first limiting opening 4133; the second outer support plate 422, the second inner support plate 432 and the fourth inner support plate 434 extend out from the second limiting opening 4134. The first side plate 4131 and the second side plate 4132 provide a foundation for the installation and fixation of the outer bag support device 42 and the inner bag support device 43. The first limiting port 4133 and the second limiting port 4134 respectively allow the first outer support plate 421, the first inner support plate 431, the third inner support plate 433 and the second outer support plate 422, the second inner support plate 432 and the fourth inner support plate 434, which are responsible for supporting the opposite sides of the opening of the plastic bag, to extend out, so that there is no interference between the support plates, and at the same time, it prevents the support plates from excessively displacing and pulling the plastic bag during the bag supporting process.

[0045] Specifically, the tops of the first outer support plate 421 and the second outer support plate 422 are connected to the first side plate 4131 via a slider and slide rail mechanism; the outer support bag device 42 also includes an outer support plate transmission assembly 423, and the outer support plate drive member 424 is connected to the first outer support plate 421 and the second outer support plate 422 respectively via the outer support plate transmission assembly 423.

[0046] The outer support plate transmission assembly 423 includes an outer support bag drive wheel, an outer support bag driven wheel, and an outer support bag synchronous belt. The outer support bag drive wheel is mounted on one end of the first side plate 4131 via a fixed bearing seat, and the outer support bag driven wheel is mounted on the other end of the first side plate 4131 via a sliding bearing seat. The outer support bag synchronous belt is sleeved around the outer support bag drive wheel and the outer support bag driven wheel in the circumferential direction, thereby enabling the outer support bag synchronous belt to have forward and return strokes. The outer support plate drive member 424 has an output shaft, and the output shaft of the outer support plate drive member 424 is connected to the outer support bag drive wheel. The first outer support plate 421 and the second outer support plate 422 are respectively fixed to the forward and return strokes of the outer support bag synchronous belt via belt clamps.

[0047] The outer support plate drive component 424 provides power to drive the outer support bag drive wheel and the outer support bag driven wheel to rotate, which drives the outer support bag timing belt to form forward and return strokes in opposite directions on opposite sides. This causes the first outer support plate 421 and the second outer support plate 422, which are respectively fixed on the forward and return strokes of the outer support bag timing belt, to move synchronously in opposite directions, so that the first outer support plate 421 and the second outer support plate 422 move closer or further away from each other.

[0048] The tops of the first inner support plate 431 and the second inner support plate 432 are connected to the first side plate 4131 via a slider and slide rail mechanism; the tops of the third inner support plate 433 and the fourth inner support plate 434 are connected to the second side plate 4132 via a slider and slide rail mechanism. The inner support bag device 43 further includes a first inner support bag transmission assembly 435 and a second inner support bag transmission assembly 436. The inner support plate drive member 438 is connected to the first inner support plate 431 and the second inner support plate 432 respectively through the first inner support bag transmission assembly 435. The inner support plate drive member 438 is connected to the third inner support plate 433 and the fourth inner support plate 434 respectively through the second inner support bag transmission assembly 436.

[0049] The first inner support bag transmission assembly 435 includes a first inner support bag drive wheel, a first inner support bag driven wheel, and a first inner support bag synchronous belt. The first inner support bag drive wheel is mounted on one end of the first side plate 4131 via a fixed bearing seat, and the first inner support bag driven wheel is mounted on the other end of the first side plate 4131 via a sliding bearing seat. The first inner support bag synchronous belt is sleeved around the first inner support bag drive wheel and the first inner support bag driven wheel in the circumferential direction, thereby enabling the first inner support bag synchronous belt to have forward and return strokes. The first inner support plate 431 and the second inner support plate 432 are respectively fixed to the forward and return strokes of the first inner support bag synchronous belt via belt clips. The second inner support bag transmission assembly 436 includes a second inner support bag drive wheel, a second inner support bag driven wheel, and a second inner support bag synchronous belt. The second inner support bag drive wheel is mounted on one end of the second side plate 4132 via a fixed bearing seat, and the second inner support bag driven wheel is mounted on the other end of the second side plate 4132 via a sliding bearing seat. The second inner support bag synchronous belt is sleeved around the second inner support bag drive wheel and the second inner support bag driven wheel in the circumferential direction, thereby enabling the second inner support bag synchronous belt to have forward and return strokes. The third inner support plate 433 and the fourth inner support plate 434 are respectively fixed to the forward and return strokes of the second inner support bag synchronous belt via belt clips. The inner support bag device 43 further includes a first linkage shaft 437, the two ends of which are respectively connected to the first inner support bag drive wheel and the second inner support bag drive wheel; the inner support plate drive member 438 has an output shaft, and the output shaft of the inner support plate drive member 438 is connected to the first linkage shaft 437.

[0050] Powered by the inner support plate drive component 438, the first inner support bag drive wheel and the second inner support bag drive wheel at both ends are driven to rotate synchronously via the first linkage shaft 437. This simultaneously enables the first inner support plate 431 and the second inner support plate 432, which are connected to the forward and return synchronous belts of the first inner support bag, to move closer or further away from each other. The third inner support plate 433 and the fourth inner support plate 434, which are connected to the forward and return synchronous belts of the second inner support bag, to move closer or further away from each other. This allows the four corners of the plastic bag opening to be opened synchronously, further improving the flatness of the bag opening.

[0051] In this embodiment, buffer components are provided on opposite sides of the first outer support plate 421 and the second outer support plate 422. Each buffer component includes an outer support rod 4211 and an elastic element 4212. The two ends of the outer support rod 4211 are connected to the first outer support plate 421 via the elastic element 4212. The elastic element 4212 can be implemented as a telescopic rod consisting of several interlocking round rods with internal springs, thereby giving the outer support rod 4211 an elastic force that moves it closer to or away from the first outer support plate 421. By providing buffer components, the flexibility of the contact area between the first outer support plate 421 and the plastic bag is improved. When the plastic bag is stretched to a certain extent, the elastic element 4212 is compressed, causing the outer support rod 4211 to move closer to the first outer support plate 421, while simultaneously providing elastic force to the plastic bag. This prevents the plastic bag from being torn and also improves the supporting and fixing ability of the first and second outer support plates 421 and 422 for the plastic bag, preventing the plastic bag from falling off.

[0052] In this embodiment, the first inner support plate 431 has a fixing part 4311 and a bag-supporting part 4312. The fixing part 4311 of the first inner support plate 431 is used to connect with the first inner bag-supporting transmission assembly 435, and the bag-supporting part 4312 of the first inner support plate 431 is detachably connected to the fixing part 4311 of the first inner support plate 431. The bag-supporting part 4312 of the first inner support plate 431 has a wavy edge. The wavy bag-supporting part 4312 is beneficial for supporting and fixing the plastic bag, preventing the plastic bag from falling off, and avoiding sharp corners from tearing the plastic bag. By detachably connecting the bag-supporting part 4312 of the first inner support plate 431 to the fixing part 4311, it is easy to replace the bag-supporting part 4312 of different models, sizes, and shapes according to actual needs, so as to realize diverse bag-supporting needs and have strong practicality.

[0053] The specific structures of the second inner support plate 432, the third inner support plate 433, and the fourth inner support plate 434 are the same as those of the first inner support plate 431, and will not be described again here.

[0054] The bag support mounting frame of this embodiment includes a first bag support mounting frame 411 and a second bag support mounting frame 412 arranged opposite to each other. The first bag support mounting frame 411 is vertically connected to a first lifting end plate through a slider slide rail mechanism, and the second bag support mounting frame 412 is vertically connected to a second lifting end plate through a slider slide rail mechanism. The first lifting end plate and the second lifting end plate are respectively fixed to opposite ends of the bag support lifting frame 413.

[0055] The bag-supporting lifting device 41 further includes a first bag-supporting lifting transmission assembly and a second bag-supporting lifting transmission assembly; the first bag-supporting lifting transmission assembly includes a first bag-supporting lifting drive wheel, a first bag-supporting lifting driven wheel, and a first bag-supporting lifting synchronous belt. The first bag-supporting lifting drive wheel is mounted on the top of the first bag-supporting mounting frame 411 via a fixed bearing seat, the first bag-supporting lifting driven wheel is mounted on the bottom of the first bag-supporting mounting frame 411 via a sliding bearing seat, and the first bag-supporting lifting synchronous belt is sleeved around the first bag-supporting lifting drive wheel and the first bag-supporting lifting driven wheel circumferentially; the first lifting end plate passes through... A belt clamp is fixed to the first bag-supporting lifting synchronous belt; the second bag-supporting lifting transmission assembly includes a second bag-supporting lifting drive wheel, a second bag-supporting lifting driven wheel, and a second bag-supporting lifting synchronous belt. The second bag-supporting lifting drive wheel is mounted on the top of the second bag-supporting mounting frame 412 via a fixed bearing seat, and the second bag-supporting lifting driven wheel is mounted on the bottom of the second bag-supporting mounting frame 412 via a sliding bearing seat. The second bag-supporting lifting synchronous belt is sleeved around the second bag-supporting lifting drive wheel and the second bag-supporting lifting driven wheel in the circumferential direction; the second lifting end plate is fixed to the second bag-supporting lifting synchronous belt via a belt clamp. The bag-supporting lifting device 41 further includes a second linkage shaft 414, the two ends of which are respectively connected to the first bag-supporting lifting drive wheel and the second bag-supporting lifting drive wheel; the bag-supporting lifting drive component 415 has an output shaft, the output shaft of which is connected to the second linkage shaft 414 through a reducer. The first bag-supporting mounting bracket 411 and the second bag-supporting mounting bracket 412 support and drive the opposite ends of the bag-supporting lifting frame 413, ensuring the stability of the bag-supporting lifting frame 413 during the lifting process, making the bag-supporting process smoother, and ensuring that the bag can maintain a flat shape during the sealing process, meeting the high sealing and safety requirements of the automatic packing system for compound tobacco for the plastic bag opening.

[0056] In some preferred embodiments, a pressing box component 60 is also included, which is disposed above the pressing box station 26. The pressing box component 60 includes a pressing box mounting frame 61, a pressing box lifting frame 62, and a pressing box assembly 63. The pressure box mounting frame 61 is connected to the roller conveying component 20; the two ends of the pressure box lifting frame 62 are respectively connected to the pressure box mounting frame 61 through a slider slide rail mechanism, so that the pressure box lifting frame 62 can move back and forth in the vertical direction relative to the pressure box mounting frame 61; a locking component is provided between the pressure box lifting frame 62 and the pressure box mounting frame 61, and the locking component is used to lock the relative position of the pressure box lifting frame 62 and the pressure box mounting frame 61; The pressing assembly 63 includes a pressing plate 631, a pressing drive component 632, and a pressing guide assembly 633. The pressing drive component 632 has a fixed end and a telescopic end. The fixed end of the pressing drive component 632 is connected to the pressing lifting frame 62, and the telescopic end of the pressing drive component 632 is connected to the pressing plate 631. The pressing guide assembly 633 includes a guide rod and a linear bearing. The end of the guide rod is connected to the pressing plate 631, and the guide rod passes through the pressing lifting frame 62 circumferentially via the linear bearing. The pressing drive component 632 provides power to drive the pressing plate 631 to descend, pressing the sealed plastic bag on the pressing station 26 into the carton. By setting a certain pressing pressure, holding time, or number of pressing cycles, the consistency of the pressing quality can be ensured, avoiding the uncertainty of manual pressing that may cause the tobacco to be not pressed properly, or the problem that too much tobacco debris may be caused by excessive pressure, affecting the quality.

[0057] Example 2: This embodiment provides a bag sealing method using the above-mentioned automatic bag sealing machine for formulated tobacco, based on Embodiment 1, including the following steps: Step S1: Provide a cardboard box for the automatic bag sealing machine for formulated tobacco as described in Example 1, wherein a plastic bag is placed inside the cardboard box and the opening of the plastic bag is folded over the outer side of the upper edge of the cardboard box.

[0058] Step S2: The carton is fed into the roller conveyor 20 from the input end 24 and positioned at the bag sealing station 25; Step S3: Lift and flatten the opening of the plastic bag using the bag-lifting component 30; Specifically, the bag lifting device 31 drives the first bag lifting plate 312 and the second bag lifting plate 313 to descend. The first bag lifting device 32 and the second bag lifting device 33, which are set on the first bag lifting plate 312 and the second bag lifting plate 313, descend synchronously to the corresponding positions of the plastic bag opening. The negative pressure forming device causes the bag suction head to generate suction force, which grabs the opening of the plastic bag on the carton on the bag sealing station 25. The first bag lifting plate 312 and the second bag lifting plate 313 are moved vertically upward to lift the opening of the plastic bag, so that the plastic bag folded on the edge of the box is flattened upward, thus completing the bag lifting action of the automatic bag sealing machine.

[0059] Step S4: Lift the opening of the plastic bag using the bag support component 40 to fix the two sides of the plastic bag in an "M" shape; Specifically, the bag-supporting lifting drive 415 provides power to drive the bag-supporting lifting frame 413 to descend, causing components such as the outer bag-supporting device 42 and the inner bag-supporting device 43 mounted on the bag-supporting lifting frame 413 to descend, so that the first inner support plate 431, the second inner support plate 432, the third inner support plate 433, and the fourth inner support plate 434 enter the interior of the plastic bag, while the first outer support plate 421 and the second outer support plate 422 are on opposite sides of the outside of the plastic bag; the outer support plate drive 424 drives the first outer support plate 421 and the second outer support plate 422 to move closer to each other, causing the first outer support plate 421 and the second outer support plate 422 to move closer together. The plastic film in contact with the second inner support plate 431 and the second inner support plate 432 move away from each other, and the third inner support plate 433 and the fourth inner support plate 434 move away from each other, causing the four corners of the plastic film to unfold outward. The bag lifting drive 415 provides power to drive the bag lifting frame 413 to rise, lifting the plastic bag opening that is supported on the outer bag supporting device 42 and the inner bag supporting device 43. At this time, it can be ensured that the two sides of the plastic bag are fixed in an "M" shape. The bag lifting component 30 retracts at this time and is completely supported and lifted by the bag supporting component 40, completing the bag supporting action of the plastic bag.

[0060] Step S5: The bag sealing component 50 seals the opening of the plastic bag; the bag sealing component 50 and the bag supporting component 40 return to their initial state; the roller conveying component 20 positions the carton with the sealed plastic bag to the pressing station 26.

[0061] Step S6: The pressing drive 632 provides power to drive the pressing plate 631 to descend, pressing the plastic bag seal on the pressing station 26 into the carton; the pressing plate 631 presses into the carton according to the preset pressing pressure, holding time and pressing number of times, and after completion, the pressing plate 631 returns to the initial state.

[0062] Step S7: The roller conveyor 20 sends the carton with the plastic bag sealed out from the output end 27.

[0063] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. An automatic bag sealing machine for formulated tobacco, characterized in that, The machine includes a frame, within which a roller conveyor, a bag lifting component, a bag supporting component, and a bag sealing component are installed; The roller conveyor is used to convey cartons. The roller conveyor has an input end and an output end at its two ends, and a bag sealing station is formed between the input end and the output end. The bag-lifting component is positioned above the bag-sealing station. The bag-lifting component includes a bag-lifting device and a bag-lifting device. The bag-lifting device is vertically and vertically mounted on the bag-lifting device. The bag-lifting device includes several bag-lifting tubes, one end of which forms a bag-lifting suction head, and the other end is used to connect to a negative pressure forming device. The bag support component is disposed above the bag lifting component. The bag support component includes a bag lifting device, an outer bag support device, and an inner bag support device. The outer bag support device and the inner bag support device are vertically and vertically disposed on the bag lifting device. The outer bag support device and the inner bag support device are used to process the plastic bag opening into a predetermined folding shape. The sealing component is located between the carrying bag component and the supporting bag component, and the sealing component seals the opening of the plastic bag.

2. The automatic bag sealing machine for formulated tobacco as described in claim 1, characterized in that, The roller conveying component includes a conveying device and a baffle device; The conveying device includes a conveying mounting frame, conveying rollers, and a conveying drive component. The conveying mounting frame is fixed to the machine frame, and the input end and output end are respectively formed at opposite ends of the conveying mounting frame. A plurality of conveying rollers are arranged parallel to the conveying mounting frame, and the two ends of each conveying roller are rotatably connected to opposite sides of the conveying mounting frame. Each conveying roller includes a driving roller and a driven roller, which are spaced apart. The conveying drive component has an output shaft, which is connected to the driving rollers via a synchronous belt pulley mechanism. The conveying drive component provides power to drive each conveying roller to rotate, thereby moving the carton from the input end to the output end. The baffle device includes a baffle drive and a baffle plate. The baffle drive has a fixed end and a telescopic end. The fixed end of the baffle drive is connected to the conveyor mounting frame, and the telescopic end of the baffle drive is connected to the baffle plate. The baffle plate is disposed between two adjacent conveyor rollers and has an interception state and a release state. In the interception state, the baffle plate extends from between the two adjacent conveyor rollers under the drive of the baffle drive, positioning the carton at the bag sealing station. In the release state, the baffle plate retracts from between the two adjacent conveyor rollers under the drive of the baffle drive, allowing the carton to pass through the bag sealing station.

3. The automatic bag sealing machine for formulated tobacco as described in claim 1, characterized in that, The bag lifting device includes a bag sealing mounting frame, on which a first bag lifting plate and a second bag lifting plate are slidably connected. Both the first bag lifting plate and the second bag lifting plate can move back and forth in the vertical direction relative to the bag sealing mounting frame. The first bag lifting plate and the second bag lifting plate are arranged opposite each other on opposite sides of the bag sealing station. The bag-carrying device includes a first bag-carrying device and a second bag-carrying device. The first bag-carrying device is disposed on the first bag-carrying lifting plate, and the second bag-carrying device is disposed on the second bag-carrying lifting plate. Both ends of the first bag-carrying device and the second bag-carrying device are connected to the bag-carrying tube. The bag-carrying suction head of the bag-carrying tube is provided with a suction head support plate. The edge of the suction head support plate is connected to the bag-carrying suction head. A plurality of ventilation holes are evenly distributed on the suction head support plate. The first bag-carrying device includes a first bag-carrying mounting plate and a first bag-carrying driving component. The bag-carrying tube is installed at opposite ends of the first bag-carrying mounting plate. The first bag-carrying driving component has a fixed end and a telescopic end. The fixed end of the first bag-carrying driving component is connected to the first bag-carrying lifting plate, and the telescopic end of the first bag-carrying driving component is connected to the first bag-carrying mounting plate. Power is provided by the first bag-carrying driving component to drive the first bag-carrying mounting plate to translate relative to the first bag-carrying lifting plate, so that the bag-carrying tube extends or retracts at the bag-carrying station. A bag mounting bend is provided at the connection between the bag tube and the first bag mounting plate. The bag mounting bend has a sliding part and a connecting part that are perpendicular to each other. The sliding part is connected to the first bag mounting plate, and the connecting part is connected to the bag tube through a pipe clamp. The end of the connecting part of the bag mounting bend is inclined to form a guide part. The first bag mounting plate has horizontally provided grooves at both ends, and the sliding part of the bag mounting bend is slidably connected in the grooves. A fastener is provided between the sliding part of the bag mounting bend and the groove, and the fastener is used to lock the relative position of the sliding part of the bag mounting bend and the groove.

4. The automatic bag sealing machine for formulated tobacco as described in claim 3, characterized in that, The first bag lifting plate has two ends connected to the bag sealing mounting frame via a slider rail mechanism. A first bag lifting transmission assembly is provided between the first bag lifting plate and the bag sealing mounting frame. The first bag lifting transmission assembly includes a first bag driving wheel, a first bag driven wheel, and a first bag synchronous belt. The first bag driving wheel is mounted on the bottom of the bag sealing mounting frame via a fixed bearing seat, and the first bag driven wheel is mounted on the top of the bag sealing mounting frame via a sliding bearing seat. The first bag synchronous belt is sleeved around the first bag driving wheel and the first bag driven wheel in the circumferential direction. The back of the first bag lifting plate is connected to the first bag synchronous belt via a belt clamp. The second bag lifting plate has two ends connected to the bag sealing mounting frame via a slider rail mechanism. A second bag lifting transmission assembly is provided between the second bag lifting plate and the bag sealing mounting frame. The second bag lifting transmission assembly includes a second bag driving wheel, a second bag driven wheel, and a second bag synchronous belt. The second bag driving wheel is mounted on the bottom of the bag sealing mounting frame via a fixed bearing seat, and the second bag driven wheel is mounted on the top of the bag sealing mounting frame via a sliding bearing seat. The second bag synchronous belt is sleeved around the second bag driving wheel and the second bag driven wheel in the circumferential direction. The back of the second bag lifting plate is connected to the second bag synchronous belt via a belt clamp. The bag lifting device also includes a bag drive motor and a bag drive shaft. The bag drive motor is connected to the bag drive shaft through a reducer. The two ends of the bag drive shaft are respectively connected to the first bag drive wheel and the second bag drive wheel. The bag drive motor provides power to drive the bag drive shaft and the first and second bag drive wheels at both ends to rotate, thereby driving the first and second bag lifting plates to lift and lower synchronously.

5. The automatic bag sealing machine for formulated tobacco as described in claim 4, characterized in that, The bag sealing component includes a first bag sealing mounting frame and a second bag sealing mounting frame. Both the first and second bag sealing mounting frames are connected to the bag sealing mounting frame via a slider and slide rail mechanism. Both the first and second bag sealing mounting frames can move back and forth vertically relative to the bag sealing mounting frame. The first and second bag sealing mounting frames are positioned opposite each other on opposite sides of the bag sealing station. The sealing component further includes a sealing knife assembly and a sealing knife seat assembly. The sealing knife assembly is disposed on the first sealing mounting frame and includes a sealing knife body, a sealing knife drive component, and a heating element. The sealing knife drive component has a fixed end and a telescopic end. The fixed end of the sealing knife drive component is fixed to the first sealing mounting frame, and the telescopic end of the sealing knife drive component is connected to the sealing knife body. The heating element is connected to the sealing knife body. The sealing knife seat assembly is disposed on the second sealing mounting frame and includes a sealing knife seat body and a sealing knife seat drive component. The sealing knife seat drive component has a fixed end and a telescopic end. The fixed end of the sealing knife seat drive component is fixed to the second sealing mounting frame, and the telescopic end of the sealing knife seat drive component is connected to the sealing knife seat body. By the sealing knife drive component and the sealing knife seat drive component respectively driving the sealing knife body and the sealing knife seat body to move closer to each other, the opening of the plastic bag is pressed between the sealing knife body and the sealing knife seat body, thereby sealing the plastic bag.

6. The automatic bag sealing machine for formulated tobacco as described in claim 1, characterized in that, The bag-supporting lifting device includes a bag-supporting mounting frame, a bag-supporting lifting frame, and a bag-supporting lifting drive component. The bag-supporting lifting frame is slidably connected to the bag-supporting mounting frame in the vertical direction, and the bag-supporting lifting drive component is used to drive the bag-supporting lifting frame to reciprocate in the vertical direction relative to the bag-supporting mounting frame. The external support bag device includes an external support plate assembly and an external support plate drive component; the external support plate assembly includes a first external support plate and a second external support plate, the tops of the first external support plate and the second external support plate are slidably connected to the bag lifting frame in a horizontal direction; the external support plate drive component is used to drive the first external support plate and the second external support plate to move closer to or further away from each other. The inner support bag device includes a first inner support bag assembly and a second inner support bag assembly, which are respectively disposed on opposite sides of the outer support plate assembly; the first inner support bag assembly includes a first inner support plate and a second inner support plate, and the second inner support bag assembly includes a third inner support plate and a fourth inner support plate, the tops of the first inner support plate, the second inner support plate, the third inner support plate and the fourth inner support plate are all slidably connected to the bag lifting frame in a horizontal direction; the outer support plate driving component is used to drive the first inner support plate and the second inner support plate, and the third inner support plate and the fourth inner support plate to move closer to or further away from each other.

7. The automatic bag sealing machine for formulated tobacco as described in claim 6, characterized in that, The bag-supporting lifting frame has a first side plate and a second side plate disposed on opposite sides, and a bottom plate disposed at the bottom. The bottom plate has a first limiting opening and a second limiting opening. The first outer support plate, the first inner support plate, and the third inner support plate extend out from the first limiting opening; the second outer support plate, the second inner support plate, and the fourth inner support plate extend out from the second limiting opening; the tops of the first outer support plate and the second outer support plate are connected to the first side plate through a slider rail mechanism. The outer support bag device further includes an outer support plate transmission assembly. The outer support plate drive is connected to the first outer support plate and the second outer support plate respectively through the outer support plate transmission assembly. A buffer assembly is provided on the first outer support plate. The buffer assembly includes an outer support bag rod and an elastic element. Both ends of the outer support bag rod are connected to the first outer support plate through the elastic element. This allows the outer support bag rod to have an elastic force that moves closer to or away from the first outer support plate.

8. The automatic bag sealing machine for formulated tobacco as described in claim 7, characterized in that, The tops of the first inner support plate and the second inner support plate are connected to the first side plate via a slider-rail mechanism; the tops of the third inner support plate and the fourth inner support plate are connected to the second side plate via a slider-rail mechanism; the inner support bag device further includes a first inner support bag transmission assembly, a second inner support bag transmission assembly, and a first linkage shaft; the inner support plate drive member is connected to the first inner support plate and the second inner support plate respectively via the first inner support bag transmission assembly; the inner support plate drive member is connected to the third inner support plate and the fourth inner support plate respectively via the second inner support bag transmission assembly; both ends of the first linkage shaft are connected to the first inner support bag transmission assembly and the second inner support bag transmission assembly respectively; the inner support plate drive member has an output shaft, and the output shaft of the inner support plate drive member is connected to the first linkage shaft; the first inner support plate has a fixing part and a bag-supporting part; the fixing part of the first inner support plate is used to connect with the first inner support bag transmission assembly, and the bag-supporting part of the first inner support plate is detachably connected to the fixing part of the first inner support plate; the bag-supporting part of the first inner support plate has a wavy edge.

9. An automatic bag sealing machine for formulated tobacco as described in claim 6, characterized in that, A pressure box station is also formed between the bag sealing station and the output end of the roller conveying component; It also includes a pressing box component, which is disposed above the pressing box station. The pressing box component includes a pressing box mounting frame, a pressing box lifting frame, and a pressing box assembly. The pressure box mounting frame is connected to the roller conveying component; both ends of the pressure box lifting frame are connected to the pressure box mounting frame through a slider rail mechanism, so that the pressure box lifting frame can move back and forth in the vertical direction relative to the pressure box mounting frame; a locking component is provided between the pressure box lifting frame and the pressure box mounting frame, and the locking component is used to lock the relative position of the pressure box lifting frame and the pressure box mounting frame. The pressing assembly includes a pressing plate, a pressing drive, and a pressing guide assembly. The pressing drive has a fixed end and a telescopic end. The fixed end of the pressing drive is connected to the pressing lifting frame, and the telescopic end of the pressing drive is connected to the pressing plate. The pressing guide assembly includes a guide rod and a linear bearing. The end of the guide rod is connected to the pressing plate, and the guide rod passes through the pressing lifting frame circumferentially via the linear bearing. The pressing drive provides power to drive the pressing plate to descend, pressing the sealed plastic bag at the pressing station into the carton.

10. A method for sealing a bag, characterized in that, Includes the following steps: An automatic bag sealing machine for formulated tobacco as described in any one of claims 1-9 is provided, and a cardboard box is provided, wherein a plastic bag is placed inside the cardboard box, and the opening of the plastic bag is folded over the outer side of the upper edge of the cardboard box. The carton is fed into the roller conveyor and positioned at the bag sealing station. The bag lifting device drives the bag lifting device to descend, bringing the bag lifting tube close to the opening of the plastic bag. The negative pressure forming device generates suction force on the bag suction head to grab the opening of the plastic bag at the bag sealing station. The bag lifting device drives the bag lifting device to rise and lift the opening of the plastic bag to flatten it. The bag-supporting lifting device drives the outer bag-supporting device and the inner bag-supporting device to descend, so that the inner bag-supporting device enters the inside of the plastic bag and the outer bag-supporting device is outside the plastic bag. The outer bag-supporting device drives the opposite sides of the plastic bag to gather inward, and the inner bag-supporting device drives the four corners of the plastic bag to unfold outward. The bag-supporting lifting device drives the outer bag-supporting device and the inner bag-supporting device to rise, lifting the opening of the plastic bag that is stretched on the outer bag-supporting device and the inner bag-supporting device, so that the two sides of the plastic bag are fixed in an "M" shape. The bag-lifting component is then retracted, and the plastic bag is fully stretched and lifted by the bag-supporting component. The sealing component seals the opening of the plastic bag; the sealing component and the bag support component return to their initial state; the roller conveyor sends the sealed carton out from the output end.

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