A fully servoed packaging capper

Abstract

The application discloses a full-servo packaging sealing machine, which comprises a covering station, a material feeding and conveying assembly configured to convey materials towards the covering station, a film supplying assembly configured to provide a packaging film to the covering station, a guide arranged opposite to the covering station and configured to guide the packaging film to fold and wrap the materials, and a sealing and cutting assembly located at one side of the covering station and comprising an upper sealing and cutting member, a lower sealing and cutting member and a first power source, wherein the first power source is configured to drive the relative movement of the upper sealing and cutting member and the lower sealing and cutting member, one of the upper sealing and cutting member and the lower sealing and cutting member comprises a mounting block, a hot pressing block and a cutter, the cutter is fixed on the mounting block, and the hot pressing block is connected to the mounting block through a first elastic member. The application realizes seamless connection and high coordination of the hot sealing and cutting actions under single power driving, avoids errors possibly caused by timing coordination of multiple driving, and improves the reliability of the actions and the consistency of the sealing and cutting quality.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment technology, and in particular to a fully servo-controlled packaging and sealing machine. Background Technology

[0002] As a disposable hygiene product, diapers, after the core absorbent material is manufactured, must undergo reliable packaging and sealing processes. This process not only provides physical protection for the product, preventing contamination or moisture during storage, transportation, and sales, but also maintains its cleanliness and hygiene, and ensures the integrity of the packaging seal. This is crucial for ensuring product quality, extending shelf life, and enhancing brand image. Therefore, achieving efficient, precise, and effective sealing is an indispensable key step in diaper production.

[0003] The packaging sealing process involves two actions: heat sealing and cutting. First, the packaging film is heat-sealed, then cut and separated to form individual packages. Currently, common packaging sealing equipment on the market typically uses independent drive mechanisms to control the heat sealing and cutting actions separately. This design has significant drawbacks: First, two drive mechanisms lead to a complex mechanical structure and more parts, increasing manufacturing costs and subsequent maintenance difficulty and failure rate. Second, and more critically, coordinating the timing of the two independent actions is extremely difficult. In actual operation, the start-stop and speed of the sealing and cutting mechanisms must be highly synchronized. Any slight timing error or control delay can lead to serious quality problems, such as "cutting before sealing," resulting in an unqualified bag opening, or "sealing without cutting," causing products to stick together. This not only wastes packaging materials but also directly affects production efficiency and yield. Therefore, there is an urgent need to design a packaging sealing machine. Summary of the Invention

[0004] The purpose of this invention is to provide a fully servo-controlled packaging and sealing machine that solves the problems of complex structure and difficult timing coordination caused by the heat sealing and cutting actions being controlled by different drive mechanisms in the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A fully servo-controlled packaging and sealing machine, comprising:

[0007] Covering platform;

[0008] The feeding and conveying assembly is configured to convey material toward the covering table;

[0009] The film supply assembly is configured to supply packaging film to the covering stage;

[0010] The guide, positioned directly opposite the wrapping platform, is configured to guide the folding of the packaging film to wrap the material;

[0011] A sealing and cutting assembly, located on one side of the covering platform, includes an upper sealing and cutting component, a lower sealing and cutting component, and a first power source; the first power source is configured to drive the upper sealing and cutting component and the lower sealing and cutting component to move relative to each other; one of the upper sealing and cutting component and the lower sealing and cutting component includes a mounting block, a hot pressing block, and a cutter;

[0012] The cutter is fixed to the mounting block, and the hot pressing block is connected to the mounting block through a first elastic element. The hot pressing block has a first state and a second state: in the first state, the working end face of the hot pressing block protrudes beyond the cutting edge of the cutter; in the second state, the working end face of the hot pressing block does not protrude beyond the cutting edge of the cutter.

[0013] Furthermore, it also includes a material feeding assembly positioned opposite the coating table, configured to be driven by the first power source to feed material from the feeding conveyor assembly onto the packaging film located on the coating table.

[0014] Furthermore, the mounting block is fixed on the first rotating shaft;

[0015] The other of the upper sealing and cutting components includes a second rotating shaft and a cutting block fixed on the second rotating shaft. The cutting block is provided with a groove that cooperates with the cutter.

[0016] The feeding assembly includes a third rotating shaft and a feeding block fixed on the third rotating shaft;

[0017] The coating platform is provided with a material feeding hole for the material feeding block to move;

[0018] The first power source directly or indirectly drives the first, second, and third rotating shafts to rotate simultaneously; wherein the first and second rotating shafts rotate in opposite directions, and the first, second, and third rotating shafts rotate at the same speed.

[0019] Furthermore, the sealing and cutting assembly also includes an intermediate rotating shaft connected to a first power source, a first mounting bracket for rotatably mounting the intermediate rotating shaft, and a first sliding block slidably mounted on the first mounting bracket;

[0020] The first and second rotating shafts are connected by a first gear set; the intermediate rotating shaft is connected to one of the first and second rotating shafts through a first transmission mechanism; and one of the intermediate rotating shaft, the first and second rotating shafts is connected to a third rotating shaft through a second transmission mechanism.

[0021] The driving shaft of the first rotating shaft and the second rotating shaft are rotatably mounted on the first mounting bracket, and the driven shaft of the first rotating shaft and the second rotating shaft are rotatably mounted on the first sliding block; one end of the first sliding block along its sliding direction is connected to the first mounting bracket through a second elastic element.

[0022] Furthermore, it also includes a transition platform and a side sealing assembly;

[0023] The transition platform is located between the covering platform and the sealing and cutting assembly, and the transition platform is provided with a side sealing channel extending along the material conveying direction;

[0024] The coating platform is provided with a through guide hole directly opposite the guide member. The guide hole is located on both sides of the feeding hole and is connected to the side sealing channel.

[0025] The guide member has a guide edge that slopes downward along the conveying direction and passes through the guide hole. A gap is left between the guide member and the edge of the guide hole to allow the packaging film to pass through.

[0026] The side sealing assembly is located below the side sealing channel and is configured to longitudinally seal the packaging film.

[0027] Furthermore, the side sealing assembly includes a first heat sealing shaft and a second heat sealing shaft driven to rotate by a second power source, the first heat sealing shaft and the second heat sealing shaft rotating in opposite directions.

[0028] Furthermore, the side sealing assembly also includes a second mounting bracket and a second sliding block slidably mounted on the second mounting bracket;

[0029] The first heat-sealing shaft and the second heat-sealing shaft are connected by a second gear set.

[0030] The drive shaft of the first heat-sealing shaft and the second heat-sealing shaft are rotatably mounted on the second mounting bracket, and the driven shaft of the first heat-sealing shaft and the second heat-sealing shaft are rotatably mounted on the second sliding block; one end of the second sliding block along its sliding direction is connected to the second mounting bracket through a third elastic element;

[0031] Along the conveying direction, the side sealing assembly is provided with two sets of first heat sealing shafts and second heat sealing shafts arranged in pairs.

[0032] Furthermore, hot pressing blocks are provided on both sides of the cutter;

[0033] An auxiliary pressure roller is provided on one side of the hot press block.

[0034] Furthermore, the first power source is a servo motor;

[0035] The film supply assembly includes a film winding roller and at least one guide roller.

[0036] Furthermore, it also includes material conveying components and frames;

[0037] The feeding and conveying assembly is located on the side of the sealing and cutting assembly away from the covering table;

[0038] The coating table, feeding and conveying assembly, film supply assembly, guide, sealing and cutting assembly, and unloading and conveying assembly are all mounted on the frame.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The fully servo-driven packaging sealing machine provided by this invention is connected to the mounting block through a first elastic element, realizing the automatic completion of the composite action of heat sealing followed by cutting under a single drive. Compared with the method of setting an independent drive mechanism for the cutter, this design not only greatly simplifies the mechanical structure and control system, reduces manufacturing costs and maintenance difficulty, but more importantly, it achieves seamless connection and high coordination of heat sealing and cutting actions under a single power drive, avoiding errors that may be caused by the timing coordination of multiple drives, and improving the reliability of the action and the consistency of sealing and cutting quality.

[0041] In this invention, the feeding assembly and sealing / cutting assembly are driven by the same primary power source, ensuring strict synchronization between material feeding and sealing actions. This design eliminates problems caused by asynchronous coordination of multiple power sources, simplifies the mechanical structure and control system, reduces costs, and ensures the stability of the packaging rhythm, thereby guaranteeing the accuracy of sealing and cutting. The second and third elastic elements in this invention play a crucial role in automatically compensating for gaps and maintaining constant meshing pressure in the sealing / cutting assembly and the side sealing assembly, respectively. This effectively eliminates backlash in gear transmission, ensuring the accuracy and response speed of power transmission, thus improving the overall precision, stability, and sealing effect of the sealing / cutting and side sealing actions. The side sealing assembly in this invention uses a rotating heat-sealing shaft to achieve continuous and uniform heat-sealing of the moving packaging film edges, resulting in high sealing efficiency and stable quality. The two sets of heat-sealing shafts further ensure the strength of the seal. The entire side sealing process is coordinated and continuous with the front-end sealing / cutting action, jointly achieving high-speed, high-quality automated packaging. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0044] Figure 1 This is a three-dimensional schematic diagram of the fully servo-controlled packaging and sealing machine of the present invention;

[0045] Figure 2 This is a three-dimensional schematic diagram of the fully servo-driven packaging and sealing machine of the present invention with part of the frame hidden;

[0046] Figure 3 This is a top view of the covering platform and transition platform in this invention;

[0047] Figure 4 This is a three-dimensional schematic diagram of the coating platform, transition platform, and material feeding assembly in this invention;

[0048] Figure 5 This is a three-dimensional schematic diagram of the covering platform, transition platform, and guide component in this invention;

[0049] Figure 6 This is a three-dimensional schematic diagram of the side sealing assembly in this invention;

[0050] Figure 7 This is a three-dimensional schematic diagram of the sealing and cutting assembly and the material feeding assembly in this invention;

[0051] Figure 8 This is a three-dimensional schematic diagram of the sealing and cutting component structure in this invention;

[0052] Figure 9 This is a three-dimensional schematic diagram of the upper sealing cutter and the lower sealing cutter in this invention;

[0053] Figure 10 This is a side view of the upper sealing component in this invention.

[0054] Illustrations: 1. Coating platform; 11. Feeding hole; 12. Guide hole;

[0055] 2. Material feeding and conveying components;

[0056] 3. Film supply assembly; 31. Film winding roller; 32. Guide roller;

[0057] 4. Guide component; 41. Guide edge;

[0058] 5. Sealing and cutting assembly; 51. Upper sealing and cutting component; 52. Lower sealing and cutting component; 53. First power source; 541. First rotating shaft; 542. Mounting block; 543. Hot pressing block; 544. Cutting knife; 545. Auxiliary pressure roller; 546. First elastic element; 551. Second rotating shaft; 552. Cutting support block; 56. Intermediate rotating shaft; 57. First mounting frame; 58. First sliding block; 59. Second elastic element;

[0059] 6. Feeding assembly; 61. Third rotating shaft; 62. Feeding block;

[0060] 7. Transition platform; 71. Side sealing passage;

[0061] 8. Side sealing assembly; 81. Second power source; 82. First heat sealing shaft; 83. Second heat sealing shaft; 84. Second mounting bracket; 85. Second sliding block; 86. Third elastic element;

[0062] 9. Material feeding and conveying assembly;

[0063] 10. Rack. Detailed Implementation

[0064] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0065] In the description of this invention, it should be understood that the terms "upper," "lower," "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 the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0066] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0067] This embodiment provides a fully servo-controlled packaging and sealing machine for automating the packaging, sealing, and cutting of diapers, thereby improving production efficiency and packaging quality. Combined with... Figures 1-2As shown, the fully servo-driven packaging and sealing machine includes a covering table 1, a feeding and conveying assembly 2, a film supply assembly 3, a guide 4, a sealing and cutting assembly 5, a feeding assembly 6, a transition table 7, a side sealing assembly 8, a discharge conveying assembly 9, and a frame 10. The covering table 1, feeding and conveying assembly 2, film supply assembly 3, guide 4, sealing and cutting assembly 5, transition table 7, side sealing assembly 8, and discharge conveying assembly 9 are all mounted on the frame 10. Figures 3-4 As shown, the coating station 1 serves as a workstation for coating materials with packaging film. In a specific embodiment, the material includes diapers.

[0068] The feeding and conveying assembly 2 is configured to convey the material to be packaged toward the covering table 1. In a specific embodiment, the feeding and conveying assembly 2 includes a conveyor belt; it should be noted that other mechanisms capable of achieving continuous and stable conveying functions can also be applied to this embodiment. The film supply assembly 3 is configured to provide packaging film for packaging materials to the covering table 1. In a specific embodiment, the film supply assembly 3 includes a film winding roller 31 and at least one guide roller 32; the film winding roller 31 is used to support the rolled packaging film and is releasable; the guide roller 32 is used to guide and tension the packaging film to ensure its smooth conveying. Figure 5 As shown, the guide 4 is positioned directly opposite the covering platform 1, and the guide 4 is configured to guide the folding of the packaging film to wrap the material.

[0069] The sealing and cutting component 5 is located on one side of the covering platform 1, combined with Figures 7-10As shown, the sealing and cutting assembly 5 includes an upper sealing and cutting component 51, a lower sealing and cutting component 52, and a first power source 53. The first power source 53 is configured to drive the upper sealing and cutting component 51 and the lower sealing and cutting component 52 to move relative to each other, thereby sealing and cutting the packaging film covering the material. One of the upper sealing and cutting component 51 and the lower sealing and cutting component 52 includes a mounting block 542, a hot pressing block 543, and a cutter 544. The cutter 544 is fixed to the mounting block 542, and the hot pressing block 543 is connected to the mounting block 542 via a first elastic member 546. The hot pressing block 543 has a first state and a second state: in the first state, the working end face of the hot pressing block 543 protrudes beyond the cutting edge of the cutter 544. In the second state, the working end face of the hot pressing block 543 does not protrude beyond the cutting edge of the cutter 544. Further, in its natural state, the hot pressing block 543 is in the first state under the action of the first elastic member 546. Under pressure, the hot-pressing block 543 can overcome the elastic force of the first elastic element 546 and move until its working end face does not protrude beyond the cutting edge of the cutter 544, at which point it is in the second state. This structural design allows the hot-pressing block 543 to contact and heat-seal the packaging film first during the sealing and cutting process, followed by the cutter 544 cutting. This achieves integrated and sequential control of the sealing and cutting actions, eliminating the need for a separate telescopic drive mechanism for the cutter 544. This simplifies the mechanical structure and avoids the problems of stricter control timing requirements and difficulties in synchronous coordination between different drive sources caused by adding an independent telescopic drive mechanism for the cutter 544 (such as a cylinder or linear motor), thus improving the reliability and coordination of the action. In a specific embodiment, the first elastic element 546 is a spring or a rubber pad. The mounting block 542 is fixed on the first rotating shaft 541. The other of the upper sealing and cutting component 51 and the lower sealing and cutting component 52 includes a second rotating shaft 551 and a cutting block 552 fixed on the second rotating shaft 551. The cutting block 552 has a groove that mates with the cutter 544 to accommodate the cutter 544 during sealing and cutting to ensure precise cutting. In a specific embodiment, heat-pressing blocks 543 are provided on both sides of the cutter 544 to heat-seal both sides of the packaging film before cutting, thereby enhancing the sealing strength. An auxiliary pressure roller 545 is provided on one side of the heat-pressing block 543. Further, the auxiliary pressure roller 545 is located on the side of the heat-pressing block 543 that first contacts the packaging film, and is used to pre-flatten the packaging film to prevent wrinkles from forming during heat sealing. In a specific embodiment, the first power source 53 is a servo motor, which can provide precise motion control to ensure the synchronicity and repeatability of the sealing and cutting action.

[0070] In a specific embodiment, the sealing and cutting assembly 5 further includes an intermediate rotating shaft 56 connected to a first power source 53, a first mounting bracket 57 for rotatably mounting the intermediate rotating shaft 56, and a first sliding block 58 slidably mounted on the first mounting bracket 57. The first rotating shaft 541 and the second rotating shaft 551 are connected by a first gear set to achieve synchronous counter-rotation of the upper sealing and cutting member 51 and the lower sealing and cutting member 52. The intermediate rotating shaft 56 is connected to one of the first rotating shaft 541 and the second rotating shaft 551 through a first transmission mechanism, and one of the intermediate rotating shaft 56, the first rotating shaft 541, and the second rotating shaft 551 is connected to a third rotating shaft 61 through a second transmission mechanism. The driving shaft of the first rotating shaft 541 and the second rotating shaft 551 is rotatably mounted on the first mounting bracket 57, and the driven shaft of the first rotating shaft 541 and the second rotating shaft 551 is rotatably mounted on the first sliding block 58. It should be noted that the driving shafts of the first rotating shaft 541 and the second rotating shaft 551 are shafts connected to the intermediate rotating shaft 56, and the driven shafts of the first rotating shaft 541 and the second rotating shaft 551 are shafts driven by the driving shaft through the first gear set. It should also be noted that the first rotating shaft 541 and the second rotating shaft 551 rotate in opposite directions, driving the heat-pressing block 543 and the cutter 544 to perform periodic sealing and cutting; furthermore, the opposite rotation of the first rotating shaft 541 and the second rotating shaft 551 also provides forward traction when contacting the packaging film, assisting in conveying the packaging bag forward, thus combining sealing and cutting with conveying functions. One end of the first sliding block 58 along its sliding direction is connected to the first mounting bracket 57 through a second elastic element 59. The second elastic element 59 ensures that the first gear set is tightly meshed during transmission, eliminating gaps that may occur when heat-sealing the packaging film, thereby improving the transmission accuracy and stability of the sealing and cutting action, as well as the heat-sealing effect. In a specific embodiment, the second elastic element 59 is a spring or a rubber pad. In a specific embodiment, both the first transmission mechanism and the second transmission mechanism are chain drive mechanisms. Further, the output end of the first power source 53 is directly or indirectly connected to the intermediate rotating shaft 56; the intermediate rotating shaft 56 is connected to the second rotating shaft 551 via a first transmission mechanism, and the second rotating shaft 551 is connected to the first rotating shaft 541 via a first gear set; in this case, of the first rotating shaft 541 and the second rotating shaft 551, the second rotating shaft 551 is the driving shaft, and the first rotating shaft 541 is the driven shaft.

[0071] In specific implementation, the first power source 53 drives the intermediate rotating shaft 56 to rotate, which in turn drives the second rotating shaft 551 to rotate via the first transmission mechanism. Then, the first gear set drives the first rotating shaft 541 and the second rotating shaft 551 to rotate synchronously in opposite directions, driving the hot pressing block 543 and the cutter 544 to rotate and work. When the hot pressing block 543 and the cutter 544 contact the packaging film in sequence, the hot pressing block 543 first contacts the packaging film to perform heat sealing, and then the cutter 544 performs cutting to complete the sealing and separation, thereby improving packaging efficiency and quality.

[0072] The feeding assembly 6 is positioned directly opposite the coating platform 1, combined with... Figure 4 and Figure 7 As shown, the feeding component 6 is configured to be driven by the first power source 53 to feed the material from the feeding conveying component 2 onto the packaging film located on the covering platform 1. Both the feeding component 6 and the sealing and cutting component 5 are driven by the first power source 53, ensuring that their actions are synchronized with the actions of the sealing and cutting component 5, thus coordinating material feeding and sealing / cutting. Specifically, the interval at which the feeding conveying component 2 feeds the material may not be completely uniform, while the feeding component 6, as a forced pushing mechanism, can accurately feed the material onto the packaging film at a fixed cycle and rhythm. This feeding rhythm is completely consistent with the sealing and cutting frequency of the sealing and cutting component 5, thereby ensuring accurate packaging and sealing / cutting positions and avoiding irregular packaging caused by uneven feeding. In a specific embodiment, the feeding component 6 includes a third rotating shaft 61 and a feeding block 62 fixed on the third rotating shaft 61. The covering platform 1 is provided with feeding holes 11 for the feeding block 62 to move, allowing the feeding block 62 to move and push the diaper onto the packaging film. The first power source 53 directly or indirectly drives the first rotating shaft 541, the second rotating shaft 551, and the third rotating shaft 61 to rotate simultaneously. The first rotating shaft 541 and the second rotating shaft 551 rotate in opposite directions, while the first rotating shaft 541, the second rotating shaft 551, and the third rotating shaft 61 rotate at the same speed. This ensures that the pushing action of the feeding block 62 and the opening and closing action of the sealing and cutting component are strictly matched in time, improving the continuity and production efficiency of the entire packaging process and guaranteeing the consistency of the packaged products. Furthermore, the intermediate rotating shaft 56 is connected to the third rotating shaft 61 via a second transmission mechanism.

[0073] In specific implementation, the first power source 53 drives the intermediate rotating shaft 56 to rotate, which in turn drives the third rotating shaft 61 to rotate via the second transmission mechanism, thereby driving the material feeding block 62 to rotate. The material feeding block 62 passes through the material feeding hole 11 and feeds the diapers on the feeding conveying component 2 onto the packaging film on the wrapping table 1, so that the packaging film can package the diapers. Moreover, the action of the material feeding component 6 is synchronized with the action of the sealing and cutting component 5, thereby ensuring that each material can be accurately pushed to the predetermined position before the sealing and cutting action begins, realizing fully automatic and precise sealing and cutting.

[0074] The transition platform 7 is located between the covering platform 1 and the sealing and cutting assembly 5. The transition platform 7 has a side sealing channel 71 extending along the material conveying direction. The covering platform 1 has a through guide hole 12 directly opposite the guide member 4. The guide hole 12 is located on both sides of the feeding hole 11 and communicates with the side sealing channel 71, allowing the two side edges of the packaging film, after being folded by the guide member 4, to pass through, ensuring that the two sides of the packaging film are below the side sealing channel 71. The guide member 4 has a guide edge 41 that slopes downwards along the conveying direction and passes through the guide hole 12, guiding the packaging film below the guide hole 12. A gap is left between the guide member 4 and the edge of the guide hole 12 to allow the packaging film to pass through. The side sealing assembly 8 is located below the side sealing channel 71 and is configured to longitudinally seal the packaging film after it has been folded by the guide member 4 and whose two side edges extend below the side sealing channel 71.

[0075] In a specific embodiment, combined with Figure 6As shown, the side sealing assembly 8 includes a first heat-sealing shaft 82 and a second heat-sealing shaft 83 driven to rotate by a second power source 81, with the first heat-sealing shaft 82 and the second heat-sealing shaft 83 rotating in opposite directions. Further, the side sealing assembly 8 also includes a second mounting bracket 84 and a second sliding block 85 slidably mounted on the second mounting bracket 84. The first heat-sealing shaft 82 and the second heat-sealing shaft 83 are connected by a second gear set. The drive shaft of the first heat-sealing shaft 82 and the second heat-sealing shaft 83 is rotatably mounted on the second mounting bracket 84, and the driven shaft of the first heat-sealing shaft 82 and the second heat-sealing shaft 83 is rotatably mounted on the second sliding block 85. It should be noted that the drive shaft of the first heat-sealing shaft 82 and the second heat-sealing shaft 83 is a heat-sealing shaft connected to the output end of the second power source 81; the driven shaft of the first heat-sealing shaft 82 and the second heat-sealing shaft 83 is a heat-sealing shaft driven by the drive shaft through the second gear set. Furthermore, the second power source 81 is connected to the first heat-sealing shaft 82 via a third transmission mechanism, and the first heat-sealing shaft 82 is connected to the second heat-sealing shaft 83 via a second gear set; that is, in the first heat-sealing shaft 82 and the second heat-sealing shaft 83, the first heat-sealing shaft 82 is the driving shaft, and the second heat-sealing shaft 83 is the driven shaft. In a specific embodiment, the third transmission mechanism is a gear transmission mechanism; it should be noted that any transmission mechanism capable of transmitting the rotational power of the second power source 81 to the first heat-sealing shaft 82 can be used in this embodiment. It should also be noted that the first heat-sealing shaft 82 and the second heat-sealing shaft 83 are provided with heat-sealing discs for heat-sealing the packaging film. One end of the second sliding block 85 along its sliding direction is connected to the second mounting bracket 84 via a third elastic element 86. The third elastic element 86 provides continuous elastic clamping force to the second sliding block 85 and the driven heat-sealing shaft. This not only allows the heat-sealing pressure to adapt to changes in the thickness of the packaging film, but more importantly, it eliminates the transmission gap between the gear meshing pairs and maintains close contact between the gears, thereby significantly improving the transmission accuracy and operational stability of the side sealing assembly 8 and ensuring uniform heat-sealing quality. Along the conveying direction, the side sealing assembly 8 is sequentially provided with two sets of first heat-sealing shafts 82 and second heat-sealing shafts 83, respectively arranged in pairs. The third elastic element 86 provides continuous elastic clamping force to the second sliding block 85 and the driven heat-sealing shaft mounted thereon, enabling it to adapt to changes in the thickness of the packaging film and ensuring uniform and constant heat-sealing pressure. Simultaneously, the elastic connection helps buffer minor fluctuations in gear transmission, improving the smoothness of transmission and sealing accuracy. In a specific embodiment, the third elastic element 86 is a spring or a rubber pad. In a specific embodiment, the second power source 81 is a servo motor, which can precisely control the rotation speed and phase of the heat sealing shaft to achieve stable and continuous side sealing operation.

[0076] In practice, while the front end of the packaging bag is sealed and cut apart by the sealing and cutting component 5, its tail end is still being pulled forward. During this process, the guide 4 folds the two sides of the packaging film upward through its inclined guide edge 41. The folded edges pass through the guide hole 12 and hang down below the side sealing channel 71. The rotating first heat sealing shaft 82 and the second heat sealing shaft 83 clamp and heat-press the edges of the two layers of film, and complete the continuous longitudinal sealing as the packaging bag moves.

[0077] The feeding and conveying assembly 9 is located on the side of the sealing and cutting assembly 5 away from the covering table 1. In a specific embodiment, the feeding and conveying assembly 9 includes a conveyor belt; it should be noted that other mechanisms capable of achieving continuous and stable conveying functions can also be applied to this embodiment.

[0078] The fully servo packaging sealing machine provided in this embodiment connects the heat-pressing block 543 to the mounting block 542 via the first elastic element 546, realizing the automatic completion of the composite action of heat sealing followed by cutting under a single drive. Compared with the method of setting an independent drive mechanism for the cutter 544, this design not only greatly simplifies the mechanical structure and control system, reduces manufacturing costs and maintenance difficulty, but more importantly, it achieves seamless connection and high coordination of heat sealing and cutting actions under a single power drive, avoiding errors that may be caused by multi-drive timing coordination, and improving the reliability of the action and the consistency of sealing and cutting quality.

[0079] In this embodiment, the feeding assembly 6 and the sealing and cutting assembly 5 are driven by the same first power source 53, ensuring strict synchronization between material feeding and sealing actions. This design eliminates problems that may arise from asynchronous coordination of multiple power sources, simplifies the mechanical structure and control system, reduces costs, and ensures the stability of the packaging rhythm, thereby guaranteeing the accuracy of sealing and cutting. In this embodiment, the second elastic element 59 and the third elastic element 86 play a crucial role in automatically compensating for gaps and maintaining constant meshing pressure in the sealing and cutting assembly 5 and the side sealing assembly 8, respectively. This effectively eliminates backlash in gear transmission, ensuring the accuracy and response speed of power transmission, thereby improving the overall accuracy, stability, and sealing effect of the sealing and cutting and side sealing actions. In this embodiment, the side sealing assembly 8 uses a rotating heat-sealing shaft to achieve continuous and uniform heat-sealing of the moving packaging film edge, resulting in high sealing efficiency and stable quality. The two sets of heat-sealing shafts further ensure the firmness of the seal. The entire side sealing process is coordinated and continuous with the front-end sealing and cutting action, jointly achieving high-speed, high-quality automated packaging.

[0080] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully servo-controlled packaging and sealing machine, characterized in that: include: Covering platform (1); The feeding conveyor assembly (2) is configured to convey material toward the covering table (1); The film supply assembly (3) is configured to supply packaging film to the covering stage (1); The guide (4), positioned opposite the covering platform (1), is configured to guide the folding of the packaging film to wrap the material; The sealing and cutting assembly (5), located on one side of the covering platform (1), includes an upper sealing and cutting component (51), a lower sealing and cutting component (52), and a first power source (53); the first power source (53) is configured to drive the upper sealing and cutting component (51) and the lower sealing and cutting component (52) to move relative to each other; one of the upper sealing and cutting component (51) and the lower sealing and cutting component (52) includes a mounting block (542), a hot pressing block (543), and a cutter (544); The cutter (544) is fixed to the mounting block (542), and the hot pressing block (543) is connected to the mounting block (542) through a first elastic element (546). The hot pressing block (543) has a first state and a second state: in the first state, the working end face of the hot pressing block (543) protrudes from the cutting edge of the cutter (544); in the second state, the working end face of the hot pressing block (543) does not protrude from the cutting edge of the cutter (544). It also includes a material feeding assembly (6) positioned opposite the covering table (1), configured to be driven by the first power source (53) to feed material from the feeding conveyor assembly (2) onto the packaging film located on the covering table (1); The mounting block (542) is fixed on the first rotating shaft (541); The other of the upper sealing cutter (51) and the lower sealing cutter (52) includes a second rotating shaft (551) and a cutting block (552) fixed on the second rotating shaft (551). The cutting block (552) is provided with a groove that cooperates with the cutter (544). The feeding assembly (6) includes a third rotating shaft (61) and a feeding block (62) fixed on the third rotating shaft (61). The coating platform (1) is provided with a material feeding hole (11) for the material feeding block (62) to move. The first power source (53) directly or indirectly drives the first rotating shaft (541), the second rotating shaft (551) and the third rotating shaft (61) to rotate simultaneously; wherein the first rotating shaft (541) and the second rotating shaft (551) rotate in opposite directions, and the first rotating shaft (541), the second rotating shaft (551) and the third rotating shaft (61) rotate at the same speed; It also includes a transition platform (7) and a side sealing assembly (8); The transition platform (7) is located between the covering platform (1) and the sealing and cutting assembly (5), and the transition platform (7) is provided with a side sealing channel (71) extending along the material conveying direction. The covering platform (1) is provided with a through guide hole (12) directly opposite the guide member (4). The guide hole (12) is located on both sides of the feeding hole (11) and is connected to the side sealing channel (71). The guide (4) is provided with a guide edge (41) that is inclined downward along the conveying direction and passes through the guide hole (12). A gap is left between the guide (4) and the edge of the guide hole (12) to allow the packaging film to pass through. The side sealing assembly (8) is located below the side sealing channel (71) and is configured to longitudinally seal the packaging film.

2. The fully servo-controlled packaging and sealing machine according to claim 1, characterized in that: The sealing and cutting assembly (5) further includes an intermediate rotating shaft (56) connected to a first power source (53), a first mounting bracket (57) for rotatably mounting the intermediate rotating shaft (56), and a first sliding block (58) slidably mounted on the first mounting bracket (57). The first rotating shaft (541) and the second rotating shaft (551) are connected by a first gear set; the intermediate rotating shaft (56) is connected to one of the first rotating shaft (541) and the second rotating shaft (551) through a first transmission mechanism; and one of the intermediate rotating shaft (56), the first rotating shaft (541), and the second rotating shaft (551) is connected to the third rotating shaft (61) through a second transmission mechanism. The drive shafts of the first rotating shaft (541) and the second rotating shaft (551) are rotatably mounted on the first mounting bracket (57), and the driven shafts of the first rotating shaft (541) and the second rotating shaft (551) are rotatably mounted on the first sliding block (58); one end of the first sliding block (58) along its sliding direction is connected to the first mounting bracket (57) through the second elastic element (59).

3. The fully servo-controlled packaging and sealing machine according to claim 1, characterized in that: The side sealing assembly (8) includes a first heat sealing shaft (82) and a second heat sealing shaft (83) driven to rotate by a second power source (81), the first heat sealing shaft (82) and the second heat sealing shaft (83) rotating in opposite directions.

4. The fully servo-controlled packaging and sealing machine according to claim 3, characterized in that: The side sealing assembly (8) also includes a second mounting bracket (84) and a second sliding block (85) slidably mounted on the second mounting bracket (84). The first heat-sealing shaft (82) and the second heat-sealing shaft (83) are connected by a second gear set. The drive shafts of the first heat-sealing shaft (82) and the second heat-sealing shaft (83) are rotatably mounted on the second mounting bracket (84), and the driven shafts of the first heat-sealing shaft (82) and the second heat-sealing shaft (83) are rotatably mounted on the second sliding block (85); one end of the second sliding block (85) along its sliding direction is connected to the second mounting bracket (84) through a third elastic element (86); Along the conveying direction, the side sealing assembly (8) is provided with two sets of first heat sealing shafts (82) and second heat sealing shafts (83) arranged in pairs.

5. The fully servo-controlled packaging and sealing machine according to claim 1, characterized in that: Hot pressing blocks (543) are provided on both sides of the cutter (544); An auxiliary pressure roller (545) is provided on one side of the hot press block (543).

6. The fully servo-controlled packaging and sealing machine according to claim 1, characterized in that: The first power source (53) is a servo motor; The film supply assembly (3) includes a film winding roller (31) and at least one guide roller (32).

7. The fully servo-controlled packaging and sealing machine according to claim 1, characterized in that: It also includes a material conveying assembly (9) and a frame (10); The feeding and conveying assembly (9) is located on the sealing and cutting assembly (5) on the side away from the covering platform (1); The coating platform (1), feeding conveyor assembly (2), film supply assembly (3), guide (4), sealing and cutting assembly (5), and unloading conveyor assembly (9) are all installed on the frame (10).

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