Sealing device and three-side sealing packaging machine using the same

Abstract

The utility model discloses a kind of sealing device and the three-edge sealing packaging machine using the sealing device, it is related to packaging machinery technical field.The sealing device of the utility model integrates existing longitudinal sealing roller mechanism, hot transverse sealing roller mechanism and cold transverse sealing roller mechanism together, form a component sealing device, so that three-edge sealing packaging machine frame and other components assembly, the assembly of component sealing device can be carried out simultaneously, then it is integrally assembled on the frame of three-edge sealing packaging machine, to solve the problem of low overall assembly efficiency of existing three-edge sealing packaging machine.The three-edge sealing packaging machine of the utility model using the sealing device, one side vertical plate of sealing device is assembled on the column of frame, the other side vertical plate is assembled on another column of frame, so that the back of sealing device is not blocked, it is convenient to clean, to solve the problem of longitudinal sealing roller device, transverse sealing roller device and cold sealing roller device of existing three-edge sealing packaging machine difficult to clean.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and more specifically to a sealing device for multi-side sealing and a three-side sealing packaging machine using the sealing device. Background Technology

[0002] Existing multi-side seal packaging bags can be roughly divided into back seal, three-side seal, and four-side seal. Among them, the longitudinal seal of the back seal packaging bag is located in the middle of the back of the packaging bag. Back seal packaging bags generally require a bag forming machine to assist in the forming of the packaging film strip. The three-side seal packaging bag is formed by folding the packaging film strip in the middle, sealing the longitudinal opening after the fold, and then sealing the top and bottom openings. Its longitudinal seal is located on one side of the packaging bag. The four-side seal packaging bag generally requires two sets of packaging film strips to be overlapped together, the two sides to be longitudinally sealed, and then the top and bottom sides to be sealed.

[0003] Currently, three-side sealing packaging machines are widely used for packaging granules, powders, and liquids. A three-side sealing packaging machine includes a film feeding mechanism (for feeding and outputting the packaging film roll), a film folding mechanism (for folding the packaging film strip output from the feeding device), a longitudinal sealing roller assembly (using a pair of longitudinal sealing rollers to longitudinally seal the longitudinal opening of the folded packaging film to form a packaging film strip bag), a hot transverse sealing roller assembly (using a pair of heated transverse sealing rollers to heat and seal the packaging film strip bag after longitudinal sealing from both top and bottom), a cold transverse sealing roller assembly (using a pair of cold transverse sealing rollers to pressurize and seal the transverse sealing position of the packaging film strip bag to ensure sealing effect and airtightness), and a cutting mechanism to cut the packaging film strip bag into individual packaging bags, cutting or making perforated lines at the transverse sealing position between adjacent packaging bags. The machine is then paired with a corresponding filling mechanism depending on the product to be packaged (e.g., powder, granules, liquid).

[0004] For example, the invention patent with authorization announcement number CN112918804B, authorization announcement date November 22, 2024, and titled "A Double-Row Three-Side Sealing Vertical Packaging Machine," includes a frame. Left and right forming devices are arranged on the upper part of the front substrate in front of the frame. Between the left and right vertical plates below the left and right forming devices, a longitudinal sealing roller device, an exhaust device, a transverse sealing roller device, and a cold sealing roller device are arranged sequentially from top to bottom. Left and right cutting devices are respectively arranged on the left and right sides in front of the front substrate. The device has left and right discharge cutters located directly below it. Between the left and right frame plates on the left and right sides of the horizontal base plate on the upper part of the frame, a color mark detection and adjustment device, a film feeding roller device, and a slitting device are arranged sequentially from back to front. A film guiding and adjusting device is located on the upper front part of the left and right frame plates, and left and right forming guide rollers are located on the lower front part. This invention cuts the film into left and right halves, and then guides and adjusts them, bends and shapes them, seals them longitudinally and laterally, and cuts them to finally form a double-row three-side-seal packaging bag. It has a compact structure and reliable performance.

[0005] In the existing three-side sealing packaging machine, the longitudinal sealing roller assembly, transverse sealing roller assembly, and cold sealing roller assembly are all assembled sequentially, and it is necessary to ensure that the longitudinal sealing roller assembly, transverse sealing roller assembly, and cold sealing roller assembly are aligned longitudinally, resulting in low overall assembly efficiency. After assembly, the inner sides of the longitudinal sealing roller assembly, transverse sealing roller assembly, and cold sealing roller assembly are blocked by the packaging machine's base plate, making it inconvenient to clean them. Utility Model Content

[0006] To overcome the defects and shortcomings of the existing technology, this utility model provides a sealing device and a three-side sealing packaging machine using the sealing device. The sealing device of this utility model integrates the existing longitudinal sealing roller mechanism, hot transverse sealing roller mechanism, and cold transverse sealing roller mechanism into a single modular sealing device. This allows the modular sealing device to be assembled simultaneously with the frame and other components of the three-side sealing packaging machine during assembly, and then the entire device is assembled onto the frame, thus solving the problem of low overall assembly efficiency in existing three-side sealing packaging machines. In this utility model, the three-side sealing packaging machine using this sealing device mounts one side plate of the sealing device onto one column of the frame and the other side plate onto another column of the frame, ensuring that the back of the sealing device is not blocked, facilitating hygiene and cleaning, and solving the problem of difficult hygiene and cleaning of the longitudinal sealing roller mechanism, transverse sealing roller mechanism, and cold sealing roller mechanism in existing three-side sealing packaging machines.

[0007] To address the problems existing in the prior art, the present invention is achieved through the following technical solution.

[0008] The first aspect of this utility model provides a sealing device, including a first mounting plate and a second mounting plate. The first mounting plate and the second mounting plate are arranged in parallel and spaced apart, and are connected together by a plurality of fixed connecting rods between the first mounting plate and the second mounting plate. The first mounting plate and the second mounting plate are provided with corresponding first mounting openings for mounting a longitudinal sealing roller mechanism, second mounting openings for mounting a hot transverse sealing roller mechanism, and third mounting openings for mounting a cold transverse sealing roller mechanism, from top to bottom. Each mounting opening of the first mounting opening, the second mounting opening, and the third mounting opening is equipped with a stop bar, and an adjusting screw for adjusting the roller spacing is threaded onto the stop bar.

[0009] More preferably, the longitudinal sealing roller mechanism includes an active longitudinal sealing roller and a driven longitudinal sealing roller, which are driven by a first gear and a second gear meshing; a first motor mounting seat is mounted on the outer side of the second mounting plate, and the longitudinal sealing drive motor of the longitudinal sealing roller mechanism is mounted on the first motor mounting seat; the first motor mounting seat includes a plurality of connecting support columns and a first motor mounting plate, which is arranged parallel to the second mounting plate by the plurality of connecting support columns; a first shaft seat is provided on the outer side of the second mounting plate, and the first shaft seat is located inside the first motor mounting seat; a first transmission shaft is rotatably mounted on the first shaft seat, and a first transmission gear is provided on the first transmission shaft, which meshes with the first gear; the output shaft of the longitudinal sealing drive motor is connected to the first transmission shaft by a coupling.

[0010] More preferably, a second bearing seat is provided on the outer side of the second mounting plate, and a second drive shaft is rotatably mounted on the second bearing seat. One end of the second drive shaft is connected to the active longitudinal sealing roller through a bevel gear set, and the other end of the second drive shaft passes through the second bearing seat.

[0011] More preferably, the second bearing is provided with a first support frame for auxiliary support of the heating assembly of the longitudinal sealing roller mechanism.

[0012] Further preferably, a second motor mounting base is assembled on the outside of the second mounting plate. The second motor mounting base includes a second motor mounting plate and several connecting support columns. The second motor mounting plate is arranged parallel to the second mounting plate through the several connecting support columns. The second motor mounting plate is used to assemble the heat sealing drive motor of the heat sealing roller mechanism. A third shaft seat is provided on the outside of the second mounting plate. The third shaft seat is located inside the second motor seat. A third transmission shaft is rotatably mounted on the third shaft seat. A third transmission gear is provided on the third transmission shaft. The third transmission gear meshes with the driving gear of the heat sealing roller mechanism. The output shaft of the heat sealing drive motor is connected to the third transmission shaft through a coupling.

[0013] More preferably, the cold horizontal sealing drive motor of the cold horizontal sealing roller mechanism is mounted on the second motor mounting plate; a fourth shaft seat is provided on the outside of the second mounting plate, the fourth shaft seat is located inside the second motor seat, a fourth transmission shaft is rotatably mounted on the fourth shaft seat, a fourth transmission gear is provided on the fourth transmission shaft, the fourth transmission gear meshes with the drive gear of the cold horizontal sealing roller mechanism, and the output shaft of the cold horizontal sealing drive motor is connected to the fourth transmission shaft through a coupling.

[0014] More preferably, the bottom of the sealing device is provided with a packaging bag guide, which is assembled to the bottom of the first mounting plate or the second mounting plate via a connecting bracket.

[0015] The second aspect of this utility model provides a three-side sealing packaging machine using the sealing device described in the first aspect. The three-side sealing packaging machine includes a base, a first column, a second column, a third column, a fourth column, and a fifth column. The first column, the second column, the third column, and the fourth column form the frame of the electrical box. The fifth column is arranged parallel to the second column at intervals. The first mounting plate of the sealing device is mounted on the fifth column, and the second mounting plate is mounted on the second column.

[0016] In a further preferred embodiment, electrical box panels and intermediate reinforcing beams are provided between the first and second columns, between the second and third columns, and between the third and fourth columns; an openable and closable electrical box door is provided between the fourth column and the first column; the tops of the first, second, third, and fourth columns are connected sequentially by four top reinforcing beams to form a rectangular reinforcing frame; an installation platform is provided at the top of the fifth column, and the reinforcing support frame inside the installation platform supports the top of the fifth column, and the reinforcing support frame is fixedly connected to the first column, the second column, and the intermediate reinforcing beam between the first and second columns.

[0017] More preferably, the top reinforcing beam and the middle reinforcing beam between the second and third columns form the installation position for the film feeding roller device of the three-side sealing packaging machine.

[0018] Compared with the prior art, the beneficial technical effects of this utility model are as follows: 1. This utility model sealing device integrates longitudinal sealing, hot transverse sealing, and cold transverse sealing roller mechanisms, which can improve assembly efficiency and simplify the assembly process: —Improving assembly efficiency: The longitudinal sealing, hot transverse sealing, and cold transverse sealing roller mechanisms, which originally needed to be assembled sequentially, are integrated into a single modular sealing device. The sealing device can be assembled simultaneously with other components such as the packaging machine frame, and finally installed onto the frame as a whole, which greatly shortens the overall assembly time and solves the problem of low assembly efficiency of existing equipment. —Simplified assembly process: There is no need to repeatedly adjust the longitudinal alignment of the three independent mechanisms during the assembly process. The integrated design ensures that the three are accurately positioned at the factory. On-site, only overall installation needs to be completed, which reduces the assembly difficulty and the technical requirements for operators.

[0019] 2. The specific sealing device structure and the specific three-side sealing machine frame structure of this utility model, namely, the first and second mounting plates of the sealing device are connected to the frame column to form an open back structure, ensuring thorough cleaning: —Achieving an open back structure: The first mounting plate of the sealing device is mounted on the fifth column of the frame, and the second mounting plate is mounted on the second column, so that the back of the sealing device is not blocked, forming an open space, which provides operating space for subsequent hygiene cleaning and solves the problem of cleaning difficulties caused by the inner side being blocked by the substrate in existing equipment. —Ensuring thorough cleaning: The open back allows operators to directly access the inside and gaps of the longitudinal sealing, hot transverse sealing, and cold transverse sealing roller mechanisms, enabling more comprehensive removal of residual materials and preventing material contamination or equipment malfunctions caused by incomplete cleaning.

[0020] 3. In this utility model, the longitudinal sealing roller mechanism adopts a direct-drive power transmission, that is, the longitudinal sealing drive motor is directly connected to the first transmission shaft through a coupling, which can improve transmission stability and facilitate independent maintenance. —Improved transmission stability: Direct drive reduces intermediate transmission links (such as belts, chains, etc.), reduces power loss and transmission error, makes the speed of the longitudinal sealing roller more stable, and ensures the sealing performance and consistency of longitudinal sealing. —Easy to maintain independently: The power transmission part is separated from the electrical box, forming an independent transmission unit. During subsequent maintenance, there is no need to disassemble the electrical box components. The longitudinal sealing drive motor, transmission shaft and other transmission components can be inspected or replaced separately, reducing maintenance time and costs.

[0021] 4. This utility model is equipped with a second drive shaft, which is connected to the active longitudinal sealing roller of the longitudinal sealing roller mechanism via a bevel gear set. The second drive shaft is used to transmit power, transferring the power of the longitudinal sealing roller mechanism to the film feeding roller device, thereby achieving synchronization between the film feeding of the film feeding roller device and the film pulling of the longitudinal sealing roller mechanism. Both use the same power source, which saves equipment costs on the one hand, and ensures the synchronization between film feeding and longitudinal sealing film pulling on the other hand, avoiding the stretching and deformation of the packaging film due to asynchrony between the two.

[0022] 5. This utility model provides a first support frame on the second shaft seat. The first support frame on the second shaft seat can assist in supporting the heating component of the longitudinal sealing roller mechanism, reducing the displacement of the heating component due to its own weight or vibration, ensuring uniform heating of the longitudinal sealing roller, and improving the sealing quality. At the same time, a second support frame is provided on the second mounting plate, which assists in supporting the heating component of the hot transverse sealing roller mechanism, achieving the same technical effect.

[0023] 6. This utility model integrates the power transmission of the hot horizontal sealing and cold horizontal sealing roller mechanism into the second motor mounting base; —Achieving independent power transmission: The drive motors for both hot and cold horizontal sealing are mounted on the second motor mounting base and directly connected to the corresponding transmission shafts via couplings, so that the power transmission of the two horizontal sealing mechanisms is completely separated from the electrical box, forming a transmission module independent of the electrical system, which facilitates separate maintenance and troubleshooting. —Simplified power layout: The transmission components of the two horizontal sealing mechanisms are concentrated in the same motor mounting area, which is compact and reduces the space occupied inside the equipment. At the same time, it makes it easier for operators to quickly identify and distinguish different transmission units, thus improving maintenance efficiency.

[0024] 7. The sealing device of this utility model is equipped with a packaging bag guide at the bottom to ensure the stability of the packaging bag conveying. The guide can accurately guide the sealed packaging film strip bag, preventing it from shifting or wrinkling during conveying. This ensures that the subsequent cutting mechanism can accurately cut or cut the dotted line at the horizontal sealing position of adjacent packaging bags, improving the product qualification rate. It can also reduce conveying resistance. The guide's smooth structural design reduces friction between the packaging bag and the equipment, avoiding damage or surface scratches to the packaging bag caused by friction, and ensuring the appearance quality of the finished packaged product.

[0025] 8. This utility model's three-side sealing packaging machine adopts a semi-open frame structure. The electrical box frame formed by the first to fourth columns is completely separated from the sealing device and other moving parts. This allows for independent inspection and dust protection of the electrical box, as well as independent lubrication and cleaning of the moving parts, avoiding mutual interference during maintenance and reducing maintenance difficulty. In the event of material leakage during packaging or cleaning, the open frame structure allows the material to fall directly to the outside of the equipment or an easily cleanable area, eliminating the need to disassemble complex parts and reducing the risk of equipment contamination and malfunction due to residual material. The separation of the electrical box from the moving parts prevents vibration and oil contamination from affecting electrical components, and also reduces the safety risk of operators coming into contact with the electrical system while maintaining moving parts. The overall frame structure of the three-side sealing packaging machine is simple and stable, reducing equipment costs and minimizing equipment size.

[0026] 9. In the three-side sealing packaging machine of this utility model, the top and middle reinforcing beams between the second and third columns form the installation position of the film feeding roller device, which optimizes the spatial layout and enhances the structural stability. —Optimize spatial layout: Utilize the existing reinforcing beams of the frame to form the installation position, eliminating the need for additional support structures, saving internal space, and making the positions of the film feeding roller device and sealing device more compatible, ensuring a smooth conveying path for the packaging film strip and reducing tension fluctuations during the conveying process; —Enhancing structural stability: The mounting position relies on the reinforcing beam structure of the frame, which can provide stable support for the film feeding roller device, avoid the packaging film shifting due to device shaking during film feeding, and ensure the accuracy of subsequent film folding and sealing processes. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the sealing device of this utility model; Figure 2 This is a schematic diagram of the main structure of the sealing device of this utility model; Figure 3 This is a cross-sectional view of the first mounting plate in the sealing device of this utility model. Figure 2 Cross-sectional view along the AA direction; Figure 4 This is a cross-sectional view of the second mounting plate in the sealing device of this utility model. Figure 2 Cross-sectional view along the BB direction; Figure 5 This is a cross-sectional view of the second mounting plate in the sealing device of this utility model. Figure 2 Cross-sectional view along the C-axis; Figure 6 This is a left view of the sealing device of this utility model; Figure 7 This is a right view of the sealing device of this utility model; Figure 8 for Figure 7 DD section view in the middle; Figure 9 This is a top view of the sealing device of this utility model; Figure 10 This is a three-dimensional structural diagram of the three-side sealing packaging machine of this utility model; Figure 11 This is a schematic diagram of the frame structure of the three-side sealing packaging machine of this utility model; Figure 12 This is a schematic diagram of the main structure of the three-side sealing packaging machine of this utility model; Figure 13 This is a schematic diagram of the left side structure of the three-side sealing packaging machine of this utility model; Figure 14 This is a rear view structural diagram of the three-side sealing packaging machine of this utility model; Reference numerals: 1. First mounting plate; 2. Second mounting plate; 3. Fixed connecting rod; 4. Longitudinal sealing roller mechanism; 5. First mounting port; 6. Hot transverse sealing roller mechanism; 7. Second mounting port; 8. Cold transverse sealing roller mechanism; 9. Third mounting port; 10. Stop bar; 11. Adjusting screw; 12. Active longitudinal sealing roller; 13. Driven longitudinal sealing roller; 14. First gear; 15. Second gear; 16. First motor mounting base; 17. Longitudinal sealing drive motor; 18. Connecting support column; 19. First motor mounting plate; 20. First shaft seat; 21. First transmission shaft; 22. First transmission gear; 23. Coupling; 24. Second shaft seat; 25. Second transmission shaft; 26. Bevel gear set; 27. First support frame; 28. Second motor mounting base; 29. ​​Second motor mounting plate. 30. Hot horizontal sealing drive motor; 31. Third shaft seat; 32. Third transmission shaft; 33. Third transmission gear; 34. Cold horizontal sealing drive motor; 35. Fourth shaft seat; 36. Fourth transmission shaft; 37. Fourth transmission gear; 38. Packaging bag guide; 39. Connecting bracket; 40. Base; 41. First column; 42. Second column; 43. Third column; 44. Fourth column; 45. Fifth column; 46. Electrical box; 47. Electrical box wall panel; 48. Intermediate reinforcing beam; 49. Top reinforcing beam; 50. Electrical box door; 51. Rectangular reinforcing frame; 52. Mounting platform; 53. Reinforcing support frame; 54. Film feeding roller device; 55. Film feeding roller device mounting position; 56. Slitting mechanism; 57. Discharge port; 58. Cleaning door; 100. Sealing device. Detailed Implementation Plan The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Example 1 As a preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 and attached Figure 6As shown, this embodiment discloses a sealing device 100, including a first mounting plate 1 and a second mounting plate 2. The first mounting plate 1 and the second mounting plate 2 are arranged in parallel and spaced apart, and are connected together by a plurality of fixed connecting rods 3 between the first mounting plate 1 and the second mounting plate 2. The first mounting plate 1 and the second mounting plate 2 are provided with corresponding first mounting openings 5 ​​for mounting the longitudinal sealing roller mechanism 4, second mounting openings 7 for mounting the hot transverse sealing roller mechanism 6, and third mounting openings 9 for mounting the cold transverse sealing roller mechanism 8 from top to bottom. A stop bar 10 is installed at the mounting openings of the first mounting opening 5, the second mounting opening 7 and the third mounting opening 9, and an adjusting screw 11 for adjusting the roller spacing is threadedly connected to the stop bar 10.

[0029] In this embodiment, the longitudinal sealing roller mechanism 4, the hot transverse sealing roller mechanism 6, and the cold transverse sealing roller mechanism 8 are all existing structures. This embodiment does not involve any improvement to the structure of the longitudinal sealing roller mechanism 4, the hot transverse sealing roller mechanism 6, and the cold transverse sealing roller mechanism 8. All of them adopt the structures commonly used in existing three-side sealing packaging machines.

[0030] The sealing device 100 provided in this embodiment integrates the longitudinal sealing roller mechanism 4, the hot transverse sealing roller mechanism 6, and the cold transverse sealing roller mechanism 8, making the entire sealing device 100 a modular device. When assembling the three-side sealing packaging machine, the assembly of the three-side sealing packaging machine frame and the assembly of the sealing device 100 can be carried out simultaneously. Then, the sealing device 100 is assembled onto the frame of the three-side sealing packaging machine. Compared with the previous assembly structure, the assembly efficiency of the three-side sealing packaging machine is greatly improved.

[0031] Specifically, a modular sealing device 100 is formed by integrating and assembling the first mounting plate 1 and the second mounting plate 2. The first mounting plate 1 and the second mounting plate 2 are connected together by several fixed connecting rods 3 to enhance the structural stability of the first mounting plate 1 and the second mounting plate 2. As an example, four fixed connecting rods 3 are selected and located at the four corners of the first mounting plate 1 and the second mounting plate 2. In order to further enhance the structural stability of the first mounting plate 1 and the second mounting plate 2, it is feasible to increase the number of fixed connecting rods 3, and change the assembly position of the fixed connecting rods 3 without affecting the operation of the longitudinal sealing roller mechanism 4, the hot transverse sealing roller mechanism 6, and the cold transverse sealing roller mechanism 8.

[0032] Since the first mounting plate 1 and the second mounting plate 2 are connected together by several fixed connecting rods 3, an open structure is formed, which makes the longitudinal sealing roller mechanism 4, the hot transverse sealing roller mechanism 6 and the cold transverse sealing roller mechanism 8 in an open frame, which facilitates the cleaning of the roller mechanism.

[0033] Example 2 As a preferred embodiment of the present invention, this embodiment is a further detailed supplement and explanation of the technical solution of the present invention based on the above-described embodiment 1. In this embodiment, reference is made to the appendix to the specification. Figure 1 Appendix Figure 2 Appendix Figure 5 Appendix Figure 7 Appendix Figure 8 and attached Figure 9 As shown, the longitudinal sealing roller mechanism 4 includes an active longitudinal sealing roller 12 and a driven longitudinal sealing roller 13, which are driven by a first gear 14 and a second gear 15. A first motor mounting seat 16 is mounted on the outer side of the second mounting plate 2, and the longitudinal sealing drive motor 17 of the longitudinal sealing roller mechanism 4 is mounted on the first motor mounting seat 16. The first motor mounting seat 16 includes several connecting support columns 18 and a first motor mounting plate 19, which is arranged parallel to the second mounting plate 2 by several connecting support columns 18. A first shaft seat 20 is provided on the outer side of the second mounting plate 2, and the first shaft seat 20 is located inside the first motor mounting seat 16. A first transmission shaft 21 is rotatably mounted on the first shaft seat 20, and a first transmission gear 22 is provided on the first transmission shaft 21, which meshes with the first gear 14. The output shaft of the longitudinal sealing drive motor 17 is connected to the first transmission shaft 21 by a coupling 23.

[0034] In this embodiment, the drive structure of the longitudinal sealing roller mechanism 4 has been optimized and improved. The longitudinal sealing roller mechanism 4 adopts a direct-drive power transmission, that is, the longitudinal sealing drive motor 17 is directly connected to the first transmission shaft 21 through the coupling 23, which can improve the transmission stability and facilitate independent maintenance. On the one hand, the direct-drive transmission reduces intermediate transmission links (such as belts, chains, etc.), reduces power loss and transmission error, makes the rotation speed of the longitudinal sealing roller more stable, and ensures the sealing performance and consistency of the longitudinal sealing. On the other hand, the power transmission part is separated from the electrical box 46 to form an independent transmission unit. During subsequent maintenance, there is no need to disassemble the electrical box 46. The transmission components such as the longitudinal sealing drive motor 17 and the transmission shaft can be inspected or replaced separately, reducing maintenance time and costs.

[0035] As another embodiment of this invention, please refer to the appendix to the specification. Figure 1 and attached Figure 8As shown, a second bearing seat 24 is also provided on the outer side of the second mounting plate 2. A second drive shaft 25 is rotatably mounted on the second bearing seat 24. One end of the second drive shaft 25 is connected to the active longitudinal sealing roller 12 via a bevel gear set 26, and the other end of the second drive shaft 25 passes through the second bearing seat 24. The second bearing seat 24 is provided in this embodiment to transmit the power of the longitudinal sealing roller mechanism 4 to the film feeding roller device 54, so as to achieve the synchronization of film feeding by the film feeding roller device 54 and film pulling by the longitudinal sealing roller mechanism 4. The two use the same power source, which saves equipment costs on the one hand, and ensures the synchronization of film feeding and longitudinal sealing film pulling on the other hand, avoiding the stretching and deformation of the packaging film due to their asynchrony.

[0036] As another embodiment of this invention, please refer to the appendix to the specification. Figure 7 As shown, the second bearing 24 is provided with a first support frame 27 for auxiliary support of the heating assembly of the longitudinal sealing roller mechanism 4. The first support frame 27 on the second bearing 24 can assist in supporting the heating assembly of the longitudinal sealing roller mechanism 4, reduce the displacement of the heating assembly caused by its own weight or vibration, ensure uniform heating of the longitudinal sealing roller, and improve the sealing quality.

[0037] Example 3 As another preferred embodiment of this utility model, this embodiment is a further detailed supplement and explanation of the technical solution of this utility model based on the above-described embodiment 1 or embodiment 2. In this embodiment, refer to the appendix to the specification. Figure 1 Appendix Figure 2 and attached Figure 7 As shown, a second motor mounting base 28 is assembled on the outside of the second mounting plate 2. The second motor mounting base 28 includes a second motor mounting plate 29 and several connecting support columns 18. The second motor mounting plate 29 is arranged parallel to the second mounting plate 2 through the several connecting support columns 18. The second motor mounting plate 29 is used to assemble the heat sealing drive motor 30 of the heat sealing roller mechanism 6. A third shaft seat 31 is arranged on the outside of the second mounting plate 2. The third shaft seat 31 is located inside the second motor seat. A third transmission shaft 32 is rotatably mounted on the third shaft seat 31. A third transmission gear 33 is arranged on the third transmission shaft 32. The third transmission gear 33 meshes with the driving gear of the heat sealing roller mechanism 6. The output shaft of the heat sealing drive motor 30 is connected to the third transmission shaft 32 through a coupling 23.

[0038] In another embodiment of this invention, the cold horizontal sealing drive motor 34 of the cold horizontal sealing roller mechanism 8 is mounted on the second motor mounting plate 29; a fourth shaft seat 35 is provided on the outside of the second mounting plate 2, the fourth shaft seat 35 is located inside the second motor seat, a fourth transmission shaft 36 is rotatably mounted on the fourth shaft seat 35, a fourth transmission gear 37 is provided on the fourth transmission shaft 36, the fourth transmission gear 37 meshes with the drive gear of the cold horizontal sealing roller mechanism 8, and the output shaft of the cold horizontal sealing drive motor 34 is connected to the fourth transmission shaft 36 through a coupling 23.

[0039] In the two embodiments described above, the drive motors of the hot horizontal sealing roller mechanism 6 and the cold horizontal sealing roller mechanism 8 are changed to direct-drive power transmissions, achieving the same effect as the direct-drive power transmission of the longitudinal sealing roller mechanism 4 in Embodiment 2. Simultaneously, the power transmissions of the hot and cold horizontal sealing roller mechanisms 8 are integrated into the second motor mounting base 28, achieving independent power transmission: both the hot and cold horizontal sealing drive motors 34 are mounted on the second motor mounting base 28 and directly connected to the corresponding transmission shafts via couplings 23, completely separating the power transmissions of the two horizontal sealing mechanisms from the electrical box 46, forming a transmission module independent of the electrical system, facilitating individual maintenance and troubleshooting; simplifying the power layout: the transmission components of the two horizontal sealing mechanisms are concentrated in the same motor mounting base area, resulting in a compact structure, reducing the space occupied inside the equipment, and allowing operators to quickly identify and distinguish different transmission units, improving maintenance efficiency.

[0040] As another embodiment of this invention, please refer to the appendix to the specification. Figure 1 Appendix Figure 2 and attached Figure 7 As shown, the sealing device 100 has a packaging bag guide 38 at its bottom, which is mounted on the bottom of the first mounting plate 1 or the second mounting plate 2 via a connecting bracket 39. In this embodiment, the packaging bag guide 38 at the bottom of the sealing device 100 ensures the stability of the packaging bag transport. The guide precisely guides the sealed packaging film strip bag, preventing it from shifting or wrinkling during transport. This ensures that the subsequent cutting mechanism 56 can accurately cut or cut the dotted line at the horizontal sealing position of adjacent packaging bags, improving the product qualification rate. It also reduces transport resistance; the guide's smooth structural design reduces friction between the packaging bag and the equipment, preventing damage or surface scratches caused by friction and ensuring the appearance quality of the finished packaged product.

[0041] Example 4 As another preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 10 Appendix Figure 11 Appendix Figure 12 Appendix Figure 13 and attached Figure 14As shown, this embodiment provides a three-side sealing packaging machine using the sealing device 100 described in Embodiments 1, 2, and / or 3 above. The three-side sealing packaging machine includes a base 40, a first column 41, a second column 42, a third column 43, a fourth column 44, and a fifth column 45. The first column 41, the second column 42, the third column 43, and the fourth column 44 form the frame of the electrical box 46. The fifth column 45 is arranged parallel to the second column 42 at intervals. The first mounting plate 1 of the sealing device 100 is mounted on the fifth column 45, and the second mounting plate 2 is mounted on the second column 42.

[0042] In this embodiment, the sealing device 100 structure is connected to a specific three-side sealing frame structure, namely, the first and second mounting plates 2 of the sealing device 100 are connected to the frame columns to form an open back structure, ensuring thorough cleaning: the first mounting plate 1 of the sealing device 100 is mounted on the fifth column 45 of the frame and the second mounting plate 2 is mounted on the second column 42, so that the back of the sealing device 100 is not blocked, forming an open space, providing operating space for subsequent hygienic cleaning, and solving the problem of difficult cleaning of existing equipment due to the inner side being blocked by the substrate; the open back allows the operator to directly contact the inner side and gaps of the longitudinal sealing, hot transverse sealing, and cold transverse sealing roller mechanism 8, which can more thoroughly remove residual materials and avoid material contamination or equipment failure caused by incomplete cleaning.

[0043] As an example of this embodiment, please refer to the appendix to the specification. Figure 14 As shown, an openable and closable cleaning door 58 can be installed between the fifth column 45 and the electrical box 46. During equipment operation, this cleaning door 58 is kept closed to prevent contamination of the materials by the external environment during packaging. It is opened when cleaning is required to clean the longitudinal sealing, hot horizontal sealing, and cold horizontal sealing roller mechanisms 8. Similarly, openable and closable doors can also be installed on the front sides of the first mounting plate 1 and the second mounting plate 2, serving the same function as the openable and closable cleaning door 58 between the fifth column 45 and the electrical box 46.

[0044] Example 5 As another preferred embodiment of this utility model, this embodiment is a further detailed supplement and explanation of the technical solution of this utility model based on the above-described embodiment 4. In this embodiment, please refer to the appendix to the specification. Figure 11As shown, electrical box wall panels 47 and intermediate reinforcing beams 48 are provided between the first column 41 and the second column 42, between the second column 42 and the third column 43, and between the third column 43 and the fourth column 44; an openable and closable electrical box door 50 is provided between the fourth column 44 and the first column 41; the tops of the first column 41, the second column 42, the third column 43 and the fourth column 44 are connected in sequence by four top reinforcing beams 49 to form a rectangular reinforcing frame 51; an installation platform 52 is provided at the top of the fifth column 45, and the reinforcing support frame 53 inside the installation platform 52 supports the top of the fifth column 45. The reinforcing support frame 53 is fixedly connected to the first column 41, the second column 42 and the intermediate reinforcing beam 48 between the first column 41 and the second column 42. In this embodiment, the electrical box 46 frame formed by the first to fourth columns 44 is completely separated from the moving parts such as the sealing device 100. This allows for independent inspection and dust protection of the electrical box 46, as well as independent lubrication and cleaning of the moving parts, avoiding mutual interference during maintenance and reducing maintenance difficulty. The electrical box wall panel 47 provides isolation and protection. The rectangular reinforcing frame 51 and the intermediate reinforcing beam 48 enhance structural stability and also bear the weight of other components, allowing other components (such as the sealing device 100, the cutting mechanism, and the film feeding roller device 54) to be directly mounted on the columns or reinforcing beams, providing strong and stable support for the components.

[0045] Furthermore, the top reinforcing beam 49 and the middle reinforcing beam 48 between the second column 42 and the third column 43 form the installation position 55 for the film feeding roller device of the three-side sealing packaging machine. Utilizing the existing reinforcing beams of the frame to form the installation position eliminates the need for additional support structures, saving internal space and allowing for a better match between the film feeding roller device 54 and the sealing device 100. This ensures a smooth conveying path for the packaging film strip and reduces tension fluctuations during transport. The installation position, relying on the reinforcing beam structure of the frame, provides stable support for the film feeding roller device 54, preventing film misalignment due to device shaking during film feeding and ensuring the accuracy of subsequent folding and sealing processes.

[0046] As another implementation of this embodiment, the mounting platform 52 can be used to assemble metering components, such as liquid metering pumps and other devices (which can be replaced according to the actual material requirements to be packaged by the three-side sealing packaging machine). The mounting platform 52 provides support for the metering device, eliminating the need for additional brackets for assembly, thus simplifying the structure and making the entire three-side sealing packaging machine more integrated.

[0047] The position of the mounting platform 52 is also adapted to the sealing device 100. The material (such as liquid, powder or granules) measured by the metering component on the mounting platform 52 can fall directly into the packaging bag of the sealing device 100, and then be hot-sealed or cold-sealed. Finally, it is cut or cut with a dotted line by the cutting mechanism 56 and discharged through the discharge port 57.

[0048] The three-side sealing packaging machine mentioned in the above embodiments is not only applicable to three-side sealing packaging, but also to double-row three-side sealing and four-side sealing packaging. This is determined by the roller structure of the longitudinal sealing roller. When there are two longitudinal sealing rollers on the longitudinal sealing roller, it can be used for double-row three-side sealing (with a large distance between the two longitudinal sealing rollers) or four-side sealing (with a small distance between the two longitudinal sealing rollers). However, whether it is single-row three-side sealing, double-row three-side sealing, or four-side sealing, it does not constitute an implementation of the above-mentioned implementation scheme, and all fall within the scope of the technical solution claimed by this utility model.

Claims

1. A sealing device, characterized in that: It includes a first mounting plate (1) and a second mounting plate (2), which are arranged in parallel and spaced apart, and are connected together by a number of fixed connecting rods (3) between the first mounting plate (1) and the second mounting plate (2); the first mounting plate (1) and the second mounting plate (2) are provided with corresponding first mounting port (5) for installing the longitudinal sealing roller mechanism (4), second mounting port (7) for installing the hot horizontal sealing roller mechanism (6) and third mounting port (9) for installing the cold horizontal sealing roller mechanism (8) from top to bottom; the first mounting port (5), the second mounting port (7) and the third mounting port (9) are all equipped with a stop bar (10), and an adjusting screw (11) for adjusting the roller spacing is threaded onto the stop bar (10).

2. The sealing device as described in claim 1, characterized in that: The longitudinal sealing roller mechanism (4) includes an active longitudinal sealing roller (12) and a driven longitudinal sealing roller (13), which are driven by a first gear (14) and a second gear (15) meshing and transmitting power. A first motor mounting base (16) is mounted on the outer side of the second mounting plate (2), and the longitudinal sealing drive motor (17) of the longitudinal sealing roller mechanism (4) is mounted on the first motor mounting base (16). The first motor mounting base (16) includes several connecting support columns (18) and a first motor mounting plate (19). 19) A number of connecting support columns (18) are set parallel to the second mounting plate (2); a first shaft seat (20) is set on the outside of the second mounting plate (2), and the first shaft seat (20) is located inside the first motor mounting seat (16); a first transmission shaft (21) is rotatably mounted on the first shaft seat (20), and a first transmission gear (22) is set on the first transmission shaft (21), and the first transmission gear (22) meshes with the first gear (14); the output shaft of the longitudinal sealing drive motor (17) is connected to the first transmission shaft (21) through a coupling (23).

3. The sealing device as described in claim 2, characterized in that: A second bearing seat (24) is also provided on the outer side of the second mounting plate (2). A second drive shaft (25) is rotatably mounted on the second bearing seat (24). One end of the second drive shaft (25) is connected to the active longitudinal sealing roller (12) through a bevel gear set (26), and the other end of the second drive shaft (25) passes through the second bearing seat (24).

4. The sealing device as described in claim 3, characterized in that: The second shaft seat (24) is provided with a first support frame (27) for auxiliary support of the heating assembly of the longitudinal sealing roller mechanism (4).

5. The sealing device according to any one of claims 1-4, characterized in that: A second motor mounting base (28) is mounted on the outside of the second mounting plate (2). The second motor mounting base (28) includes a second motor mounting plate (29) and several connecting support columns (18). The second motor mounting plate (29) is set parallel to the second mounting plate (2) through several connecting support columns (18). The second motor mounting plate (29) is used to mount the hot horizontal sealing drive motor (30) of the hot horizontal sealing roller mechanism (6). A third shaft seat (31) is set on the outside of the second mounting plate (2). The third shaft seat (31) is located inside the second motor seat. A third transmission shaft (32) is rotatably mounted on the third shaft seat (31). A third transmission gear (33) is set on the third transmission shaft (32). The third transmission gear (33) meshes with the driving gear of the hot horizontal sealing roller mechanism (6). The output shaft of the hot horizontal sealing drive motor (30) is connected to the third transmission shaft (32) through a coupling (23).

6. The sealing device as described in claim 5, characterized in that: The cold horizontal sealing drive motor (34) of the cold horizontal sealing roller mechanism (8) is mounted on the second motor mounting plate (29); a fourth shaft seat (35) is provided on the outside of the second mounting plate (2), the fourth shaft seat (35) is located inside the second motor seat, a fourth transmission shaft (36) is rotatably mounted on the fourth shaft seat (35), a fourth transmission gear (37) is provided on the fourth transmission shaft (36), the fourth transmission gear (37) meshes with the drive gear of the cold horizontal sealing roller mechanism (8), and the output shaft of the cold horizontal sealing drive motor (34) is connected to the fourth transmission shaft (36) through a coupling (23).

7. The sealing device according to any one of claims 1-4, characterized in that: The bottom of the sealing device (100) is provided with a packaging bag guide (38), which is assembled to the bottom of the first mounting plate (1) or the second mounting plate (2) via a connecting bracket (39).

8. A three-side sealing packaging machine using the sealing device described in any one of claims 1-7, characterized in that: The device includes a base (40), a first column (41), a second column (42), a third column (43), a fourth column (44), and a fifth column (45). The first column (41), the second column (42), the third column (43), and the fourth column (44) form the frame of the electrical box (46). The fifth column (45) is arranged parallel to the second column (42) at intervals. The first mounting plate (1) of the sealing device (100) is installed on the fifth column (45), and the second mounting plate (2) is installed on the second column (42).

9. The three-side sealing packaging machine as described in claim 8, characterized in that: Electrical box wall panels (47) and intermediate reinforcing beams (48) are provided between the first column (41) and the second column (42), between the second column (42) and the third column (43), and between the third column (43) and the fourth column (44); an openable and closable electrical box door (50) is provided between the fourth column (44) and the first column (41); the tops of the first column (41), the second column (42), the third column (43) and the fourth column (44) are connected in sequence by four top reinforcing beams (49) to form a rectangular reinforcing frame (51); an installation platform (52) is provided at the top of the fifth column (45), and the reinforcing support frame (53) inside the installation platform (52) is supported at the top of the fifth column (45). The reinforcing support frame (53) is fixedly connected to the first column (41), the second column (42) and the intermediate reinforcing beam (48) between the first column (41) and the second column (42).

10. The three-side sealing packaging machine as described in claim 9, characterized in that: The top reinforcing beam (49) and the middle reinforcing beam (48) between the second column (42) and the third column (43) form the installation position (55) for the film feeding roller device of the three-side sealing packaging machine.

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