Food sealing device for sealing paper bag

Abstract

The utility model discloses a food sealing device for sealing a paper bag, which comprises a box body, and a paper bag conveying mechanism, a pre-folding mechanism, a folding mechanism and a labeling mechanism are arranged in the box body; the pre-folding mechanism, the folding mechanism and the labeling mechanism are sequentially arranged in the conveying direction of the paper bag conveying mechanism. The pre-folding mechanism comprises a supporting block, a telescopic driving assembly, two small grabbing clamps, two large grabbing clamps and two grabbing clamp connecting pieces. The telescopic driving assembly and the supporting block are both installed on the inner top wall of the box body, and the two grabbing and clamping connecting pieces are installed at the telescopic end of the telescopic driving assembly. The folding mechanism comprises a lifting support and a gradually-shrinking guide groove, and the gradually-shrinking guide groove is formed in the inner top wall of the box body. The labeling mechanism comprises a lifting plate installed on the inner top wall of the box body, and an electric labeling assembly and a label waste collecting assembly are installed on the lifting plate. The automatic sealing, folding, labeling and other operations of the paper bag can be achieved, the production efficiency is effectively improved, and meanwhile operation simplicity and equipment stability are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of food packaging technology, and in particular to a food sealing device for sealing paper bags. Background Technology

[0002] Food packaging is a crucial step in ensuring food safety and quality. Existing food production lines typically rely on manual labor for packaging and sealing. However, this manual packaging method has many problems, such as low production efficiency, high skill requirements for workers, and potential hygiene and safety risks, failing to meet the stringent efficiency and hygiene standards of modern food production. While the application of automated equipment has improved efficiency, automated systems are complex, have high maintenance costs, and are relatively unstable.

[0003] While some existing technologies attempt to automate operations, there is still no mature solution that can completely replace manual labor in sealing, folding, and labeling paper bags, especially in ensuring sealing quality, efficiency, and hygiene while also ensuring ease of operation and long-term stability.

[0004] Therefore, it is particularly important to design a food packaging production line based on mechanical structure that can improve production efficiency while ensuring ease of operation and equipment stability. Utility Model Content

[0005] The purpose of this invention is to provide a food sealing device for sealing paper bags, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a food sealing device for sealing paper bags, including a box body, in which a paper bag conveying mechanism, a pre-folding mechanism, a folding mechanism, and a labeling mechanism are installed; the pre-folding mechanism, the folding mechanism, and the labeling mechanism are arranged sequentially along the conveying direction of the paper bag conveying mechanism;

[0007] The pre-folding mechanism includes a support block, a telescopic drive assembly, two small grippers, two large grippers, and two gripper connectors. The telescopic drive assembly and the support block are both installed on the inner top wall of the housing. The two gripper connectors are installed on the telescopic end of the telescopic drive assembly. The two small grippers are arranged opposite each other, and the two large grippers are arranged opposite each other. The tops of the small grippers and the tops of the large grippers are both hinged to the gripper connectors. The middle sections of the small grippers and the middle sections of the large grippers are respectively hinged to the support block. A pressure block is installed at the bottom of the large grippers, and the pressure surfaces of the two pressure blocks are set as right-angle pressure surfaces.

[0008] The folding mechanism includes a lifting bracket and a tapering guide groove, wherein the tapering guide groove is installed on the inner top wall of the box via the lifting bracket;

[0009] The labeling mechanism includes a lifting plate installed on the inner top wall of the box, and an electric labeling assembly and a label waste collection assembly are installed on the lifting plate.

[0010] The tapered guide groove is laterally disposed between the pressure block and the lifting plate, and the dimension of the tapered guide groove at one end near the pressure block is larger than the dimension of the other end.

[0011] According to the present invention, a food sealing device for sealing paper bags includes a paper bag conveying mechanism comprising:

[0012] A sliding groove is installed on the inner side wall of the housing, and the pressure block, the tapered guide groove, and the lifting plate are all located directly above the sliding groove; a long through groove is formed on the bottom surface of the sliding groove;

[0013] A side panel is installed on the inner side wall of the housing and is located below the slide groove; two inclined first slide rails are installed on the side wall, the two first slide rails are arranged in parallel, and a first slider is slidably connected to the first slide rail;

[0014] A first motor is mounted on the side plate, and a rotating connecting rod is mounted on the output shaft of the first motor.

[0015] The first connecting rod has one end rotatably connected to the end of the rotating connecting rod, and the other end rotatably connected to one of the first sliders;

[0016] A four-bar linkage assembly, which is rotatably connected between the two first sliders;

[0017] A shift fork is slidably connected in the long through groove, and the bottom of the shift fork is respectively mounted on two first sliders via two second connecting rods;

[0018] The pressure block, the tapered guide groove are arranged laterally, and the lifting plate is arranged sequentially along the conveying direction of the fork.

[0019] According to the present invention, a food sealing device for sealing paper bags includes a lifting plate comprising:

[0020] The second slide rail is installed on the inner top wall of the housing;

[0021] The second slider is slidably connected to the second slide rail, and a positioning bolt is installed between the second slider and the second slide rail;

[0022] A first connecting plate is mounted on the second slider;

[0023] The support column is provided in two parts, and the top of both support columns is fixedly connected to the first connecting plate.

[0024] A load-bearing plate is installed at the bottom of the two support columns; a paper-pressing groove is provided through the load-bearing plate and is located between the two support columns.

[0025] Both the electric labeling assembly and the label waste collection assembly are mounted on the load-bearing plate.

[0026] According to the present invention, a food sealing device for sealing paper bags is provided, wherein the electric labeling assembly includes a driven roller and a labeling roller symmetrically mounted on the load-bearing plate, a second motor is mounted on the load-bearing plate, and the output shaft of the second motor is shaft-connected to the labeling roller via a coupling. The driven roller and the labeling roller are respectively mounted on both sides of the paper pressing groove.

[0027] The label waste collection assembly includes a label roll and a third motor, both of which are mounted on the load-bearing plate. The output shaft of the third motor is connected to the label waste collection roll via a coupling.

[0028] According to the present invention, a food sealing device for sealing paper bags includes a lifting support comprising:

[0029] The third slide rail is installed on the inner top wall of the housing;

[0030] The third slider is slidably connected to the third slide rail, and a positioning bolt is installed between the third slider and the third slide rail;

[0031] The second connecting plate is mounted on the third slider, and a plurality of vertical rods are mounted on the second connecting plate. The top of the tapered guide groove is fixedly connected to the plurality of vertical rods.

[0032] According to the present invention, a food sealing device for sealing paper bags is provided, wherein the four-bar linkage includes two third links and two fourth links. The two third links are arranged in parallel, and the two fourth links are arranged in parallel. The two ends of one third link are respectively rotatably connected to the two first sliders, the two ends of the other third link are respectively rotatably connected to the bottom of the two fourth links, and the tops of the two fourth links are respectively rotatably connected to the two first sliders.

[0033] According to the present invention, a food sealing device for sealing paper bags is provided, wherein the telescopic drive assembly includes a telescopic motor, the telescopic motor is installed on the top wall of the box, the telescopic end of the telescopic motor slides into the inner cavity of the box, and the telescopic end of the telescopic motor is slidably connected to the support block, and both gripping connectors are fixedly installed on the telescopic end of the telescopic motor.

[0034] According to the present invention, a food sealing device for sealing paper bags is provided, wherein the outer casing of the box is provided with a sheet metal shell, and louvers are installed on the sheet metal shell.

[0035] The present invention discloses the following technical effects:

[0036] This utility model uses the telescopic drive component to move upwards, causing the two small grippers to retract first, making the side of the food paper bag concave. Then, the two large grippers retract, and the pressure blocks of the two large grippers squeeze and fold the paper bag down to form a 90-degree bend. The folded part is in a drooping state due to gravity. Then, the paper bag is completely folded through the tapered guide groove. After being labeled by the labeling mechanism, the processing process is completed.

[0037] This invention uses a paper bag conveying mechanism to sequentially transfer the processed paper bag material to a pre-folding mechanism, a folding mechanism, and a labeling mechanism. Through precise coordination between these mechanisms, it achieves automatic sealing, folding, and labeling of the paper bags. This invention eliminates the need for a complex electrical control system, resulting in low maintenance costs and simple operation. It ensures high production efficiency and stability, improving packaging efficiency and enhancing the durability and ease of maintenance of the equipment. It is particularly suitable for food production lines with high requirements for stability and reliability.

[0038] This utility model adopts a modular design and an adjustable design for the lifting bracket and lifting plate, which makes the device highly adaptable and able to handle packaging bags of different specifications and types, meeting the needs of the modern food processing industry for efficient, reliable and environmentally friendly equipment. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is the front view of the present invention;

[0041] Figure 2 This is a schematic diagram of the structure of this utility model;

[0042] Figure 3 This is a schematic diagram of the installation of the sliding groove and the shift fork in this utility model;

[0043] Figure 4 This is a schematic diagram of the paper bag conveying mechanism in this utility model;

[0044] Figure 5 This is a schematic diagram of the pre-folding mechanism in this utility model. Figure I ;

[0045] Figure 6 This is a schematic diagram of the pre-folding mechanism in this utility model. Figure II ;

[0046] Figure 7 This is a schematic diagram of the folding mechanism in this utility model;

[0047] Figure 8 This is a schematic diagram of the labeling mechanism in this utility model.

[0048] The components include: 1. Box body; 2. Paper bag conveying mechanism; 21. Slide groove; 22. Fork; 23. First slide rail; 24. First slider; 25. First motor; 26. Rotating linkage; 27. First connecting rod; 28. Third connecting rod; 29. ​​Fourth connecting rod; 3. Pre-folding mechanism; 31. Support block; 32. Telescopic motor; 33. Small gripper; 34. Large gripper; 35. Gripper connector; 36. Pressure block; 4. Folding mechanism; 41. Gradient guide groove; 42. Third slide rail; 43. Third slider; 44. Second connecting plate; 45. Vertical rod; 5. Labeling mechanism; 51. Second slide rail; 52. Second slider; 53. First connecting plate; 54. Load-bearing plate; 55. Paper pressing groove; 56. Driven roller; 57. Labeling roller; 58. Label roll; 59. Label waste collection roll; 6. Sheet metal shell; 7. Louver. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] Reference Figures 1-8This utility model provides a food sealing device for sealing paper bags, including a box 1, and a paper bag conveying mechanism 2, a pre-folding mechanism 3, a folding mechanism 4 and a labeling mechanism 5 are installed inside the box 1; the pre-folding mechanism 3, the folding mechanism 4 and the labeling mechanism 5 are arranged sequentially along the conveying direction of the paper bag conveying mechanism 2.

[0052] The pre-folding mechanism 3 includes a support block 31, a telescopic drive assembly, two small grippers 33, two large grippers 34, and two gripper connectors 35. The telescopic drive assembly and the support block 31 are both installed on the inner top wall of the housing 1. The two gripper connectors 35 are installed on the telescopic end of the telescopic drive assembly. The two small grippers 33 are arranged opposite each other, and the two large grippers 34 are arranged opposite each other. The top of the small grippers 33 and the top of the large grippers 34 are both hinged to the gripper connectors 35. The middle sections of the small grippers 33 and the middle sections of the large grippers 34 are respectively hinged to the support block 31. The bottom of the large grippers 34 is equipped with a pressure block 36, and the pressure surfaces of the two pressure blocks 36 are set as right-angle pressure surfaces.

[0053] The folding mechanism 4 includes a lifting bracket and a tapered guide groove 41. The tapered guide groove 41 is installed on the inner top wall of the box 1 through the lifting bracket. The unique structure of the tapered guide groove 41 can ensure that the paper bag after pre-folding can completely pass through the tapered guide groove 41 and is in a fully folded state after being processed by the tapered guide groove 41. The front end has a wide part to ensure that the paper bag with curled edges during the partial folding process can also enter smoothly. When the bottom paper bag conveying mechanism 2 pushes the food paper bag through this part, the fold that was originally bent at about 90° will become a fully folded mode, thereby realizing the function of folding and sealing.

[0054] The labeling mechanism 5 includes a lifting plate installed on the inner top wall of the housing 1, and an electric labeling assembly and a label waste collection assembly are installed on the lifting plate;

[0055] The tapered guide groove 41 is laterally disposed between the pressure block 36 and the lifting plate, and the size of the tapered guide groove 41 at one end near the pressure block 36 is larger than the size at the other end.

[0056] With this configuration, the telescopic drive assembly moves upward, causing the two small grippers 33 to retract inward first, making the side of the food paper bag concave inward first. Then, the two large grippers 34 retract inward, and the pressure blocks 36 of the two large grippers 34 squeeze and fold the paper bag down to form a 90-degree bend. The folded part is in a drooping state due to gravity. Then, the paper bag is completely folded through the tapered guide groove 41. After being labeled by the labeling mechanism 5, the processing process is completed.

[0057] This invention uses a paper bag conveying mechanism 2 to sequentially transfer the processed paper bag material to a pre-folding mechanism 3, a folding mechanism 4, and a labeling mechanism 5. Through the precise coordination between these mechanisms, the paper bags can be automatically sealed, folded, and labeled. This invention does not require a complex electrical control system, has low maintenance costs, and is easy to operate, ensuring high production efficiency and stability. It not only improves packaging efficiency but also enhances the durability and ease of maintenance of the equipment, making it particularly suitable for food production lines with high requirements for stability and reliability.

[0058] This utility model adopts a modular design and an adjustable design for the lifting bracket and lifting plate, which makes the device highly adaptable and able to handle packaging bags of different specifications and types, meeting the needs of the modern food processing industry for efficient, reliable and environmentally friendly equipment.

[0059] The paper bag conveying mechanism 2 is further optimized to include:

[0060] The slide 21 is installed on the inner side wall of the housing 1. The pressure block 36, the tapered guide groove 41 and the lifting plate are all located directly above the slide 21. The bottom surface of the slide 21 is provided with a long through groove.

[0061] Side panel, the side panel is installed on the inner side wall of the housing 1 and the side panel is located below the slide groove 21; two inclined first slide rails 23 are installed on the side wall, the two first slide rails 23 are arranged in parallel, and a first slider 24 is slidably connected on the first slide rail 23;

[0062] A first motor 25 is mounted on a side plate, and a rotating connecting rod 26 is mounted on the output shaft of the first motor 25.

[0063] The first connecting rod 27 has one end rotatably connected to the end of the rotating connecting rod 26, and the other end rotatably connected to one of the first sliders 24;

[0064] The four-bar linkage is rotatably connected between the two first sliders 24;

[0065] The shift fork 22 is slidably connected in the long through groove. The bottom of the shift fork 22 is respectively mounted on the two first sliders 24 via two second connecting rods. Several shift fork blocks are fixedly connected to the top of the shift fork 22 at equal intervals.

[0066] Among them, the pressure block 36, the tapered guide groove 41 are arranged horizontally, and the lifting plate is arranged sequentially along the conveying direction of the fork 22;

[0067] The paper bag conveying mechanism 2 is connected in a unique way and works in combination for intermittent transmission. The first motor 25 provides the main rotational power and becomes the power source for rotation. The first motor 25 drives the rotating link 26 to rotate periodically in the vertical plane. The first link 27 and the four-bar linkage assembly convert the vertical rotation into the translational power of the planar four-bar linkage in the vertical direction.

[0068] The periodic oscillation of the rotating link 26 in the vertical plane and the periodic translation of the four-bar linkage in the vertical direction enable the fork 22 to move periodically in the vertical direction when conveying the food paper bag. The first link 27 oscillates in the vertical plane. When its upper plane is parallel to the plane of the slide groove 21 of the equipment housing 1, it reaches the limit position of the fork 22 of the paper bag conveying mechanism 2 in the left and right movements. By calculating the width of the food paper bag, the size of the paper bag conveying mechanism 2 can be adjusted to ensure that the food paper bag can be smoothly moved from the left end of the previous fork block to the left end of the other fork block. The difference between the left and right limit distances should be greater than the lateral distance of the paper bag plus the width of one fork block. Therefore, it can be seen that when the crank-slider mechanism composed of the rotating link 26 and the first link 27 and the four-bar linkage in the lower transmission module move periodically, it can ensure that the food paper bag is intermittently pushed, thereby ensuring that the other mechanisms of the equipment can fold and seal the paper bag and affix labels.

[0069] Further optimization of the solution includes the following:

[0070] The second slide rail 51 is installed on the inner top wall of the housing 1;

[0071] The second slider 52 is slidably connected to the second slide rail 51, and a positioning bolt is installed between the second slider 52 and the second slide rail 51.

[0072] The first connecting plate 53 is mounted on the second slider 52;

[0073] Two support columns are provided, and the tops of both support columns are fixedly connected to the first connecting plate 53.

[0074] A load-bearing plate 54 is installed at the bottom of two support columns; a paper pressing groove 55 is provided through the load-bearing plate 54 and is located between the two support columns.

[0075] The electric labeling assembly and the label waste collection assembly are both installed on the load-bearing plate 54.

[0076] The scheme is further optimized. The electric labeling assembly includes a driven roller 56 and a labeling roller 57 symmetrically mounted on a load-bearing plate 54. A second motor is mounted on the load-bearing plate 54. The output shaft of the second motor is connected to the labeling roller 57 via a coupling. The driven roller 56 and the labeling roller 57 are respectively mounted on both sides of the paper pressing groove 55.

[0077] The label waste collection assembly includes a label roll 58 and a third motor. Both the label roll 58 and the third motor are mounted on a load-bearing plate 54. The output shaft of the third motor is connected to the label waste collection roll 59 via a coupling.

[0078] When the fork 22 transports the paper bag along the chute 21 to the workstation, the second motor drives the labeling roller 57 to rotate, using friction to roll the paper bag to the right. The driven roller 56 is also rotated due to friction. This part can compress the folded paper bag. The label with plastic film is rolled out from the label roll 58 and passes between the labeling roller 57 and the driven roller 56 to label the folded paper bag. After labeling, the plastic film without label is wrapped around the label waste collection roll 59. The third motor at the bottom of the label waste collection roll 59 rotates slightly to ensure that the label plastic film is completely wrapped. In addition, for cost considerations, the third motor uses a low-power motor, which only needs to ensure that the plastic film without label is wrapped normally.

[0079] Further optimization of the design, the lifting support includes:

[0080] The third slide rail 42 is installed on the inner top wall of the housing 1;

[0081] The third slider 43 is slidably connected to the third slide rail 42, and a positioning bolt is installed between the third slider 43 and the third slide rail 42.

[0082] The second connecting plate 44 is mounted on the third slider 43. Several vertical rods 45 are mounted on the second connecting plate 44, and the top of the tapered guide groove 41 is fixedly connected to the several vertical rods 45.

[0083] Further optimization of the scheme: the four-bar linkage assembly includes two third links 28 and two fourth links 29. The two third links 28 are arranged in parallel, and the two fourth links 29 are arranged in parallel. The two ends of one third link 28 are rotatably connected to the two first sliders 24 respectively, the two ends of the other third link 28 are rotatably connected to the bottom of the two fourth links 29 respectively, and the tops of the two fourth links 29 are rotatably connected to the two first sliders 24 respectively.

[0084] Further optimization of the scheme: the telescopic drive component includes a telescopic motor 32, which is installed on the top wall of the housing 1. The telescopic end of the telescopic motor 32 slides into the inner cavity of the housing 1, and the telescopic end of the telescopic motor 32 is slidably connected to the support block 31. Both gripper connectors 35 are fixedly installed on the telescopic end of the telescopic motor 32.

[0085] The telescopic motor 32 is connected to the telescopic column via threads, which ensures that the telescopic column moves downward with the telescopic motor support. Both gripper connectors 35 are fixedly installed on the telescopic column.

[0086] In use, the two gripper connectors 35 fixed on the telescopic column connect the two small grippers 33 and the two large grippers 34 to move downwards. Since the trapezoidal part remains stationary at this time, the connection between the connector and the trapezoidal part also remains stationary. The unique design structure of the two small grippers 33 and the two large grippers 34 allows the two small grippers 33 and the two large grippers 34 to swing outwards when the telescopic column moves downwards, achieving an "expansion" effect. Similarly, when the telescopic motor 32 moves the telescopic column upwards, the robotic arm and the robotic claw work together, and the two small grippers 33 and the two large grippers 34 can achieve an "inward retraction" effect. By designing the two small grippers 33 and the two large grippers 34 to have different arm lengths, when the telescopic column moves up and down the same distance, the movement speed of the two small grippers 33 is greater than that of the two large grippers 34, thereby achieving the effect of folding the paper bag with the sides concave inwards first, followed by the front.

[0087] The design has been further optimized. The outer cover of the box 1 is provided with a sheet metal shell 6, and louvers 7 are installed on the sheet metal shell 6.

[0088] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0089] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A food sealing device for sealing paper bags, characterized in that: Includes a box body (1), and a paper bag conveying mechanism (2), a pre-folding mechanism (3), a folding mechanism (4) and a labeling mechanism (5) are installed inside the box body (1); the pre-folding mechanism (3), the folding mechanism (4) and the labeling mechanism (5) are arranged sequentially along the conveying direction of the paper bag conveying mechanism (2); The pre-folding mechanism (3) includes a support block (31), a telescopic drive assembly, two small grippers (33), two large grippers (34), and two gripper connectors (35); the telescopic drive assembly and the support block (31) are both installed on the inner top wall of the box (1), the two gripper connectors (35) are installed on the telescopic end of the telescopic drive assembly, the two small grippers (33) are arranged opposite to each other, the two large grippers (34) are arranged opposite to each other, the top of the small grippers (33) and the top of the large grippers (34) are both hinged to the gripper connectors (35), the middle section of the small grippers (33) and the middle section of the large grippers (34) are respectively hinged to the support block (31), and a pressure block (36) is installed at the bottom of the large grippers (34), the pressure surfaces of the two pressure blocks (36) are set as right-angle pressure surfaces; The folding mechanism (4) includes a lifting bracket and a tapered guide groove (41), which is installed on the inner top wall of the box (1) via the lifting bracket; The labeling mechanism (5) includes a lifting plate installed on the inner top wall of the box (1), and an electric labeling assembly and a label waste collection assembly are installed on the lifting plate; The tapered guide groove (41) is laterally disposed between the pressure block (36) and the lifting plate, and the size of the tapered guide groove (41) at one end near the pressure block (36) is larger than the size of the other end.

2. The food sealing device for sealing paper bags according to claim 1, characterized in that: The paper bag conveying mechanism (2) includes: The slide (21) is installed on the inner side wall of the box (1). The pressure block (36), the tapered guide groove (41) and the lifting plate are all located directly above the slide (21). The bottom surface of the slide (21) is provided with a long through groove. Side plate, the side plate is installed on the inner side wall of the box (1) and the side plate is located below the slide groove (21); two inclined first slide rails (23) are installed on the side wall, the two first slide rails (23) are arranged in parallel, and a first slider (24) is slidably connected on the first slide rail (23); A first motor (25) is mounted on the side plate, and a rotating connecting rod (26) is mounted on the output shaft of the first motor (25); The first connecting rod (27) has one end rotatably connected to the end of the rotating connecting rod (26), and the other end rotatably connected to one of the first sliders (24); A four-bar linkage assembly is rotatably connected between the two first sliders (24); The fork (22) is slidably connected in the long through groove, and the bottom of the fork (22) is respectively mounted on the two first sliders (24) via two second connecting rods; The pressure block (36), the tapered guide groove (41) are arranged laterally, and the lifting plate is arranged sequentially along the conveying direction of the fork (22).

3. The food sealing device for sealing paper bags according to claim 1, characterized in that: The lifting platform includes: The second slide rail (51) is installed on the inner top wall of the housing (1); The second slider (52) is slidably connected to the second slide rail (51), and a positioning bolt is installed between the second slider (52) and the second slide rail (51); A first connecting plate (53) is mounted on the second slider (52); Support columns, two of which are fixedly connected at the top to the first connecting plate (53); A load-bearing plate (54) is installed at the bottom of the two support columns; a paper pressing groove (55) is provided through the load-bearing plate (54) and the paper pressing groove (55) is located between the two support columns; The electric labeling assembly and the label waste collection assembly are both installed on the load-bearing plate (54).

4. The food sealing device for sealing paper bags according to claim 3, characterized in that: The electric labeling assembly includes a driven roller (56) and a labeling roller (57) symmetrically mounted on the load-bearing plate (54). A second motor is mounted on the load-bearing plate (54), and the output shaft of the second motor is axially connected to the labeling roller (57) via a coupling. The driven roller (56) and the labeling roller (57) are respectively mounted on both sides of the paper pressing groove (55). The label waste collection assembly includes a label roll (58) and a third motor. Both the label roll (58) and the third motor are mounted on the load-bearing plate (54). The output shaft of the third motor is connected to the label waste collection roll (59) via a coupling.

5. The food sealing device for sealing paper bags according to claim 1, characterized in that: The lifting support includes: The third slide rail (42) is installed on the inner top wall of the housing (1); The third slider (43) is slidably connected to the third slide rail (42), and a positioning bolt is installed between the third slider (43) and the third slide rail (42); The second connecting plate (44) is mounted on the third slider (43). Several vertical rods (45) are mounted on the second connecting plate (44). The top of the tapered guide groove (41) is fixedly connected to several of the vertical rods (45).

6. The food sealing device for sealing paper bags according to claim 2, characterized in that: The four-bar linkage assembly includes two third links (28) and two fourth links (29). The two third links (28) are arranged in parallel, and the two fourth links (29) are arranged in parallel. The two ends of one third link (28) are rotatably connected to the two first sliders (24), and the two ends of the other third link (28) are rotatably connected to the bottom of the two fourth links (29). The tops of the two fourth links (29) are rotatably connected to the two first sliders (24).

7. The food sealing device for sealing paper bags according to claim 1, characterized in that: The telescopic drive assembly includes a telescopic motor (32), which is mounted on the top wall of the housing (1). The telescopic end of the telescopic motor (32) slides into the inner cavity of the housing (1), and the telescopic end of the telescopic motor (32) is slidably connected to the support block (31). Both gripping connectors (35) are fixedly mounted on the telescopic end of the telescopic motor (32).

8. The food sealing device for sealing paper bags according to claim 1, characterized in that: The box (1) is covered with a sheet metal shell (6), and louvers (7) are installed on the sheet metal shell (6).

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