Paper bag sealing mechanism

Abstract

The utility model discloses a paper bag sealing mechanism which comprises a frame body, a support, a detection assembly, an automatic bag folding assembly, a labeling assembly and a driving assembly, a conveying belt and the support are arranged on the frame body, the detection assembly is arranged on the support and used for detecting paper bags, and the automatic bag folding assembly is vertically arranged on the support in a sliding mode and used for folding the paper bags for the first time. A labeling assembly is arranged at the top of the automatic bag folding assembly and used for conducting secondary folding and labeling on the paper bags, a driving assembly is arranged at the top of the support, and the driving assembly is matched with the automatic bag folding assembly so as to drive the automatic bag folding assembly and the labeling assembly to vertically slide along the support; the bracket is arranged, and the automatic bag folding assembly, the labeling assembly and the driving assembly are vertically arranged on the bracket, so that the occupied space of the bag sealing mechanism can be effectively reduced, the space utilization rate of a factory area can be improved, and the cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, specifically to a paper bag sealing mechanism. Background Technology

[0002] The process of sealing paper bags is a highly repetitive and labor-intensive task. Manually sealing paper bags requires folding, aligning, gluing, or sewing the seal, which is a relatively slow and time-consuming process.

[0003] Currently, many production lines use automatic paper bag sealing equipment to improve work efficiency. However, most existing automatic sealing equipment is arranged along the length of the production line, thus occupying a large space. For example, the invention patent with publication number CN119240095A discloses "an automatic sealing device and method for square bottom paper bags", which includes a frame plate and a transport mechanism, as well as a bag clamping mechanism, a bag pressing mechanism, a labeling mechanism and a label rolling mechanism arranged along the length of the transport mechanism. Multiple mechanisms are arranged along the length of the transport mechanism, which results in the automatic sealing mechanism occupying a large space, leading to low factory space utilization and increased costs.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a paper bag sealing mechanism, which aims to solve the problems of large space occupation, low factory space utilization and increased costs caused by the automatic sealing equipment in the prior art.

[0006] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0007] A paper bag sealing mechanism, comprising:

[0008] Frame; a conveyor belt is installed on the frame;

[0009] The bracket is mounted on the frame.

[0010] A detection component, mounted on the bracket, is used to detect paper bags;

[0011] An automatic bag-folding assembly is vertically slidably mounted on the bracket for performing the first fold of the paper bag;

[0012] A labeling component, located on top of the automatic bag folding component, is used for a second fold of the paper bag and for labeling.

[0013] A drive assembly is disposed at the top of the bracket; the drive assembly cooperates with the automatic bag folding assembly to drive the automatic bag folding assembly and the labeling assembly to slide vertically along the bracket.

[0014] Furthermore, the support includes:

[0015] Two base plates are mounted on the frame and located on both sides of the conveyor belt, respectively.

[0016] Multiple guide rods are respectively disposed on the two base plates; the automatic bag folding assembly is slidably engaged with the guide rods.

[0017] A top plate is disposed on top of the guide rod; the drive assembly is located on the top plate.

[0018] Furthermore, the detection component includes:

[0019] Two detection sensors are respectively mounted on the two base plates; the two detection sensors are arranged diagonally.

[0020] Furthermore, the automatic bag folding assembly includes:

[0021] Two sliding plates are symmetrically slidably mounted on the guide rod;

[0022] Two fixing plates are disposed at the bottom of the two sliding plates to connect the two sliding plates;

[0023] Two adjusting plates are symmetrically arranged at the bottom of the sliding plate; both adjusting plates are located between the two fixed plates, and multiple suction cups are provided on opposite sides of the two adjusting plates for fixing the paper bag.

[0024] An adjustable L-shaped plate, one end of which is located on one side of the adjusting plate and the other end of which is located on one side of the fixed plate; the two fixed plates and the two adjusting plates cooperate to form a receiving cavity;

[0025] Two first cylinders are respectively mounted on the two sliding plates; each of the extended ends of the two first cylinders is provided with a folding plate.

[0026] Furthermore, two mating grooves are symmetrically arranged on one side of the fixing plate, and multiple threaded holes are spaced apart in the mating grooves. The mating grooves mate with the adjustable L-shaped plate, and the adjustable L-shaped plate is provided with a countersunk hole. A first bolt is provided in the countersunk hole, and the first bolt mates with the threaded hole.

[0027] Furthermore, the labeling component includes:

[0028] A flat plate is slidably disposed on top of the two sliding plates; the flat plate cooperates with the paper bag to perform a second folding of the paper bag;

[0029] A first motor is disposed on the top of the sliding plate; the first motor drives the plate to move through a transmission assembly;

[0030] An inclined plate is disposed on the top of the flat plate; a label roll is rotatably disposed at one end of the inclined plate, and a rotating roller is disposed at the other end; a guide plate is disposed between the label roll and the rotating roller, and the roll of the label roll is wound onto the rotating roller through the guide plate;

[0031] The second cylinder is disposed on the inclined plate and located between the label roll and the rotating roller; a slot is provided in the middle of the guide plate, and a label printing rod is provided at the extended end of the second cylinder, the label printing rod corresponding to the slot;

[0032] A second motor is mounted on the inclined plate; the second motor cooperates with the rotating roller to drive the rotating roller to rotate.

[0033] Furthermore, a labeling opening is provided on one side of the flat plate, and the label printing rod corresponds to the labeling opening.

[0034] Furthermore, the transmission assembly includes:

[0035] A rack is disposed at one end of the flat plate;

[0036] The drive gear is coaxially mounted on the output shaft of the first motor; the rack meshes with the drive gear.

[0037] Furthermore, the driving component includes:

[0038] The third motor is located at the top of the top plate;

[0039] A rotating shaft is rotatably mounted at the bottom of the top plate; a drive pulley is mounted on the output shaft of the third motor, and a synchronous pulley is coaxially mounted on the rotating shaft; the drive pulley and the synchronous pulley are connected by a synchronous belt.

[0040] Two winding wheels are respectively disposed at both ends of the rotating shaft; guide wheels are disposed on both sides of the winding wheels, and the guide wheels are rotatably disposed at the bottom of the top plate;

[0041] A pull cord, one end of which is set on the winding wheel, and the other end of which is set on the automatic bag folding assembly via the guide wheel.

[0042] Furthermore, the folding plate is a triangular plate, and the triangular plate forms a certain angle with the first cylinder.

[0043] Compared with the prior art, the beneficial effects of this utility model are:

[0044] In this invention, a conveyor belt and a support frame are provided on the frame. A detection component is installed on the support frame for detecting paper bags. An automatic bag-folding component is vertically slidable on the support frame for performing the first fold of the paper bag. A labeling component is installed on top of the automatic bag-folding component for performing the second fold and labeling of the paper bag. A drive component is installed on top of the support frame, cooperating with the automatic bag-folding component to drive both the automatic bag-folding component and the labeling component to slide vertically along the support frame. By setting up the support frame and vertically mounting the automatic bag-folding component, labeling component, and drive component on the support frame, the space occupied by the sealing mechanism can be effectively reduced, thereby improving the space utilization rate of the factory area and reducing costs. Simultaneously, by driving the automatic bag-folding component and labeling component to slide vertically, the automatic bag-folding component and labeling component can also seal paper bags of different heights, improving the applicability of the sealing mechanism. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0046] Figure 2 This is a schematic diagram of the support structure of this utility model.

[0047] Figure 3 This is a schematic diagram of the automatic bag folding component of this utility model.

[0048] Figure 4 for Figure 3 Enlarged diagram of point A in the diagram.

[0049] Figure 5 This is a schematic diagram of the labeling component structure of this utility model.

[0050] Figure 6 This is a schematic diagram of the drive component structure of this utility model.

[0051] Figure 7 This is a schematic diagram of the first cylinder and folding plate structure of this utility model.

[0052] The numbers in the diagram represent: 1. Frame; 11. Conveyor belt; 2. Support; 21. Base plate; 22. Guide rod; 23. Top plate; 3. Detection component; 4. Automatic bag folding component; 41. Sliding plate; 42. Fixing plate; 421. Mating groove; 422. Threaded hole; 43. Adjusting plate; 44. Suction cup; 45. Adjustable L-shaped plate; 451. Countersink hole; 452. First bolt; 46. First cylinder; 47. Folding plate; 5. Labeling assembly; 51. Flat plate; 52. First motor; 53. Transmission assembly; 531. Rack; 532. Drive gear; 54. Inclined plate; 55. Label roll; 56. Rotating roller; 57. Second cylinder; 58. Second motor; 59. Labeling nozzle; 6. Drive assembly; 61. Third motor; 62. Rotating shaft; 63. Drive pulley; 64. Synchronous pulley; 65. Wrapping wheel; 66. Guide wheel; 67. Pull cord; 7. Cover. Detailed Implementation

[0053] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0054] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0055] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] In view of the shortcomings of the prior art, this embodiment provides a paper bag sealing mechanism, which can be referred to as follows:

[0057] As attached Figure 1 and attached Figure 2 As shown, a paper bag sealing mechanism includes a frame 1, a support 2, a detection component 3, an automatic bag folding component 4, a labeling component 5, and a drive component 6. The frame 1 can be welded from profiles, and a conveyor belt 11 is provided on the top of the frame 1 for conveying paper bags to be sealed. The detection component 3 is provided on the support 2 and corresponds to the conveyor belt 11 for detecting paper bags on the conveyor belt 11. The automatic bag folding component 4 is vertically slidably provided on the support 2. Through sliding action, it can be directly placed on the top of the paper bag and perform the first fold of the paper bag. The labeling component 5 is provided on the top of the automatic bag folding component 4. The labeling component 5 is located above the paper bag and can perform the second fold of the paper bag. At the same time, it can also be labeled at the bag opening to close the bag opening. The drive component 6 is provided on the top of the support 2. The drive component 6 cooperates with the automatic bag folding component 4. By activating the drive component 6, the automatic bag folding component 4 and the labeling component 5 can be driven to slide vertically along the support 2, thereby performing the folding, sealing, and labeling work on the paper bag.

[0058] Specifically, the conveyor belt 11 transports the paper bags to be sealed. After the detection component 3 detects the paper bag, the conveyor belt 11 stops transporting. At this time, the drive component 6 can be started. The drive component 6 drives the automatic bag folding component 4 to be placed on top of the paper bag and folds the paper bag for the first time. Then the labeling component 5 is started. The labeling component 5 first folds the paper bag for the second time. After the folding is completed, the label is applied, and the sealing work of the paper bag is completed. Then the drive component 6 drives the automatic bag folding component 4 to rise, the conveyor belt 11 starts, and transports the next paper bag to be located below the automatic bag folding component 4 for the second sealing work.

[0059] Existing paper bag sealing equipment comprises numerous components, each requiring individual control and processing of the paper bags. This makes it difficult to stack multiple components vertically. Furthermore, the top of the bag clamping assembly in existing paper bag sealing equipment is a rotating rod, and the top is closed, preventing the integration and stacking of other components. This also prevents the vertical arrangement of multiple components in existing paper bag sealing equipment. In contrast, this application arranges multiple components vertically and seals and labels the paper bags through vertical sliding. The automatic bag folding assembly 4 has a hollow structure in the middle to accommodate the paper bags, and a labeling assembly 5 is installed on its top for bag manipulation. This effectively reduces the space occupied by the sealing mechanism, thereby improving factory space utilization and reducing costs. Simultaneously, the drive assembly 6 drives the automatic bag folding assembly 4 and the labeling assembly 5 to slide vertically, allowing sealing of paper bags of different heights and improving the applicability of the sealing mechanism.

[0060] In this embodiment, the paper bag is a rectangular paper bag with an opening at the top. The paper bag is sealed by folding the opening and attaching a label.

[0061] In this embodiment, as shown in the appendix Figure 2 As shown, the support 2 includes two base plates 21, multiple guide rods 22, and a top plate 23. The two base plates 21 are both mounted on the frame 1 and are located on both sides of the conveyor belt 11. Each base plate 21 is provided with two guide rods 22. The two guide rods 22 located on the same base plate 21 are arranged at intervals along the length of the conveyor belt 11. The automatic bag folding assembly 4 is slidably engaged with the guide rods 22. The top plate 23 is located on top of the guide rods 22, and the drive assembly 6 is located on the top plate 23.

[0062] Furthermore, the guide rod 22 is a smooth rod, and both ends of the guide rod 22 are fixed to the top plate 23 and the bottom plate 21 through the fixing seat; the multiple guide rods 22 on the two bases can provide guidance for the automatic bag folding assembly 4.

[0063] One embodiment of this application is shown in the appendix. Figure 2 As shown, the detection component 3 includes two detection sensors, which are existing technologies; preferably, the detection sensors are proximity sensors, model C-2C12-N11; the two detection sensors are respectively set on two base plates 21 and arranged diagonally, and the two detection sensors are arranged at intervals along the length direction of the conveyor belt 11.

[0064] Specifically, the position of the paper bag can be determined by two detection sensors. The first detection sensor is used to sense the paper bag. When the second detection sensor detects the paper bag, the conveyor belt 11 stops conveying, and the paper bag corresponds to the automatic folding bag assembly 4. At the same time, the position of the paper bag can be limited by adjusting the position of the two detection sensors, so as to facilitate the automatic folding bag assembly 4 to fold the paper bag.

[0065] One implementation of this application, as shown in the attached... Figure 2 and attached Figure 3As shown, the automatic bag folding assembly 4 includes two sliding plates 41, two fixed plates 42, two adjusting plates 43, an adjustable L-shaped plate 45, and two first cylinders 46. The two sliding plates 41 slide on guide rods 22 on the two bases respectively, and the two sliding plates 41 are arranged symmetrically with a clearance fit. The two fixed plates 42 are located at the bottom of the two sliding plates 41, and are located on both sides of the sliding plates 41 to connect them. Two adjusting plates 43 are arranged symmetrically between the two fixed plates 42 and are located at the bottom of the sliding plates 41. Multiple suction cups 44 are provided on both sides of the two adjusting plates 43, which are used to fix the paper bag. An adjustable L-shaped plate 45 is provided on one side of the adjusting plate 43, and the other end of the adjustable L-shaped plate 45 is connected to the fixed plate 42, so that the adjusting plate 43 and the fixed plate 42 are connected. The two fixed plates 42 and the two adjusting plates 43 cooperate to form a receiving cavity, which is used to place the paper bag. Two first cylinders 46 are respectively provided on the two sliding plates 41. The extended end of the two first cylinders 46 is provided with a folding plate 47. By activating the first cylinder 46, the folding plate 47 moves toward the paper bag and folds the paper bag.

[0066] When the paper bag is at the bottom of the two sliding plates 41, the drive assembly 6 is activated and drives the two sliding plates 41 to descend and fit onto the paper bag. The paper bag is located in the gap between the receiving cavity and the two sliding plates 41. Then, the suction cups 44 are used to attach and fix the two ends of the paper bag. Then, the two first cylinders 46 are activated, and the two first cylinders 46 drive the folding plate 47 to move toward the paper bag. The folding plate 47 folds the paper bag. After folding, the labeling assembly 5 is activated.

[0067] In this embodiment, the suction cup 44 is model C-MVBKN15, and the first cylinder 46 is model E-MCQB20-100-DC-SJ-NS.

[0068] In this embodiment, a slider is provided on the guide rod 22, and the slider cooperates with the sliding plate 41; the slider is model E-LBHNW20-P.

[0069] In this embodiment, the folding plate 47 is a triangular plate, which forms a certain angle with the upper surface of the first cylinder 46. That is, the triangular plate is inclinedly set on the extension shaft of the first cylinder 46. By squeezing the two ends of the paper bag by the triangular plate, the top of the paper bag can be formed into a conical shape, and the opening of the paper bag is closed under the action of the two side walls, thus completing the first fold.

[0070] In this embodiment, as shown in the appendix Figure 4As shown, two mating grooves 421 are symmetrically arranged on one side of the fixed plate 42. Multiple threaded holes 422 are provided in the mating grooves 421. The mating grooves 421 cooperate with the adjustable L-shaped plate 45 to facilitate the fixation of the two. The adjustable L-shaped plate 45 is provided with a countersunk hole 451. A first bolt 452 is provided in the countersunk hole 451 and cooperates with the threaded hole 422. The fixed plate 42 is in a fixed state. By cooperating the first bolt 452 with the threaded hole 422 at different positions and moving the position of the adjustable L-shaped plate 45, the distance between the two adjusting plates 43 can be adjusted, so as to be suitable for paper bags of different widths (the minimum width is 180mm, the maximum width is 295mm, and it is compatible with paper bags in the length range of 180mm-295mm).

[0071] One embodiment of this application is shown in the appendix. Figure 5 and attached Figure 7 As shown, the labeling assembly 5 includes a flat plate 51, a first motor 52, an inclined plate 54, a second cylinder 57, and a second motor 58. A slide rail is provided on the top of each of the two sliding plates 41, and sliders are provided on both sides of the bottom of the flat plate 51. The sliders cooperate with the slide rails (the sliders and slide rails form a guide rail, model C-MLG7-350), allowing the flat plate 51 to slide along the length of the sliding plate 41. The flat plate 51 cooperates with the paper bag for a second fold. The first motor 52 is located on the top of one of the sliding plates 41 and drives the flat plate 51 to move via a transmission assembly 53. An inclined plate 54 is provided on the top of the flat plate 51. A label roll 55 is rotatably mounted on one end of the inclined plate 54, and a label roll 55 is mounted on the other end. A rotating roller 56 is placed, and a guide plate is provided between the label roll 55 and the rotating roller 56. The roll of label film 55 is wound onto the rotating roller 56 through the guide plate. A second cylinder 57 is placed on an inclined plate 54 and located between the label roll 55 and the rotating roller 56. A slot is provided in the middle of the guide plate. A label printing rod is provided at the extended end of the second cylinder 57. The label printing rod corresponds to the slot. Through the first cylinder 46, the roll of paper can be brought close to the paper bag and the label on the roll of paper can be affixed to the paper bag. A second motor 58 is placed on the inclined plate 54. A first gear is provided on the output shaft of the second motor 58, and a second gear is coaxially provided on the top of the rotating roller 56. The first gear and the second gear mesh so that the second motor 58 can drive the rotating roller 56 to rotate.

[0072] In the initial state, the plate 51 is located on one side of the sliding plate 41 and is not in contact with the paper bag. When a second fold is required, the first motor 52 drives the plate 51 to move. The plate 51 moves and presses the top of the paper bag (at this time, the top of the paper bag is higher than the bottom wall of the plate 51), causing the paper bag to fold. The plate 51 continues to slide and fold the paper bag until the plate 51 slides to the other side of the paper bag. Then, the second cylinder 57 is activated. The protruding end of the second cylinder 57 abuts against the roll of paper and the surface of the roll of paper abuts against the fold of the paper bag. Since the second cylinder 57 is arranged at an angle, it can fold the second fold position again so that the top of the paper bag is folded and attached to the side wall of the paper bag and sealed by the label.

[0073] In this embodiment, the bottom of the plate 51 is flat, and a labeling opening 59 is provided on one side of the plate 51, which corresponds to the label printing rod.

[0074] Specifically, when the plate 51 moves, the top of the paper bag can be folded. In order to prevent the folded part of the paper bag from returning to its initial state or rotating to its initial state under its own force after the plate 51 passes over the paper bag, this application provides a labeling opening 59 on one side of the plate 51. The labeling process is carried out when the plate 51 folds the top of the paper bag, so as to better complete the labeling work.

[0075] In this embodiment, as shown in the appendix Figure 5 As shown, the transmission assembly 53 includes a rack 531 and a drive tooth 532. The rack 531 is disposed at one end of the plate 51, and the drive tooth 532 is coaxially disposed on the output shaft of the first motor 52. The rack 531 meshes with the drive tooth 532. By driving the first motor 52, the first motor 52 can drive the rack 531 and the plate 51 to move.

[0076] In this embodiment, the second cylinder 57 is model E-MCQB20-50-DC-SJ-NS; the first motor 52 is model MSMJ022G1V; and the second motor 58 is a stepper motor with model C-20STM03.

[0077] One embodiment of this application is shown in the appendix. Figure 6As shown, the drive assembly 6 includes a third motor 61, a rotating shaft 62, two winding wheels 65, and pull ropes 67. The third motor 61 is located at the top of the top plate 23, and the rotating shaft 62 is located at the bottom of the top plate 23. A drive pulley 63 is coaxially mounted on the output shaft of the third motor 61, and a synchronous pulley 64 is coaxially mounted on the rotating shaft 62. The drive pulley 63 and the synchronous pulley 64 are connected by a synchronous belt, thereby causing the third motor 61 to drive the rotating shaft 62 to rotate. The two winding wheels 65 are respectively located at both ends of the rotating shaft 62, and guide wheels 66 are located on both sides of the winding wheels 65. The guide wheels 66 are rotatably located at the bottom of the top plate 23, that is, four guide wheels 66 are located on both sides of the two winding wheels 65. Two pull ropes 67 are mounted on the winding wheels 65. The same end of the two pull ropes 67 is mounted on the winding wheel 65, and the other end of the two pull ropes 67 is mounted on the sliding plate 41 of the automatic bag folding assembly 4 through the corresponding guide wheels 66.

[0078] In the initial state, the pull rope 67 is wound on the winding wheel 65, and the sliding plate 41 is located on top of the paper bag. When the sliding plate 41 needs to be lowered, the third motor 61 is started. The third motor 61 rotates, which drives the rotating shaft 62 and the two winding wheels 65 to rotate. The winding wheel 65 loosens the pull rope 67, and the sliding plate 41 also descends under the action of gravity until it is fitted onto the paper bag. The third motor 61 then stops rotating. When the sliding plate 41 needs to be raised, the third motor 61 reverses, which drives the winding wheel 65 to rotate. The winding wheel 65 winds the pull rope 67, thereby causing the sliding plate 41 to rise.

[0079] In this embodiment, the guide wheel 66 is model CHC41-D30-MA, the guide rod 22 is model E-PSFG20-800, the pull rope 67 is model CWAB10-500, the fixing seat on the guide rod 22 is model BGHFB6000DD-40, and the third motor 61 is model MSMJ022G1V.

[0080] In this embodiment, a cover 7 is also provided on the frame 1. The cover 7 is fitted onto the bracket 2 and serves as a protective element.

[0081] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

Claims

1. A paper bag sealing mechanism, characterized in that, include: Frame; a conveyor belt is installed on the frame; The bracket is mounted on the frame. A detection component, mounted on the bracket, is used to detect paper bags; An automatic bag-folding assembly is vertically slidably mounted on the bracket for performing the first fold of the paper bag; A labeling component, located on top of the automatic bag folding component, is used for a second fold of the paper bag and for labeling. A drive assembly is disposed at the top of the bracket; the drive assembly cooperates with the automatic bag folding assembly to drive the automatic bag folding assembly and the labeling assembly to slide vertically along the bracket.

2. The paper bag sealing mechanism according to claim 1, characterized in that, The support includes: Two base plates are mounted on the frame and located on both sides of the conveyor belt, respectively. Multiple guide rods are respectively disposed on the two base plates; the automatic bag folding assembly is slidably engaged with the guide rods. A top plate is disposed on top of the guide rod; the drive assembly is located on the top plate.

3. The paper bag sealing mechanism according to claim 2, characterized in that, The detection component includes: Two detection sensors are respectively mounted on the two base plates; the two detection sensors are arranged diagonally.

4. A paper bag sealing mechanism according to claim 2, characterized in that, The automatic bag folding assembly includes: Two sliding plates are symmetrically slidably mounted on the guide rod; Two fixing plates are disposed at the bottom of the two sliding plates to connect the two sliding plates; Two adjusting plates are symmetrically arranged at the bottom of the sliding plate; both adjusting plates are located between the two fixed plates, and multiple suction cups are provided on opposite sides of the two adjusting plates for fixing the paper bag. An adjustable L-shaped plate, one end of which is located on one side of the adjusting plate and the other end of which is located on one side of the fixed plate; the two fixed plates and the two adjusting plates cooperate to form a receiving cavity; Two first cylinders are respectively mounted on the two sliding plates; each of the extended ends of the two first cylinders is provided with a folding plate.

5. A paper bag sealing mechanism according to claim 4, characterized in that, Two mating grooves are symmetrically arranged on one side of the fixed plate. Multiple threaded holes are arranged at intervals in the mating grooves. The mating grooves mate with the adjustable L-shaped plate. The adjustable L-shaped plate is provided with a countersunk hole. A first bolt is arranged in the countersunk hole and mates with the threaded hole.

6. A paper bag sealing mechanism according to claim 4, characterized in that, The labeling component includes: A flat plate is slidably disposed on top of the two sliding plates; the flat plate cooperates with the paper bag to perform a second folding of the paper bag; A first motor is disposed on the top of the sliding plate; the first motor drives the plate to move through a transmission assembly; An inclined plate is disposed on the top of the flat plate; a label roll is rotatably disposed at one end of the inclined plate, and a rotating roller is disposed at the other end; a guide plate is disposed between the label roll and the rotating roller, and the roll of the label roll is wound onto the rotating roller through the guide plate; The second cylinder is disposed on the inclined plate and located between the label roll and the rotating roller; a slot is provided in the middle of the guide plate, and a label printing rod is provided at the extended end of the second cylinder, the label printing rod corresponding to the slot; A second motor is mounted on the inclined plate; the second motor cooperates with the rotating roller to drive the rotating roller to rotate.

7. A paper bag sealing mechanism according to claim 6, characterized in that, The flat plate has a labeling opening on one side, and the label printing rod corresponds to the labeling opening.

8. A paper bag sealing mechanism according to claim 6, characterized in that, The transmission assembly includes: A rack is disposed at one end of the flat plate; The drive gear is coaxially mounted on the output shaft of the first motor; the rack meshes with the drive gear.

9. A paper bag sealing mechanism according to claim 2, characterized in that, The driving component includes: The third motor is located at the top of the top plate; A rotating shaft is rotatably mounted at the bottom of the top plate; a drive pulley is mounted on the output shaft of the third motor, and a synchronous pulley is coaxially mounted on the rotating shaft; the drive pulley and the synchronous pulley are connected by a synchronous belt. Two winding wheels are respectively disposed at both ends of the rotating shaft; guide wheels are disposed on both sides of the winding wheels, and the guide wheels are rotatably disposed at the bottom of the top plate; A pull cord, one end of which is set on the winding wheel, and the other end of which is set on the automatic bag folding assembly via the guide wheel.

10. A paper bag sealing mechanism according to claim 4, characterized in that, The folding plate is a triangular plate, and the triangular plate forms a certain angle with the first cylinder.

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