A valve bag sleeving machine

Abstract

The present invention relates to the technical field of packaging, and specifically relates to a valve bag sleeving machine, which includes a frame, a bag opening mechanism and a bag sleeving mechanism. A discharge nozzle is arranged near one side of the frame. A placement plate is fixedly arranged on the frame, and a valve bag is placed on the placement plate. The bag opening mechanism includes a fixed seat, a suction plate and a mounting shaft. Clamping plates are arranged on the frame, and there are two corresponding clamping plates. The bag body is located between the two clamping plates, and the two clamping plates clamp the bag body. The bag sleeving mechanism includes a guard plate, a mounting seat and a mounting plate. A fifth cylinder is vertically and fixedly arranged on the sliding seat. A moving component for moving the sliding seat is arranged on the mounting plate. When the mounting seat slides to the upper part of the valve bag, the two guard plates respectively hold the two lower bag mouth edges and then move towards the side of the discharge nozzle until the bag mouth of the valve bag is sleeved on the discharge nozzle. The present invention has the effect of reducing the labor intensity.

Description

Technical Field

[0001] The invention relates to the technical field of packaging, in particular to a valve bag bagging machine. Background Art

[0002] Valve bags are a common type of packaging bag and an internationally popular packaging bag. They are fed from the top or bottom valve port and use special filling equipment. After filling the materials, they are packed into cubes. The bags are neatly stacked and beautiful. They are environmentally friendly bags. When filling valve bags, filling mechanisms are usually used for filling.

[0003] Publication number CN2844005Y discloses an airbag sealing device for a valve bag filling port, comprising an airbag sleeve fixed on the outer wall of the valve bag filling port of a discharge pipe 3 of a filling machine for conveying materials into the valve bag; an air inlet pipe, one end of which extends into the tube cavity of the discharge pipe and communicates with the bag cavity of the airbag sleeve, and the other end is connected to a compressed air supply mechanism. It can be seen from the description in the last paragraph on page 3 of the patent specification that when the valve bag is to be filled, a worker manually places the bag mouth sleeve of the valve bag on the discharge nozzle of the discharge device of the filling mechanism (referred to as the discharge port of the discharge pipe in the patent).

[0004] For the above technical conditions, the staff is required to open the feed port of the valve bag to put the valve bag on the discharge nozzle, which is a cumbersome process and causes the defect of increased workload of the staff.

[0005] Based on this, the present invention designs a valve bag bagging machine to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a valve bag bagging machine to solve the above technical problems.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a valve bag bagging machine, comprising a frame, a bag opening mechanism and a bagging mechanism, a discharging nozzle is arranged near one side of the frame, a placing plate is fixedly arranged on the frame, a valve bag is placed on the placing plate, the valve bag comprises a bag body, an upper bag opening edge, and a lower bag opening edge, two of the upper bag opening edges are arranged, and two of the lower bag opening edges are arranged, the bag opening mechanism comprises a fixed seat, an adsorption plate, and a mounting shaft, a connecting seat is slidably arranged on the fixed seat, a lifting device for driving the connecting seat to rise and fall is arranged on the fixed seat, the mounting shaft is arranged on the connecting seat, the adsorption plate is arranged on the mounting shaft, and two adsorption plates are correspondingly arranged on the mounting shaft, two The adsorption plates are respectively adsorbed on the two upper bag opening edges, and the frame is provided with a clamping plate, and two of the clamping plates are correspondingly provided. The bag body is located between the two clamping plates, and the two clamping plates clamp the bag body. The bagging mechanism includes a guard plate, a mounting seat, and a mounting plate. A sliding seat is slidably provided on the mounting plate, and a fifth cylinder is vertically fixed on the sliding seat. A moving component for moving the sliding seat is provided on the mounting plate, and the guard plate is provided on the mounting seat, and two of the guard plates are correspondingly provided. When the mounting seat slides to the top of the valve bag, the two guard plates respectively drag the two lower bag opening edges, and then move toward the side of the discharge nozzle until the bag opening of the valve bag is sleeved on the discharge nozzle.

[0008] By adopting the above technical scheme, when the valve bag is bagged and loaded, the two clamping plates will clamp the bag body, and then the two adsorption plates will be adsorbed on the two upper bag edges, so that the two upper edges and the two lower edges are separated from each other to form a bag opening, and then the two lower bag edges are supported by the protective plate, and the bag opening is then put on the discharge spout, without manual bag opening and bagging, thereby achieving the effect of reducing labor.

[0009] Preferably, a resisting plate is fixedly provided on the guard plate, and when the guard plate contacts the lower bag opening edge, the resisting plate resists the connection between the upper bag opening edge and the lower bag opening edge.

[0010] By adopting the above technical solution, the abutment plate abuts against the connection part, which can ensure that the bag opening is in an open state, thereby achieving the effect of reducing the closure of the bag opening.

[0011] Preferably, a placing seat is provided on the connecting seat, and a first rotating plate and a second rotating plate are rotatably provided on the mounting shaft, wherein one of the adsorption plates is fixedly provided on the first rotating plate, and the other of the adsorption plates is fixedly provided on the second rotating plate, a first toggle rod is fixedly provided on the first rotating plate, and a second toggle rod is fixedly provided on the second rotating plate, a first cylinder is vertically fixedly provided on the placing seat, a resistance block is fixedly provided on the telescopic shaft of the first cylinder, the resistance block resists on the first toggle rod and the second toggle rod, and the resistance block is located between the first toggle rod and the second toggle rod.

[0012] By adopting the above technical solution, when the adsorption plates adsorb the edges of the two upper bag mouths, the first cylinder is driven to make the abutting block abut against the first and second toggle rods to rotate, so that the two adsorption plates are respectively opened, and the edges of the two upper bag mouths are pulled apart, achieving the effect of improving the opening of the bag mouth.

[0013] Preferably, a guiding plate is fixedly arranged on the placing plate. The guiding plate is an arc-shaped plate. The valve bag is in contact with the side wall of the guiding plate. The guiding plate is located below the clamping plate. After passing through the guiding plate, a part of the bag body of the valve bag is in a erected state.

[0014] By adopting the above technical solution, the guiding plate can guide the valve bag to move, making a part of the bag body of the valve bag in an erected state, thus facilitating the clamping plate to clamp the bag body.

[0015] Preferably, a transmission groove is formed on the placing plate. A conveyor belt is arranged in the transmission groove in a transmission manner. A pushing plate is arranged on the placing plate. The pushing plate is fixedly connected to the conveyor belt. A baffle is fixedly arranged on the placing plate. The pushing plate pushes the valve bag on the placing plate to move towards the baffle side.

[0016] By adopting the above technical solution, the valve bag is conveyed to the working station through the conveyor belt, which can facilitate the feeding of the valve bag and improve the production efficiency.

[0017] Preferably, a pushing mechanism is arranged on the placing plate. The pushing mechanism includes a second cylinder and a pushing plate. The second cylinder is fixedly arranged on the placing plate. The pushing plate is fixedly arranged on the telescopic shaft of the second cylinder. The pushing plate pushes the valve bag on the placing plate to move towards the guiding plate side.

[0018] By adopting the above technical solution, when one side of the valve bag contacts the baffle, the pushing plate pushes the valve bag towards the guiding plate side until a part of the bag body of the valve bag is in an erected state, and then the pushing stops, achieving the effect of facilitating the contact between the valve bag and the guiding plate.

[0019] Preferably, a buffer block is fixedly arranged on the clamping plate. The buffer block abuts against the bag body.

[0020] By adopting the above technical solution, the buffer block can buffer the bag body and reduce the damage to the bag body.

[0021] In summary, the present application has the following beneficial technical effects: when the valve bag is sleeved and filled, the two clamping plates clamp the bag body, the two adsorption plates adsorb on the edges of the two upper bag mouths, the two upper bag mouth edges and the two lower bag mouth edges are separated from each other to form a bag mouth, and then the two lower bag mouth edges are supported by the guard plate, and the bag mouth is sleeved on the discharge nozzle, without manual bag opening and bag sleeving, achieving the effect of reducing the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the rack in this embodiment;

[0024] Figure 2 It is a top view of the rack in this embodiment;

[0025] Figure 3 It is a schematic diagram of the installation of the third cylinder in this embodiment;

[0026] Figure 4 It is a schematic diagram of the structure of the guide plate in this embodiment;

[0027] Figure 5 It is a schematic diagram of the structure of the bag-opening mechanism in this embodiment;

[0028] Figure 6 For Figure 5 an enlarged schematic diagram of A in;

[0029] Figure 7 It is a schematic diagram of the structure of the bag-sleeving mechanism in this embodiment;

[0030] Figure 8 For Figure 7 an enlarged schematic diagram of B in;

[0031] Figure 9 It is a schematic diagram of the principle of clamping of the guard plate in this embodiment;

[0032] Figure 10 It is a schematic diagram when the bag-sleeving mechanism transfers the valve bag in this embodiment;

[0033] Figure 11 It is a schematic diagram of the overall structure of the bag body in this embodiment;

[0034] Figure 12 It is a schematic diagram of the structure when the bag mouth is opened in this embodiment;

[0035] Figure 13 It is a schematic diagram of the structure when the valve bag moves in this embodiment.

[0036] In the drawings, the list of components represented by each reference numeral is as follows:

[0037] 1. Frame; 2. Bag opening mechanism; 3. Bag putting mechanism; 4. Placement plate; 5. Valve bag; 6. Bag body; 7. Upper bag opening edge; 8. Lower bag opening edge; 9. Transmission groove; 10. Conveying bag; 11. Pushing plate; 12. Baffle plate; 13. Guide plate; 14. Second cylinder; 15. Pushing plate; 16. Fixed seat; 17. Adsorption plate; 18. Mounting shaft; 19. Connecting seat; 20. First motor; 21. First gear; 22. Second gear; 23. First toothed belt; 24. Placement seat; 25. Vertical plate; 26. First rotating plate; 27. 2. The second rotating plate; 28. The first toggle rod; 29. ​​The second toggle rod; 30. The first cylinder; 31. The resistance block; 32. The third cylinder; 33. The clamping plate; 34. The guard plate; 35. The mounting seat; 36. The mounting plate; 37. The second motor; 38. The third gear; 39. The fourth gear; 40. The second toothed belt; 41. The sliding seat; 42. The fifth cylinder; 43. The mounting frame; 44. The connecting shaft; 45. The rotating rod; 46. The fourth cylinder; 47. The mounting block; 48. The connecting rod; 49. The resistance plate; 50. The buffer block; 51. The discharge nozzle. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The following is combined with Figure 1-13 This application is described in further detail.

[0040] A valve bag bagging machine comprises a frame 1, a bag opening mechanism 2 and a bagging mechanism 3. A discharge nozzle 51 for storing materials is arranged near one side of the frame 1, and the materials to be bagged flow out through the discharge nozzle 51. A placing plate 4 is fixedly arranged on the frame 1, and a valve bag 5 is placed on the placing plate 4. The valve bag 5 comprises a bag body 6, an upper bag opening edge 7, and a lower bag opening edge 8. Two upper bag opening edges 7 are arranged, and two lower bag opening edges 8 are arranged. The lower bag opening edge 8 is fixedly arranged on the bag body 6.

[0041] The placing plate 4 is provided with a transmission groove 9, and a conveyor belt is provided in the transmission groove 9. The placing plate 4 is provided with a push plate 11, which is fixedly connected to the conveying bag 10. The placing plate 4 is fixedly provided with a baffle plate 12, and the push plate 11 pushes the valve bag 5 to move toward the side of the baffle plate 12 until the valve mouth belt contacts the side wall of the baffle plate 12. The placing plate 4 is fixedly provided with a guide plate 13, which is an arc-shaped plate. The placing plate 4 is provided with a push mechanism, which includes a second cylinder 14 and a push plate 15. The second cylinder 14 is fixedly provided on the placing plate 4, and the push plate 15 is fixedly provided on the telescopic shaft of the second cylinder 14. The push plate 15 pushes the valve bag 5 on the placing plate 4 to move toward the side of the guide plate 13. The valve bag 5 contacts the side wall of the guide plate 13, and the push plate 15 continuously pushes the valve bag 5 to move. At the same time, under the guidance of the guide plate 13, the upper bag opening edge 7 of the valve bag 5 moves upward, so that part of the bag body 6 is in an upright state.

[0042] The bag opening mechanism 2 includes a fixed seat 16, an adsorption plate 17, and a mounting shaft 18. A connecting seat 19 is slidably arranged on the fixed seat 16. A lifting device for driving the connecting seat 19 to rise and fall is arranged on the fixed seat 16. The lifting device includes a first motor 20, a first gear 21, and a second gear 22 arranged on the frame 1. The first motor 20 is fixedly arranged on the fixed seat 16, the first gear 21 is coaxially fixedly arranged on the rotating shaft of the first motor 20, and the second gear 22 is rotatably arranged on the frame 1. A first toothed belt 23 meshing with each other is sleeved between the first gear 21 and the second gear 22, and the connecting seat 19 is fixedly arranged on the first toothed belt 23.

[0043] A placing seat 24 is fixedly arranged on the connecting seat 19, a vertical plate 25 is fixedly arranged on the placing seat 24, the mounting shaft 18 is fixedly arranged on the vertical plate 25, the adsorption plate 17 is arranged on the mounting shaft 18, two adsorption plates 17 are correspondingly arranged on the mounting shaft 18, and a first rotating plate 26 and a second rotating plate 27 are rotatably arranged on the mounting shaft 18, one of the adsorption plates 17 is fixedly arranged on the first rotating plate 26, and the other adsorption plate 17 is fixedly arranged on the second rotating plate 27. A first toggle rod 28 is fixedly provided on the first rotating plate 26, a second toggle rod 29 is fixedly provided on the second rotating plate 27, a first cylinder 30 is vertically fixedly provided on the placement seat 24, a resistance block 31 is fixedly provided on the telescopic shaft of the first cylinder 30, the resistance block 31 is a wedge-shaped block, the resistance block 31 abuts on the first toggle rod 28 and the second toggle rod 29, the resistance block 31 is located between the first toggle rod 28 and the second toggle rod 29, when the telescopic shaft of the first cylinder 30 is extended, the resistance block 31 abuts on the first toggle rod 28 and the second toggle rod 29 to rotate, so that the first toggle rod and the second toggle rod 29 are opened.

[0044] A third cylinder 32 is fixedly arranged on the frame 1. A clamping plate 33 is fixedly arranged on the telescopic shaft of the third cylinder 32. There are two corresponding clamping plates 33, and the bag body 6 is located between the two clamping plates 33. The bag sleeving mechanism 3 includes a guard plate 34, a mounting seat 35, and a mounting plate 36. The mounting plate 36 is fixedly arranged on the frame 1. A moving component for moving the mounting seat 35 is arranged on the mounting plate 36. The moving component includes a second motor 37, a third gear 38, and a fourth gear 39. The second motor 37 is fixedly arranged on the mounting plate 36. The third gear 38 is coaxially and fixedly arranged on the rotating shaft of the second motor 37. A second toothed belt 40 engaged with each other is arranged between the third gear 38 and the fourth gear 39. A sliding seat 41 is fixedly arranged on the second toothed belt 40. A fifth cylinder 42 is vertically and fixedly arranged on the sliding seat 41. The mounting seat 35 is fixedly arranged on the telescopic shaft of the fifth cylinder.

[0045] A mounting frame 43 is fixedly arranged on the sliding seat 41. A connecting shaft 44 is fixedly arranged on the mounting frame 43. A rotating rod 45 is rotatably arranged on the connecting shaft 44. The guard plate 34 is fixedly arranged on the rotating rod 45. A fourth cylinder 46 is fixedly arranged on the mounting seat 35. A mounting block 47 is fixedly arranged on the telescopic shaft of the fourth cylinder 46. A connecting rod 48 is rotatably arranged on the mounting block 47. The connecting rod 48 is rotatably connected to the rotating rod 45. There are two corresponding guard plates 34. In this embodiment, the connecting rods 48 on the two guard plates 34 are rotatably connected to the same mounting block 47. When the mounting block 47 moves upward, the two guard plates 34 approach each other. When the mounting block 47 moves downward, the two guard plates 34 move away from each other.

[0046] When the valve bag 5 is loaded, the valve bag 5 is conveyed to the placement plate 4 through the conveyor belt, and one side of the valve bag 5 contacts the baffle 12; then the second cylinder 14 is driven, so that the push plate 15 pushes the valve bag 5 to move towards the guide plate 13. When the push plate 15 continuously pushes the valve bag 5, under the guidance of the guide plate 13, part of the bag body 6 is erected, and at the same time the lower bag mouth edge 8 is separated from the contact with the guide plate 13; the telescopic shaft of the third cylinder 32 is extended to clamp the part of the bag body 6 that does not contact the guide plate 13 with two clamping plates 33, and then the lifting device is driven to lower the connecting seat 19 so that the adsorption plate 17 approaches the upper bag mouth edge 7. At the same time, the first cylinder 30 is driven to lower the abutting block 31 to abut against the first toggle lever 28 and the second toggle lever 29, so that the two adsorption plates 17 face the two upper bag mouth edges 7 respectively; when the two adsorption plates 17 adsorb on the two upper bag mouth edges 7, the connecting seat 19 stops descending. At this time, the first cylinder 30 is driven to continue to lower the abutting block 31, so that the first toggle lever 28 and the second toggle lever 29 are opened, and the two adsorption plates 17 move away from each other. At this time, the adsorption plates 17 adsorb the two upper bag mouth edges 7 and move away from each other and open. Since the clamping plates 33 press against the bag body 6, the upper bag mouth edge 7 and the lower bag mouth edge 8 are separated from each other, and a quadrilateral bag mouth is formed between the lower bag mouth edge 8 and the upper bag mouth edge 7; then the second motor 37 is driven to move the mounting seat 35 towards the adsorption plate 17 until the guard plate 34 is completely below the two lower bag mouth edges 8, and the mounting seat 35 stops moving; the fifth cylinder 42 is driven to raise the mounting seat 35, and at the same time the fourth cylinder 46 is driven to move the two guard plates 34 closer to each other to clamp the bag body 6. At this time, the two adsorption plates 17 are located between the two guard plates 34; then the third cylinder 32 is driven to separate the clamping plates 33 from the contact with the bag body 6, and at the same time the two adsorption plates 17 are closed to separate the upper bag mouth edge 7 from the adsorption plate 17; then the first motor 20 is driven to raise the connecting seat 19, and at the same time the fourth cylinder 46 is driven to clamp the bag body 6 that does not contact the guide plate 13 with the two guard plates 34, and then the fifth cylinder 42 is driven to raise the guard plate 34. At this time, the two guard plates 34 clamp the bag body 6 and raise the entire bag body 6 to finally separate the bag body from the contact with the baffle 12; finally, the second motor 37 is driven to move the sliding seat 41 towards the discharge nozzle 51, so that the bag mouth is sleeved on the discharge nozzle 51 for loading. Manual bag opening and bag sleeving are required to reduce the labor intensity.

[0047] Abutting plates 49 are fixedly arranged on the guard plates 34. When the guard plates 34 contact the lower bag mouth edge 8, the abutting plates 49 abut against the connection between the upper bag mouth edge 7 and the lower bag mouth edge 8. When the guard plates 34 hold the two lower bag mouth edges 8, the two abutting plates 49 can squeeze the two connections to ensure that the two upper bag mouth edges 7 and the two lower bag mouth edges 8 are in an open state and the bag mouth is stably opened.

[0048] A buffer block 50 is fixedly arranged on the clamping plate 33. The buffer block 50 abuts against the bag body 6. The buffer block 50 is a rubber soft block. The buffer block 50 can buffer the bag body 6, reduce the damage to the bag body 6 and further clamp the bag body 6 at the same time.

[0049] The implementation principle of this embodiment is as follows: When the valve pocket 5 is loaded, the valve pocket 5 is conveyed to the placing plate 4 through the conveyor belt, and one side of the valve pocket 5 is made to contact the baffle 12; then the second cylinder 14 is driven, so that the push plate 15 pushes the valve pocket 5 to move towards the guide plate 13. When the push plate 15 continuously pushes the valve pocket 5, under the guidance of the guide plate 13, part of the bag body 6 is in an erected state, and at the same time the lower bag mouth edge 8 is separated from the contact with the guide plate 13; the telescopic shaft of the third cylinder 32 is driven to extend, so that the two clamping plates 33 clamp the part of the bag body 6 that is not in contact with the guide plate 13, and then the lifting device is driven to lower the connecting seat 19, so that the adsorption plate 17 approaches the upper bag mouth edge 7. At the same time, the first cylinder 30 is driven, so that the abutting block 31 moves downward to abut against the first toggle lever 28 and the second toggle lever 29, so that the two adsorption plates 17 face the two upper bag mouth edges 7 respectively; when the two adsorption plates 17 adsorb on the two upper bag mouth edges 7, the connecting seat 19 stops moving downward. At this time, the first cylinder 30 is driven, so that the abutting block 31 continues to move downward, so that the first toggle lever 28 and the second toggle lever 29 are opened, and the two adsorption plates 17 move away from each other. At this time, the adsorption plates 17 adsorb the two upper bag mouth edges 7 to move away from each other and open. Since the clamping plate 33 presses against the bag body 6, the upper bag mouth edge 7 and the lower bag mouth edge 8 are moved away from each other, and a quadrilateral bag mouth is formed between the lower bag mouth edge 8 and the upper bag mouth edge 7; then the second motor 37 is driven, so that the mounting seat 35 moves towards the adsorption plate 17 until the guard plate 34 is completely located below the two lower bag mouth edges 8, and the mounting seat 35 stops moving; the fifth cylinder 42 is driven, so that the mounting seat 35 rises, and at the same time the fourth cylinder 46 is driven, so that the two guard plates 34 approach each other, so that the two guard plates 34 hold the two lower bag mouth edges 8. At this time, the two adsorption plates 17 are located between the two guard plates 34; then the third cylinder 32 is driven, so that the clamping is separated from the contact with the bag body 6, and at the same time the two adsorption plates 17 are closed, so that the upper bag mouth edge 7 is separated from the adsorption plate 17; then the first motor 20 is driven to raise the connecting seat 19, and at the same time the fifth cylinder 42 is driven to raise the guard plate 34. The guard plate 34 holds the lower bag mouth edge 8 to raise the entire bag body 6, and finally it is separated from the contact with the baffle 12; finally, the second motor 37 is driven, so that the sliding seat 41 moves towards the discharge nozzle 51, so that the bag mouth is sleeved on the discharge nozzle 51 for loading. Manual bag opening and bag sleeving are required to achieve the effect of reducing the labor intensity.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0051] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve bag sleeving machine, characterized in that: The invention comprises a frame (1), a bag opening mechanism (2) and a bagging mechanism (3), wherein a discharge nozzle (51) is arranged near one side of the frame (1), a placement plate (4) is fixedly arranged on the frame (1), a valve bag (5) is placed on the placement plate (4), the valve bag (5) comprises a bag body (6), an upper bag opening edge (7) and a lower bag opening edge (8), two upper bag opening edges (7) are arranged, and two lower bag opening edges (8) are arranged, the bag opening mechanism (2) comprises a fixed seat (16), an adsorption plate (17) and an installation shaft (18), a connecting seat (19) is slidably arranged on the fixed seat (16), a lifting device for driving the connecting seat (19) to rise and fall is arranged on the fixed seat (16), and the installation shaft (18) ) is arranged on a connecting seat (19), the adsorption plate (17) is arranged on a mounting shaft (18), two adsorption plates (17) are arranged on the mounting shaft (18), the two adsorption plates (17) are respectively adsorbed on two upper bag opening edges (7), a clamping plate (33) is arranged on the frame (1), two clamping plates (33) are arranged, the bag body (6) is located between the two clamping plates (33), the two clamping plates (33) clamp the bag body (6), the bagging mechanism (3) includes a guard plate (34), a mounting seat (35), and a mounting plate (36), a sliding seat (41) is slidably provided on the mounting plate (36), and a fifth cylinder (41) is vertically fixedly provided on the sliding seat (41) 2), a moving assembly for moving the sliding seat (41) is arranged on the mounting plate (36), the guard plate (34) is arranged on the mounting seat (35), and two guard plates (34) are arranged accordingly. When the mounting seat (35) slides to the top of the valve bag (5), the two guard plates (34) respectively support the two lower bag opening edges (8), and then move toward the side of the discharge nozzle (51) until the bag opening of the valve bag (5) is sleeved on the discharge nozzle (51), and a contact plate (49) is fixedly arranged on the guard plate (34). When the guard plate (34) contacts the lower bag opening edge (8), the contact plate (49) contacts the connection between the upper bag opening edge (7) and the lower bag opening edge (8), and the connection seat (19) is A placement seat (24) is provided, a first rotating plate (26) and a second rotating plate (27) are rotatably provided on the installation shaft (18), one of the adsorption plates (17) is fixedly provided on the first rotating plate (26), and the other adsorption plate (17) is fixedly provided on the second rotating plate (27), a first toggle rod (28) is fixedly provided on the first rotating plate (26), and a second toggle rod (29) is fixedly provided on the second rotating plate (27), a first cylinder (30) is vertically fixedly provided on the placement seat (24), a contact block (31) is fixedly provided on the telescopic shaft of the first cylinder (30), and the contact block (31) contacts the first toggle rod (28) and the second toggle rod (29),The abutment block (31) is located between the first toggle rod (28) and the second toggle rod (29). A guide plate (13) is fixedly provided on the placement plate (4). The guide plate (13) is an arc-shaped plate. The valve bag (5) contacts the side wall of the guide plate (13). The guide plate (13) is located below the clamping plate (33). After the valve bag (5) passes through the guide plate (13), a part of the bag body (6) is in an upright state. A transmission groove (9) is provided on the placement plate (4). A conveyor belt is provided in the transmission groove (9). A push plate (11) is provided on the placement plate (4). The push plate (11) is fixedly connected to the conveyor belt. A baffle plate (12) is fixedly provided on the placement plate (4). The push plate (11) pushes the valve bag (5) to move toward the side of the baffle plate (12).

2. The valve bag sleeving machine according to claim 1, wherein: A pushing mechanism is provided on the placement plate (4). The pushing mechanism includes a second air cylinder (14) and a pushing plate (15). The second air cylinder (14) is fixedly arranged on the placement plate (4), and the pushing plate (15) is fixedly arranged on the telescopic shaft of the second air cylinder (14). The pushing plate (15) pushes the valve pocket (5) on the placement plate (4) to move towards the side of the guiding plate (13).

3. The valve bag sleeving machine according to claim 1, characterized in that: A buffer block (50) is fixedly arranged on the clamping plate (33), and the buffer block (50) abuts against the bag body (6).

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