M bag opening device of bagging machine

Abstract

The utility model discloses a kind of M bag bag opening device of bagging machine, it is related to packaging machinery technical field, the utility model uses the bag opening device of double-clamp structure's bag opening mechanism to replace the bag opening device of carousel bag opening device in existing bagging machine, utilize upper bag clamp subassembly and lower bag clamp subassembly and hold the two edges of M bag side, by the relative motion of upper bag clamp subassembly and lower bag clamp subassembly, realize the opening and closing control of M bag bag mouth, can reduce the processing precision requirement to M bag, also can omit the corner device in existing bagging machine, reduce bagging machine equipment cost.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and more specifically to an M-bag supporting device for a bagging machine. Background Technology

[0002] Bagging packaging machines are used for bagging packaging of food. For example, the utility model patent with authorization announcement number CN219154893U and authorization announcement date of June 9, 2023, entitled "Bag-feeding vertical bagging machine", describes the working principle of the bagging machine as follows: the bag taking device takes out the packaging bags one by one from the bag magazine, and then the bag-feeding device opens the bag mouth and places the opened bag on the bag support device of the turntable bag support device. Then the turntable bag support device rotates, driving the packaging bag into the bottom of the filling hopper for material filling. After filling, the bag is sealed.

[0003] Currently, many food packaging bags used are M-type bags (referred to as M bags) with M-shaped folds on the sides. M bags are at least divided into the following two types, as shown in the attached diagram. Figure 1 As shown, the first type of M-bag is a packaging bag with M-shaped creases. This means the bag is formed by folding the packaging film, sealing it longitudinally, and then sealing the bottom. The two sides of the bag have creases. (See attached image.) Figure 2 As shown, the second type of M bag is formed by two sealing edges and a crease. Specifically, it is formed by sealing the front film, the back film, and the two side films together. The two side films are folded inward to form a crease, and the two ends of the side films are sealed together with the front film and the back film to form two sealing edges.

[0004] The bag stretcher in the aforementioned vertical bagging machine extends into the M-bag to open it. After material filling, the M-bag separates from the stretcher, and the corner-inserting device forms the corners of the bag opening (M-type sealing) before conveying it to the heat-sealing mechanism for sealing. Because existing bagging machines use a stretcher to open the M-bag, this damages the bag's creases. When using a bagging machine to package materials with M-bags, the processing precision of the M-bag itself is required to be high. The thickness on both sides of the M-bag must be consistent, and the inward creases on both sides must be highly aligned. If the M-bag's precision is poor, the corner-inserting device of the vertical bagging machine will have a poor forming effect when forming the corners of the filled M-bag opening, affecting the overall sealing effect of the M-bag. Utility Model Content

[0005] To overcome the defects and shortcomings of the existing technology, this utility model provides an M-bag supporting device for a bagging machine. The purpose of this invention is to structurally improve the rotary bag supporting device of the existing bagging machine to reduce the processing precision requirements of the M-bags and also eliminate the corner insert device in the existing bagging machine, thereby reducing equipment costs. This utility model replaces the bag support device of the rotary bag supporting device in the existing bagging machine with a double-clamp bag-clamping and supporting mechanism. The double-clamp structure achieves the opening and closing control of the M-bags, which can reduce the processing precision requirements of the M-bags and eliminate the corner insert device in the existing bagging machine, thus reducing the equipment cost of the bagging machine.

[0006] To address the problems existing in the prior art, the present invention is achieved through the following technical solution.

[0007] This utility model provides an M-bag supporting device for a bagging machine, including a bag supporting turntable and a drive mechanism for driving the bag supporting turntable to rotate. The bag supporting turntable is provided with at least two sets of bag clamping and supporting mechanisms, one set of bag clamping and supporting mechanisms being in the highest position and the other set of bag clamping and supporting mechanisms being in the lowest position. The bag clamping and supporting mechanism includes a first bag clamping and supporting component and a second bag clamping and supporting component, which are arranged opposite to each other and assembled on the bag supporting turntable. The first and second bag clamping and supporting assemblies each include a bag clamping and supporting mounting base, an upper bag clamping plate, a lower bag clamping plate, an upper bag clamping assembly, a lower bag clamping assembly, and an opening clamping assembly. The upper bag clamping plate and the lower bag clamping plate are slidably mounted on the bag clamping and supporting mounting base. The upper bag clamping assembly is mounted on the upper bag clamping plate, and the lower bag clamping assembly is mounted on the lower bag clamping plate. The upper bag clamping assembly and the lower bag clamping assembly are arranged opposite to each other, and the upper bag clamping assembly and the lower bag clamping assembly can move closer to each other and further away from each other. The upper bag clamp assembly includes an upper fixed bag clamp and an upper movable bag clamp. The upper fixed bag clamp is fixed to the upper bag clamping plate. The upper movable bag clamp is arranged opposite to the upper fixed bag clamp, located above the upper fixed bag clamp, and cooperates with the upper fixed bag clamp to form the upper bag clamping opening. The upper movable bag clamp is hinged to the upper bag clamping plate. The end of the upper movable bag clamp away from the upper bag clamping opening is bent downward and a roller that cooperates with the opening clamping assembly is provided at its end. The upper movable bag clamp is reset and closed with the upper fixed bag clamp by a tension spring. The lower bag clamp assembly includes a lower fixed bag clamp and a lower movable bag clamp. The lower fixed bag clamp is fixed to the lower clamping plate. The lower movable bag clamp is opposite to the lower fixed bag clamp, located below the lower fixed bag clamp, and cooperates with the lower fixed bag clamp to form the lower bag opening. The lower movable bag clamp is hinged to the lower clamping plate. The end of the lower movable bag clamp away from the lower bag opening is bent upward and a roller that cooperates with the opening clamp assembly is provided at its end. The lower movable bag clamp is reset and closed with the lower fixed bag clamp by a tension spring. The clamping assembly includes a clamping push plate, a first connecting rod, and a second connecting rod. The first and second connecting rods are arranged in parallel. One end of the first and second connecting rods is hinged to the clamping push plate, and the other end of the first and second connecting rods is hinged to the bag clamping support mounting base. The clamping push plate moves towards the upper and lower bag clamping assemblies under the action of an external pushing force, pushing the upper and lower movable bag clamps to rotate around their hinge axes, opening the upper and lower bag openings. The clamping push plate is reset by the action of a tension spring connected to it, and the upper and lower movable bag clamps are also reset by the action of a tension spring connected to them, closing the upper and lower bag openings.

[0008] More preferably, a first rack is installed on the upper bag clamping plate, a second rack is installed on the lower bag clamping plate, and a gear is rotatably mounted on the bag clamping support mounting seat, with the gear located between the first rack and the second rack, and both the first rack and the second rack meshing with the gear.

[0009] More preferably, the first bag clamping and supporting assembly and the second bag clamping and supporting assembly are slidably mounted on the bag supporting turntable, and the distance between the first bag clamping and supporting assembly and the second bag clamping and supporting assembly is adjusted by the distance adjustment assembly.

[0010] More preferably, the spacing adjustment assembly includes a first lead screw seat, a second lead screw seat, and a bidirectional threaded lead screw. The bidirectional threaded lead screw is rotatably mounted in the first lead screw seat and the second lead screw seat. The first bag clamping and supporting assembly and the second bag clamping and supporting assembly are respectively threaded onto the positive and negative thread sections of the bidirectional threaded lead screw.

[0011] More preferably, the bag-supporting turntable is provided with a support mounting base for assembling the bag-clamping and bag-supporting mechanism.

[0012] More preferably, the bag clamping and supporting mounting base is provided with an inserting corner assembly on the opposite side of the mounting side of the upper and lower bag clamping plates, and the inserting corner assembly is slidably mounted on the bag clamping and supporting mounting base via a slide rail.

[0013] More preferably, the corner insert assembly includes a sliding seat and a corner insert piece. The front end of the corner insert piece extends through the bag clamping and supporting bag mounting seat between the upper fixed bag clamp and the lower fixed bag clamp. The sliding seat is provided with a rotatable roller. When the roller on the sliding seat is subjected to external force, the sliding seat slides along the slide rail, causing the corner insert piece to fold the side of the M bag inward toward the bag opening. The sliding seat is reset under the action of the tension spring connected to it.

[0014] In a further preferred embodiment, the M-bag supporting device also includes a supporting turntable mounting base, wherein the supporting turntable is mounted on the supporting turntable mounting base via a hollow rotary table, and the driving mechanism is mounted on the supporting turntable mounting base and is connected to the hollow rotary table for transmission, thereby driving the supporting turntable to rotate.

[0015] More preferably, the rotation axis of the bag-supporting turntable forms a 45° angle with the horizontal line; the bag-clamping and bag-supporting mounting base forms a 45° angle with the rotation axis of the bag-supporting turntable.

[0016] More preferably, the rotation axis of the bag-supporting turntable is parallel to the horizontal line, and the bag-clamping and bag-supporting mounting base is perpendicular to the rotation axis of the bag-supporting turntable.

[0017] More preferably, the bag-supporting turntable mounting base is provided with a first opening clamping drive assembly acting on the opening clamping push plate of the highest position bag-supporting mechanism, a second opening clamping drive assembly acting on the opening clamping push plate of the lowest position bag-supporting mechanism, and a lower bag-supporting drive assembly acting on the upper and lower bag-supporting mechanisms to drive the upper bag clamping assembly and the lower bag clamping assembly to move away from each other.

[0018] Compared with the prior art, the beneficial technical effects of this utility model are as follows: 1. This utility model improves the structure of the turntable bag-supporting device of the existing bag-packing machine by replacing the existing bag-supporting device with a double-clamping structure. The first bag-clamping and bag-supporting component is used to clamp the two sealing edges on one side of the M bag, and the second bag-clamping and bag-supporting component is used to clamp the two sealing edges on the other side of the M bag. When the M bag is fed in horizontally, the upper bag clamping component is used to clamp the upper sealing edge of the M bag, and the lower bag clamping component is used to clamp the lower sealing edge of the M bag. The upper and lower bag openings of the first and second bag-clamping and bag-supporting components open simultaneously to receive and clamp the M bag being conveyed. When the upper and lower bag clamping components move away from each other, the bag opening of the M bag is opened. This invention utilizes the bag structure of the M bag for clamping and supporting the bag. Compared with the existing bag support structure, it has lower requirements for the processing precision of the M bag. When closing the M bag, the upper bag clamping assembly and the lower bag clamping assembly approach each other to close the bag opening. This eliminates the need for the corner insertion device structure in the existing bagging machine, thereby reducing the equipment cost of the bagging machine.

[0019] 2. The upper and lower movable bag clamps of this utility model are bent and, in conjunction with the rollers at their ends, can better cooperate with the opening push plate of the opening assembly to achieve the opening action. Simultaneously, since the upper and lower bag clamp assemblies need to be relatively close and relatively far apart, the structure of the opening assembly of this utility model is not affected by the relative movement of the upper and lower bag clamp assemblies, and can open normally in both cases. When the upper and lower bag clamp assemblies move relative to each other, under the action of the rollers, the upper and lower movable bag clamps can move along the opening push plate without changing the position of the opening push plate. This eliminates the need to change the pushing stroke of the opening drive mechanism that pushes the opening push plate, keeping the opening action of the opening drive mechanism constant, thereby simplifying the control and structural design of the opening drive mechanism.

[0020] 3. The opening clamp assembly of this utility model utilizes a first connecting rod and a second connecting rod to assemble the opening clamp push plate and the bag support mounting base together, forming a parallelogram-shaped linkage structure. When the opening clamp push plate moves towards the upper and lower movable bag clamps, it will move relative to the upper and lower movable bag clamps. Only a pushing force along the length of the opening clamp push plate is needed to push the opening clamp push plate against the upper and lower movable bag clamps, thereby opening the clamps. Even if the upper and lower bag clamp assemblies move relative to each other, it does not affect the pushing stroke and method of the external force on the opening clamp push plate. This simplifies the structural form of the opening clamp drive assembly. At the same time, when a cylinder is used as the opening clamp drive assembly, the force acting on the upper and lower movable bag clamps is made gentler through the force conversion of the opening clamp assembly, avoiding damage to the upper and lower movable bag clamps. The opening push plate is reset by the action of a tension spring. Therefore, only an external pushing force needs to be applied to the opening push plate to open the clamp. The closing of the bag opening is achieved by the tension spring force, which simplifies the drive structure.

[0021] 4. This utility model achieves relative motion transmission between the upper bag clamping assembly and the lower bag clamping assembly through racks mounted on the upper and lower bag clamping plates and gears rotatably mounted between the racks. The structure is simple and the operation is stable. Only a thrust needs to be applied to the rack to achieve the relative movement of the upper bag clamping assembly and the lower bag clamping assembly away from each other.

[0022] 5. The first and second bag clamping and supporting components of this utility model can adjust the distance between them through the spacing adjustment component, so as to adapt to M bags of different widths. When the width of the M bag changes, the spacing adjustment component can be used to adapt to the width change of the M bag.

[0023] 6. This utility model has a corner insert assembly on the bag clamping and supporting mounting base. After the material is filled into the M bag, an external force can be used to push the sliding seat in the corner insert assembly to make it move horizontally, causing the corner insert piece to fold the side of the M bag inward, thus realizing the M-shaped folding and forming of the bag opening. This further improves the M-shaped forming effect of the M bag sealing. Compared with the upper bag clamping assembly and the lower bag clamping assembly being close together, the addition of the corner insert assembly further improves the sealing and forming effect of the M bag, ensuring that the M bag is sealed neatly. It can also eliminate the complex corner insert device in the existing bagging machine, reducing the cost of the bagging machine equipment.

[0024] 7. The M-bag supporting device of this utility model is inclined, making it suitable for packaging bulk materials. When the bag-clamping and supporting mechanism receives the M-bag at its highest position, the M-bag is in a flat position. When the M-bag supporting device rotates the M-bag to its lowest position, the M-bag is in a vertical position with its opening facing upwards. This allows it to receive granular, powdery, or liquid materials, thus broadening the types of materials that the bagging machine can package.

[0025] 8. The M-bag supporting device of this utility model is set vertically, that is, the rotation axis of the supporting turntable in the M-bag supporting device is parallel to the horizontal line. At this time, it can be used for packaging regular block materials or packaging materials covered with packaging film. The posture of the M-bag supporting device can be adjusted according to the change of material type, so that the bagging machine using the M-bag supporting device provided by this utility model can package a wider range of material types.

[0026] 9. This utility model integrates the clamping drive component and the bag-supporting drive component on the bag-supporting turntable mounting base, resulting in a high degree of structural integration and avoiding interference between the drive component and other mechanisms of the bagging machine. Furthermore, for the bag clamping and supporting mechanism located at the highest position, its function is to receive bag M. At this position, only the clamp needs to be opened to grip the bag M. However, for the bag clamping and supporting mechanism at the lowest position, the bag M needs to be opened. After material filling, the bag M also needs to be released. Since the actions of opening the bag M and releasing the bag clamp are not simultaneous, a bag-supporting drive component and a clamping drive component are provided to separately realize the bag-supporting action and the clamping action. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of the first type of M bag; Figure 2 This is a cross-sectional view of the second type of M bag; Figure 3 This is a three-dimensional structural diagram of the M-bag support device of this utility model; Figure 4 This is a three-dimensional structural diagram of the hidden bag-supporting turntable mounting base wall panel of the M-bag supporting device of this utility model; Figure 5 This is a side view of the hidden bag-supporting turntable mounting base wall panel of the M-bag supporting device of this utility model. Figure 6 This is a schematic diagram of the main structure of the hidden bag-supporting turntable mounting base wall panel of the M-bag supporting device of this utility model; Figure 7 This is a rear view structural diagram of the hidden bag-supporting turntable mounting base wall panel of the M-bag supporting device of this utility model; Figure 8 This is a schematic diagram of the structure of the bag clamping and supporting assembly of this utility model; Figure 9 This is a schematic diagram of the opening structure of the bag clamping and supporting assembly of this utility model; Figure 10 This is a schematic diagram of the bag-holding and bag-supporting structure of the present invention; Figure 11 This is a rear view schematic diagram of the bag-holding and supporting structure of the bag-holding and supporting assembly of this utility model; Figure 12 This is a schematic diagram of the closed insertion angle of the bag clamping and supporting assembly of this utility model; Figure 13 This is a rear view structural diagram of the closed insertion angle of the bag clamping and supporting assembly of this utility model; Reference numerals: 1. Bag-holding turntable; 2. Drive mechanism; 3. Bag-clamping and holding mechanism; 4. Highest position; 5. Lowest position; 6. First bag-clamping and holding assembly; 7. Second bag-clamping and holding assembly; 8. Bag-clamping and holding mounting base; 9. Upper bag-clamping plate; 10. Lower bag-clamping plate; 11. Upper bag clamping assembly; 12. Lower bag clamping assembly; 13. Upper fixed bag clamp; 14. Upper movable bag clamp; 15. Upper bag opening clamp; 16. Lower fixed bag clamp; 17. Lower movable bag clamp; 18. Lower bag opening clamp; 19. Opening push plate; 20. The first... 21. Connecting rod, 22. Second connecting rod, 23. First rack, 24. Second rack, 25. Gear, 26. Spacing adjustment assembly, 27. First lead screw seat, 28. Second lead screw seat, 29. Bidirectional threaded lead screw, 30. Support mounting base, 31. Angle insertion assembly, 32. Sliding seat, 33. Angle insertion piece, 34. Bag support turntable mounting base, 35. Hollow rotary table, 36. First clamping drive assembly, 37. Second clamping drive assembly, 38. Lower bag support drive assembly, 39. Upper bag support drive assembly. Detailed Implementation

[0028] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] Example 1 As a preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 Appendix Figure 8 Appendix Figure 9 and attached Figure 10 As shown, this embodiment provides an M-bag supporting device for a bagging machine, including a bag supporting turntable 1 and a driving mechanism 2 for driving the bag supporting turntable 1 to rotate. At least two sets of bag clamping and supporting mechanisms 3 are provided on the bag supporting turntable 1, one set of bag clamping and supporting mechanisms 3 is in the highest position 4, and the other set of bag clamping and supporting mechanisms 3 is in the lowest position 5.

[0030] Based on the layout and working principle of existing bagging machines, the bag clamping and supporting mechanism 3, located at the highest position 4, is used to receive M bags taken out from the bag magazine. Its purpose is to clamp the four sealing positions on both sides of the M bag (such as...). Figure 2(As shown). The bag clamping and supporting mechanism 3, located at the lowest position 5, is used to open the M bag and fill it with material.

[0031] As an example of this embodiment, please refer to the appendix to the specification. Figure 3 As shown, the rotation axis of the bag-supporting turntable 1 of the M-bag supporting device forms a 45° angle with the horizontal line; the bag-clamping and supporting mounting base 8 forms a 45° angle with the rotation axis of the bag-supporting turntable 1. This bag-supporting device is suitable for filling bulk materials (such as granular materials and powdery materials) or liquid materials, and is mainly suitable for vertical bagging machines.

[0032] As another example of this embodiment, the rotation axis of the bag-supporting turntable 1 is parallel to the horizontal line, and the bag-clamping and bag-supporting mounting base 8 is perpendicular to the rotation axis of the bag-supporting turntable 1 (not shown in the figure). This bag-supporting device is suitable for horizontal bagging machines and is mainly used for bagging and packaging regular block-shaped materials, such as materials wrapped in packaging film or rectangular materials.

[0033] In this embodiment, refer to the appendix to the specification. Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 and attached Figure 7 As shown, the bag clamping and supporting mechanism 3 includes a first bag clamping and supporting component 6 and a second bag clamping and supporting component 7. The first bag clamping and supporting component 6 and the second bag clamping and supporting component 7 are arranged opposite to each other and are mounted on the supporting turntable 1.

[0034] As an example of this embodiment, to accommodate changes in the width of the M-bag, the first bag clamping and supporting assembly 6 and the second bag clamping and supporting assembly 7 are slidably mounted on the bag supporting turntable 1, and the spacing between the first bag clamping and supporting assembly 6 and the second bag clamping and supporting assembly 7 is adjusted by the spacing adjustment assembly 25. As an example, the spacing adjustment assembly 25 includes a first lead screw seat 26, a second lead screw seat 27, and a bidirectional threaded lead screw 28. The bidirectional threaded lead screw 28 is rotatably mounted within the first lead screw seat 26 and the second lead screw seat 27, and the first bag clamping and supporting assembly 6 and the second bag clamping and supporting assembly 7 are respectively threaded onto the positive and negative thread sections of the bidirectional threaded lead screw 28. This allows for adaptation to M-bags of different widths; when the width of the M-bag changes, the spacing adjustment assembly 25 can accommodate the width change.

[0035] Refer to the instruction manual appendix Figure 8 Appendix Figure 9 and attached Figure 10As shown, both the first bag clamping and supporting assembly 6 and the second bag clamping and supporting assembly 7 include a bag clamping and supporting mounting base 8, an upper bag clamping plate 9, a lower bag clamping plate 10, an upper bag clamping assembly 11, a lower bag clamping assembly 12, and an opening clamping assembly. The upper bag clamping plate 9 and the lower bag clamping plate 10 are slidably mounted on the bag clamping and supporting mounting base 8. The upper bag clamping assembly 11 is mounted on the upper bag clamping plate 9, and the lower bag clamping assembly 12 is mounted on the lower bag clamping plate 10. The upper bag clamping assembly 11 and the lower bag clamping assembly 12 are arranged opposite to each other, and the upper bag clamping assembly 11 and the lower bag clamping assembly 12 can move closer to each other and further away from each other. When the upper bag clamping assembly 11 and the lower bag clamping assembly 12 move further away from each other, the action of opening the M bag can be realized, so as to fill the M bag with materials.

[0036] Furthermore, the upper bag clamp assembly 11 includes an upper fixed bag clamp 13 and an upper movable bag clamp 14. The upper fixed bag clamp 13 is fixed on the upper bag clamping plate 9. The upper movable bag clamp 14 is arranged opposite to the upper fixed bag clamp 13, located above the upper fixed bag clamp 13, and cooperates with the upper fixed bag clamp 13 to form an upper bag clamping opening 15. The upper movable bag clamp 14 is hinged to the upper bag clamping plate 9. The end of the upper movable bag clamp 14 away from the upper bag clamping opening 15 is bent downward and a roller that cooperates with the opening clamping assembly is provided at its end. The upper movable bag clamp 14 is reset by a tension spring and closed with the upper fixed bag clamp 13. The lower bag clamp assembly 12 includes a lower fixed bag clamp 16 and a lower movable bag clamp 17. The lower fixed bag clamp 16 is fixed on the lower clamping plate 10. The lower movable bag clamp 17 is arranged opposite to the lower fixed bag clamp 16, located below the lower fixed bag clamp 16, and cooperates with the lower fixed bag clamp 16 to form a lower bag opening 18. The lower movable bag clamp 17 is hinged to the lower clamping plate 10. The end of the lower movable bag clamp 17 away from the lower bag opening 18 is bent upward and a roller that cooperates with the opening clamp assembly is provided at its end. The lower movable bag clamp 17 is reset and closed with the lower fixed bag clamp 16 by a tension spring. The clamping assembly includes a clamping push plate 19, a first connecting rod 20, and a second connecting rod 21. The first connecting rod 20 and the second connecting rod 21 are arranged in parallel. One end of the first connecting rod 20 and the second connecting rod 21 is hinged to the clamping push plate 19, and the other end of the first connecting rod 20 and the second connecting rod 21 is hinged to the bag clamping support mounting seat 8. Under the action of an external pushing force, the clamping push plate 19 moves towards the upper bag clamping assembly 11 and the lower bag clamping assembly 12, pushing the upper movable bag clamp 14 and the lower movable bag clamp 17 to rotate around their hinge axis, opening the upper bag clamping opening 15 and the lower bag clamping opening 18. The clamping push plate 19 is reset by the action of the tension spring connected to it, and the upper movable bag clamp 14 and the lower movable bag clamp 17 are reset by the action of the tension spring connected to them, closing the upper bag clamping opening 15 and the lower bag clamping opening 18. Rollers are provided at the bottom of the clamping push plate 19 to reduce wear between the clamping push plate 19 and its external clamping drive assembly.

[0037] When the upper bag opening 15 and the lower bag opening 18 are open, they are used to receive the M bag. After the M bag is fed into the upper bag opening 15 and the lower bag opening 18, the opening clamping assembly resets, and the upper bag opening 15 and the lower bag opening 18 reset and close, clamping the M bag. Then the bag-supporting turntable 1 rotates, driving the M bag to the lowest position 5. At this time, an external force is applied to the upper bag clamping plate 9 or the lower bag clamping plate 10, so that the upper bag clamping assembly 11 and the lower bag clamping assembly 12 move away from each other, opening the bag opening of the M bag. Then, material is filled into the M bag. After the material is filled, the upper bag clamping assembly 11 and the lower bag clamping assembly 12 reset under the action of the tension spring, realizing the closure of the bag opening of the M bag. An external force is applied to the opening clamping assembly, and the opening clamping push plate 19 pushes the upper movable bag clamp 14 and the lower movable bag clamp 17 to open the upper bag opening 15 and the lower bag opening 18, so that the M bag can be separated from the bag clamping and supporting mechanism 3 and enter the next process for sealing.

[0038] In this embodiment, the existing bag-holding device structure is replaced with a bag-holding device with a double-clamp structure. The first bag-holding and holding assembly 6 clamps the two sealing edges on one side of the M-bag, and the second bag-holding and holding assembly 7 clamps the two sealing edges on the other side of the M-bag. When the M-bag is horizontally fed in, the upper bag clamping assembly 11 clamps the upper sealing edge of the M-bag, and the lower bag clamping assembly clamps the lower sealing edge of the M-bag. The upper clamping opening 15 and the lower clamping opening 18 of the first bag-holding and holding assembly 6 and the second bag-holding and holding assembly 7 open simultaneously to receive and clamp the fed M-bag. The upper and lower bag clamping assemblies move away from each other, thus opening the mouth of the M-bag. This invention utilizes the bag structure of the M-bag for clamping and holding. Compared to the existing bag-holding device structure, it has lower requirements for the processing precision of the M-bag. Furthermore, when closing the M-bag, the upper and lower bag clamping assemblies move closer together to close the bag mouth, eliminating the need for the corner insertion device structure in existing bag-holding machines and reducing the equipment cost of the bag-holding machine.

[0039] The upper movable bag clamp 14 and the lower movable bag clamp 17 are bent and, in conjunction with the rollers at their ends, can better cooperate with the opening push plate 19 of the opening assembly to achieve the opening action. Simultaneously, since the upper and lower bag clamp assemblies need to be relatively close and relatively far apart, the structure of the opening assembly of this invention is not affected by the relative movement of the upper and lower bag clamp assemblies, and can open normally in both cases. When the upper and lower bag clamp assemblies move relative to each other, the upper movable bag clamp 14 and the lower movable bag clamp 17 can move along the opening push plate 19 under the action of the rollers, without changing the position of the opening push plate 19. This eliminates the need to change the pushing stroke of the opening drive mechanism 2 that pushes the opening push plate 19, keeping the opening action of the opening drive mechanism 2 unchanged, thereby simplifying the control and structural settings of the opening drive mechanism 2.

[0040] The clamping assembly utilizes a first connecting rod 20 and a second connecting rod 21 to assemble the clamping push plate 19 with the bag support mounting base 8, forming a parallelogram-shaped linkage structure. When the clamping push plate 19 moves towards the upper movable bag clamp 14 and the lower movable bag clamp 17, it will move relative to the upper movable bag clamp 14 and the lower movable bag clamp 17. Only a thrust along the length of the clamping push plate 19 is needed to push the clamping push plate 19 against the upper movable bag clamp 14 and the lower movable bag clamp 17, thereby opening the clamp. Even if the upper bag clamp assembly 11 and the lower bag clamp assembly 12 move relative to each other, it will not affect the stroke and method of the external force pushing the clamping push plate 19. This simplifies the structure of the clamping drive assembly. At the same time, when a cylinder is used as the clamping drive assembly, the force acting on the upper movable bag clamp 14 and the lower movable bag clamp 17 is made gentler through the thrust conversion of the clamping assembly, avoiding damage to the upper movable bag clamp 14 and the lower movable bag clamp 17. The opening push plate 19 is reset by the action of a tension spring. Therefore, only an external pushing force needs to be applied to the opening push plate 19 to open the clamp. The closing of the bag opening is achieved by the tension spring force, which simplifies the drive structure.

[0041] Example 2 As another preferred embodiment of this utility model, this embodiment is a further detailed supplement and explanation of the technical solution of this utility model based on the above-described embodiment 1. In this embodiment, refer to the appendix to the specification. Figure 10 and attached Figure 11 As shown, a first rack 22 is mounted on the upper bag clamping plate 9, and a second rack 23 is mounted on the lower bag clamping plate 10. A gear 24 is rotatably mounted on the bag clamping support mounting base 8, and the gear 24 is located between the first rack 22 and the second rack 23. Both the first rack 22 and the second rack 23 mesh with the gear 24. In this embodiment, the relative motion transmission between the upper bag clamping assembly 11 and the lower bag clamping assembly 12 is achieved by the racks mounted on the upper bag clamping plate 9 and the lower bag clamping plate 10 and the gear 24 rotatably mounted between the racks. The structure is simple and the operation is stable. Only a thrust needs to be applied to the racks to achieve the relative moving away action of the upper bag clamping assembly 11 and the lower bag clamping assembly 12.

[0042] Example 3 As another preferred embodiment of this utility model, this embodiment is a further detailed supplement and explanation of the technical solution of this utility model based on the above-described embodiment 1 or embodiment 2. In this embodiment, refer to the appendix to the specification. Figure 11 Appendix Figure 12 and attached Figure 13 As shown, the bag clamping and supporting mounting base 8 is provided with a corner insert assembly 30 on the opposite side of the mounting side of the upper bag clamping plate 9 and the lower bag clamping plate 10. The corner insert assembly is slidably mounted on the bag clamping and supporting mounting base 8 via a slide rail.

[0043] As an example, the corner insert assembly 30 includes a sliding seat 31 and a corner insert piece 32. The front end of the corner insert piece 32 extends through the bag clamping support mounting seat 8 between the upward fixed bag clamp 13 and the lower fixed bag clamp 16. The sliding seat 31 is provided with a rotatable roller. When the roller on the sliding seat 31 is subjected to external force, the sliding seat 31 slides along the slide rail, causing the corner insert piece 32 to fold the side of the M bag inward toward the bag opening. The sliding seat 31 is reset under the action of the tension spring connected to it.

[0044] In this embodiment, a corner insert assembly 30 is provided on the bag clamping and supporting mounting base 8. After the material is filled into the M bag, an external force can be used to push the sliding seat 31 in the corner insert assembly 30 to make it move horizontally, thereby driving the corner insert piece 32 to fold the side of the M bag inward, realizing the M-shaped folding and forming of the bag opening. This further improves the M-shaped forming effect of the M bag sealing. Compared with the approach of the upper bag clamping assembly 11 and the lower bag clamping assembly 12 being close together, the addition of the corner insert assembly 30 further improves the sealing and forming effect of the M bag, ensuring that the M bag is neatly sealed. It can also eliminate the complex corner insert device in the existing bagging machine, reducing the cost of the bagging machine equipment.

[0045] Example 4 As another preferred embodiment of this utility model, this embodiment is a further detailed supplement and explanation of the technical solution of this utility model based on the above-described embodiments 1, 2, or 3. In this embodiment, refer to the appendix to the specification. Figure 4 Appendix Figure 5 Appendix Figure 6 and attached Figure 7 As shown, the bag-supporting turntable 1 is provided with a support mounting base 29 for assembling the bag-clamping and bag-supporting mechanism 3.

[0046] Furthermore, the M-bag supporting device also includes a supporting turntable mounting base 33. The supporting turntable 1 is mounted on the supporting turntable mounting base 33 via a hollow rotating table 34. The driving mechanism 2 is mounted on the supporting turntable mounting base 33 and is connected to the hollow rotating table 34 for transmission, driving the supporting turntable 1 to rotate.

[0047] The bag-supporting turntable mounting base 33 is provided with a first opening clamping drive assembly 35 that acts on the opening clamping push plate 19 of the highest position 4 bag-supporting mechanism 3, a second opening clamping drive assembly 36 that acts on the opening clamping push plate 19 of the lowest position 5 bag-supporting mechanism 3, and a lower bag-supporting drive assembly 37 that acts on the upper bag clamping plate 9 and the lower bag clamping plate 10 of the lowest position 5 bag-supporting mechanism 3 to drive the upper bag clamping assembly 11 and the lower bag clamping assembly 12 away from each other.

[0048] In this embodiment, the clamping drive assembly and the bag-supporting drive assembly are integrated on the bag-supporting turntable mounting base 33, resulting in a high degree of structural integration and preventing interference between the drive assembly and other mechanisms of the bagging machine. Furthermore, the bag-clamping and supporting mechanism 3 at the highest position 4 is used to receive bags M; at this position, only clamping is required to grip the bags. However, the bag-clamping and supporting mechanism 3 at the lowest position 5 needs to open the bags M. After material filling, the bags M also need to be released. Since the actions of opening the bags M and releasing the bag clamps are not simultaneous, a bag-supporting drive assembly and a clamping drive assembly are provided to separately realize the bag-supporting and clamping actions.

[0049] Furthermore, as a preferred example, this embodiment also includes an upper bag support drive assembly 38, which acts on the upper bag clamping plate 9 and the lower bag clamping plate 10 of the highest position 4 bag clamping and supporting mechanism 3 to drive the upper bag clamping assembly 11 and the lower bag clamping assembly 12 away from each other.

[0050] As an example, the clamp opening drive assembly and the bag opening drive assembly can be implemented using a structure where a cylinder connects to the push plate, or a structure where a servo motor assembly connects to the push plate via a crank-connecting rod transmission assembly. Using a servo motor assembly as the clamp opening drive assembly and / or the bag opening drive assembly can smooth the push plate movement and avoid harsh contact forces that could lead to severe wear on components.

Claims

1. A bag-holding device for a bagging machine, comprising a bag-holding turntable (1) and a drive mechanism (2) for rotating the bag-holding turntable (1), wherein at least two sets of bag-clamping and bag-holding mechanisms (3) are provided on the bag-holding turntable (1), wherein one set of bag-clamping and bag-holding mechanisms (3) is in the highest position (4) and the other set of bag-clamping and bag-holding mechanisms (3) is in the lowest position (5); the bag-clamping and bag-holding mechanism (3) comprises a first bag-clamping and bag-holding assembly (6) and a second bag-clamping and bag-holding assembly (7), the first bag-clamping and bag-holding assembly (6) and the second bag-clamping and bag-holding assembly (7) are arranged opposite to each other and assembled on the bag-holding turntable (1); characterized in that: The first bag clamping and supporting assembly (6) and the second bag clamping and supporting assembly (7) both include a bag clamping and supporting mounting base (8), an upper bag clamping plate (9), a lower bag clamping plate (10), an upper bag clamping assembly (11), a lower bag clamping assembly (12), and an opening clamping assembly. The upper bag clamping plate (9) and the lower bag clamping plate (10) are slidably mounted on the bag clamping and supporting mounting base (8). The upper bag clamping assembly (11) is mounted on the upper bag clamping plate (9), and the lower bag clamping assembly (12) is mounted on the lower bag clamping plate (10). The upper bag clamping assembly (11) and the lower bag clamping assembly (12) are arranged opposite to each other, and the upper bag clamping assembly (11) and the lower bag clamping assembly (12) can move closer to each other and further away from each other. The upper bag clamp assembly (11) includes an upper fixed bag clamp (13) and an upper movable bag clamp (14). The upper fixed bag clamp (13) is fixed on the upper bag clamping plate (9). The upper movable bag clamp (14) is arranged opposite to the upper fixed bag clamp (13), located above the upper fixed bag clamp (13), and cooperates with the upper fixed bag clamp (13) to form an upper bag clamping opening (15). The upper movable bag clamp (14) is hinged on the upper bag clamping plate (9). The end of the upper movable bag clamp (14) away from the upper bag clamping opening (15) is bent downward and a roller that cooperates with the opening clamping assembly is provided at its end. The upper movable bag clamp (14) is reset by a tension spring and closed with the upper fixed bag clamp (13). The lower bag clamp assembly (12) includes a lower fixed bag clamp (16) and a lower movable bag clamp (17). The lower fixed bag clamp (16) is fixed on the lower clamping bag plate (10). The lower movable bag clamp (17) is arranged opposite to the lower fixed bag clamp (16), located below the lower fixed bag clamp (16), and cooperates with the lower fixed bag clamp (16) to form a lower clamping bag opening (18). The lower movable bag clamp (17) is hinged on the lower clamping bag plate (10). The end of the lower movable bag clamp (17) away from the lower clamping bag opening (18) is bent upward and a roller that cooperates with the opening clamp assembly is provided at its end. The lower movable bag clamp (17) is reset by a tension spring and closed with the lower fixed bag clamp (16). The clamping assembly includes a clamping push plate (19), a first connecting rod (20) and a second connecting rod (21). The first connecting rod (20) and the second connecting rod (21) are arranged in parallel. One end of the first connecting rod (20) and the second connecting rod (21) are hinged to the clamping push plate (19), and the other end of the first connecting rod (20) and the second connecting rod (21) are hinged to the bag support mounting base (8). The opening push plate (19) moves towards the upper bag clamp assembly (11) and the lower bag clamp assembly (12) under the action of external force, pushing the upper movable bag clamp (14) and the lower movable bag clamp (17) to rotate around their hinge axis, opening the upper bag opening (15) and the lower bag opening (18); the opening push plate (19) is reset by the action of the tension spring connected to it, the upper movable bag clamp (14) and the lower movable bag clamp (17) are reset by the action of the tension spring connected to them, and the upper bag opening (15) and the lower bag opening (18) are closed.

2. The bag-supporting device of the bagging machine as described in claim 1, characterized in that: The bag clamping and supporting mounting base (8) is provided with a corner fitting (30) on the opposite side of the mounting side of the upper bag clamping plate (9) and the lower bag clamping plate (10). The corner fitting (30) is slidably mounted on the bag clamping and supporting mounting base (8) via a slide rail.

3. The bag-supporting device of the bagging machine as described in claim 2, characterized in that: The corner insert assembly (30) includes a sliding seat (31) and a corner insert piece (32). The front end of the corner insert piece (32) extends through the bag clamping support mounting seat (8) and extends between the upward fixed bag clamp (13) and the lower fixed bag clamp (16). The sliding seat (31) is provided with a rotatable roller. After the roller on the sliding seat (31) is subjected to external force, the sliding seat (31) slides along the slide rail, which drives the corner insert piece (32) to fold the side of the M bag inward toward the bag opening. The sliding seat (31) is reset under the action of the tension spring connected to it.

4. The bag-supporting device of the bagging machine as described in any one of claims 1-3, characterized in that: A first rack (22) is installed on the upper bag clamping plate (9), a second rack (23) is installed on the lower bag clamping plate (10), and a gear (24) is rotatably mounted on the bag clamping support mounting seat (8), and the gear (24) is located between the first rack (22) and the second rack (23), and both the first rack (22) and the second rack (23) mesh with the gear (24).

5. The M-bag supporting device of the bagging machine as described in any one of claims 1-3, characterized in that: The first bag clamping and supporting assembly (6) and the second bag clamping and supporting assembly (7) are slidably mounted on the supporting turntable (1), and the distance between the first bag clamping and supporting assembly (6) and the second bag clamping and supporting assembly (7) is adjusted by the spacing adjustment assembly (25).

6. The bag-supporting device of the bagging machine as described in any one of claims 1-3, characterized in that: The M-bag supporting device also includes a supporting turntable mounting base (33). The supporting turntable (1) is mounted on the supporting turntable mounting base (33) via a hollow rotary table (34). The driving mechanism (2) is mounted on the supporting turntable mounting base (33) and is connected to the hollow rotary table (34) for transmission, driving the supporting turntable (1) to rotate.

7. The bag-supporting device for the bagging machine as described in claim 6, characterized in that: The bag-supporting turntable mounting base (33) is provided with a first opening clamping drive assembly (35) acting on the opening clamping push plate (19) of the bag-supporting mechanism (3) at the highest position (4), a second opening clamping drive assembly (36) acting on the opening clamping push plate (19) of the bag-supporting mechanism (3) at the lowest position (5), and a lower supporting bag drive assembly (37) acting on the upper bag clamping plate (9) and the lower bag clamping plate (10) of the bag-supporting mechanism (3) at the lowest position (5) to drive the upper bag clamping assembly (11) and the lower bag clamping assembly (12) to move away from each other.

8. The bag-supporting device of the bagging machine as described in any one of claims 1-3, characterized in that: The rotation axis of the bag-supporting turntable (1) is at a 45° angle to the horizontal line; the bag-clamping and bag-supporting mounting base (8) is at a 45° angle to the rotation axis of the bag-supporting turntable (1).

9. The bag-supporting device of the bagging machine as described in any one of claims 1-3, characterized in that: The rotation axis of the bag-supporting turntable (1) is parallel to the horizontal line, and the bag-clamping and bag-supporting mounting base (8) is perpendicular to the rotation axis of the bag-supporting turntable (1).

10. The bag-supporting device of the bagging machine as described in any one of claims 1-3, characterized in that: The bag-supporting turntable (1) is provided with a support mounting base (29) for assembling the bag-clamping and bag-supporting mechanism (3).

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