Bag feeding device for bagging machine
By setting bag support mechanisms on both sides of the bag-taking station of the bag-making machine, the problem of excessive bag opening during the lifting process of large-sized packaging bags is solved, realizing the continuity of the bag-making machine process and simple equipment modification.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN SOONTRUE MACHINERY EQUIP
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-24
AI Technical Summary
When handling large-sized packaging bags, the bag storage device of existing bag-packing machines is prone to separation of the upper bag body from the lower bag body, resulting in an excessively large bag opening. This affects the connection of the subsequent bag-picking and opening mechanism, causing discontinuity in the bag-packing machine process.
Bag support mechanisms are installed on both sides of the bag picking station, including bag support plates and support drive components. These support the bottom of the packaging bags picked up by the bag picking mechanism, ensuring that the bag opening is closed. The packaging bags are supported by the rotation or linear movement of the support plates, preventing the lower bag body from sagging.
It effectively solves the problem of excessive bag opening during the lifting process of large-sized packaging bags, ensuring the continuity of bag taking and opening processes of the bagging machine, and the modification is simple, reducing equipment costs.
Smart Images
Figure CN224546515U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bagging packaging machine technology, and more specifically to a bag feeding device for a bagging machine. Background Technology
[0002] For example, if the authorization announcement date is March 21, 2025, the authorization announcement number is CN222646396U, and the name is "A Bag Storage Device for a Bag Making Machine", it includes a bag picking station, a bag placing station, and a conveying mechanism. The bag picking station is equipped with a detection photoelectric sensor and an upper suction bag mechanism. The conveying mechanism is equipped with multiple bag bins for placing pre-made bags. When the detection photoelectric sensor at the bag picking station detects no bag, the conveying mechanism moves the bag bins at the bag placing station to the bag picking station. The upper suction bag mechanism includes a suction bag assembly and a vertical displacement assembly. When the detection photoelectric sensor at the bag picking station detects a bag, the vertical displacement assembly moves the suction bag assembly down to a predetermined position, the suction bag assembly picks up the pre-made bag at the bag picking station, and the vertical displacement assembly moves the suction bag assembly up to its original position.
[0003] The aforementioned prior art utilizes a conveying mechanism as a bag storage mechanism, with an upper suction bag mechanism positioned above the bag-picking station at its front end. The upper suction bag mechanism retrieves the bags one by one. However, this prior art is only suitable for smaller bags. When the bags are larger (e.g., 500mm long, 350mm wide), as the upper suction bag mechanism picks up the upper bag body and lifts it upwards, the upper bag body may separate from the lower bag body due to its own weight and / or electrostatic adsorption between the bag and its lower bag. (This effect is less pronounced when the bag size is small, as the bag opening is also small, and it hardly affects the bag-picking and opening mechanism.) When the bag-picking and opening mechanism of the bag-packing machine receives the bag retrieved by the upper suction bag mechanism, the lower bag body has already separated from the upper bag body, and the bag opening is partially open. This can prevent the bag-picking and opening mechanism from smoothly connecting and picking up the opened bag, hindering the continuity of the process.
[0004] This situation is particularly evident in the bag feeding, bag retrieval, and bag opening processes of the M bag. Because the M bag opening is M-shaped on both sides, it still has a certain side wall height when the M bag is fully opened (e.g., a packaging bag that is 500mm long, 350mm wide, and 100mm high). When the bag storage device described above is used for bag feeding, the lifting and retrieval of the M bag is more likely to cause the upper bag body to separate from the lower bag body. This results in a larger opening of the packaging bag, which is more detrimental to the subsequent bag retrieval and opening mechanism and the packaging bag. Utility Model Content
[0005] To overcome the defects and shortcomings of the existing technology, this utility model provides a bag feeding device for a bagging machine. The purpose of this invention is to solve the problems existing in the bag storage device used in bagging machines, such as the lower bag body separating from the upper bag body when the packaging bag size is large, leading to the opening of the packaging bag, and the inconvenience to the subsequent bag picking and opening mechanism, affecting the continuity of the bagging machine process. This utility model provides a bag feeding device for a bagging machine, including a bag storage mechanism and an upper bag picking mechanism. The bag storage mechanism is provided with a bag picking station. The upper bag picking mechanism is configured to pick up packaging bags one by one from the bag picking station of the bag storage mechanism. Bag support mechanisms are provided on both sides of the bag picking station. The bag support mechanism includes several support plates and a bag support driving component. The bag support driving component drives the bag support plates to move below the packaging bags picked up and lifted by the upper bag picking mechanism to support the packaging bags picked up by the upper bag picking mechanism. This invention features a bag support mechanism at the bag-picking station to support the bag-picking mechanism as it lifts and picks up the packaging bag, thus closing the bag opening. This allows the subsequent bag-picking and opening mechanism to smoothly pick up the upper and lower layers of the bag opening, ensuring the smooth operation of the bag-picking and opening process 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 a bag feeding device for a bagging machine, including a bag storage mechanism and an upper bag suction mechanism. The bag storage mechanism is provided with a bag picking station, and the upper bag suction mechanism is configured to pick up and lift packaging bags one by one from the bag picking station of the bag storage mechanism. Bag support mechanisms are provided on both sides of the bag picking station. The bag support mechanism includes a plurality of bag support plates and a bag support driving assembly. The bag support driving assembly drives the bag support plates to move below the packaging bags picked up and lifted by the upper bag suction mechanism, so as to support the packaging bags picked up by the upper bag suction mechanism.
[0008] More preferably, the upper suction bag mechanism includes a suction bag assembly and a vertical displacement assembly. The suction bag assembly is mounted on the vertical displacement assembly. The vertical displacement assembly drives the suction bag assembly to descend to the bag-taking station to suction the uppermost packaging bag located at the bag-taking station. The vertical displacement assembly drives the suction bag assembly with the packaged bag to move upward to a first set height. The support plate of the bag support mechanism moves to below the packaged bag suctioned by the suction bag assembly. The vertical displacement assembly drives the suction bag assembly to descend to a second set height. The support plate supports the packaged bag suctioned by the suction bag assembly.
[0009] More preferably, the bag support drive assembly drives the bag support plate to rotate from the bag picking station side to below the packaging bag that has been picked up and lifted by the upper bag picking mechanism.
[0010] More preferably, the rotation direction of the bag support plate driven by the bag support drive assembly is from the tail of the packaging bag to the opening of the packaging bag.
[0011] More preferably, rotating bushings are provided on both sides of the bag taking station, and a rotating shaft that can rotate relative to the rotating bushing is provided inside the rotating bushing. One end of the bag support plate is fixedly assembled to the upper end of the rotating shaft, and the bag support drive assembly is connected to the lower end of the rotating shaft. The bag support drive assembly drives the rotating shaft to rotate, thereby causing the bag support plate to reciprocate.
[0012] More preferably, the bag support drive assembly includes a swing arm and a drive cylinder. One end of the swing arm is fixed to the rotation shaft, and the other end of the swing arm is hinged to the telescopic end of the drive cylinder. The tail end of the cylinder body of the drive cylinder is hinged to the frame on both sides of the bag picking station.
[0013] More preferably, the swing arm at the bottom of the rotating shaft on the same side of the bag-picking station is connected by a synchronous link. When the drive cylinder drives the swing arm at the bottom of the rotating shaft on the same side of the bag-picking station to swing, the swing arm at the bottom of the rotating shaft on the same side of the bag-picking station swings synchronously under the action of the synchronous link.
[0014] More preferably, the vertical displacement assembly includes a first mounting frame, a first drive motor, and a lead screw; the first mounting frame is mounted on one side of the bag-picking station, the first drive motor is fixedly mounted on the first mounting frame, and the lead screw is rotatably mounted on the first mounting frame; the bag-absorbing assembly includes a suction frame and multiple suction cups disposed on the suction frame; the suction frame and the lead screw are threaded together to form a lead screw-nut pair, the first drive motor is connected to the lead screw for transmission, driving the lead screw to reciprocate, thereby driving the suction frame to move up and down along the lead screw.
[0015] More preferably, the bag storage mechanism is a belt conveyor mechanism, which is equipped with multiple bag bins for placing packaging bags. When the detection photoelectric eye at the bag retrieval station detects that there are no packaging bags in the bag bins at the bag retrieval station, the belt conveyor mechanism moves the bag bins of the adjacent bag retrieval station to the bag retrieval station.
[0016] More preferably, the belt conveyor mechanism has a pusher block on its belt, and the front end of the pusher block forms a bag compartment for placing packaging bags; a baffle for blocking packaging bags is provided at the front end of the belt conveyor mechanism in the forward direction.
[0017] Compared with the prior art, the beneficial technical effects of this utility model are as follows: 1. Compared with existing technologies, this utility model adds bag support mechanisms on both sides of the bag-picking station. These support mechanisms extend below the bag after the upper suction bag mechanism has picked it up and lifted it, supporting the lifted bag. Under the support of these mechanisms, the lower and upper layers of the bag come closer together, closing the bag opening and facilitating the subsequent bag-picking and opening mechanism to smoothly pick up the bag opening. This utility model effectively solves the problem of the lower bag sagging and causing the bag opening to open after the upper suction bag mechanism picks up and lifts a large bag (width greater than 300mm). It ensures the continuity of the bag-picking, bag-picking, and bag-packing processes of the bag-packing machine.
[0018] 2. Compared with the prior art, this utility model is an improved structure of the prior art. Based on the "bag storage device for bagging machine" in the prior art, it is only necessary to add bag support mechanisms on both sides of the bag picking station to complete the upgrade and transformation of the existing bag storage device. This solves the problem that the existing bag storage device cannot be used for large-size packaging bags. The modification structure is simple and easy to upgrade and transform the existing equipment.
[0019] 3. In this utility model, the action coordination between the upper suction bag mechanism and the bag support mechanism is further optimized. Since the lower layer of the bag may droop after being sucked and lifted by the upper suction bag mechanism, this utility model further sets a first preset height to ensure that the height at which the upper suction bag mechanism lifts the bag avoids the movement path of the bag support plate, preventing interference between the lifted bag and the bag support plate. After the bag support plate reaches its position, the upper suction bag mechanism descends to a second preset height. At this point, the bag support plate is located below the bag, providing support for the lower layer of the bag. Essentially, the upper suction bag mechanism places the lifted bag onto the bag support plate, bringing the drooping lower layer of the bag closer to the upper layer, until the bag opening is closed or meets the requirements of the subsequent bag-opening mechanism. This action coordination ensures the stable operation of the bag support mechanism, and the descent of the upper suction bag mechanism ensures that the bag's posture meets the requirements of subsequent processes.
[0020] 4. This utility model further specifies that the movement mode of the bag support plate is a rotational movement mode. This movement mode can save the installation space occupied by the bag support mechanism. If a linear movement mode is adopted, the installation space required to meet the length of the bag support plate will increase the overall space of the bag supply device and also require the addition of a corresponding frame structure. Compared with the rotational movement mode, it will increase the equipment cost.
[0021] 5. This utility model further defines the rotation direction of the bag support plate as rotating from the tail of the packaging bag towards the mouth. Since the upper and lower layers of the bag body at the tail are sealed together, i.e., the tail of the packaging bag is closed, when the packaging bag is lifted, the lower layer of the bag body at the tail droops less, while the lower layer of the bag body at the mouth droops more. When the bag support plate rotates from the tail to the mouth, it can smooth the lower layer of the bag body from the tail to the mouth, which can reduce the lifting height of the upper suction bag mechanism and also avoid interference between the bag support plate and the packaging bag during movement.
[0022] 6. The bag support mechanism of this utility model has a simple structure and is easy to install. When modifying the existing bag storage device, it is only necessary to make holes on the frame on both sides of the bag picking station of the existing bag storage device, and assemble the rotating bushing, rotating shaft, swing arm, drive cylinder and bag support plate to realize the structural upgrade. On the one hand, the modification and upgrade of the existing bag storage device is relatively simple and the structure is simple. The structural setting of the rotating bushing, rotating shaft, swing arm and drive cylinder also ensures the stability of the movement of the bag support plate.
[0023] 7. In this utility model, the swing arm at the bottom of the rotating shaft on the same side of the bag picking station is connected by a synchronous connecting rod. On the one hand, this ensures the consistency and synchronization of the movement of the bag support plate on the same side of the bag picking station. On the other hand, it can reduce the use of drive cylinders, so that one drive cylinder can drive all the rotating shafts on the same side of the bag picking station, thus reducing the cost of parts. Attached Figure Description
[0024] Figure 1 This is a three-dimensional structural diagram of the bag support plate in the initial position of the bag feeding device for the bag-making machine of this utility model; Figure 2 This is a three-dimensional structural diagram of the bag support plate located below the upper suction bag mechanism in the bag feeding device for the bag bagging machine of this utility model; Figure 3 This is a front view of the bag feeding device for the bagging machine of this utility model; Figure 4 This is a left-side view of the bag feeding device for the bagging machine of this utility model; Figure 5 This is a top view of the bag feeding device for the bagging machine of this utility model; Reference numerals in the attached drawings: 1. Bag storage mechanism, 2. Upper bag suction mechanism, 3. Bag retrieval station, 4. Bag support mechanism, 5. Bag support plate, 6. Bag suction assembly, 7. Up and down displacement assembly, 8. Rotating bushing, 9. First mounting frame, 10. Suction frame, 11. Suction cup, 12. Push block, 13. Baffle, 14. Drive cylinder, 15. Swing arm. Detailed Implementation
[0025] 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.
[0026] Example 1 As a preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 1 and attached Figure 2 As shown, this embodiment discloses a bag feeding device for a bagging machine, including a bag storage mechanism 1 and an upper bag suction mechanism 2. The bag storage mechanism 1 is provided with a bag picking station 3. The upper bag suction mechanism 2 is configured to pick up and lift packaging bags one by one from the bag picking station 3 of the bag storage mechanism 1. Bag support mechanisms 4 are provided on both sides of the bag picking station 3. The bag support mechanism 4 includes a plurality of bag support plates 5 and a bag support driving assembly. The bag support driving assembly drives the bag support plates 5 to move below the packaging bags picked up and lifted by the upper bag suction mechanism 2, so as to support the packaging bags picked up by the upper bag suction mechanism 2.
[0027] In this embodiment, bag support mechanisms 4 are added to both sides of the bag-picking station 3. These mechanisms extend below the bag after the upper bag-picking mechanism 2 has picked up and lifted it, supporting the bag. With the support of the bag support mechanisms 4, the lower bag body moves closer to the upper bag body, closing the bag opening and facilitating the subsequent bag-picking and opening mechanism to smoothly pick up and open the bag opening. This invention effectively solves the problem of the lower bag body sagging and causing the bag opening to open after the upper bag-picking mechanism 2 picks up and lifts a large bag (width greater than 300mm). It ensures the continuity of the bag-picking, bag-picking, and bag-packing processes of the bag-packing machine.
[0028] In one embodiment of this invention, the bag support drive assembly is a cylinder. The cylinder drives the bag support plate 5 to reciprocate linearly, extending below the packaging bag being lifted and sucked up by the upper bag suction mechanism 2 to support the packaging bag. When the upper bag suction mechanism 2 descends to suck up the packaging bag in the bag suction station 3, the cylinder drives the bag support plate 5 to retract, avoiding the upper bag suction mechanism 2 and preventing motion interference with it.
[0029] Example 2 As another preferred embodiment of the present invention, this embodiment further supplements and elaborates on the technical solution of the present invention based on the above-described embodiment 1. In this embodiment, the structure of the upper suction bag mechanism 2 and the operational coordination relationship between the upper suction bag mechanism 2 and the bag support mechanism 4 are further supplemented and explained in detail.
[0030] In this embodiment, the upper suction bag mechanism 2 can adopt the same structure as the prior art (CN222646396U). Specifically, the upper suction bag mechanism 2 includes a suction bag assembly 6 and a vertical displacement assembly 7. The suction bag assembly 6 is assembled on the vertical displacement assembly 7. The vertical displacement assembly 7 drives the suction bag assembly 6 to descend to the bag picking station 3 to pick up the uppermost packaging bag located at the bag picking station 3.
[0031] Regarding the operational coordination between the upper suction bag mechanism 2 and the bag support mechanism 4, the specific implementation method of this embodiment is as follows: the upper and lower displacement component 7 drives the suction bag component 6, which has a packaged bag, to move up to the first set height, the support plate of the bag support mechanism 4 moves to below the packaged bag sucked by the suction bag component 6, the upper and lower displacement component 7 drives the suction bag component 6 to descend to the second set height, and the support plate supports the packaged bag sucked by the suction bag component 6.
[0032] Because the lower layer of the bag may droop after being sucked up and lifted by the upper suction bag mechanism 2, this invention further sets a first preset height to ensure that the height at which the upper suction bag mechanism 2 lifts the bag avoids the movement path of the bag support plate 5, preventing interference between the lifted bag and the bag support plate 5. After the bag support plate 5 reaches its position, the upper suction bag mechanism 2 descends to a second preset height. At this point, the bag support plate 5 is located below the bag and can support the lower layer of the bag. This is equivalent to the upper suction bag mechanism 2 placing the lifted bag onto the bag support plate 5, causing the drooping lower layer of the bag to approach the upper layer until the bag opening is closed or meets the requirements of the subsequent bag-opening mechanism. This coordinated action ensures the stable operation of the bag support mechanism 4, and the descent of the upper suction bag mechanism 2 also ensures that the posture of the bag meets the requirements of subsequent processes.
[0033] Example 3 As another preferred embodiment of this utility model, this embodiment further supplements and elaborates on the technical solution of this utility model based on the above-described embodiment 1 or embodiment 2. In this embodiment, the movement mode of the bag support mechanism 4 is supplemented and explained in detail.
[0034] Unlike the embodiment of the cylinder-driven linear reciprocating bag support plate 5 shown in Embodiment 1 above, in this embodiment, refer to the appendix of the specification. Figure 1 and attached Figure 2 As shown, the bag support drive assembly drives the bag support plate 5 to rotate from the bag picking station 3 side to below the packaging bag that is picked up and lifted by the upper bag picking mechanism 2.
[0035] This movement method can save the installation space occupied by the bag support mechanism 4. If the linear movement method shown in Embodiment 1 is adopted, the installation space required to meet the length of the bag support plate 5 will increase the overall space of the bag supply device and also require the addition of a corresponding frame structure. Compared with the rotational movement method, it will increase the equipment cost.
[0036] In another preferred embodiment, the bag support plate 5 is rotated by the bag support drive assembly from the tail of the packaging bag to the opening of the packaging bag. Since the upper and lower layers of the bag body at the tail are sealed together, i.e., the tail of the packaging bag is closed, when the packaging bag is lifted, the lower layer of the bag body at the tail droops less, while the lower layer of the bag body at the opening droops more. When the bag support plate 5 rotates from the tail to the opening, it can smooth the lower layer of the bag body from the tail to the opening, reducing the lifting height of the upper suction bag mechanism 2 and preventing interference between the bag support plate 5 and the packaging bag during movement.
[0037] As another preferred embodiment of this invention, please refer to the appendix to the specification. Figure 1 Appendix Figure 2 and attached Figure 4 As shown, rotating bushings 8 are respectively provided on both sides of the bag taking station 3. A rotating shaft (not shown in the figure) that can rotate relative to the rotating bushing 8 is provided inside the rotating bushing 8. One end of the bag support plate 5 is fixedly assembled to the upper end of the rotating shaft. The bag support drive assembly is connected to the lower end of the rotating shaft. The bag support drive assembly drives the rotating shaft to rotate, causing the bag support plate 5 to reciprocate.
[0038] Furthermore, the bag support drive assembly includes a swing arm 15 and a drive cylinder 14. One end of the swing arm 15 is fixed to the rotating shaft, and the other end of the swing arm 15 is hinged to the telescopic end of the drive cylinder 14. The tail end of the cylinder body of the drive cylinder 14 is hinged to the frame on both sides of the bag taking station 3.
[0039] The bag support mechanism 4 has a simple structure and is easy to install. When it is modified based on the existing bag storage device, it is only necessary to make holes on the frame on both sides of the bag picking station 3 of the existing bag storage device, and install the rotating bushing 8, rotating shaft, swing arm 15, drive cylinder 14 and bag support plate 5 to realize the structural upgrade. On the one hand, the modification and upgrade of the existing bag storage device is relatively simple and the structure is simple. The structural setting of rotating bushing 8, rotating shaft, swing arm 15 and drive cylinder 14 also ensures the stability of the movement of bag support plate 5.
[0040] More preferably, the swing arm 15 at the bottom of the rotating shaft on the same side as the bag-picking station 3 is connected by a synchronous connecting rod (not shown in the figure). When the drive cylinder 14 drives the swing arm 15 at the bottom of the rotating shaft on the same side as the bag-picking station 3 to swing, the swing arm 15 at the bottom of the rotating shaft on the same side as the bag-picking station 3 swings synchronously under the action of the synchronous connecting rod.
[0041] The swing arm 15 at the bottom of the rotating shaft on the same side as the bag picking station 3 is connected by a synchronous link. On the one hand, this ensures the consistency and synchronization of the movement of the bag support plate 5 on the same side as the bag picking station 3. On the other hand, it reduces the use of the drive cylinder 14, so that one drive cylinder 14 can drive all the rotating shafts on the same side as the bag picking station 3, thus reducing the cost of parts.
[0042] 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 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 As shown, the upper suction bag mechanism 2 in this embodiment adopts the existing upper suction bag mechanism 2, which has the same structure. In the attached figure, its specific structure is enclosed in the housing of the first mounting frame 9. Specifically, the upper and lower displacement assembly 7 includes the first mounting frame 9, the first drive motor, and the lead screw. The first mounting frame 9 is assembled on one side of the bag taking station 3. The first drive motor is fixedly assembled on the first mounting frame 9, and the lead screw is rotatably assembled on the first mounting frame 9. The suction bag assembly 6 includes a suction frame 10 and a plurality of suction cups 11 arranged on the suction frame 10. The suction frame 10 is threadedly engaged with the lead screw to form a lead screw nut pair. The first drive motor is connected to the lead screw and drives the lead screw to reciprocate, thereby driving the suction frame 10 to move up and down along the lead screw.
[0043] Furthermore, as one embodiment of this invention, the bag storage mechanism 1 can adopt a conventional bag storage structure in the art, that is, a bag storage structure for placing packaging bags formed by baffles, or a conveying mechanism structure of the prior art (CN222646396U). Specifically, refer to the appendix of the specification. Figure 5 As shown, the bag storage mechanism 1 is a belt conveyor mechanism, which is equipped with multiple bag bins for placing packaging bags. When the detection photoelectric sensor at the bag retrieval station 3 detects that there are no packaging bags in the bag bins at the bag retrieval station 3, the belt conveyor mechanism moves the bag bins of the adjacent bag retrieval station 3 to the bag retrieval station 3. The belt of the belt conveyor mechanism is equipped with push blocks 12, the front end of which forms a bag bin for placing packaging bags; a baffle 13 is provided at the front end of the belt conveyor mechanism in the forward direction to block the packaging bags.
Claims
1. A bag feeding device for a bagging machine, comprising a bag storage mechanism (1) and an upper bag suction mechanism (2), wherein the bag storage mechanism (1) is provided with a bag picking station (3), and the upper bag suction mechanism (2) is configured to pick up and lift packaging bags one by one from the bag picking station (3) of the bag storage mechanism (1); characterized in that: Bag support mechanisms (4) are provided on both sides of the bag picking station (3). The bag support mechanism (4) includes several bag support plates (5) and a bag support drive assembly. The bag support drive assembly drives the bag support plates (5) to move downwards to pick up the bag lifting mechanism (2) and support the bag picked up by the upper bag picking mechanism (2).
2. The bag feeding device for a bagging machine as described in claim 1, characterized in that: The upper suction bag mechanism (2) includes a suction bag assembly (6) and a vertical displacement assembly (7). The suction bag assembly (6) is mounted on the vertical displacement assembly (7). The vertical displacement assembly (7) drives the suction bag assembly (6) to descend to the bag taking station (3) to suck up the uppermost packaging bag located at the bag taking station (3). The vertical displacement assembly (7) drives the suction bag assembly (6) with the packaged bag to move up to the first set height. The support plate of the bag support mechanism (4) moves to the bottom of the packaged bag sucked by the suction bag assembly (6). The vertical displacement assembly (7) drives the suction bag assembly (6) to descend to the second set height. The support plate supports the packaged bag sucked by the suction bag assembly (6).
3. The bag feeding device for a bagging machine as described in claim 1 or 2, characterized in that: The bag support drive assembly drives the bag support plate (5) to rotate from the bag taking station (3) side to below the packaging bag that is being sucked up and lifted by the upper suction bag mechanism (2).
4. The bag feeding device for a bagging machine as described in claim 3, characterized in that: The bag support plate (5) is driven by the bag support drive assembly to rotate in the direction from the tail of the bag to the opening of the bag.
5. The bag feeding device for a bagging machine as described in claim 4, characterized in that: Rotary bushings (8) are provided on both sides of the bag taking station (3). A rotating shaft that can rotate relative to the rotating bushing (8) is provided inside the rotating bushing (8). One end of the bag support plate (5) is fixedly assembled on the upper end of the rotating shaft. The bag support drive assembly is connected to the lower end of the rotating shaft. The bag support drive assembly drives the rotating shaft to rotate, causing the bag support plate (5) to rotate back and forth.
6. The bag feeding device for a bagging machine as described in claim 5, characterized in that: The bag support drive assembly includes a swing arm (15) and a drive cylinder (14). One end of the swing arm (15) is fixed to the rotating shaft, and the other end of the swing arm (15) is hinged to the telescopic end of the drive cylinder (14). The tail end of the cylinder body of the drive cylinder (14) is hinged to the frame on both sides of the bag taking station (3).
7. The bag feeding device for a bagging machine as described in claim 6, characterized in that: The swing arm (15) at the bottom of the rotating shaft on the same side as the bag taking station (3) is connected by a synchronous link. When the driving cylinder (14) drives the swing arm (15) at the bottom of the rotating shaft on the same side as the bag taking station (3) to swing, the swing arm (15) at the bottom of the rotating shaft on the same side as the bag taking station (3) swings synchronously under the action of the synchronous link.
8. The bag feeding device for a bagging machine as described in claim 2, characterized in that: The vertical displacement assembly (7) includes a first mounting frame (9), a first drive motor, and a lead screw; the first mounting frame (9) is mounted on one side of the bag taking station (3), the first drive motor is fixedly mounted on the first mounting frame (9), and the lead screw is rotatably mounted on the first mounting frame (9); the bag suction assembly (6) includes a suction frame (10) and a plurality of suction cups (11) arranged on the suction frame (10); the suction frame (10) is threadedly engaged with the lead screw to form a lead screw nut pair, the first drive motor is connected to the lead screw transmission, and drives the lead screw to reciprocate, thereby driving the suction frame (10) to move up and down along the lead screw.
9. The bag feeding device for a bagging machine as described in claim 1 or 2, characterized in that: The bag storage mechanism (1) is a belt conveyor mechanism. The belt conveyor mechanism is equipped with multiple bag bins for placing packaging bags. When the detection photoelectric eye at the bag picking station (3) senses that there are no packaging bags in the bag bin at the bag picking station (3), the belt conveyor mechanism moves the bag bin of the adjacent bag picking station (3) to the bag picking station (3).
10. The bag feeding device for a bagging machine as described in claim 9, characterized in that: The belt conveyor is provided with a pusher (12) on the belt, and the front end of the pusher (12) forms a bag compartment for placing the packaging bag; a baffle (13) for blocking the packaging bag is provided at the front end of the belt conveyor in the forward direction.