Adjustable outer bag grabbing device

Abstract

The utility model relates to the technical field of inflatable bag production, in particular to an adjustable outer bag grabbing device which comprises a gap bridge belt line, a climbing belt line and an outer bag grabbing mechanism, the gap bridge belt line and the climbing belt line are connected end to end, and an outer bag conveying line is arranged above the input end of the gap bridge belt line. One side of the outer bag conveying line and one side of the climbing belt line are each provided with an outer bag grabbing mechanism, each outer bag grabbing mechanism comprises a rack, vacuum suction cup devices and a distance adjusting lead screw, a mounting cross beam is arranged on the rack, the two vacuum suction cup devices are mounted on the mounting cross beam in parallel, and the distance adjusting lead screw is arranged between any vacuum suction cup device and the mounting cross beam; the distance adjusting screw rod is used for adjusting the distance between the two sets of vacuum suction cup devices, the distance adjusting screw rod is arranged to flexibly adjust the distance between the two sets of vacuum suction cup devices, the limitation of a traditional grabbing device in coping with outer bags of different specifications is effectively solved, the working efficiency of the production link is remarkably improved, and the labor intensity and the cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of inflatable bag production, and particularly relates to an adjustable outer bag grabbing device. Background Technique

[0002] In the fields of modern logistics and packaging, inflatable buffer bags emerge as an important protective packaging material. With the rapid development of the e-commerce industry, the demand for protecting goods during transportation is increasing day by day. Traditional packaging materials, such as foams and pulp, have many problems. Foam materials are not easily degradable, causing great pressure on the environment; pulp materials have limited buffering effects and high costs. Against this background, inflatable buffer bags have gradually attracted attention due to their unique advantages. Inflatable buffer bags are usually made of high-strength plastic films and form a structure with certain elasticity and buffering ability through inflation.

[0003] In traditional inflatable bag production, the distance between the outer bag grabbing devices is often fixed, making it difficult to adapt to outer bags of different specifications and sizes. This leads to the need to frequently replace the grabbing devices when producing multiple types of inflatable bags, which not only increases the complexity of operation but also reduces production efficiency. For example, in the production of small inflatable bags, if the distance between the grabbing devices is too large, it may not be possible to stably grab the outer bag, easily causing position deviation and affecting subsequent processing procedures. In the production of large inflatable bags, grabbing devices with too small a distance cannot effectively cover the grabbing range of the outer bag, resulting in insecure grabbing or even inability to grab. In addition, as the market's demand for diversified inflatable bags continues to increase, the production line needs to be able to quickly switch the production of different specifications of products. Fixed-distance grabbing devices cannot meet this flexible production requirement, increasing the time cost of production line adjustment and preparation.

[0004] Therefore, there is an urgent need for an outer bag grabbing device with a flexibly adjustable distance that can adapt to inflatable bags of different specifications and sizes. Content of the Utility Model

[0005] In view of the above problems, the utility model provides an adjustable outer bag grabbing device. Two groups of vacuum suction cup devices are installed in parallel on the installation cross beam, and an adjustable distance screw rod is arranged between one group of vacuum suction cup devices and the installation cross beam. The adjustable distance screw rod flexibly adjusts the distance between the two groups of vacuum suction cup devices. This innovative design of the adjustable outer bag grabbing device effectively solves the limitations of traditional grabbing devices when dealing with outer bags of different specifications, significantly improves the working efficiency of the production process, reduces labor intensity and costs, avoids frequent replacement and debugging caused by mismatched grabbing devices, greatly shortens the production preparation time, and does not require a dedicated grabbing device for each specification of outer bag, reducing the equipment purchase and maintenance costs.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] An adjustable outer bag grasping device, comprising a bridge conveyor belt line, a climbing conveyor belt line and an outer bag grasping mechanism;

[0008] The bridge conveyor belt line and the climbing conveyor belt line are arranged end to end. An outer bag conveyor line is arranged above the input end of the bridge conveyor belt line. The outer bag grasping mechanism is arranged on one side of both the outer bag conveyor line and the climbing conveyor belt line;

[0009] The outer bag grasping mechanism includes a frame, a vacuum suction cup device and an adjustable distance screw rod. An installation cross beam is arranged on the frame. Two groups of the vacuum suction cup devices are installed in parallel on the installation cross beam. The adjustable distance screw rod is arranged between any one group of the vacuum suction cup devices and the installation cross beam, and the adjustable distance screw rod adjusts the distance between the two groups of the vacuum suction cup devices.

[0010] As an improvement, the vacuum suction cup device includes a slide rail, a fixed plate, a driving cylinder group and a vacuum suction cup group. The slide rail is installed on the installation cross beam through the fixed plate. The driving cylinder group is slidably installed on the slide rail through a slide table. The driving cylinder group moves horizontally along the length direction of the slide rail. The vacuum suction cup group is installed on the output end of the driving cylinder group, and the vacuum suction cup group moves up and down vertically along with the driving cylinder group.

[0011] As an improvement, the vacuum suction cup group includes a fixed block, a connecting plate and several groups of vacuum suction cups. The fixed block is fixedly installed at one end of the connecting plate. The vacuum suction cups are installed at the other end of the connecting plate. The vacuum suction cups are arranged at equal intervals along the length direction of the connecting plate, and grooves are formed between adjacent vacuum suction cups.

[0012] As an improvement, guide rail assemblies are arranged at the joints of both ends of the two fixed plates and the installation cross beam. The guide rail assemblies include guide rails, guide rail fixing plates, sliders and right-angle connectors. The guide rails are fixedly installed on the installation cross beam through the guide rail fixing plates. The sliders are fixedly installed on the fixed plates through the right-angle connectors, and the sliders are slidably arranged along the length direction of the guide rails.

[0013] As an improvement, the adjustable distance screw rod includes a screw rod fixing plate, a driving motor, a motor integrated seat, a nut seat, a screw rod, an installation seat and a screw rod nut. The screw rod fixing plate and the driving motor are fixed on the installation cross beam. The motor integrated seat and the nut seat are both installed on the screw rod fixing plate. The installation seat is installed on one side of the vacuum suction cup device. The screw rod sequentially passes through the motor integrated seat, the installation seat and the nut seat. The screw rod nut is sleeved on the screw rod, and the screw rod nut passes through the installation seat. The driving motor drives the screw rod to rotate.

[0014] As an improvement, a material pressing device is arranged between the two vacuum suction cup devices. The material pressing device is installed on the installation cross beam and is arranged above the plane of the machine frame.

[0015] As an improvement, the outer bag grasping mechanism further includes a bag pressing device. The bag pressing device is installed on the installation cross beam and extends from the installation cross beam to one side of the outer bag conveying line. The bag pressing device includes a fixed frame, a connecting rod, a cylinder, a bag pressing unit and a suction cup unit. The fixed frame is installed on the installation cross beam. The connecting rod is hinged to the fixed frame. One end of the connecting rod is connected to the cylinder. The other end of the connecting rod is provided with the bag pressing unit and the suction cup unit. The cylinder is installed on the fixed frame. The cylinder is connected to the connecting rod through a connecting piece. The output end of the cylinder is hinged to the connecting piece. The connecting piece is fixedly installed on the connecting rod.

[0016] As an improvement, a hole punching device is further arranged on the machine frame. The hole punching device includes a hole opener, a hole punching plate, an upper suction cup group and a lower suction cup group. The hole opener is installed on the installation cross beam. The hole punching plate is correspondingly arranged below the hole opener. The hole punching plate is provided with a punching groove. The upper suction cup group is installed on the installation cross beam. The lower suction cup group is installed on the bottom surface of the machine frame platform. The machine frame platform is provided with installation holes corresponding to the lower suction cup group.

[0017] The beneficial effects of the present utility model are as follows:

[0018] (1) In the present utility model, two groups of vacuum suction cup devices are installed in parallel on the installation cross beam. A distance adjusting screw rod is arranged between one group of vacuum suction cup devices and the installation cross beam. The distance adjusting screw rod can flexibly adjust the distance between the two groups of vacuum suction cup devices. This innovative design of the adjustable outer bag grasping device effectively solves the limitations of the traditional grasping device when dealing with outer bags of different specifications, significantly improves the working efficiency of the production link, reduces the labor intensity and cost, avoids frequent replacement and debugging caused by the mismatch of the grasping device, greatly shortens the production preparation time, and there is no need to equip a special grasping device for each specification of outer bag, reducing the equipment purchase and maintenance costs;

[0019] (2) In the present utility model, the vacuum suction cup device is installed on the installation cross beam through a fixing plate. A guide rail assembly is arranged between the fixing plate and the installation cross beam. The guide rail assembly can ensure the accurate and stable sliding of the fixing plate on the installation cross beam, effectively reducing the direct friction between the fixing plate and the installation cross beam, reducing the wear degree of the components, extending the service life of the device. The guide rail assembly can share the load borne by the vacuum suction cup device during operation, making the whole structure more stable and reliable. When grasping a heavier outer bag, it can ensure the stability of the device and avoid shaking or dislocation.

[0020] (3) In the present utility model, a bag pressing device is provided above the belt line. The bag pressing device drives a connecting rod hinged to a fixed frame through a cylinder. The connecting rod drives the bottom bag pressing unit and the suction cup unit to separate multiple stacked outer bags. After separation, the outer bags are arranged more conveniently for the vacuum suction cup device to pick up materials in sequence, avoiding chaos and incorrect grasping, improving the accuracy and stability of the entire production process, realizing the automation of the outer bag separation and material picking process, reducing manual intervention, improving the production efficiency and quality consistency, and reducing the labor intensity of workers.

[0021] In summary, the present utility model has the advantages of strong adjustability, efficient separation and orderly material picking, and improved production efficiency, and is particularly suitable for the technical field of inflatable bag production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional assembly structure schematic diagram of the outer bag grasping device of the present utility model;

[0023] Figure 2 is a three-dimensional structure schematic diagram of the outer bag grasping device of the present utility model Figure 1 ;

[0024] Figure 3 is a three-dimensional structure schematic diagram of the outer bag grasping device of the present utility model Figure 1 ;

[0025] Figure 4 is Figure 3 an enlarged view of part A in

[0026] Figure 5 is a three-dimensional structure schematic diagram of the vacuum suction cup device of the present utility model;

[0027] Figure 6 is a three-dimensional structure schematic diagram of the vacuum suction cup group of the present utility model;

[0028] Figure 7 is a three-dimensional structure schematic diagram of the distance-adjusting lead screw of the present utility model;

[0029] Figure 8 is a three-dimensional structure schematic diagram of the bag pressing device of the present utility model;

[0030] Figure 9 is a three-dimensional structure schematic diagram of the lower suction cup group of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0034] Embodiment:

[0035] As Figures 1 to 9 shown, an adjustable outer bag grasping device includes:

[0036] a bridge conveyor belt line 1, a climbing conveyor belt line 2, and an outer bag grasping mechanism 3;

[0037] The bridge conveyor belt line 1 and the climbing conveyor belt line 2 are connected end to end. An outer bag conveyor line 11 is arranged above the input end of the bridge conveyor belt line 1. The outer bag grasping mechanism 3 is arranged on one side of both the outer bag conveyor line 11 and the climbing conveyor belt line 2;

[0038] The outer bag grasping mechanism 3 includes a frame 31, a vacuum suction cup device 32 and an adjustable screw 33. An installation cross beam 311 is provided on the frame 31. Two groups of the vacuum suction cup devices 32 are installed in parallel on the installation cross beam 311. The adjustable screw 33 is arranged between any one group of the vacuum suction cup devices 32 and the installation cross beam 311. The adjustable screw 33 adjusts the distance between the two groups of the vacuum suction cup devices 32. When facing outer bags of different sizes, the distance between the two groups of vacuum suction cup devices 32 can be quickly adjusted through the adjustable screw 33 to achieve the best grasping effect. This adjustable design greatly enhances the versatility and adaptability of the outer bag grasping mechanism 3, can meet the grasping requirements of various different specifications of outer bags, and improves the working efficiency and flexibility of the entire system.

[0039] It should be noted that the cross-belt line 1, the climbing belt line 2, the outer bag conveyor line 11, the slide rail 321 and the slide table 325 belong to the prior art and will not be elaborated here.

[0040] Furthermore, the vacuum suction cup device 32 includes a slide rail 321, a fixing plate 322, a driving cylinder group 323 and a vacuum suction cup group 324. The slide rail 321 is installed on the installation cross beam 311 through the fixing plate 322. The driving cylinder group 323 is slidably installed on the slide rail 321 through a slide table 325. The driving cylinder group 323 moves horizontally along the length direction of the slide rail 321. The vacuum suction cup group 324 is installed on the output end of the driving cylinder group 323. The vacuum suction cup group 324 moves up and down vertically along with the driving cylinder group 323.

[0041] It should be noted that the driving cylinder group 323 is composed of a first cylinder and a second cylinder. The first cylinder is connected to the slide table 325. In actual operation, since there may be a height difference between the outer bag conveyor line 11 and the plane of the frame 31, the first cylinder can effectively make up for this gap. When the height of the outer bag conveyor line 11 is higher than the plane of the frame 31, the first cylinder extends and pushes the second cylinder connected thereto to a suitable height to ensure the smooth progress of subsequent grasping work. The second cylinder is installed at the output end of the first cylinder. The second cylinder controls the vacuum suction cup group 324 to move up and down vertically to suck the outer bag. When facing outer bags of different specifications, the second cylinder can ensure sufficient contact between the vacuum suction cup group 324 and the outer bag and generate sufficient adsorption force by adjusting the descending height of the vacuum suction cup group 324. This design of the driving cylinder group 323 with the coordinated cooperation of the first cylinder and the second cylinder not only improves the accuracy and stability of outer bag grasping, but also enhances the adaptability of the entire system to different working conditions and outer bag specifications.

[0042] Furthermore, the vacuum suction cup group 324 includes a fixing block 3241, a connecting plate 3242, and several groups of vacuum suction cups 3243. The fixing block 3241 is fixedly installed at one end of the connecting plate 3242, and the vacuum suction cups 3243 are installed at the other end of the connecting plate 3242. The vacuum suction cups 3243 are arranged equidistantly along the length direction of the connecting plate 3242. The equidistant arrangement ensures that when grasping the outer bag, the adsorption force can be evenly applied, thereby improving the stability and reliability of grasping. A groove 3244 is formed between adjacent vacuum suction cups 3243.

[0043] It should be noted that the setting of the groove 3244 can reduce the overall weight of the vacuum suction cup group 324 and the operation burden of the equipment. On the other hand, when grasping the outer bag, the groove 3244 can provide a certain deformation space for the outer bag to prevent the outer bag from being damaged due to excessive extrusion. The fixing block 3241 can also play a role in transmitting force and dispersing stress.

[0044] In addition, when the vacuum suction cup group 324 moves rapidly and performs the grasping action along with the driving cylinder group 323, the fixing block 3241 can withstand large impact forces and tensile forces, so that the connecting plate 3242 will not fall off or deform easily. When the vacuum suction cup 3243 adsorbs the outer bag and generates a tensile force, the fixing block 3241 can evenly transmit these forces to the connecting plate 3242 and disperse them throughout the structure, avoiding component damage caused by local stress concentration.

[0045] Specifically, guide rail assemblies 326 are provided at the connections between the two ends of the fixing plates 322 and the mounting cross beam 311. The guide rail assemblies 326 include guide rails 3261, guide rail fixing plates 3262, sliders 3263, and right-angle connectors 3264. The guide rails 3261 are fixedly installed on the mounting cross beam 311 through the guide rail fixing plates 3262. The sliders 3263 are fixedly installed on the fixing plates 322 through the right-angle connectors 3264. The sliders 3263 are slidably arranged along the length direction of the guide rails 3261. When the distance-adjusting screw rod 33 drives the vacuum suction cup device 32 to adjust its position, the vacuum suction cup device 32 can slide precisely and smoothly. The guide rail assemblies 326 can effectively reduce the friction force, making the movement of the fixing plates 322 easier and more flexible, improving the response speed and working efficiency of the system. On the other hand, the cooperation between the guide rails 3261 and the sliders 3263 can ensure that the movement trajectory of the fixing plates 322 always remains straight, thereby improving the accuracy and stability of the position adjustment of the vacuum suction cup device 32.

[0046] In addition, the distance-adjusting lead screw 33 includes a lead screw fixing plate 331, a driving motor 332, a motor integral seat 333, a nut seat 334, a lead screw 335, a mounting seat 336 and a lead screw nut 337. The lead screw fixing plate 331 and the driving motor 332 are fixed on the mounting cross beam 311. The motor integral seat 333 and the nut seat 334 are both mounted on the lead screw fixing plate 331. The mounting seat 336 is mounted on one side of the vacuum suction cup device 32. The lead screw 335 sequentially passes through the motor integral seat 333, the mounting seat 336 and the nut seat 334. The lead screw 335 is preferably a ball screw. A lead screw nut 337 is sleeved on the lead screw 335. The lead screw nut 337 passes through the mounting seat 336. The driving motor 332 drives the lead screw 335 to rotate, and the lead screw nut 337 will move along the axial direction of the lead screw 335, thereby driving the mounting seat 336 and the vacuum suction cup device 32 connected thereto to move, so as to realize the adjustment of the distance between the two groups of vacuum suction cup devices 32.

[0047] In addition, a material pressing device 34 is arranged between the two vacuum suction cup devices 32 on both sides. The material pressing device 34 is mounted on the mounting cross beam 311. The material pressing device 34 is arranged above the plane of the frame 31. The material pressing device 34 limits the outer bag laid on the plane of the frame 31 to prevent the outer bag from deforming or deviating in position during the processing, and provides stable and reliable conditions for subsequent precise processing steps.

[0048] Moreover, the outer bag grasping mechanism 3 further includes a bag pressing device 35. The bag pressing device 35 is mounted on the mounting cross beam 311. The bag pressing device 35 extends from the mounting cross beam 311 to one side of the outer bag conveying line 11. The bag pressing device 35 includes a fixing frame 351, a connecting rod 352, a cylinder 353, a bag pressing unit 354 and a suction cup unit 355. The fixing frame 351 is mounted on the mounting cross beam 311. The connecting rod 352 is hinged to the fixing frame 351. One end of the connecting rod 352 is connected to the cylinder 353. The cylinder 353 provides power for the movement of the connecting rod 352. When the cylinder 353 expands and contracts, the connecting rod 352 is driven to rotate around the hinge point with the fixing frame 351 through a connecting member 356. The other end of the connecting rod 352 is provided with the bag pressing unit 354 and the suction cup unit 355. The cylinder 353 is mounted on the fixing frame 351. The cylinder 353 is connected to the connecting rod 352 through the connecting member 356. The output end of the cylinder 353 is hinged to the connecting member 356. The connecting member 356 is fixedly mounted on the connecting rod 352. When multiple outer bags are conveyed and processed simultaneously, the bag pressing device 35 mainly plays a role in separating and sorting, preventing interference and entanglement between the outer bags.

[0049] Further, a hole punching device 36 is also provided on the frame 31. The hole punching device 36 includes a hole opener 361, a hole punching plate 362, an upper suction cup group 363 and a lower suction cup group 364. The hole opener 361 is installed on the installation cross beam 311. A corresponding hole punching plate 362 is arranged below the hole opener 361. An opening groove 3621 is formed on the hole punching plate 362. The opening groove 3621 on the hole punching plate 362 cooperates with the hole opener 361, providing guidance and support for the hole punching process, which helps to improve the quality and efficiency of hole punching. The upper suction cup group 363 is installed on the installation cross beam 311, and the lower suction cup group 364 is installed on the bottom surface of the platform of the frame 31. When performing the hole punching operation, the upper suction cup group 363 and the lower suction cup group 364 work together to firmly adsorb the outer bag, keeping it in a fixed position during the hole punching process, preventing the outer bag from moving or deforming, so as to ensure the accuracy and consistency of hole punching. An installation hole is provided on the platform of the frame 31 corresponding to the lower suction cup group 364, and the setting of the installation hole enables the adsorption effect of the lower suction cup group 364 to be transmitted to the outer bag more directly and effectively.

[0050] Furthermore, the hole punching plate 362 is driven by a rotary cylinder. When the upper suction cup group 363 and the lower suction cup group 364 respectively adsorb the upper and lower surfaces of the outer bag, the hole punching plate 362 rotates and extends into the outer bag. The hole punching plate 362 cooperates with the hole opener 361 to punch a hole on one side of the outer bag.

[0051] Working process: First, the outer bags are respectively transported to one side of the outer bag grabbing mechanism 3 corresponding to the outer bag conveying line 11 and the climbing belt line 2. The bag pressing device 35 separates and arranges multiple outer bags. The distance adjusting screw rod 33 adjusts the distance between the two groups of vacuum suction cup devices 32 according to the size of the outer bag to achieve the best grabbing effect. The driving cylinder group 323 in the outer bag grabbing mechanism 3 drives the vacuum suction cup group 324 to move to a suitable position through the sliding table 325. The vacuum suction cups 3243 in the vacuum suction cup group 324 adsorb the outer bag through negative pressure. After grabbing the outer bag, the vacuum suction cup group 324 moves with the driving cylinder group 323 and places the outer bag on the platform of the frame 31. The material pressing device 34 fixes and limits the outer bag laid on the platform of the frame 31. When a hole punching operation needs to be performed on the outer bag, the upper suction cup group 363 and the lower suction cup group 364 respectively adsorb the upper and lower surfaces of the outer bag, and the rotary cylinder drives the hole punching plate 362 to rotate and extend into the outer bag, and cooperates with the hole opener 361 to complete the hole punching.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An adjustable outer bag grabbing device, characterized in that: include: A bridge belt line (1), a climbing belt line (2) and an outer bag grabbing mechanism (3); The bridge belt line (1) and the climbing belt line (2) are arranged end to end, an outer bag conveyor line (11) is arranged above the input end of the bridge belt line (1), and the outer bag conveyor line (11) and one side of the climbing belt line (2) are both provided with the outer bag grabbing mechanism (3); The outer bag grabbing mechanism (3) comprises a frame (31), a vacuum suction cup device (32) and a distance-adjusting screw (33); a mounting crossbeam (311) is provided on the frame (31); two groups of the vacuum suction cup devices (32) are mounted in parallel on the mounting crossbeam (311); a distance-adjusting screw (33) is provided between any group of the vacuum suction cup devices (32) and the mounting crossbeam (311); and the distance-adjusting screw (33) adjusts the distance between the two groups of the vacuum suction cup devices (32).

2. The adjustable outer bag grabbing device according to claim 1, characterized in that: The vacuum suction cup device (32) comprises a slide rail (321), a fixing plate (322), a driving cylinder group (323) and a vacuum suction cup group (324); the slide rail (321) is mounted on the mounting crossbeam (311) via the fixing plate (322); the driving cylinder group (323) is slidably mounted on the slide rail (321) via a slide table (325); the driving cylinder group (323) moves horizontally along the length direction of the slide rail (321); the vacuum suction cup group (324) is mounted on the output end of the driving cylinder group (323); and the vacuum suction cup group (324) moves up and down in the vertical direction along with the driving cylinder group (323).

3. The adjustable outer bag grabbing device according to claim 2, characterized in that: The vacuum suction cup group (324) comprises a fixed block (3241), a connecting plate (3242) and a plurality of groups of vacuum suction cups (3243); the fixed block (3241) is fixedly mounted on one end of the connecting plate (3242); the vacuum suction cups (3243) are mounted on the other end of the connecting plate (3242); the vacuum suction cups (3243) are equidistantly arranged along the length direction of the connecting plate (3242); and grooves (3244) are provided between adjacent vacuum suction cups (3243).

4. The adjustable outer bag grabbing device according to claim 2, characterized in that: Guide rail assemblies (326) are provided at the connection points between the two ends of the fixing plates (322) on both sides and the mounting crossbeam (311); the guide rail assemblies (326) comprise guide rails (3261), guide rail fixing plates (3262), sliders (3263) and right-angle connectors (3264); the guide rails (3261) are fixedly mounted on the mounting crossbeam (311) via the guide rail fixing plates (3262); the sliders (3263) are fixedly mounted on the fixing plates (322) via the right-angle connectors (3264); and the sliders (3263) are slidably arranged along the length direction of the guide rails (3261).

5. The adjustable outer bag grabbing device according to claim 1, characterized in that: The pitch-adjustable screw (33) comprises a screw fixing plate (331), a drive motor (332), a motor integrated seat (333), a nut seat (334), a screw (335), a mounting seat (336) and a screw nut (337); the screw fixing plate (331) and the drive motor (332) are fixed on the mounting crossbeam (311); the motor integrated seat (333) and the nut seat (334) are both mounted on the screw fixing plate (331). ), the mounting seat (336) is mounted on one side of the vacuum suction cup device (32), the screw rod (335) is sequentially inserted through the motor integrated seat (333), the mounting seat (336) and the nut seat (334), the screw rod (335) is sleeved with the screw rod nut (337), the screw rod nut (337) is inserted through the mounting seat (336), and the driving motor (332) drives the screw rod (335) to rotate.

6. The adjustable outer bag grabbing device according to claim 1, characterized in that: A material pressing device (34) is provided between the vacuum suction cup devices (32) on both sides. The material pressing device (34) is installed on the installation crossbeam (311). The material pressing device (34) is arranged above the plane of the frame (31).

7. The adjustable outer bag grabbing device according to claim 1, characterized in that: The outer bag grabbing mechanism (3) further comprises a bag pressing device (35), wherein the bag pressing device (35) is mounted on the mounting crossbeam (311), and the bag pressing device (35) is extended from the mounting crossbeam (311) toward one side of the outer bag conveying line (11), and the bag pressing device (35) comprises a fixing frame (351), a connecting rod (352), a cylinder (353), a bag pressing unit (354) and a suction cup unit (355), wherein the fixing frame (351) is mounted on the mounting crossbeam (311), and the connecting rod (352) is connected to the fixing frame (351). The frame (351) is hingedly arranged, one end of the connecting rod (352) is connected to the cylinder (353), the other end of the connecting rod (352) is installed with the bag pressing unit (354) and the suction cup unit (355), the cylinder (353) is installed on the fixed frame (351), the cylinder (353) and the connecting rod (352) are connected via a connecting piece (356), the output end of the cylinder (353) is hinged to the connecting piece (356), and the connecting piece (356) is fixedly installed on the connecting rod (352).

8. The adjustable outer bag grabbing device according to claim 1, characterized in that: The frame (31) is also provided with a hole-taking device (36), the hole-taking device (36) comprising a hole opener (361), a hole-taking plate (362), an upper suction cup group (363) and a lower suction cup group (364); the hole opener (361) is mounted on the mounting crossbeam (311); the hole-taking plate (362) is correspondingly arranged below the hole opener (361); a hole-opening groove (3621) is provided on the hole-taking plate (362); the upper suction cup group (363) is mounted on the mounting crossbeam (311); the lower suction cup group (364) is mounted on the bottom surface of the frame (31) platform; and the frame (31) platform is provided with a mounting hole corresponding to the lower suction cup group (364).

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