Four-station bag feeding and packaging machine

Abstract

The utility model discloses a four station bag feeding packaging machine relates to packaging mechanical technical field. The utility model discloses four station bag feeding packaging machine compares with existing bag feeding packaging machine, has four groups of clamping components, and the rotating disc is four division rotating disc, and four groups of clamping components correspond four stations, and respectively are bagging station, open bag unloading station, third station and seal discharge station, the utility model integrates open bag and unloading in a station, and the relevant parts of bagging component are omitted, and the equipment cost is reduced to seal and discharge integration in a station, and the integration of station makes bag feeding packaging machine can be more miniaturized, and the floor area is smaller, and the frame cost is saved, and the requirement of small and medium-sized enterprise to bag feeding packaging machine miniaturization, low cost is satisfied.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and more specifically to a four-station bag feeding and packaging machine. Background Technology

[0002] Currently, a common bag packaging machine (such as CN215044158U, CN221938508U, etc.) mainly consists of a base, a rotating sleeve, a rotating disk, and other components. The rotating sleeve is rotatably mounted on the base, the rotating disk is fixed to the upper end of the rotating sleeve, and the drive component inside the base can drive the rotating sleeve to rotate. The rotating disk is equipped with multiple sets of clamping components for holding pre-made packaging bags (generally 8, 10, 12, etc.). Around the base, bag loading, bag opening, material feeding, bag sealing, and material discharge components are arranged in sequence. A bag supporting shaft is coaxially mounted inside the rotating sleeve. A bag supporting component is fixedly mounted on the upper end of the bag supporting shaft. After the bag opening component opens the bag opening of the pre-made packaging bag held by the clamping component, the bag supporting shaft moves down so that the bag supporting component is inserted into the bag opening of the opened pre-made packaging bag. Then, the bag supporting component moves to open the pre-made packaging bag and rotates with the clamping component to below the material feeding component. When the material feeding component's hopper is inserted into the opened pre-made packaging bag, the bag supporting component is pulled out of the pre-made packaging bag and reset.

[0003] The existing bag packaging machine works as follows: pre-made packaging bags are stored in a bag bin corresponding to the bag feeding mechanism. The bag picking mechanism removes the pre-made packaging bags one by one from the bag bin. The bag feeding mechanism then transfers the pre-made packaging bags taken out by the bag picking mechanism to a clamping assembly on a rotating disk. As the rotating disk rotates, the clamping assembly transfers the pre-made packaging bag to the bag opening mechanism (bag opening station). The bag opening mechanism uses its suction cups to suction the bag body from both sides of the pre-made packaging bag opening, thus opening the bag opening. Then, the bag opening machine... The bag-opening mechanism is inserted into the pre-made packaging bag with the opening already opened, and expands the pre-made packaging bag. The bag-opening mechanism rotates at the same speed as the turntable, and transfers the pre-made packaging bag to the position of the unloading mechanism (unloading station). The lower end of the unloading hopper of the unloading mechanism is inserted into the expanded packaging bag, ready for unloading. At this time, the bag-opening component is pulled out of the pre-made packaging bag, and then resets and moves above the bag-opening mechanism. After the unloading is completed, the turntable continues to drive the pre-made packaging bag to be sealed by the sealing mechanism, and then discharged through the discharge component, completing the material filling of the pre-made packaging bag.

[0004] Currently, all bag-making packaging machines on the market are manufactured using the aforementioned structural principles, resulting in large equipment size and high manufacturing costs. For micro and small processing enterprises, purchasing an 8-station, 10-station, or 12-station bag-making packaging machine is costly and can easily lead to overcapacity, failing to leverage its advantages. This is a burden for micro and small processing enterprises. While some semi-automatic packaging equipment on the market has lower costs, its efficiency cannot meet the needs of processing enterprises, still requiring high labor costs. Therefore, there is an urgent need to optimize the structure of existing bag-making packaging machines to make them smaller and lower in cost, in order to meet the packaging needs of micro and small enterprises. Utility Model Content

[0005] To overcome the defects and shortcomings of the existing technology, this utility model provides a four-station bag-feeding packaging machine. The purpose of this invention is to optimize the structure of existing bag-feeding packaging machines, making them more compact and reducing their manufacturing costs to meet the needs of micro and small enterprises for miniaturized and low-cost equipment. Compared with existing bag-feeding packaging machines, this four-station bag-feeding packaging machine has four sets of clamping components and a four-index rotating disc. The four sets of clamping components correspond to four stations: bag loading station, bag opening and unloading station, third station, and sealing and unloading station. This utility model integrates bag opening and unloading into one station, eliminating the related parts of the bag-supporting components, reducing equipment costs. Furthermore, integrating sealing and unloading into one station allows for a more compact bag-feeding packaging machine with a smaller footprint, saving frame costs and meeting the requirements of micro and small enterprises for miniaturized and low-cost bag-feeding packaging machines.

[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 four-station bag packaging machine, including a frame, a base, a rotating sleeve, a rotating disk, a bag bin, a bag picking mechanism, a bag feeding mechanism, a bag opening mechanism, a lifting hopper, a first clamping mechanism, a second clamping mechanism, and a sealing mechanism; the base is set on the frame, the rotating sleeve is rotatably mounted on the base, the rotating disk is fixed to the upper end of the rotating sleeve, and a turntable drive assembly for driving the rotating disk to rotate is provided inside the base;

[0008] On the rotating disk, four sets of clamping components for clamping pre-made packaging bags are arranged radially along the circumference with the center of the rotating disk as the center. The rotating disk is set with four workstations corresponding to the four divisions, and each set of clamping components corresponds to one workstation. The workstations are switched cyclically as the rotating disk rotates.

[0009] The bag compartment, bag picking mechanism and bag loading mechanism are mounted on the frame outside the first station, and the first clamping mechanism is mounted on the base inside the first station. The first clamping mechanism acts on the clamping assembly that rotates to the first station to open its bag clamping claws.

[0010] The lifting hopper and the bag opening mechanism are mounted on the frame outside the second station. The bag opening mechanism is configured to open the bag opening of the pre-made packaging bag held on the clamping assembly that has been rotated to the second station by using the relative moving away action of the first suction cup and the second suction cup. The lifting hopper moves down so that its lower end is inserted into the pre-made packaging bag with the bag opening opened.

[0011] The sealing mechanism is mounted on the frame outside the fourth station and is used to heat seal the opening of the pre-made packaging bag held by the clamping assembly that has rotated to the fourth station. A discharge chute is provided below the sealing mechanism. The second clamping mechanism is mounted on the base on the inside of the fourth station. The second clamping mechanism acts on the clamping assembly that has rotated to the fourth station to open its bag clamping claws. The sealed pre-made packaging bag falls onto the discharge chute and is discharged through the discharge chute.

[0012] In a further preferred embodiment, the lifting hopper is connected to the lifting drive assembly via a first connecting arm, and the lifting drive assembly drives the lifting hopper to rise and fall.

[0013] More preferably, the lifting drive assembly includes a lifting mounting base, a lifting drive component, a mounting connecting frame, and a guide shaft; the lifting mounting base is fixedly mounted on the frame, the lifting drive component is mounted on the lifting mounting base, the telescopic end of the lifting drive component is connected to the mounting connecting frame, the upper end of the guide shaft is fixedly connected to the mounting connecting frame, the lower end of the guide shaft is slidably engaged with a guide shaft sleeve fixedly mounted on the lifting mounting base, and the first connecting arm is mounted on the mounting connecting frame.

[0014] More preferably, the four-station bag packaging machine also includes a second lifting hopper, which is positioned above the pre-made packaging bag held by the clamping assembly that has rotated to the third station.

[0015] More preferably, the lifting hopper and the second lifting unloading hopper are both driven by the same lifting drive assembly; the lifting hopper is connected to the lifting drive assembly via a first connecting arm, and the second lifting unloading hopper is connected to the lifting drive assembly via a second connecting arm.

[0016] In a further preferred embodiment, the four-station bag packaging machine also includes an electrical box, which is located on the outside of the frame corresponding to the first station.

[0017] More preferably, the electrical box is concave, and the bag compartment and the bag retrieval mechanism are respectively arranged in the groove formed by the electrical box; the bag retrieval mechanism is located below the bag compartment; a touch screen is provided on the top of the electrical box on one side of the bag compartment.

[0018] More preferably, the bag opening mechanism includes a bag opening mounting base, a bag opening servo motor assembly, a first bag opening arm, a second bag opening arm, a first suction cup, and a second suction cup. The bag opening mounting base is mounted on the frame, the bag opening servo motor assembly is fixedly mounted on the bag opening mounting base, the upper end of the first bag opening arm is mounted on the output shaft of the bag opening servo motor assembly, the upper end of the second bag opening arm is rotatably mounted on the bag opening mounting base, a first swing arm extending towards the second bag opening arm is provided on the connection end of the first bag opening arm connected to the bag opening servo motor assembly, and a second swing arm extending towards the first bag opening arm is provided on the connection end of the second bag opening arm rotatably connected to the bag opening mounting base. The first swing arm and the second swing arm are connected by a transmission link, one end of which is hinged to the first swing arm, and the other end of which is hinged to the second swing arm. The first suction cup is fixedly mounted on the lower end of the first bag opening arm, and the second suction cup is fixedly mounted on the lower end of the second bag opening arm.

[0019] More preferably, the first clamping mechanism includes a first mounting support, a first transmission arm, a clamping connecting rod, a clamping swing arm, a clamping servo motor assembly, and a clamping push plate. The first mounting support is fixedly mounted on the base. The first transmission arm includes a first connecting part, a second connecting part, and a shaft connection part. The shaft connection part is located between the first connecting part and the second connecting part and is triangularly distributed. The shaft connection part is rotatably mounted on the first mounting support via a rotating shaft. The clamping push plate is mounted on the first connecting part. The clamping swing arm is mounted on the output shaft of the clamping servo motor assembly. The lower end of the clamping connecting rod is hinged to the clamping swing arm, and the upper end of the clamping connecting rod is hinged to the second connecting part.

[0020] More preferably, the second clamping mechanism includes a second mounting support, a second transmission arm, a second clamping drive member, and a clamping push plate. The second mounting support is fixedly mounted on the base. The second transmission arm includes a first connecting part, a second connecting part, and a shaft connection part. The shaft connection part is located between the first connecting part and the second connecting part and is triangularly distributed. The shaft connection part is rotatably mounted on the second mounting support via a rotating shaft. The clamping push plate is mounted on the first connecting part. The telescopic end of the second clamping drive member is hinged to the second connecting part.

[0021] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0022] 1. This utility model's four-station bag-feeding packaging machine achieves miniaturization and cost reduction, adapting to the needs of micro and small enterprises. Through a dual approach of station integration and structural simplification, this utility model not only significantly promotes the miniaturization and cost reduction of bag-feeding packaging machines but also achieves a precise balance between "small size, light weight" and "low cost." Compared to traditional 8-station, 10-station, or 12-station equipment, integrating "bag opening-feeding" and "sealing-discharging" into the same station reduces the total number of stations to four. The rotating disc adopts a four-section design and only has four sets of clamping components, greatly simplifying the equipment's circumferential layout and transmission structure. Ultimately, the equipment's footprint can be controlled to within 1.5m². 2 Within this range, compared to traditional multi-station equipment (which typically occupies 3-5 square meters) 2 This design saves over 60% of space, flexibly adapting to the narrow production workshops of micro and small enterprises. Simultaneously, the number of components (especially clamping components and workstation actuators) is reduced by over 50%, eliminating redundant support structures. Combined with lightweight design, the overall weight is kept below 300kg, reducing the difficulty and cost of equipment transportation and installation, and also reducing the load-bearing requirements of the production site floor. In terms of cost, the manufacturing cost of the frame, the procurement cost of core components, and the overall assembly cost are reduced by 30%-40%, perfectly solving the pain points of "high cost and overcapacity" in purchasing traditional multi-workstation equipment for micro and small enterprises. It also avoids the "insufficient efficiency" defects of semi-automatic equipment, forming a "small size, light weight, low cost, and high efficiency" advantage.

[0023] 2. This utility model eliminates the bag-holding mechanism and its related components, further reducing costs, increasing efficiency, and simplifying operation. Traditional bag-packaging machines rely on a complete set of components such as a bag-holding shaft and bag-holding assembly. After opening the bag, the machine inserts the bag into the opening and keeps it open until the material is discharged. This structure not only increases the manufacturing cost and assembly complexity of the equipment, but also requires the additional design of linkage mechanisms such as synchronous rotation and retraction reset of the bag-holding assembly. It is prone to problems such as bag jamming and unstable bag-holding due to multi-component coordination errors. This utility model optimizes the connection of the "bag opening-discharging" process at the second station. It uses the first and second suction cups of the bag opening mechanism to continuously keep the bag opening open until the lifting hopper inserts into the bag opening to complete the material discharge. Stable material discharge can be achieved without the bag-holding assembly, directly eliminating the bag-holding shaft, bag-holding drive component, synchronous transmission structure, and other complete set of bag-holding related components. This not only further reduces the hardware cost of the equipment and the number of vulnerable parts, but also reduces the later maintenance cost. On the other hand, it simplifies the equipment transmission logic and control program, reduces the risk of multi-component coordination failures, improves operational stability and reliability, and shortens the debugging cycle and reduces the difficulty of operation. More importantly, eliminating the bag-supporting mechanism further simplifies the equipment structure, providing crucial support for keeping the overall weight under 300kg and the floor space under 1.5㎡, without affecting packaging efficiency and ensuring stable operation of the equipment while miniaturizing it.

[0024] 3. This utility model's four-station bag-feeding packaging machine has a third station with reserved space for flexible configuration, expanding the equipment's multi-functional adaptability to various scenarios. Of the four stations on the four-section rotary table, this utility model only specifies the functions of the first station (bag loading), the second station (bag opening and unloading), and the fourth station (sealing and unloading), reserving the third station as an "expandable station." This breaks the limitations of traditional bag-feeding packaging machines with "fixed station functions and limited adaptability to various scenarios," providing the equipment with diversified functional combinations. Specifically, it can achieve multiple configuration forms:

[0025] — Dual material filling configuration; A second lifting hopper is set above the clamping component corresponding to the third station. The same lifting drive component is used to drive it synchronously with the lifting hopper of the second station to realize the sequential filling of "first material (second station) - second material (third station)". It is suitable for packaging scenarios such as mixed nuts and dried fruits, powder and granules, etc., without the need to purchase additional multi-material equipment.

[0026] — Coding / inspection configuration; a coding machine (laser coding, inkjet coding, etc.) is set up at the third workstation to code the production date and batch number on the packaging bags after they are cut, or a visual inspection component (opening detection, filling amount detection, etc.) is set up to achieve the integration of "packaging-inspection-coding-sealing" and improve the product compliance and quality control level.

[0027] —Auxiliary function configuration; bag opening shaping mechanism (ensuring a flat seal), venting mechanism (reducing packaging volume), etc., can also be set according to needs, making one machine adaptable to the packaging needs of multiple industries such as food, daily chemicals, and pharmaceuticals. It is worth noting that the expansion configuration of the third workstation does not require increasing the equipment's footprint (still within 1.5㎡) nor significantly increasing the overall weight (controllable within 300kg), yet it allows micro and small enterprises to handle multiple product packaging with a single machine, greatly improving the equipment's cost-effectiveness and market adaptability, meeting the needs of "lightweight production and multi-functional reuse".

[0028] 4. This utility model's four-station bag-feeding packaging machine balances miniaturization and high efficiency, achieving "high output from small equipment." While achieving the miniaturization goal of "within 1.5㎡ of floor space and 300kg of machine weight," this utility model optimizes station flow efficiency and actuator coordination logic to ensure that the equipment's packaging efficiency still reaches 30-40 bags / minute. Although slightly lower than traditional 8-station large equipment (typically ≤60 bags / minute), it fully covers the daily production capacity needs of micro and small enterprises. Furthermore, compared to the problem of "large capacity but overcapacity" with large equipment, it achieves "capacity matching and no waste." Its efficiency is guaranteed by: station integration shortening the bag flow path and reducing redundant rotation time between multiple stations in traditional equipment; eliminating the bag-supporting mechanism makes the bag opening and unloading processes more compact, avoiding the waiting period for component removal and reset; and the four sets of clamping components synchronously cycle with the rotating disc, ensuring continuous operation of each station's actuator with no significant idle time. This advantage allows micro and small enterprises to meet their production needs without paying high costs for "excess capacity" by using miniaturized equipment, thus realizing the core value of "exchanging economic cost-effectiveness for adapted capacity".

[0029] 5. This utility model's four-station bag-feeding packaging machine optimizes the electrical box structure design, improving space utilization and ease of operation. This utility model specifically optimizes the layout and structure of the electrical box, placing it on the outside of the frame corresponding to the first station. It adopts a concave structure design, fitting the bag compartment and bag-picking mechanism into the recess formed by the electrical box, with the bag-picking mechanism located below the bag compartment. A touch screen display is also installed on the top of the electrical box on one side of the bag compartment. From a space utilization perspective, the concave electrical box integrates the electrical control components, bag compartment, and bag-picking mechanism in the same area through an embedded installation method, avoiding the need for separate components and thus saving space. This further supports the miniaturization goal of "equipment footprint ≤ 1.5㎡," saving 20%-30% of external layout space compared to the traditional model where the electrical box and bag-feeding components are independently set up. In terms of ease of operation, the touch screen is adjacent to the bag bin and bag retrieval mechanism, allowing operators to complete equipment parameter settings (such as packaging speed and feeding amount), bag replenishment, and bag retrieval status observation in the same operating area without having to travel between different areas of the equipment, reducing operational movement and improving work efficiency. At the same time, the concave structure provides a certain degree of protection for the bag bin and bag retrieval mechanism, reducing the impact of external interference on the stability of bag supply. The design of the bag retrieval mechanism located below the bag bin conforms to the bag supply logic of pre-packaged bags falling naturally, reducing the risk of bag jamming and further ensuring the stability of continuous equipment operation. Attached Figure Description

[0030] Figure 1 This utility model relates to a three-dimensional four-station bag-feeding packaging machine. Figure 1 ;

[0031] Figure 2 This utility model relates to a three-dimensional four-station bag-feeding packaging machine. Figure 2 ;

[0032] Figure 3 This is a front view of the four-station bag-feeding packaging machine of this utility model;

[0033] Figure 4 This is a side view of the four-station bag-feeding packaging machine of this utility model;

[0034] Figure 5 This is a rear view of the four-station bag-feeding packaging machine of this utility model;

[0035] Figure 6 This is a top view of the four-station bag-feeding packaging machine of this utility model;

[0036] Figure 7 This utility model relates to a four-station bag-feeding packaging machine with a three-dimensional bag opening and unloading assembly system. Figure 1 ;

[0037] Figure 8 This utility model relates to a four-station bag-feeding packaging machine with a three-dimensional bag opening and unloading assembly system. Figure 2 ;

[0038] Figure 9 This is a schematic diagram of the assembly structure of the bag opening mechanism in the four-station bag feeding and packaging machine of this utility model;

[0039] Figure 10 This is a perspective view of the opening clamp-holding assembly of the four-station bag feeding and packaging machine of this utility model;

[0040] Figure 11 This is a side view of the assembly of the opening clamp-holding component in the four-station bag feeding and packaging machine of this utility model;

[0041] Figure 12 This is a schematic diagram of the first clamping mechanism in the four-station bag-feeding packaging machine of this utility model;

[0042] Figure 13 This is a schematic diagram of the second clamping mechanism in the four-station bag-feeding packaging machine of this utility model;

[0043] Figure 14 This is a three-dimensional view of the bag compartment, bag retrieval, and bag loading assembly of the four-station bag feeding and packaging machine of this utility model;

[0044] Figure 15 This is a side view of the bag compartment, bag taking, and bag loading assembly of the four-station bag feeding and packaging machine of this utility model;

[0045] Reference numerals: 1. Frame, 2. Base, 3. Rotating sleeve, 4. Rotating disk, 5. Bag bin, 6. Bag picking mechanism, 7. Bag loading mechanism, 8. Bag opening mechanism, 9. Lifting hopper, 10. First clamping mechanism, 11. Second clamping mechanism, 12. Sealing mechanism, 13. Clamping assembly, 14. First station, 15. Second station, 16. Third station, 17. Fourth station, 18. Discharge chute, 19. First connecting arm, 20. Lifting drive assembly, 21. Lifting mounting base, 22. Lifting drive component, 23. Mounting connecting frame, 24. Guide shaft, 25. Guide shaft sleeve, 26. Electrical box, 27. Groove, 28. Touch screen display, 2 9. Bag opening mounting base; 30. Bag opening servo motor assembly; 31. First bag opening arm; 32. Second bag opening arm; 33. First suction cup; 34. Second suction cup; 35. First swing arm; 36. Second swing arm; 37. Transmission link; 38. First mounting support; 39. First transmission arm; 40. Clamping link; 41. Clamping swing arm; 42. Clamping servo motor assembly; 43. Clamping push plate; 44. First connecting part; 45. Second connecting part; 46. Shaft connection part; 47. Second mounting support; 48. Second transmission arm; 49. Second clamping drive component; 50. Clamping arm; 51. Bag clamping claw; 52. Clamping assembly adjusting swing arm; 53. Moving disk. Detailed Implementation

[0046] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. 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.

[0047] As a preferred embodiment of this utility model, this embodiment provides a four-station bag-feeding packaging machine, as shown in the attached instruction manual. Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and attached Figure 6As shown, the four-station bag-feeding packaging machine includes a frame 1, a base 2, a rotating sleeve 3, a rotating disk 4, a bag bin 5, a bag-picking mechanism 6, a bag-loading mechanism 7, a bag-opening mechanism 8, a lifting hopper 9, a first clamping mechanism 10, a second clamping mechanism 11, and a sealing mechanism 12. The base 2 is mounted on the frame 1, the rotating sleeve 3 is rotatably mounted on the base 2, and the rotating disk 4 is fixed to the upper end of the rotating sleeve 3. A turntable drive assembly for driving the rotating disk is installed inside the base 2. The frame 1, base 2, rotating sleeve 3, rotating disk 4, bag bin 5, bag-picking mechanism 6, bag-loading mechanism 7, bag-opening mechanism 8, lifting hopper 9, first clamping mechanism 10, second clamping mechanism 11, and sealing mechanism 12 can all adopt mature structures from existing 8-station or 10-station bag-feeding packaging machines. The layout and dimensions of each mechanism can be adapted and adjusted. This embodiment does not limit the specific structure.

[0048] The four-station bag-feeding packaging machine provided in this embodiment aims to achieve miniaturization and low cost by optimizing the station layout and structural integration, while ensuring packaging efficiency and functional adaptability to meet the production needs of micro and small enterprises. The specific implementation plan is as follows:

[0049] On the rotating disk 4, four sets of clamping components 13 for clamping pre-made packaging bags are arranged radially along the circumference with the center of the rotating disk 4 as the center. The rotating disk 4 is set with four work stations according to the four-quarter division. Each set of clamping components 13 corresponds to one work station, and the work station is switched cyclically as the rotating disk 4 rotates.

[0050] The bag compartment 5, the bag taking mechanism 6 and the bag loading mechanism 7 are assembled on the frame 1 outside the first station 14, and the first clamping mechanism 10 is assembled on the base 2 inside the first station 14. The first clamping mechanism 10 acts on the clamping assembly 13 that rotates to the first station 14 to open its bag clamping claws.

[0051] The lifting hopper 9 and the bag opening mechanism 8 are mounted on the frame 1 outside the second station 15. The bag opening mechanism 8 is configured to open the bag opening of the pre-made packaging bag held on the clamping assembly 13 that has been rotated to the second station 15 by the relative moving away action of the first suction cup 33 and the second suction cup 34. The lifting hopper 9 moves down so that its lower end is inserted into the pre-made packaging bag with the bag opening opened.

[0052] The sealing mechanism 12 is mounted on the frame 1 outside the fourth station 17 and is used to heat seal the opening of the pre-made packaging bag held by the clamping assembly 13 that has rotated to the fourth station 17. A discharge chute 18 is provided below the sealing mechanism 12. The second clamping mechanism 11 is mounted on the base 2 inside the fourth station 17. The second clamping mechanism 11 acts on the clamping assembly 13 that has rotated to the fourth station 17 to open its bag clamping claws. The pre-made packaging bag that has been sealed falls onto the discharge chute 18 and is discharged through the discharge chute 18.

[0053] The operation flow of the four-station bag packaging machine provided in this embodiment is roughly as follows: Pre-made packaging bags are placed in the bag hopper 5. The bag-picking mechanism 6 picks up the pre-made packaging bags one by one from the bag hopper 5. The bag-loading mechanism 7 moves to the position where it docks with the bag-picking mechanism 6, clamping the pre-made packaging bags taken out by the bag-picking mechanism 6. The rotating disk 4 drives the clamping assembly 13 to the first station 14. At this time, the first opening clamping mechanism 10 abuts against the opening clamping post on the clamping assembly 13, causing the bag-clamping claws at the end of the clamping assembly 13 to open, ready to clamp the packaging bag. The bag-loading mechanism 7 moves from the docking position of the bag-picking mechanism 6 to the first station 14, so that the pre-made packaging bag it clamps is located between the left and right sets of bag-clamping claws 51 of the clamping assembly 13 (or four bag-clamping claws, each set of the left and right sets of bag-clamping claws contains two bag-clamping claws; if it is an M-type bag, generally four bag-clamping claws are used). Then the first opening clamping mechanism 10 resets, and the left and right sets of bag-clamping claws of the clamping assembly 13 clamp the pre-made packaging bag. The bag-loading machine... The mechanism 7 is transferred to the bag-picking mechanism 6 to enter the next cycle; the rotating disk 4 rotates one division, which drives the clamping component 13 holding the pre-made packaging bag to rotate to the second station 15. At this time, the bag opening mechanism 8 is activated, using the first suction cup 33 and the second suction cup 34 to suck up both sides of the bag opening of the pre-made packaging bag. Then the first suction cup 33 and the second suction cup 34 separate to open the bag opening of the pre-made packaging bag. (At the same time as the bag opening mechanism 8 is activated, the movable disk on the rotating sleeve 3, which can move relative to the rotating sleeve 3, cooperates with the clamping component adjusting swing arm 52 on the clamping component 13 to adjust the distance between the left and right clamping arms 50 in the clamping component 13. When the bag opening is opened, the distance between the two clamping arms 50 is reduced. This structure is a conventional and mature structure on the bag packaging machine, and this application will not elaborate on it.) After the bag opening is opened, the lifting hopper 9 is activated, inserting the lower end of the lifting hopper 9 into the opening of the pre-made packaging bag to prevent the material from slipping out during feeding. After the material is unloaded into the bag, the lifting hopper 9 returns to its original position, the first suction cup 33 and the second suction cup 34 stop adsorbing the bag opening, and the rotating disk 4 continues to rotate, transferring the packaged bag containing the material to the third station 16. The third station 16 is an expandable station that can be expanded according to the actual packaging needs. The specific expansion of the third station 16 will be described later. The rotating disk 4 continues to rotate to the fourth station 17 (during the rotation process (which can be from the second station to the third station or from the third station to the fourth station, and can be flexibly adjusted according to packaging requirements), through the movement of the moving disk and the coordination of the adjusting arm of the clamping component 13, the distance between the two clamping arms of the clamping component 13 is increased, thereby flattening the bag opening of the packaging bag). The sealing mechanism 12 applies pressure to seal the bag opening of the pre-made packaging bag that has rotated to the fourth station 17. After the sealing is completed, the second clamping mechanism 11 is activated to open the bag clamping claw of the clamping component 13. The sealed pre-made packaging bag is released from the clamping component 13 and falls into the discharge chute 18 below and slides out.

[0054] The working principle and operation principle of the four-station bag-feeding packaging machine in this embodiment are similar to those of existing 8-station and 10-station bag-feeding packaging machines. No improvements have been made to the operating principle and process, nor have the specific structures of related components (such as bag hopper 5, bag picking mechanism 6, bag loading mechanism 7, bag opening mechanism 8, lifting hopper 9, first clamping mechanism 10, second clamping mechanism 11, and sealing mechanism 12) been modified. Only the number of stations and the layout of components have been improved to achieve equipment miniaturization and cost reduction. Compared to traditional 8-station, 10-station, or 12-station equipment, integrating "bag opening-feeding" and "sealing-discharging" into the same station reduces the total number to four. The rotating disk 4 adopts a four-section design and only has four sets of clamping components 13, significantly simplifying the circumferential layout and transmission structure of the equipment.

[0055] As an example of this embodiment, please refer to the appendix to the specification. Figure 7 and attached Figure 8 As shown, an assembly structure integrating a bag-opening mechanism 8 and a lifting hopper 9 into one station is illustrated. As an example, the lifting hopper 9 is connected to the lifting drive assembly 20 via a first connecting arm 19, and the lifting drive assembly 20 drives the lifting hopper 9 to rise and fall.

[0056] As another example, the lifting hopper 9 can be directly mounted on a linear actuator (such as a linear electric cylinder or pneumatic cylinder) to control its lifting and lowering. There are many mechanical structures that can realize the lifting and lowering action of the lifting hopper 9, which will not be listed here.

[0057] As a preferred embodiment, the lifting drive assembly 20 includes a lifting mounting base 21, a lifting drive component 22, a mounting connecting frame 23, and a guide shaft 24. The lifting mounting base 21 is fixedly mounted on the frame 1, the lifting drive component 22 is mounted on the lifting mounting base 21, the telescopic end of the lifting drive component 22 is connected to the mounting connecting frame 23, the upper end of the guide shaft 24 is fixedly connected to the mounting connecting frame 23, and the lower end of the guide shaft 24 is slidably engaged with the guide sleeve 25 fixedly mounted on the lifting mounting base 21. The first connecting arm 19 is mounted on the mounting connecting frame 23. This design ensures the stability of the lifting hopper 9 during the lifting process, thereby guaranteeing its stable operation. The lifting drive component 22 can be a linear electric cylinder, linear motor, pneumatic cylinder, or a structure consisting of a servo motor + reducer + swing arm + connecting rod.

[0058] As another preferred embodiment of the present invention, this embodiment is an extended embodiment of the third workstation 16 (expandable workstation).

[0059] As one embodiment of this invention, two lifting hoppers 9 are provided. The second lifting hopper (not shown in the figure) is located at the third station 16. It can use the same lifting drive assembly 20 as the lifting hopper 9, or use a lifting drive assembly 20 with a different structure. It is connected to the lifting drive assembly 20 of the lifting hopper 9 through a second connecting arm. The second connecting arm is provided so that the second lifting hopper is located at the third station 16, so as to realize the filling of two different materials (such as two materials, or adding a deoxidizer pack here).

[0060] As another implementation of this embodiment, if the coding function is required, the existing laser coding machine of the bag packaging machine can be directly installed and fixed on the frame 1 outside the third station 16. The coding point corresponds to the bag body position of the pre-made bag in the third station 16. The coding parameters are synchronously controlled through the touch screen 28, without the need for additional control module configuration.

[0061] As another preferred embodiment of this utility model, this embodiment further optimizes the structural layout of the four-station bag-feeding packaging machine to further achieve the effect of miniaturization and small footprint.

[0062] As one embodiment of this invention, please refer to the appendix to the specification. Figure 3 Appendix Figure 14 and attached Figure 15 As shown, the four-station bag-feeding packaging machine of this embodiment also includes an electrical box 26, which is located on the outside of the frame 1 corresponding to the first station 14. The electrical box 26 is concave, and the bag compartment 5 and the bag-picking mechanism 6 are respectively arranged in the groove 27 formed by the electrical box 26; the bag-picking mechanism 6 is located below the bag compartment 5; a touch screen display 28 is provided on the top of the electrical box 26 on one side of the bag compartment 5.

[0063] The electrical control box 26 has been optimized in its structural design to improve space utilization and ease of operation. This invention specifically optimizes the layout and structure of the electrical control box 26, placing it on the outside of the frame 1 corresponding to the first workstation 14. It adopts a concave design, fitting the bag compartment 5 and the bag-collecting mechanism 6 into the recess 27 formed by the electrical control box 26, with the bag-collecting mechanism 6 positioned below the bag compartment 5. A touch screen display 28 is also installed on the top of the electrical control box 26 on one side of the bag compartment 5. From a space utilization perspective, the concave electrical control box 26 integrates the electrical control components, bag compartment 5, and bag-collecting mechanism 6 into the same area through an embedded installation method, avoiding the need for separate components to occupy additional space. This further supports the miniaturization goal of "equipment footprint ≤ 1.5㎡," saving 20%-30% of external layout space compared to the traditional model where the electrical control box 26 and bag-feeding components are independently set up. In terms of ease of operation, the touch screen 28 is adjacent to the bag bin 5 and the bag picking mechanism 6. Operators can complete equipment parameter settings (such as packaging speed and feeding amount), bag replenishment in the bag bin 5, and bag picking status observation in the same operating area without having to travel between different areas of the equipment, reducing operating lines and improving work efficiency. At the same time, the "concave" structure provides a certain degree of protection for the bag bin 5 and the bag picking mechanism 6, reducing the impact of external interference on the stability of bag supply. The design of the bag picking mechanism 6 located below the bag bin 5 conforms to the bag supply logic of pre-made packaging bags falling naturally, reducing the risk of bag jamming and further ensuring the stability of continuous equipment operation.

[0064] Refer to the instruction manual appendix Figure 14 and attached Figure 15 As shown, the bag compartment 5 is located above the bag-picking mechanism 6. The bag-picking suction cup of the bag-picking mechanism 6 moves up and down. When it moves upward, it moves to the bottom of the bag compartment 5 and contacts the pre-made packaging bag at the bottom of the bag compartment 5. Then, the bag-picking suction cup provides negative pressure to adsorb the pre-made packaging bag. When the bag-picking mechanism 6 moves downward, it removes the pre-made packaging bag held by the bag-picking suction cup from the bottom of the bag compartment 5. Then, the bag-loading mechanism 7 clamps the pre-made packaging bag and transfers it to the clamping assembly 13 of the first station 14. The bag compartment 5, the bag-picking mechanism 6, and the bag-loading mechanism 7 are all conventional structures of a bag-packaging machine.

[0065] As another preferred embodiment of this utility model, although the bag opening mechanism 8 in this utility model can adopt an existing structure, this embodiment still proposes an optimized structure, as detailed in the appendix to the specification. Figure 7 Appendix Figure 8 and attached Figure 9As shown, the bag opening mechanism 8 includes a bag opening mounting base 29, a bag opening servo motor assembly 30, a first bag opening arm 31, a second bag opening arm 32, a first suction cup 33, and a second suction cup 34. The bag opening mounting base 29 is mounted on the frame 1. The bag opening servo motor assembly 30 is fixedly mounted on the bag opening mounting base 29. The upper end of the first bag opening arm 31 is mounted on the output shaft of the bag opening servo motor assembly 30. The upper end of the second bag opening arm 32 is rotatably mounted on the bag opening mounting base 29. The connection end of the first bag opening arm 31 is connected to the bag opening servo motor assembly 30. The upper part is provided with a first swing arm 35 extending towards the second bag opening arm 32. The second swing arm 36 extending towards the first bag opening arm 31 is provided on the connecting end of the second bag opening arm 32 which is rotatably connected to the bag opening mounting base 29. The first swing arm 35 and the second swing arm 36 are connected by a transmission link 37. One end of the transmission link 37 is hinged to the first swing arm 35, and the other end of the transmission link 37 is hinged to the second swing arm 36. The first suction cup 33 is fixedly mounted on the lower end of the first bag opening arm 31, and the second suction cup 34 is fixedly mounted on the lower end of the second bag opening arm 32.

[0066] As another preferred embodiment of this invention, although the first clamping mechanism 10 and the second clamping mechanism 11 can adopt existing structures, this embodiment still proposes an optimized structure for the first clamping mechanism 10 and the second clamping mechanism 11, as detailed in the appendix to the specification. Figure 10 Appendix Figure 11 and attached Figure 12 As shown, the first clamping mechanism 10 includes a first mounting support 38, a first transmission arm 39, a clamping connecting rod 40, a clamping swing arm 41, a clamping servo motor assembly 42, and a clamping push plate 43. The first mounting support 38 is fixedly mounted on the base 2. The first transmission arm 39 includes a first connecting part 44, a second connecting part 45, and a shaft connection part 46. The shaft connection part 46 is located between the first connecting part 44 and the second connecting part 45 and is triangularly distributed. The shaft connection part 46 is rotatably mounted on the first mounting support 38 via a rotating shaft. The clamping push plate 43 is mounted on the first connecting part 44. The clamping swing arm 41 is mounted on the output shaft of the clamping servo motor assembly 42. The lower end of the clamping connecting rod 40 is hinged to the clamping swing arm 41, and the upper end of the clamping connecting rod 40 is hinged to the second connecting part 45.

[0067] Refer to the instruction manual appendix Figure 13As shown, the second clamping mechanism 11 includes a second mounting support 47, a second transmission arm 48, a second clamping drive member 49, and a clamping push plate 43. The second mounting support 47 is fixedly mounted on the base 2. The second transmission arm 48 includes a first connecting part 44, a second connecting part 45, and a shaft connection part 46. The shaft connection part 46 is located between the first connecting part 44 and the second connecting part 45 and is triangularly distributed. The shaft connection part 46 is rotatably mounted on the second mounting support 47 via a rotating shaft. The clamping push plate 43 is mounted on the first connecting part 44. The telescopic end of the second clamping drive member 49 is hinged to the second connecting part 45.

Claims

1. A four-station bag-feeding packaging machine, comprising a frame (1), a base (2), a rotating sleeve (3), a rotating disk (4), a bag bin (5), a bag-taking mechanism (6), a bag-loading mechanism (7), a bag-opening mechanism (8), a lifting hopper (9), a first clamping mechanism (10), a second clamping mechanism (11), and a sealing mechanism (12); the base (2) is mounted on the frame (1), the rotating sleeve (3) is rotatably mounted on the base (2), the rotating disk (4) is fixed to the upper end of the rotating sleeve (3), and a turntable drive assembly for driving the rotating disk is provided inside the base (2); characterized in that: On the rotating disk (4), four sets of clamping components (13) for clamping pre-made packaging bags are arranged radially along the circumference with the center of the rotating disk (4) as the center; the rotating disk (4) is set with four work stations according to the four divisions, and each set of clamping components (13) corresponds to one work station, and the work station is switched cyclically as the rotating disk (4) rotates; The bag compartment (5), bag taking mechanism (6) and bag loading mechanism (7) are mounted on the frame (1) outside the first station (14), and the first clamping mechanism (10) is mounted on the base (2) inside the first station (14). The first clamping mechanism (10) acts on the clamping assembly (13) that rotates to the first station (14) to open its bag clamping claws. The lifting hopper (9) and the bag opening mechanism (8) are mounted on the frame (1) outside the second station (15). The bag opening mechanism (8) is configured to open the bag opening of the pre-made packaging bag held on the clamping assembly (13) rotated to the second station (15) by the relative moving away action of the first suction cup (33) and the second suction cup (34). The lifting hopper (9) moves down so that its lower end is inserted into the pre-made packaging bag with the bag opening opened. The sealing mechanism (12) is mounted on the frame (1) outside the fourth station (17) and is used to heat seal the bag mouth of the pre-made packaging bag held by the clamping component (13) that has rotated to the fourth station (17). A discharge chute (18) is provided below the sealing mechanism (12). The second clamping mechanism (11) is mounted on the base (2) inside the fourth station (17). The second clamping mechanism (11) acts on the clamping component (13) that has rotated to the fourth station (17) to open its bag clamping claws. The pre-made packaging bag that has been sealed falls onto the discharge chute (18) and is discharged through the discharge chute (18).

2. The four-station bag-feeding packaging machine as described in claim 1, characterized in that: The lifting hopper (9) is connected to the lifting drive assembly (20) via the first connecting arm (19), and the lifting drive assembly (20) drives the lifting hopper (9) to rise and fall.

3. The four-station bag-feeding packaging machine as described in claim 2, characterized in that: The lifting drive assembly (20) includes a lifting mounting base (21), a lifting drive component (22), a mounting bracket (23), and a guide shaft (24). The lifting mounting base (21) is fixedly mounted on the frame (1), the lifting drive component (22) is mounted on the lifting mounting base (21), the telescopic end of the lifting drive component (22) is connected to the mounting bracket (23), the upper end of the guide shaft (24) is fixedly connected to the mounting bracket (23), the lower end of the guide shaft (24) is slidably engaged with the guide bushing (25) fixedly mounted on the lifting mounting base (21), and the first connecting arm (19) is mounted on the mounting bracket (23).

4. The four-station bag-feeding packaging machine as described in any one of claims 1-3, characterized in that: The four-station bag packaging machine also includes a second lifting hopper, which is positioned above the pre-made packaging bag held by the clamping assembly (13) that rotates to the third station (16).

5. The four-station bag-feeding packaging machine as described in claim 4, characterized in that: The lifting hopper (9) and the second lifting hopper are both driven by the same lifting drive assembly (20); the lifting hopper (9) is connected to the lifting drive assembly (20) through the first connecting arm (19), and the second lifting hopper is connected to the lifting drive assembly (20) through the second connecting arm.

6. The four-station bag-feeding packaging machine as described in any one of claims 1-3, characterized in that: The four-station bag packaging machine also includes an electrical box (26), which is located outside the frame (1) corresponding to the first station (14).

7. The four-station bag-feeding packaging machine as described in claim 6, characterized in that: The electrical box (26) is concave, and the bag compartment (5) and the bag taking mechanism (6) are respectively arranged in the groove (27) formed by the electrical box (26); the bag taking mechanism (6) is located below the bag compartment (5); a touch screen (28) is provided on the top of the electrical box (26) on one side of the bag compartment (5).

8. The four-station bag-feeding packaging machine as described in any one of claims 1-3, characterized in that: The bag opening mechanism (8) includes a bag opening mounting base (29), a bag opening servo motor assembly (30), a first bag opening arm (31), a second bag opening arm (32), a first suction cup (33), and a second suction cup (34). The bag opening mounting base (29) is mounted on the frame (1). The bag opening servo motor assembly (30) is fixedly mounted on the bag opening mounting base (29). The upper end of the first bag opening arm (31) is mounted on the output shaft of the bag opening servo motor assembly (30). The upper end of the second bag opening arm (32) is rotatably mounted on the bag opening mounting base (29). The connection end of the first bag opening arm (31) connected to the bag opening servo motor assembly (30) is provided with... A first swing arm (35) extending in the direction of the second bag opening arm (32) is provided. A second swing arm (36) extending in the direction of the first bag opening arm (31) is provided on the connecting end of the second bag opening arm (32) and the bag opening mounting base (29). The first swing arm (35) and the second swing arm (36) are connected by a transmission link (37). One end of the transmission link (37) is hinged to the first swing arm (35), and the other end of the transmission link (37) is hinged to the second swing arm (36). A first suction cup (33) is fixedly mounted on the lower end of the first bag opening arm (31), and a second suction cup (34) is fixedly mounted on the lower end of the second bag opening arm (32).

9. The four-station bag-feeding packaging machine as described in any one of claims 1-3, characterized in that: The first clamping mechanism (10) includes a first mounting support (38), a first transmission arm (39), a clamping link (40), a clamping swing arm (41), a clamping servo motor assembly (42), and a clamping push plate (43). The first mounting support (38) is fixedly mounted on the base (2). The first transmission arm (39) includes a first connecting part (44), a second connecting part (45), and a shaft connection part (46). The shaft connection part (46) is located between the first connecting part (44) and the second connecting part (45) and is triangularly distributed. The shaft connection part (46) is rotatably mounted on the first mounting support (38) via a rotating shaft. The clamping push plate (43) is mounted on the first connecting part (44). The clamping swing arm (41) is mounted on the output shaft of the clamping servo motor assembly (42). The lower end of the clamping link (40) is hinged to the clamping swing arm (41), and the upper end of the clamping link (40) is hinged to the second connecting part (45).

10. The four-station bag-feeding packaging machine as described in any one of claims 1-3, characterized in that: The second clamping mechanism (11) includes a second mounting support (47), a second transmission arm (48), a second clamping drive (49), and a clamping push plate (43). The second mounting support (47) is fixedly mounted on the base (2). The second transmission arm (48) includes a first connecting part (44), a second connecting part (45), and a shaft connection part (46). The shaft connection part (46) is located between the first connecting part (44) and the second connecting part (45) and is triangularly distributed. The shaft connection part (46) is rotatably mounted on the second mounting support (47) via a rotating shaft. The clamping push plate (43) is mounted on the first connecting part (44). The telescopic end of the second clamping drive (49) is hinged to the second connecting part (45).

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