Full-automatic bottom-filling degassing packaging machine

Abstract

The application discloses a full-automatic bottom-filling degassing packaging machine, which comprises a double-layer rack structure, a bag bin assembly arranged at the back of the rack structure, an upper conveying assembly arranged in the lower-layer rack structure in front of the bag bin assembly, a filling assembly arranged on the upper-layer rack structure directly above a filling station, an upper bagging mechanism arranged between the bag bin assembly and the upper conveying assembly, a lower conveying assembly arranged below the filling station, a sealing station and a bag clamping and belt group, and bag clamping mechanisms arranged on the front and back sides of the filling station and the sealing station respectively. The upper conveying assembly realizes bottom lifting through the high-integration opening bag structure and the bag clamping structure, the filling mechanism realizes vacuum degassing, the stability of the material filling process is ensured, the material deviation and the powder dust are reduced, and the full-automatic bottom-filling degassing packaging machine can adapt to more types of packaging bag filling operations such as PE bags.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment technology, and in particular to a fully automatic bottom-fill degassing packaging machine. Background Technology

[0002] In the field of chemical raw material packaging, especially for ultrafine powders, traditional packaging methods often face many challenges. Due to their small particle size, large specific surface area, poor flowability, and high gas content, ultrafine powders are prone to dust spillage and low packaging efficiency during the packaging process. These problems not only increase dust pollution in the production environment and pose a threat to the health of operators, but may also affect the packaging quality and storage stability of the product.

[0003] For packaging granular and powdery materials, the conveying mechanism below the traditional filling mechanism does not have front and rear limit structures when conveying the packaging bags. The bag wiping action during the filling process causes inconsistent bag opening degree, affecting filling accuracy. Powder dust is easily generated during material filling. When filling products with large packaging volume, the bag is prone to tipping over, resulting in poor sealing process. Summary of the Invention

[0004] To address the aforementioned technical problems, a fully automatic bottom-filling degassing packaging machine is provided. Through a highly integrated bag opening and bag holding structure, the lower conveying component provides bottom support, and the filling mechanism achieves vacuum degassing, ensuring the stability of the material filling process, reducing material deviation and powder dust, and adapting to filling operations of more types of packaging bags such as PE bags.

[0005] To achieve the above objectives, the present invention discloses a fully automatic bottom-filling degassing packaging machine, including a double-layer frame structure, a bag hopper assembly disposed behind the frame structure, an upper conveying assembly disposed in the lower frame structure in front of the bag hopper assembly, and a lower conveying assembly located below the upper conveying assembly. The upper conveying assembly is provided with two sets of bag holding mechanisms along the conveying direction, which serve as a filling station and a sealing station respectively. A bag feeding belt assembly is disposed on the side of the sealing station away from the filling station. A filling assembly is disposed on the upper frame structure directly above the filling station. A bag feeding mechanism is disposed between the bag hopper assembly and the upper conveying assembly.

[0006] The upper conveying assembly is equipped with bag-holding mechanisms on both the front and rear sides of the filling and sealing stations. The upper conveying assembly includes vertical plates fixed to the frame structure on both sides. A guide rod is installed between the two vertical plates along the conveying direction. At least two sets of sliding blocks are provided on the guide rods. A clamping plate adjustment mechanism is installed on the sliding blocks. Two sets of synchronous connecting rods are symmetrically arranged between the two sets of sliding blocks and located inside the guide rods. A first partition and a second partition are installed on the guide rod between the sliding blocks, spanning above the synchronous connecting rods. A lead screw is installed between the first partition and the adjacent vertical plate. The center of the sliding block near the first partition is threaded to the lead screw. A bag-clamping mechanism is provided on the synchronous connecting rod between the first partition and the adjacent vertical plate.

[0007] Furthermore, the bag compartment assembly includes a horizontally arranged bag compartment and a bag-retrieving mechanism located on top of the bag compartment. An upper bag platform is installed on the side of the bag compartment, perpendicular to the lateral movement direction of the bag-retrieving mechanism. A bag-pushing mechanism is installed at the bottom of the bag compartment. Several transverse bag-pushing grooves are provided inside the bag compartment for the bag-pushing rod in the bag-pushing mechanism to pass through. The bottom of the bag-pushing rod is lifted by a lifting cylinder, and the bag-pushing action is completed by a transversely arranged screw moving assembly. The bag-retrieving mechanism above the bag compartment includes a bag-clamping moving assembly arranged in the same direction as the bag-pushing rod. A bag-retrieving cylinder located at the top of the bag compartment is installed at the end of the bag-clamping moving assembly. A lifting rod is connected below the bag-retrieving cylinder. A suction cup assembly arranged along the length direction of the packaging bag is installed at the end of the lifting rod. The bag-retrieving mechanism transfers the packaging bag in the bag compartment to the upper bag platform on the side.

[0008] Furthermore, adjustable baffles are provided on both sides of the conveyor belt at the center of the bag-loading platform. The baffles are installed in a staggered manner with the bag-clamping moving component. An L-shaped baffle is provided on the side of the bag-loading platform near the bag-loading mechanism. The bottom of the baffle is connected to a bushing installed on a rotating shaft. A push plate cylinder is connected to the middle section of the rotating shaft. The fixed end of the push plate cylinder is connected to the bag-loading platform.

[0009] Furthermore, the bag-holding mechanism includes a crank arm connecting rod assembly fixed below the synchronous connecting rod, a bag opening clamp plate connected to the inner side of the crank arm connecting rod assembly, and a height-adjustable bag-holding plate installed above the crank arm connecting rod assembly. The synchronous connecting rod includes an active rod connected to the clamp plate adjustment mechanism and a driven rod located outside the active rod.

[0010] Furthermore, the hollow interior of the sliding block is used to install a clamping plate adjustment mechanism. The clamping plate adjustment mechanism includes a clamping plate adjustment cylinder. The push rod at the output end of the clamping plate adjustment cylinder is connected to the first connecting arm. The other end of the first connecting arm is fixed to the corresponding active rod. The fixed end of the clamping plate adjustment cylinder is connected to the second connecting arm. The center of the second connecting arm is fixed to the corresponding active rod. The center of the first connecting arm is connected to the side of the second connecting arm away from the fixed end of the clamping plate adjustment cylinder through a long connecting rod. Limit switches are installed on the sliding blocks on both sides of the clamping plate adjustment cylinder. The synchronous rotation of the active rods on both sides is achieved by the extension and retraction of the clamping plate adjustment cylinder, which drives the bag-holding mechanism below to complete the opening and closing action.

[0011] Furthermore, the filling assembly is connected to the hopper assembly mounted on the upper side frame structure. The filling assembly includes a filling head, which is connected to a bag mouth clamping assembly below via a chain drive mechanism. A hopper is provided on the upper frame structure, and the filling head is connected to the hopper via a long material pipe. An exhaust pipe for connecting a dust removal device is provided around the long material pipe. The bag mouth clamping assembly includes a multi-layer plate body connected to the chain drive mechanism. A through hole is opened in the center of the multi-layer plate body for the filling head to pass through. At least four sets of weighing sensors are installed in the multi-layer plate body. Two sets of horizontally arranged slide rails are installed on the bottom surface of the multi-layer plate body. Adjusting blocks located on the left and right sides of the filling head are fixed on the sliders on the slide rail surface. A pneumatically driven bag-smearing claw is installed below the adjusting block. A pulley assembly is provided between the two sets of slide rails. Locking blocks are provided on opposite sides of the two sets of adjusting blocks, which are connected to the conveyor belt of the pulley assembly to achieve opposite or reverse movement. The bag-smearing claw fixes the bag mouth of the packaging bag to complete the bag-smearing action.

[0012] Furthermore, a sleeve fitted onto the outside of the filling head is installed in the through hole of the multi-layer plate. Pen-shaped cylinders are installed on the front and rear sides of the sleeve, respectively. The output end of the pen-shaped cylinder is connected to the rotating shaft through a lever structure. A U-shaped bag support plate located below the sleeve is connected to the inner side of the rotating shaft.

[0013] Furthermore, the sealing station is equipped with a sealing assembly fixed on the frame structure. Sealing clamps are symmetrically arranged below the sealing assembly. The top of the sealing clamps is connected to the cylinder slide rail assembly to achieve opposite or reverse movement. A sealing heating module is arranged inside the sealing clamps. A through hole is opened in the center of the sealing assembly for a vertically movable through flat tube to pass through. The top of the through flat tube is connected to an external nitrogen filling module or vacuum module. A suction cup connected to the cylinder is arranged below the through flat tube for opening the bag mouth.

[0014] Furthermore, the lower conveyor assembly (60) is located below the filling station (80), the sealing station (90), and the unloading bag clamping belt assembly (100), including an independent load-bearing plate located directly below the filling station (80) and a conveyor belt located directly below the sealing station (90) and the unloading bag clamping belt assembly.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention discloses a fully automatic bottom-filling degassing packaging machine, which achieves bottom lifting through a highly integrated bag opening structure and bag holding structure, and vacuum degassing through a bottom conveying component and a filling mechanism, thereby ensuring the stability of the material filling process, reducing material deviation and powder dust, and can adapt to the filling operations of more types of packaging bags such as PE bags. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the frameless structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the bag compartment assembly of the present invention.

[0020] Figure 4 This is a bottom schematic diagram of the bag compartment assembly of the present invention.

[0021] Figure 5 This is a schematic diagram of the bag-upper mechanism of the present invention.

[0022] Figure 6 This is a schematic diagram of the upper conveying component of the present invention.

[0023] Figure 7 This is a schematic diagram of the clamping plate adjustment mechanism of the present invention.

[0024] Figure 8 This is a schematic diagram of the filler assembly and filling station of the present invention.

[0025] Figure 9 This is a schematic diagram showing the upper and lower limit states of the bag opening clamping assembly of the present invention.

[0026] Figure 10 This is a schematic diagram of the bottom of the bag opening clamping assembly of the present invention.

[0027] Figure 11 This is a schematic diagram of the sealing station of the present invention.

[0028] Figure 12 This is a schematic diagram of the sealing station interior of the present invention.

[0029] In the picture:

[0030] 10 is a frame structure;

[0031] 20 is the bag compartment assembly; 21 is the bag compartment; 22 is the bag retrieval mechanism; 221 is the bag clamping and moving assembly; 222 is the suction cup assembly; 23 is the bag loading platform; 231 is the baffle; 232 is the push plate cylinder; 24 is the bag pushing mechanism.

[0032] 30 is the upper conveying assembly; 31 is the vertical plate; 32 is the guide rod; 33 is the sliding block; 331 is the clamping plate adjustment mechanism; 3311 is the clamping plate adjustment cylinder; 3312 is the first connecting arm; 3313 is the second connecting arm; 3314 is the long connecting rod; 3315 is the limit switch; 34 is the first partition; 35 is the second partition; 36 is the lead screw; 37 is the synchronous connecting rod; 371 is the driving rod; 372 is the driven rod; 38 is the bag clamping mechanism; 39 is the bag holding mechanism; 391 is the curved arm connecting rod assembly; 392 is the bag mouth clamp; 393 is the bag holding plate.

[0033] 40 is the bag-loading mechanism;

[0034] 50 is the filling assembly; 51 is the hopper; 52 is the long material pipe; 53 is the filling head; 54 is the suction pipe; 55 is the chain drive mechanism; 56 is the multi-layer plate; 57 is the bag mouth clamping assembly; 571 is the bag wiping claw; 572 is the bag support plate; 58 is the weighing sensor.

[0035] 60 is the lower conveyor component;

[0036] 70 represents the silo assembly;

[0037] 80 is the filling station;

[0038] 90 is the sealing station; 91 is the sealing heating module; 92 is the sealing clamp; 93 is the through flat tube; 94 is the suction cup; 95 is the cylinder slide rail assembly;

[0039] 100 is the material feeding clamp bag belt assembly. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0041] One embodiment of the present invention, such as Figures 1 to 12 As shown, the bag compartment assembly 20 is located behind the frame structure 10, including a horizontally arranged bag compartment 21 and a bag-picking mechanism 22 located on top of the bag compartment 21. A bag-loading platform 23 is installed on the side of the bag compartment 21, perpendicular to the lateral movement direction of the bag-picking mechanism 22, to arrange packaging bags of different sizes for the bag-loading mechanism to load. Figure 6As shown, the upper conveying assembly 30 is located within the lower frame structure 10 in front of the bag storage assembly 20. The upper conveying assembly 30 has two sets of bag-holding mechanisms 39 arranged sequentially along the conveying direction, serving as a filling station 80 and a sealing station 90 respectively. A feeding bag clamping belt assembly 100 is located on the side of the sealing station 90 away from the filling station 80. Through a synchronous moving mechanism, empty bags at the bag clamping mechanism are moved to the filling station, bags that have been filled at the filling station are moved to the sealing station, and bags that have been sealed at the sealing station are moved to the feeding bag clamping belt assembly to complete the feeding process. Figure 8 and Figure 9 As shown, the filling assembly 50 is located on the upper frame structure 10 directly above the filling station 80 and is connected to the hopper assembly 70 installed on the side upper frame structure 10. The filling assembly 50 includes a filling head 53, which is connected to the bag mouth clamping assembly 57 below via a chain drive mechanism 55. An exhaust pipe is provided around the filling head to remove dust during the filling of granular or powdery materials, reducing dust generation. The bag upper mechanism 40 is located between the bag hopper assembly 20 and the upper conveying assembly 30, used to clamp and rotate horizontally placed packaging bags to a vertical position, and then clamp and convey them to the filling station 80 by the bag clamping mechanism 38 on the side of the upper conveying assembly 30 near the bag upper mechanism 40. Figure 2 As shown, the lower conveyor assembly 60 is located below the filling station 80, the sealing station 90, and the unloading bag clamping belt assembly 100. It includes an independent load-bearing plate located directly below the filling station 80 and a conveyor belt located directly below the sealing station 90 and the unloading bag clamping belt assembly. The bottom of the independent load-bearing plate is connected to a lifting cylinder, which can rise together with the bag mouth clamping assembly 57 during the filling process to ensure that the bottom of the packaging bag has sufficient support during the filling process. At the same time, when the upper conveyor assembly moves laterally, it ensures that the independent load-bearing plate and the adjacent conveyor belt are kept at the same height, thus improving stability.

[0042] like Figure 6 and Figure 7As shown, the upper conveying assembly 30 is equipped with bag-holding mechanisms 39 on both the front and rear sides of the filling station 80 and the sealing station 90. The upper conveying assembly 30 includes vertical plates 31 fixed on both sides to the frame structure 10. A guide rod 32 is installed between the two vertical plates 31 along the conveying direction. At least two sets of sliding blocks 33 are provided on the guide rod 32. A clamping plate adjustment mechanism 331 is installed on the sliding block 33. Two sets of synchronous connecting rods 37 located inside the guide rod 32 are symmetrically arranged between the two sets of sliding blocks 33. A first partition 34 and a second partition 35 are mounted on the guide rod 32, spanning above the synchronous connecting rod 37. Both the first partition 34 and the second partition 35 are fixedly connected to the frame structure. A lead screw 36 is installed between the first partition 34 and the adjacent vertical plate 31. The center of the sliding block 33 near the first partition 34 is threadedly connected to the lead screw 36. A bag clamping mechanism 38 is provided on the synchronous connecting rod 37 between the first partition 34 and the adjacent vertical plate 31. A servo motor that drives the lead screw to rotate is installed inside the vertical plate. Figure 6 As shown, this is the initial state of the upper conveying assembly. When the upper conveying assembly needs to move laterally, the servo motor drives the lead screw to rotate, and the sliding blocks that are threadedly connected to the lead screw and arranged adjacent to it move towards the filling station. Since the two sliding blocks are connected by a synchronous link, the two sets of sliding blocks and the two sets of bag-holding mechanisms fixed on the synchronous link also move accordingly. Compared with the chain drive used in the prior art, the lead screw moving module of this application can improve the displacement accuracy and, in conjunction with the bag-holding mechanism, ensure the stability of the packaging bag during the movement.

[0043] like Figure 6 and Figure 7As shown, the bag-holding mechanism 39 includes a crank arm connecting rod assembly 391 fixed below the synchronous connecting rod 37. At least two sets of crank arm connecting rod assemblies 391 are provided to ensure a more stable bag-holding torque. A bag mouth clamping plate 392 is connected to the inner side of the crank arm connecting rod assembly 391, and a height-adjustable bag-holding plate 393 is installed above the crank arm connecting rod assembly 391 to accommodate different sizes of packaging bags. During movement, it simultaneously clamps the bag mouth and the bag body position, ensuring stability during transport and preventing bag tipping due to excessive material, which would affect subsequent sealing operations. The synchronous connecting rod 37 includes an active rod 371 connected to the clamping plate adjusting mechanism 331 and a driven rod 372 located outside the active rod 371. Both ends of the active rod and the driven rod are mounted in a sliding block via bearings to ensure smooth rotation. The sliding block 33 is hollow inside for installing the clamping plate adjusting mechanism. Structure 331, the clamping plate adjustment mechanism 331 includes a clamping plate adjustment cylinder 3311, the push rod at the output end of the clamping plate adjustment cylinder 3311 is connected to the first connecting arm 3312, the other end of the first connecting arm 3312 is fixed to the corresponding side's drive rod 371, the fixed end of the clamping plate adjustment cylinder 3311 is connected to the second connecting arm 3313, the center of the second connecting arm 3313 is fixed to the corresponding side's drive rod 371, the center of the first connecting arm 3312 is connected to the side of the second connecting arm 3313 away from the fixed end of the clamping plate adjustment cylinder 3311 through a long connecting rod 3314, limit switches 3315 are installed on the sliding blocks 33 on both sides of the clamping plate adjustment cylinder 3311, the extension and retraction of the clamping plate adjustment cylinder 3311 realizes the synchronous rotation of the two drive rods 371, driving the bag holding mechanism 39 below to complete the opening and closing action. Taking the clamping and closing action as an example, Figure 7 As shown, the push rod of the clamping plate adjusting cylinder extends. At this time, both the left and right drive rods in the figure are rotating shafts. The push rod applies a force to the left, causing the left bag-holding mechanism to move to the right through the lever structure. During the rotation of the first connecting arm, the long connecting rod connected to its center pulls the bottom of the right second connecting arm, causing the right bag-holding mechanism to move to the left. The reaction force generated by the fixed end of the clamping plate adjusting cylinder when the push rod extends also generates a force on the second connecting arm, causing the left and right bag-holding mechanisms to move towards each other to complete the bag clamping and holding, ensuring the consistency of the opening and closing actions.

[0044] A bag pushing mechanism 24 is installed at the bottom of the bag compartment 21. Several transverse bag pushing slots are provided inside the bag compartment 21 for the bag pushing rod in the bag pushing mechanism 24 to pass through. The bottom of the bag pushing rod is raised and lowered by a lifting cylinder, and the bag pushing action is completed by a transversely arranged screw moving assembly. The bag picking mechanism 22 above the bag compartment 21 includes a bag clamping moving assembly 221 arranged in the same direction as the bag pushing rod. A bag picking cylinder located at the top of the bag compartment 21 is installed at the end of the bag clamping moving assembly 221. A lifting rod is connected below the bag picking cylinder. A suction cup assembly 222 arranged along the length of the packaging bag is installed at the end of the lifting rod. The bag picking mechanism 22 transfers the packaging bag in the bag compartment 21 to the upper bag platform 23 on the side. Adjustable bag baffles are provided on both sides of the conveyor belt in the center of the upper bag platform 23. The bag baffles are installed in a staggered manner with the bag clamping moving assembly 221. The upper bag platform 23 is close to An L-shaped baffle 231 is provided on one side of the bag-loading mechanism 40. The bottom of the baffle 231 is connected to a bushing installed on the rotating shaft. A push plate cylinder 232 is connected to the middle section of the rotating shaft. The fixed end of the push plate cylinder 232 is connected to the bag-loading platform 23. After the packaging bag is sorted to one side by the bag-pushing mechanism from the bag bin, it is lowered by the bag-removing cylinder and then lifted by the suction cup assembly. The bag-clamping moving component on the side moves to the bottom of the bag-removing cylinder and clamps the packaging bag to the center of the bag-loading platform. After the clamping claw is released, the bag falls on the surface of the conveyor belt and is repositioned by the bag-clamping plates on both sides. The conveyor belt loads the bags in an orderly manner. The L-shaped baffle on the side of the bag-loading platform near the bag-loading mechanism moves according to the working state of the bag-loading mechanism. When the bag-loading mechanism is clamping the previous set of packaging bags and transferring them to the bag-clamping mechanism, the working rod of the push plate cylinder pushes the baffle upward to prevent the packaging bags on the bag-loading platform from moving.

[0045] like Figure 1 , Figure 8 , Figure 9 and Figure 10 As shown, the filling assembly 50 includes a hopper 51 mounted on the upper frame structure 10. The filling head 53 is connected to the hopper 51 via a long material pipe 52. An exhaust pipe 54 connected to a dust removal device is arranged around the long material pipe 52. The bag mouth clamping assembly 57 includes a multi-layer plate 56 connected to a chain drive mechanism 55. A through hole is opened in the center of the multi-layer plate 56 for the filling head 53 to pass through. At least four sets of weighing sensors 58 are installed inside the multi-layer plate 56, distributed at the corners of the middle layer, to detect the weight of the material in the packaging bag below in real time, ensuring filling accuracy. Two sets of horizontally arranged slide rails are installed on the bottom surface of the multi-layer plate 56. Adjustment blocks located on the left and right sides of the filling head 53 are fixed on the sliders on the slide rail surfaces. A cylinder-driven bag clamping claw 571 is installed below the adjustment blocks. Figure 10As shown, a pulley assembly is installed between the two sets of slide rails. Locking blocks are installed on opposite sides of the two sets of adjusting blocks to connect the conveyor belts of the pulley assembly, enabling them to move in opposite directions. Taking the counterclockwise rotation of the pulley assembly as an example, the upper belt moves to the left and the lower belt moves to the right. The adjusting block on the right side is connected to the belt above the locking block, and the adjusting block on the left side is connected to the belt below the locking block. When the belt rotates, the two sets of adjusting blocks move along the slide rails toward the filling head, cooperating with the bag-swapping gripper to fix the bag opening, so that the center of the bag opening opens to complete the bag-swapping action. A sleeve fitted onto the outside of the filling head 53 is installed in the through hole of the multi-layer plate 56. Pen-shaped cylinders are installed on the front and rear sides of the sleeve, respectively. The output end of the pen-shaped cylinder is connected to the lever. The rod structure is connected to the rotating shaft, and a U-shaped bag support plate 572 located below the sleeve is connected to the inner side of the rotating shaft. After the bag wiping action is completed, the bag opening is in an open state. In the prior art, the filling head directly descends for filling. When the bag wiping action is not standard and the bag opening is too small, malfunctions are likely to occur. Therefore, this application has a bag support plate movably installed at the bottom of the sleeve located outside the filling head. The top rod of the pen-shaped cylinder is extended in the initial state, so that the bottoms of the two bag support plates abut against each other. After the bag opening is opened, the bag opening clamping assembly rises and the two bag support plates enter the bag opening. After rising to the position, the pen-shaped cylinder retracts the top rod, and the bag support plates open to open the bag opening, so that the bag opening is at a fixed size for each action, which facilitates filling by the filling head and can also play a role in blocking powder dust.

[0046] The sealing station 90 is equipped with a sealing assembly fixed on the frame structure 10. A sealing clamp 92 is symmetrically arranged below the sealing assembly. The top of the sealing clamp 92 is connected to the cylinder slide rail assembly 95 to achieve opposite or reverse movement. A sealing heating module 91 is arranged inside the sealing clamp 92. A through hole is opened in the center of the sealing assembly for a vertically movable through flat tube 93 to pass through. The top of the through flat tube 93 is connected to an external nitrogen filling module or vacuum module. A suction cup 94 connected to the cylinder is arranged below the through flat tube 93 for opening the bag mouth.

[0047] How this application works:

[0048] After the packaging bags are sorted to one side by the bag pushing mechanism from the bag hopper, they are lowered by the bag picking cylinder, adsorbed by the suction cup group, and then raised. The bag clamping moving component on the side moves to the bottom of the bag picking cylinder, and the packaging bags are clamped by the grippers and moved to the center of the bag. After the grippers are released, the bags fall on the surface of the conveyor belt, and the bag clamping plates on both sides reposition the bags. The conveyor belt loads the bags in an orderly manner. The L-shaped baffle on the side of the bag loading platform near the bag loading mechanism moves according to the working status of the bag loading mechanism. When the bag loading mechanism is clamping the previous set of packaging bags and transferring them to the bag clamping mechanism, the working rod of the push plate cylinder pushes the baffle upward to prevent the packaging bags on the bag loading platform from moving.

[0049] The bag-loading mechanism clamps and rotates the horizontally placed packaging bag to a vertical position, and then the bag-clamping mechanism on the side of the upper conveying assembly near the bag-loading mechanism clamps and conveys it to the filling station;

[0050] The push rod of the clamp adjusting cylinder extends, at which point... Figure 7 As shown, both the left and right active rods are rotating shafts. The top rod applies force to the left, causing the left bag-holding mechanism to move to the right through the lever structure. During the rotation of the first connecting arm, the long connecting rod connected to its center pulls the bottom of the right second connecting arm, causing the right bag-holding mechanism to move to the left. The reaction force generated by the fixed end of the clamping plate adjusting cylinder when the top rod extends also generates force for the second connecting arm, causing the left and right bag-holding mechanisms to move towards each other to complete the bag clamping and holding. When the upper conveying component needs to move laterally, the servo motor drives the lead screw to rotate, and the sliding block threadedly connected to the lead screw and adjacent to it moves towards the filling station. Since the two sliding blocks are connected by a synchronous connecting rod, the two sets of sliding blocks and the two sets of bag-holding mechanisms fixed on the synchronous connecting rod also move accordingly, moving the empty bag at the bag clamping mechanism to the filling station, moving the filled packaging bag at the filling station to the sealing station, and moving the sealed packaging bag at the sealing station to the unloading bag clamping belt group to complete the unloading.

[0051] After the empty bag arrives at the filling station, the bag-wiping gripper fixes the two ends of the bag opening and performs the bag-wiping action. The bottom of the independent load-bearing plate is connected to a lifting cylinder, which can rise together with the bag opening clamping assembly through the chain drive mechanism, so that the bag-supporting plate is inserted into the open bag opening. After rising to the position, the pen-shaped cylinder retracts the top rod, and the bag-supporting plate opens the bag opening. At this time, the filling head descends into the bag body for filling. During the filling process, the surrounding air extraction pipes are connected to external dust removal equipment for dust removal. According to the weight of the bag material detected in real time by the weighing sensor, the independent load-bearing plate slowly descends until it is at the same height as the conveyor belt on the adjacent side. After the filling is completed, the new empty bag is also in place at the bag clamping mechanism, and the above step 3 is performed to complete one packaging cycle.

[0052] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0053] The examples above are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. A fully automatic bottom-fill degassing packaging machine, comprising a double-layer frame structure (10), characterized in that, It also includes a bag hopper assembly (20) located behind the frame structure (10), an upper conveying assembly (30) located in the lower frame structure (10) in front of the bag hopper assembly (20), and a lower conveying assembly (60) located below the upper conveying assembly (30). The upper conveying assembly (30) is provided with two sets of bag holding mechanisms (39) in sequence along the conveying direction, which serve as a filling station (80) and a sealing station (90) respectively. A material clamping belt assembly (100) is provided on the side of the sealing station (90) away from the filling station (80). A filling assembly (50) is provided on the upper frame structure (10) directly above the filling station (80). A bag feeding mechanism (40) is provided between the bag hopper assembly (20) and the upper conveying assembly (30). The upper conveying assembly (30) is provided with bag-holding mechanisms (39) on the front and rear sides of the filling station (80) and the sealing station (90). The upper conveying assembly (30) includes vertical plates (31) fixed on the frame structure (10) on both sides. A guide rod (32) is installed between the two vertical plates (31) along the conveying direction. At least two sets of sliding blocks (33) are provided on the guide rod (32). A clamping plate adjustment mechanism (331) is installed on the sliding block (33). A clamping plate adjustment mechanism (331) is symmetrically arranged between the two sets of sliding blocks (33) on the guide rod. (32) Two sets of synchronous connecting rods (37) on the inner side, a first partition (34) and a second partition (35) are installed on the guide rod (32) between the sliding blocks (33) and spanning above the synchronous connecting rod (37). A screw rod (36) is installed between the first partition (34) and the adjacent vertical plate (31). The center of the sliding block (33) near the first partition (34) is threaded to the screw rod (36). A bag clamping mechanism (38) is provided on the synchronous connecting rod (37) between the first partition (34) and the adjacent vertical plate (31). The filling assembly (50) is connected to the hopper assembly (70) mounted on the upper side frame structure (10). The filling assembly (50) includes a filling head (53), which is connected to the bag mouth clamping assembly (57) below via a chain drive mechanism (55). A hopper (51) is provided on the upper frame structure (10), and the filling head (53) is connected to the hopper (51) below via a long material pipe (52). An exhaust pipe (54) for connecting a dust removal device is provided around the long material pipe (52). The bag mouth clamping assembly (57) includes a multi-layer plate (56) connected to the chain drive mechanism (55). A through hole is provided in the center of the multilayer plate (56) for the filling head (53) to pass through. At least four sets of weighing sensors (58) are installed inside the multilayer plate (56). Two sets of horizontally arranged slide rails are installed on the bottom surface of the multilayer plate (56). Adjustment blocks located on the left and right sides of the filling head (53) are fixed on the sliders on the surface of the slide rails. A pneumatically driven bag-wiping gripper (571) is installed below the adjustment block. A pulley assembly is provided between the two sets of slide rails. Locking blocks are provided on opposite sides of the two sets of adjustment blocks. The conveyor belt of the pulley assembly is connected to the pulley assembly to achieve opposite or reverse movement. The bag-wiping action is completed by fixing the bag mouth of the packaging bag through the bag-wiping gripper (571). The multi-layer plate (56) has a sleeve installed in the through hole and attached to the outside of the filling head (53). Pen-shaped cylinders are installed on the front and rear sides of the sleeve respectively. The output end of the pen-shaped cylinder is connected to the rotating shaft through a lever structure. The inner side of the rotating shaft is connected to a U-shaped bag support plate (572) located below the sleeve.

2. The fully automatic bottom-fill degassing packaging machine according to claim 1, characterized in that, The bag assembly (20) includes a horizontally arranged bag compartment (21) and a bag-retrieving mechanism (22) located on top of the bag compartment (21). An upper bag platform (23) is installed on the side of the bag compartment (21) perpendicular to the lateral movement direction of the bag-retrieving mechanism (22). A bag-pushing mechanism (24) is installed at the bottom of the bag compartment (21). Several transverse bag-pushing grooves are provided inside the bag compartment (21) for the bag-pushing rod in the bag-pushing mechanism (24) to pass through. The bottom of the bag-pushing rod is raised and lowered by a lifting cylinder, and the bag is lifted through transversely arranged wires. The pusher assembly completes the bag pushing action. The bag taking mechanism (22) above the bag compartment (21) includes a bag clamping assembly (221) arranged in the same direction as the pusher assembly. The bag clamping assembly (221) is equipped with a bag taking cylinder located at the top of the bag compartment (21). The bag taking cylinder is connected to a lifting rod. The lifting rod is equipped with a suction cup assembly (222) arranged along the length of the packaging bag. The bag taking mechanism (22) transfers the packaging bag in the bag compartment (21) to the upper bag platform (23) on the side.

3. The fully automatic bottom-fill degassing packaging machine according to claim 2, characterized in that, The conveyor belt at the center of the bag-up platform (23) is provided with adjustable baffles on both sides. The baffles are installed in a staggered manner with the bag-clamping moving assembly (221). An L-shaped baffle (231) is provided on the side of the bag-up platform (23) near the bag-up mechanism (40). The bottom of the baffle (231) is connected to a bushing installed on the rotating shaft. A push plate cylinder (232) is connected in the middle section of the rotating shaft. The fixed end of the push plate cylinder (232) is connected to the bag-up platform (23).

4. The fully automatic bottom-fill degassing packaging machine according to claim 1, characterized in that, The bag-holding mechanism (39) includes a crank arm connecting rod assembly (391) fixed below the synchronous connecting rod (37), a bag mouth clamp (392) connected to the inner side of the crank arm connecting rod assembly (391), and a height-adjustable bag-holding plate (393) installed above the crank arm connecting rod assembly (391). The synchronous connecting rod (37) includes an active rod (371) connected to the clamp adjustment mechanism (331) and a driven rod (372) located outside the active rod (371).

5. The fully automatic bottom-fill degassing packaging machine according to claim 1, characterized in that, The sliding block (33) is hollow inside for mounting the clamp adjustment mechanism (331). The clamp adjustment mechanism (331) includes a clamp adjustment cylinder (3311). The push rod at the output end of the clamp adjustment cylinder (3311) is connected to the first connecting arm (3312). The other end of the first connecting arm (3312) is fixed to the corresponding active rod (371). The fixed end of the clamp adjustment cylinder (3311) is connected to the second connecting arm (3313). The center of the second connecting arm (3313) is fixed at... On the corresponding side of the active rod (371), the center of the first connecting arm (3312) is connected to the side of the second connecting arm (3313) away from the fixed end of the clamping plate adjusting cylinder (3311) through the long connecting rod (3314). Limit switches (3315) are installed on the sliding blocks (33) on the front and rear sides of the clamping plate adjusting cylinder (3311). The synchronous rotation of the active rods (371) on both sides is achieved by the extension and retraction of the clamping plate adjusting cylinder (3311), which drives the bag holding mechanism (39) below to complete the opening and closing action.

6. The fully automatic bottom-fill degassing packaging machine according to claim 1, characterized in that, The sealing station (90) is equipped with a sealing assembly fixed on the frame structure (10). A sealing clamp (92) is symmetrically arranged below the sealing assembly. The top of the sealing clamp (92) is connected to the cylinder slide rail assembly (95) to achieve opposite or reverse movement. A sealing heating module (91) is arranged inside the sealing clamp (92). A through hole is opened in the center of the sealing assembly for a vertically movable through flat tube (93) to pass through. The top of the through flat tube (93) is connected to an external nitrogen filling module or vacuum module. A suction cup (94) connected to the cylinder is arranged below the through flat tube (93) for opening the bag mouth.

7. The fully automatic bottom-fill degassing packaging machine according to claim 1, characterized in that, The lower conveyor assembly (60) is located below the filling station (80), the sealing station (90), and the unloading bag clamping belt assembly (100), including an independent load-bearing plate located directly below the filling station (80) and a conveyor belt located directly below the sealing station (90) and the unloading bag clamping belt assembly.

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