Ton-filling powder packaging machine

Abstract

The ton-filling powder packaging machine comprises a rack structure, a conveying mechanism is arranged at the bottom of the rack structure, a tank body with a positioning frame is placed on the surface of the conveying mechanism, a flange is arranged at the top of the tank body, a valve element is installed in the center of the neck of the flange, and a filling station and a detection station are sequentially arranged at the top of the conveying mechanism in the conveying direction. A jacking mechanism is arranged at the position, under the filling station, of the bottom of the conveying mechanism, a three-axis transverse moving module used for adjusting the position of a tank is arranged in the jacking mechanism, a floating mechanism internally and flexibly connected is installed on the position, over the filling station, of the rack structure, and the top of the floating mechanism is connected with an external material box. A valve opening mechanism is connected to the side, close to the tank top flange, of the floating mechanism, and a visual detection module is mounted on the side, close to the tank, of the top of the rack structure. According to the automatic packaging machine, customized packaging machine design is carried out on ton-scale tanks, automatic alignment and deviation correction are carried out on flanges at the tops of the tanks, ton-filling automatic high-precision sealing packaging operation of fluoride salt powder is achieved, and the production efficiency and the filling precision are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of powder packaging, in particular to a ton-filling powder packaging machine. Background Art

[0002] Fluoride salt refers to a salt compound containing fluoride ions in the form of white powder or white crystals, with a mesh size of 30 to 200. Common examples include sodium fluoride, potassium fluoride, ammonium fluoride, aluminum fluoride, calcium fluoride, cryolite, etc. Most fluoride salts are toxic and corrosive. Contact with dust, aerosols, and solutions can irritate the skin. When exposed to air, they can easily react chemically with moisture and oxygen in the air to produce harmful substances such as hydrogen fluoride, causing environmental pollution and personal injury.

[0003] In the existing technology, valve bags or ton bags are usually used to package this type of material. With the updating and iteration of technology, vacuum tank structures used for fluoride salt powder packaging have appeared in the industry to achieve the packaging of tons of powder. Vacuum tank structures are usually used for liquid or fluid packaging operations. The packaging of fluoride salt needs to meet rigid requirements such as moisture-proof, corrosion-resistant, precise measurement, and sealing. Traditional tank packaging equipment cannot be directly applied to the packaging of fluoride salt powder vacuum tanks, and traditional semi-automatic production is difficult to control the filling accuracy. Manual valve opening has certain safety hazards, which affects production efficiency. Therefore, there is an urgent need for a ton-level packaging equipment for can packaging of powder materials such as fluoride salt. Summary of the Invention

[0004] In order to solve the above technical problems, a ton-filling powder packaging machine is provided.

[0005] To achieve the above-mentioned objectives, the present invention discloses a ton-filling powder packaging machine, comprising a frame structure, a conveying mechanism is provided at the bottom of the frame structure, a tank body with a positioning frame is placed on the surface of the conveying mechanism, a flange is provided on the top of the tank body, a valve core is installed at the center of the flange neck, a filling station and an inspection station are sequentially arranged on the top of the conveying mechanism along the conveying direction, a lifting mechanism is provided at the bottom of the conveying mechanism directly below the filling station, a three-axis transverse movement module for adjusting the position of the tank body is provided in the lifting mechanism, an internal soft-connected floating mechanism is installed on the frame structure directly above the filling station, the top of the floating mechanism is connected to an external material box, the side of the floating mechanism close to the flange on the top of the tank body is connected to a valve opening mechanism, and a visual inspection module is installed on the side of the top of the frame structure close to the tank body.

[0006] Furthermore, the floating mechanism includes a mounting plate fixed to the top of the frame structure, a movable plate is provided under the mounting plate, a center opening of the mounting plate and a first bellows is provided, a movable plate is connected under the first bellows, a second bellows is connected to the bottom of the movable plate through a ball valve, a feed pipe is installed at the bottom of the second bellows, a bottom plate fixedly connected to the movable plate through a guide rod is installed at the bottom of the feed pipe, a positioning mechanism is installed under the bottom plate, two groups of relatively arranged ranging sensors are staggered between the positioning mechanisms, a servo motor-driven screw lifting module is symmetrically installed on both sides of the first bellows for adjusting the height of the positioning mechanism, the top of the first bellows is fixedly connected to the top plate fixed above the mounting plate, a third bellows is installed above the top plate to connect the external material box, a nitrogen filling assembly is provided along the conveying direction of the feed pipe, an elastic support seat connected to the bottom plate is provided on the outer wall of the feed pipe, and one side of the elastic support seat is connected to the valve opening mechanism.

[0007] Furthermore, the positioning mechanism is composed of at least three groups of pressure wheel assemblies circumferentially distributed on the periphery of the conveying pipe, including a bracket connected to the bottom of the conveying pipe and a pressure rod arranged under the bracket, the movable end on the outside of the pressure rod is connected to the output end of the pressure cylinder, the top of the pressure cylinder is movably connected to the top of the bracket, the bottom of the bracket is movably connected to the center fulcrum of the pressure rod, and a movable guide wheel is installed on the inside of the pressure rod.

[0008] The cam is secured to the bottom of the drive shaft and is adapted to engage the gears of the control wheel, the cam being secured to the bottom of the drive shaft and being adapted to engage the gears of the control wheel.

[0009] Furthermore, the nitrogen filling assembly includes a nitrogen filling pipe and a nitrogen unloading pipe arranged on both sides of the feeding pipe, which are used for sealing detection and moisture detection before filling and secondary nitrogen filling operations after filling.

[0010] Furthermore, the jacking mechanism includes a support plate and a holder arranged on the top of the support plate, a slot is provided on the surface of the holder for positioning the positioning frame on the outside of the tank body, and a three-axis transverse movement module is provided at the bottom of the support plate, including an X-axis transverse movement module arranged in the same direction as the conveying direction, a Y-axis transverse movement module arranged perpendicular to the X-axis transverse movement module, and a jacking cylinder arranged at the bottom center of the support plate, the output end of the jacking cylinder is connected to the bottom of the support plate, the bottom plate surface of the Y-axis transverse movement module is fixedly connected to the frame structure, a telescopic guide rod is provided between the support plate and the plate surface installed on the top of the slider corresponding to the X-axis transverse movement module, and load-bearing bars arranged parallel to the moving direction of the Y-axis transverse movement module are installed at the bottom of the support plate on both sides of the telescopic guide rod, and load-bearing blocks driven by cylinders are symmetrically installed on the plate surface at the top of the slider corresponding to the X-axis transverse movement module, and the load-bearing blocks are installed on the top of the slider corresponding to the slide rail arranged parallel to the moving direction of the X-axis transverse movement module.

[0011] Furthermore, the visual inspection module includes a 3D camera installed on the frame structure above the inspection station and a 2D camera installed on the frame structure above the filling station. There are at least two groups of 2D cameras, each located above the diagonal position of the tank positioning frame.

[0012] Furthermore, the conveying mechanism adopts a conveying roller assembly, and the top of the conveying roller assembly is respectively installed with guide roller assemblies on both sides of the filling station and the inspection station, and the spacing is adjusted by a cylinder. The position of the conveying roller assembly corresponding to the jacking mechanism is provided with a conveying roller spacing matching the length of the card holder to facilitate the card holder to pass through the conveying rollers.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention discloses a ton-filling powder packaging machine, which determines the relative position of the tank body by imaging with a 3D camera at the detection station, and then the conveying mechanism moves the tank body to the filling station, and the lifting mechanism lifts the tank body upward until the tank body flange abuts the bottom flange of the feed pipe, and the flange center is corrected by a 2D camera and a ranging sensor, and the position is adjusted by the three-axis lateral movement module at the bottom of the lifting mechanism. After the centering is completed, nitrogen is flushed in for sealing detection and moisture detection. After the detection is qualified, the valve core in the center of the tank body flange is opened by the valve opening mechanism for filling operation. After the filling is completed, secondary nitrogen filling is performed to ensure the positive pressure in the tank body. The load-bearing bar and the load-bearing block combination of the lifting mechanism ensure the rigid connection during the filling process, and the soft connection form of the floating mechanism ensures the filling accuracy. By customizing the packaging machine design for ton-level tank bodies, the ton-filling automated high-precision packaging operation of fluoride salt powder is realized, which greatly improves the production efficiency and filling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the tank top flange of the present invention.

[0017] Figure 3 It is a side view of the position of the floating mechanism and the valve opening mechanism of the present invention.

[0018] Figure 4 It is a schematic diagram of the floating mechanism of the present invention.

[0019] Figure 5 This is a schematic diagram of the installation position of the valve opening mechanism and the material delivery pipe of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the valve opening mechanism of the present invention.

[0021] Figure 7 This is a structural schematic diagram of the valve opening mechanism of the present invention without the fan-shaped fixing plate.

[0022] Figure 8 It is a schematic diagram of the jacking mechanism of the present invention.

[0023] Figure 9 It is a front view of the jacking mechanism of the present invention.

[0024] Figure 10 This is a schematic diagram of the installation position of the visual detection module of the present invention.

[0025] Figure 11 Schematic diagram of the conveying mechanism of the present invention.

[0026] In the figure: 10 is a frame structure; 11 is a filling station; 12 is a detection station; 20 is a conveying mechanism; 21 is a conveying roller assembly; 22 is a guide roller assembly; 30 is a lifting mechanism; 31 is a support plate; 311 is a load-bearing bar; 32 is a card seat; 33 is an X-axis lateral movement module; 34 is a Y-axis lateral movement module; 35 is a lifting cylinder; 35 is a load-bearing block; 40 is a floating mechanism; 41 is a first bellows; 42 is a second bellows; 43 is a third bellows; 44 is a screw lifting module; 45 is a ball valve; 46 is a feed pipe; 461 is an elastic support seat; 4 7 is a positioning mechanism; 471 is a bracket; 472 is a pressing cylinder; 473 is a pressure rod; 48 is a nitrogen charging assembly; 49 is a distance sensor; 50 is a valve opening mechanism; 51 is a fan-shaped fixing plate; 52 is a first motor; 521 is a gear; 53 is an arc-shaped slide rail; 54 is an alignment plate; 541 is an arc-shaped rack; 55 is a linear slide rail; 56 is a valve opening positioning block; 57 is a second motor; 58 is a pen-shaped cylinder; 59 is a valve core positioning sensor; 60 is a visual inspection module; 61 is a 3D camera; 62 is a 2D camera; 70 is a tank body; 71 is a positioning frame. DETAILED DESCRIPTION

[0027] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] One embodiment of the present invention, as Figures 1 to 11 As shown, a conveying mechanism 20 is provided at the bottom of the frame structure 10, and a tank body 70 with a positioning frame 71 is placed on the surface of the conveying mechanism 20. In this embodiment, the maximum loading capacity of the tank body is 1.5T. Figure 2 As shown, a flange is provided on the top of the tank body 70, and a valve core is installed at the center of the flange neck. A filling station 11 and an inspection station 12 are sequentially arranged on the top of the conveying mechanism 20 along the conveying direction. A lifting mechanism 30 is provided at the bottom of the conveying mechanism 20 just below the filling station 11. A three-axis transverse movement module for adjusting the position of the tank body 70 is provided in the lifting mechanism 30. An internal soft-connected floating mechanism 40 is installed on the frame structure 10 just above the filling station 11. The top of the floating mechanism 40 is connected to an external material box. The side of the floating mechanism 40 close to the top flange of the tank body 70 is connected to a valve opening mechanism 50. A visual inspection module 60 is installed on the side of the top of the frame structure 10 close to the tank body 70. In this application, position movement is quantitatively controlled by components such as photoelectric sensors. After the relative position of the tank body is determined by imaging with a 3D camera at the inspection station, the conveying mechanism moves the tank body to the filling station, and the lifting mechanism 30 moves the tank body to the filling station. The structure lifts the tank body upward until the tank flange abuts the bottom flange of the feed pipe, and the flange center is corrected by a 2D camera and a distance sensor. The position is adjusted by the three-axis transverse movement module at the bottom of the lifting mechanism. After the centering is completed, nitrogen is flushed in for sealing and moisture detection. After all the tests are qualified, the valve core in the center of the tank flange is opened by the valve opening mechanism for filling operations. After filling, nitrogen is filled again to ensure the positive pressure in the tank body. The load-bearing bar and load-bearing block combination of the lifting mechanism ensures a rigid connection during the filling process. The three-axis transverse movement module of the lifting mechanism cooperates with the visual inspection module to achieve precise positioning of the tank body, ensuring zero deviation docking of the feed pipe at the filling port position with the tank flange. The soft connection form of the floating mechanism ensures filling accuracy. By customizing the packaging machine design for tons of tanks, the automatic high-precision packaging operation of fluoride salt powders is realized, which greatly improves production efficiency and filling accuracy.

[0029] like Figure 3 and Figure 4As shown, the floating mechanism 40 includes a mounting plate fixed to the top of the frame structure 10, a movable plate is provided below the mounting plate, a hole is opened in the center of the mounting plate and a first bellows 41 is provided, a movable plate is connected below the first bellows 41, a second bellows 42 is connected to the bottom of the movable plate through a ball valve 45, a feed pipe 46 is installed at the bottom of the second bellows 42, a bottom plate fixedly connected to the movable plate through a guide rod is installed at the bottom of the feed pipe 46, a positioning mechanism 47 is installed below the bottom plate, two sets of relatively arranged distance measuring sensors 49 are staggered between the positioning mechanisms 47, a screw rod lifting module 44 driven by a servo motor is symmetrically installed on both sides of the first bellows 41, and the distance measuring sensor monitors in real time Measure the distance between the feed pipe and the flange, and adjust the height of the positioning mechanism 47 by the servo motor of the linked screw lifting module. The top of the first bellows 41 is fixedly connected to the top plate fixed above the mounting plate. A third bellows 43 is installed above the top plate to connect to the external material box. The feed pipe 46 is provided with a nitrogen filling assembly 48 along the conveying direction. An elastic support seat 461 connected to the bottom plate is provided on the outer wall of the feed pipe 46. One side of the elastic support seat 461 is connected to the valve opening mechanism 50. The three-layer bellows structure of the floating mechanism 40 forms a soft-connected flexible sealing channel to avoid the risk of leakage caused by hard connection. The elastic support seat and the ball valve connection structure buffer filling vibration, prevent powder from being scattered, and ensure metering stability.

[0030] like Figure 3 、 Figure 4 and Figure 5 As shown, the positioning mechanism 47 is composed of at least three groups of pressure wheel assemblies circumferentially distributed on the periphery of the feed pipe 46, including a bracket 471 connected to the bottom of the feed pipe 46 and a pressure rod 473 arranged below the bracket 471, the movable end on the outer side of the pressure rod 473 is connected to the output end of the pressure cylinder 472, the top of the pressure cylinder 472 is movably connected to the top of the bracket 471, the bottom of the bracket 471 is movably connected to the central fulcrum of the pressure rod 473, and a movable guide wheel is installed on the inner side of the pressure rod 473. The three groups of pressure wheel assemblies are driven by the pressure cylinder, and the tank flange is dynamically clamped by the movable guide wheel to adapt to the manufacturing tolerance of the tank.

[0031] like Figure 3 、 Figure 5 、 Figure 6 and Figure 7As shown, the valve opening mechanism 50 includes a fan-shaped fixed plate 51 fixed to one side of the elastic support seat 461, a first motor 52 is installed on the top of the fan-shaped fixed plate 51, and an arc-shaped slide rail 53 is provided along the arc edge of the bottom of the fan-shaped fixed plate 51. At least two groups of sliders are provided on the arc-shaped slide rail 53 to connect to the alignment plate 54 below. The bottom output end of the first motor 52 is connected to a gear 521, and a groove concentrically arranged with the arc-shaped slide rail 53 is provided on the top of the alignment plate 54. An arc-shaped rack 541 meshing with the gear 521 is fixed in the groove. The gear assembly is driven by the first motor 52 to drive the alignment plate 54 to rotate along the arc-shaped slide rail 53. A linear slide rail 55 radially arranged relative to the feed pipe 46 is installed at the bottom of the alignment plate 54, and the bottom of the slider corresponding to the linear slide rail 55 is connected to the valve opening positioning block 56. The valve opening positioning block 56 is driven by the second motor 57. A pen-shaped cylinder 58 is installed on the side of the slider corresponding to the linear slide 55 to drive the valve opening positioning block 56 to move radially. The height of the valve opening positioning block 56 matches the valve core position after the feed pipe 46 abuts against the top flange of the tank body 70. A valve core positioning sensor 59 is installed above the valve opening positioning block 56 corresponding to the side plane of the flange. Due to the manufacturing accuracy of the tank flange, the plane of the flange will have some angular deviation. The valve opening mechanism drives the alignment plate to rotate through the arc slide and the gear rack, combined with the radial adjustment of the linear slide, automatically matching the valve core position at different angles. The valve core positioning sensor detects the flange plane in real time, and the pen-shaped cylinder pushes the valve opening positioning block. The second motor drives the valve opening positioning block to unscrew the valve core, and the valve is opened automatically without manual contact throughout the process.

[0032] like Figure 4 and Figure 5 As shown, the nitrogen filling assembly 48 includes a nitrogen filling pipe and a nitrogen unloading pipe arranged on both sides of the feed pipe 46, which are used for sealing detection and moisture detection before filling and secondary nitrogen filling operation after filling, completely isolating air moisture and preventing fluoride salt from deliquescing and producing toxic hydrogen fluoride.

[0033] like Figure 8 and Figure 9As shown, the lifting mechanism 30 includes a support plate 31 and a base 32 arranged on the top of the support plate 31. A slot is provided on the surface of the base 32 for positioning the positioning frame 71 outside the tank body 70. A three-axis transverse movement module is provided at the bottom of the support plate 31, including an X-axis transverse movement module 33 arranged in the same direction as the conveying direction, a Y-axis transverse movement module 34 arranged perpendicular to the X-axis transverse movement module 33, and a lifting cylinder 35 arranged at the center of the bottom of the support plate 31. The output end of the lifting cylinder 35 is connected to the bottom of the support plate 31, and the bottom plate surface of the Y-axis transverse movement module 34 is fixedly connected to the frame structure 10. The support plate 31 is fixed to the frame structure 10. A telescopic guide rod is arranged between the plates installed on the top of the slider corresponding to the X-axis transverse module 33 to ensure that the jacking process is smooth and to prevent the tank from tipping over. The bottom of the support plates 31 on both sides of the telescopic guide rod is installed with a load-bearing bar 311 arranged parallel to the moving direction of the Y-axis transverse module 34. The plate surface on the top of the slider corresponding to the X-axis transverse module 33 is symmetrically installed with a load-bearing block 36 driven by a cylinder. The load-bearing block 36 is installed on the top of the slider corresponding to the slide rail arranged parallel to the moving direction of the X-axis transverse module 33. The load-bearing structure disperses the load of the tank, maintains a rigid connection during the filling process, and prevents deformation of the X / Y-axis transverse module.

[0034] like Figure 10 As shown, the visual inspection module 60 includes a 3D camera 61 installed on the frame structure 10 above the inspection station 12 and a 2D camera 62 installed on the frame structure 10 above the filling station 11. The 2D camera 62 is provided with at least two groups, which are respectively located above the diagonal positions of the positioning frame 71 of the tank body 70. After performing 3D imaging at the inspection station, it advances to the filling station to perform a correction on the tank flange. Combined with the ranging sensor, the flange is corrected twice to ensure the accuracy of the centering connection.

[0035] like Figure 11 As shown, the conveying mechanism 20 adopts a conveying roller assembly 21. The top of the conveying roller assembly 21 is respectively installed with guide roller assemblies 22 on both sides of the filling station 11 and the inspection station 12, and the spacing is adjusted by a cylinder. When using different tank sizes, the position of the conveying roller assembly 21 corresponding to the jacking mechanism 30 is provided with a conveying roller spacing that matches the length of the card holder 32 to facilitate the card holder 32 to pass through the conveying rollers.

[0036] The working principle of this embodiment is as follows: 1. Set appropriate filling parameters according to the tank specifications, such as the spacing of the guide roller components of the conveying mechanism, the lifting height of the screw lifting module, etc. 2. The tank body first passes through the inspection station for 3D camera imaging scanning to confirm that the station has a tank body. The tank body is then moved to the filling station by the conveying mechanism. The lifting cylinder of the lifting station lifts the tank body. The 2D camera above the filling station scans the opposite corners of the positioning block on the outside of the tank body to achieve a primary deviation correction of the flange center. The position is adjusted by the X / Y axis traverse module. 3. The distance sensor at the positioning mechanism detects the distance to the flange edge to implement secondary deviation correction. After the X / Y axis lateral movement module is adjusted, the load-bearing block moves inward to below the load-bearing bar, the lifting cylinder resets and descends, and the tank body is rigidly supported by the load-bearing block. 4. The screw lifting module descends until it contacts the flange. At this time, the pressing cylinder of the positioning mechanism opens the pressing rod. After the bottom of the feed pipe contacts the flange, the pressing cylinder push rod extends, driving the pressing rod and the movable guide wheel to press the flange edge. 5. After the connection is completed, nitrogen is introduced into the nitrogen filling pipe to perform a sealing test and a moisture test on the tank body to ensure that a positive pressure of 60kPa to 80kPa is maintained inside the tank body. The valve is opened after all the above tests are qualified. 6. Based on the flange plane angle data collected by the valve core positioning sensor, the first motor drives the rack and pinion assembly to control the rotation of the alignment plate until it is aligned with the center of the flange plane. The pen-shaped cylinder pushes the valve opening positioning block to connect with the valve core. The second motor rotates to unscrew the valve core and the filling operation begins. 7. After filling is completed, nitrogen is introduced to replenish the pressure. After closing the valve, the positioning mechanism releases the flange, the floating mechanism rises, and the lifting mechanism resets so that the tank body falls on the conveying mechanism, and the tank body is moved away from the packaging machine, completing a filling process.

[0037] Several points that need to be explained are: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, which can be mechanical connection or electrical connection, or internal communication between two elements, or direct connection. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may change; secondly, in this article, relational terms such as first and second are only used to distinguish one entity from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities.

[0038] The above examples are merely illustrative of the present invention and do not limit the scope of protection of the present invention. Any design that is identical or similar to the present invention shall fall within the scope of protection of the present invention.

Claims

1. A ton-filling powder packaging machine, comprising a frame structure (10), characterized in that: A conveying mechanism (20) is provided at the bottom of the frame structure (10), a tank body (70) with a positioning frame (71) is placed on the surface of the conveying mechanism (20), a flange is provided on the top of the tank body (70), a valve core is installed at the center of the flange neck, a filling station (11) and an inspection station (12) are sequentially provided on the top of the conveying mechanism (20) along the conveying direction, a lifting mechanism (30) is provided at the bottom of the conveying mechanism (20) directly below the filling station (11), a three-axis transverse movement module for adjusting the position of the tank body (70) is provided in the lifting mechanism (30), a floating mechanism (40) with an internal soft connection is installed on the frame structure (10) directly above the filling station (11), the top of the floating mechanism (40) is connected to an external material box, and a valve opening mechanism (50) is connected to the side of the floating mechanism (40) close to the top flange of the tank body (70), and a visual inspection module (60) is installed on the side of the top of the frame structure (10) close to the tank body (70).

2. A ton-filling powder packaging machine according to claim 1, characterized in that: The floating mechanism (40) includes a mounting plate fixed to the top of the frame structure (10), a movable plate is provided below the mounting plate, a hole is opened in the center of the mounting plate and a first bellows (41) is provided, a movable plate is connected below the first bellows (41), a second bellows (42) is connected to the bottom of the movable plate through a ball valve (45), a feed pipe (46) is installed at the bottom of the second bellows (42), a bottom plate fixedly connected to the movable plate through a guide rod is installed at the bottom of the feed pipe (46), a positioning mechanism (47) is installed below the bottom plate, and two sets of positioning mechanisms (47) are installed in a staggered manner between the positioning mechanisms (47). For the distance measuring sensor (49), a servo motor-driven screw lifting module (44) is symmetrically installed on both sides of the first bellows (41) for adjusting the height of the positioning mechanism (47). The top of the first bellows (41) is fixedly connected to a top plate fixed above the mounting plate. A third bellows (43) is installed above the top plate to connect to the external material box. A nitrogen filling component (48) is provided along the conveying direction of the conveying pipe (46). An elastic support seat (461) connected to the bottom plate is provided on the outer wall of the conveying pipe (46), and one side of the elastic support seat (461) is connected to the valve opening mechanism (50).

3. A ton-filling powder packaging machine according to claim 2, characterized in that: The positioning mechanism (47) is composed of at least three groups of pressure wheel assemblies circumferentially distributed on the periphery of the conveying pipe (46), including a bracket (471) connected to the bottom of the conveying pipe (46) and a pressure rod (473) arranged below the bracket (471), the movable end of the outer side of the pressure rod (473) is connected to the output end of the pressure cylinder (472), the top of the pressure cylinder (472) is movably connected to the top of the bracket (471), the bottom of the bracket (471) is movably connected to the central support of the pressure rod (473), and a movable guide wheel is installed on the inner side of the pressure rod (473).

4. A ton-filling powder packaging machine according to claim 2, characterized in that: The valve opening mechanism (50) includes a fan-shaped fixed plate (51) fixed on one side of the elastic support seat (461), a first motor (52) is installed on the top of the fan-shaped fixed plate (51), an arc-shaped slide rail (53) is provided along the arc edge of the bottom of the fan-shaped fixed plate (51), at least two sets of sliders are provided on the arc-shaped slide rail (53) to connect the alignment plate (54) below, the bottom output end of the first motor (52) is connected to the gear (521), the top of the alignment plate (54) is provided with a groove concentric with the arc-shaped slide rail (53), and an arc-shaped rack (541) meshing with the gear (521) is fixed in the groove, and the alignment plate (54) is driven by the first motor (52) to drive the gear assembly. The plate (54) rotates along the arc-shaped slide rail (53), and a linear slide rail (55) is installed at the bottom of the alignment plate (54) and is radially arranged relative to the feed pipe (46). The bottom of the slider corresponding to the linear slide rail (55) is connected to the valve opening positioning block (56), and the valve opening positioning block (56) is driven by the second motor (57). A pen-shaped cylinder (58) is installed on the side of the slider corresponding to the linear slide rail (55) to drive the valve opening positioning block (56) to move radially. The height of the valve opening positioning block (56) matches the position of the valve core after the feed pipe (46) and the top flange of the tank body (70) are abutted. A valve core positioning sensor (59) is installed above the valve opening positioning block (56) corresponding to the side plane of the flange.

5. A ton-filling powder packaging machine according to claim 2, characterized in that: The nitrogen charging assembly (48) comprises a nitrogen charging pipe and a nitrogen discharging pipe arranged on both sides of the feeding pipe (46), and is used for sealing detection and moisture detection before filling and secondary nitrogen charging after filling.

6. A ton-filling powder packaging machine according to claim 1, characterized in that: The lifting mechanism (30) includes a support plate (31) and a base (32) arranged on the top of the support plate (31). A slot is provided on the surface of the base (32) for positioning the positioning frame (71) outside the tank body (70). A three-axis transverse movement module is provided at the bottom of the support plate (31), including an X-axis transverse movement module (33) arranged in the same direction as the conveying direction, a Y-axis transverse movement module (34) arranged perpendicular to the X-axis transverse movement module (33), and a lifting cylinder (35) arranged at the center of the bottom of the support plate (31). The output end of the lifting cylinder (35) is connected to the bottom of the support plate (31). The bottom plate of the Y-axis lateral movement module (34) is fixedly connected to the frame structure (10), and a telescopic guide rod is provided between the support plate (31) and the plate surface installed on the top of the corresponding slider of the X-axis lateral movement module (33). The bottom of the support plate (31) on both sides of the telescopic guide rod is installed with a load-bearing bar (311) arranged parallel to the moving direction of the Y-axis lateral movement module (34). The plate surface on the top of the corresponding slider of the X-axis lateral movement module (33) is symmetrically installed with a load-bearing block (36) driven by a cylinder. The load-bearing block (36) is installed on the top of the slider corresponding to the slide rail arranged parallel to the moving direction of the X-axis lateral movement module (33).

7. A ton-filling powder packaging machine according to claim 1, characterized in that: The visual inspection module (60) includes a 3D camera (61) mounted on a frame structure (10) above the inspection station (12) and a 2D camera (62) mounted on a frame structure (10) above the filling station (11), wherein at least two groups of 2D cameras (62) are respectively located above diagonal positions of a positioning frame (71) of the tank body (70).

8. The ton-filling powder packaging machine according to claim 1, characterized in that: The conveying mechanism (20) adopts a conveying roller assembly (21). The top of the conveying roller assembly (21) is respectively installed with guide roller assemblies (22) on both sides of the filling station (11) and the inspection station (12). The spacing between the guide rollers is adjusted by a cylinder. The position of the conveying roller assembly (21) corresponding to the lifting mechanism (30) is provided with a conveying roller spacing that matches the length of the card seat (32) to facilitate the card seat (32) to pass through the conveying rollers.

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