Fertilizer packaging device with automatic switching function

Abstract

The invention provides a fertilizer packaging device with an automatic switching function, and relates to the technical field of fertilizer packaging, the fertilizer packaging device comprises a gearbox, the top of the gearbox is rotatably provided with a control shaft, and a servo motor is arranged outside the gearbox and is in transmission connection with the control shaft; a three-blade switcher is fixedly arranged outside the control shaft; three groups of regulation and control frames are fixedly arranged outside the three-blade switcher at equal intervals; a frame structure is arranged above the regulation and control frame, guide pipes are slidably arranged on the inner walls of the two sides above the regulation and control frame, mounting plates are fixedly arranged outside the adjacent ends of the guide pipes on the two sides, and the ends of the guide pipes penetrate through the mounting plates and are fixedly provided with suction cups; according to the device, by means of a core driving structure composed of a servo motor and a three-blade switcher, the five working procedures of packaging bag conveying and cutting, bag opening expanding, quantitative fertilizer feeding, bag opening heat sealing and finished product discharging are integrated, automatic switching of stations of a regulation and control frame is achieved through 120-degree staggered surrounding layout, connection of all the working procedures does not need to be manually intervened, and continuous batch packaging is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fertilizer packaging, in particular to a fertilizer packaging device with automatic switching function. BACKGROUND

[0002] After the production of granular fertilizer, a sealed bag is needed for sealing and packaging. Generally, a heat sealing machine is used to seal the packaging bag. Different equipment is used to open the packaging bag and then input the fertilizer. Finally, the bag is sealed. Manual transfer is needed in the middle to perform each step.

[0003] The packaging device currently used adopts a manual transfer mode, which affects work efficiency. There is a lack of a packaging function that can integrally switch and perform each packaging step, which is not conducive to rapid and continuous automatic processing. SUMMARY

[0004] Therefore, the present application provides a fertilizer packaging device with automatic switching function in view of the deficiencies in the prior art.

[0005] The present application provides a fertilizer packaging device with automatic switching function, which specifically comprises: a gearbox, a control shaft is rotatably arranged on the top of the gearbox, a servo motor is arranged outside the gearbox and is in transmission connection with the control shaft; a three-leaf switch is fixedly arranged outside the control shaft; three sets of regulating frames are fixedly arranged outside the three-leaf switch at equal intervals; the upper part of the regulating frame is a frame structure, guide pipes are slidably arranged on the inner walls of the upper part of the regulating frame on both sides, mounting plates are fixedly arranged outside the adjacent ends of the guide pipes on both sides, suction cups are fixedly arranged at the end portions of the guide pipes penetrating through the mounting plates; springs are sleeved on the other ends of the guide pipes and trigger seats are fixedly arranged thereon; a stand is fixedly arranged on one end of the stand, a connecting frame is fixedly arranged on the upper part of the stand, and a sealing and edge cutting device is fixedly arranged on the bottom of the connecting frame; air cylinders are fixedly arranged on both sides of the sealing and edge cutting device, and vertical plates are fixedly arranged on the extension ends of the air cylinders; a hopper is connected to a speed limiting conveying bin at the bottom, an impeller motor is fixedly arranged outside the speed limiting conveying bin, an inclined pipeline is arranged at the bottom of the speed limiting conveying bin, and a flat-shaped hopper is connected to the inclined pipeline; an electric cylinder C is fixedly arranged on the top outside of a control frame; the stand, the hopper and the control frame are arranged in a staggered ring around the control shaft at an angle of 120 degrees.

[0006] Optionally, trapezoidal blocks are integrally arranged on the upper and lower sides of the trigger seat; guide seats are fixedly arranged on both sides of the regulating frame, trigger sliding frames are slidably arranged outside the guide seats, and the end corners of the trigger sliding frames close to the trapezoidal blocks are beveled; spring rods A are fixedly arranged on the ends of the trigger sliding frames away from the trapezoidal blocks, springs are sleeved on the spring rods A, and flaps are fixedly arranged on the spring rods A penetrating through the guide seats.

[0007] Optionally, the bottom of the regulating frame is integrally provided with a bottom dragging rod; a rod passing groove is formed in the upper middle of the regulating frame; a docking device is fixedly arranged outside the regulating frame, and two groups of one-way valves are connected at both ends of the docking device; a docking hole is formed in the middle of the side of the docking device away from the regulating frame.

[0008] Optionally, a press air valve is fixedly arranged below the position of the regulating frame close to the three-leaf switch, and the trigger end of the press air valve is in a long strip structure; air pipes are arranged outside the press air valve and the one-way valve and connected to the trigger seat, and pass through the guide pipe to communicate with the suction cup.

[0009] Optionally, a conveyor is fixedly arranged at the top of the connecting frame, four groups of rotating rollers are rotatably arranged in the conveyor, and the shaft ends of the lower two groups of rotating rollers are provided with gears; a conveying motor is fixedly arranged at the top of the stand, the shaft end of the conveying motor is provided with gear transmission connection with the shaft end of the lower one group of rotating rollers, and a spiral groove is formed outside the rotating roller.

[0010] Optionally, the sealing and trimming device is in a frame shape, the vertical plates are located in the sealing and trimming device, a group of vertical plates are fixedly provided with a heat sealing strip and a cutter outside, the heat sealing strip and the cutter can be attached to another group of vertical plates; the cutter is located below the heat sealing strip.

[0011] Optionally, an electric cylinder B is fixedly arranged in the stand, a trigger plate is fixedly arranged at the telescopic end of the electric cylinder B, two groups of trigger rods are fixedly arranged outside the top of the trigger plate, and the trigger rods can contact the trigger sliding frame; a docking hole is formed outside the trigger plate, the docking hole of the docking device and the docking hole of the trigger plate can be docked, and a rubber ring is fixedly arranged outside the docking hole; an air pump is fixedly arranged outside the stand, and pipelines are arranged at both ends of the air pump to communicate with the air cylinder and the docking hole of the trigger plate.

[0012] Optionally, an impeller is rotatably arranged in the speed limiting conveying bin, and the impeller is driven by an impeller motor; the bottom of the flat-shaped hopper is higher than the mounting plate.

[0013] Optionally, a sliding block is slidably arranged above the control frame, and the telescopic end of an electric cylinder C is fixedly connected with the sliding block; two groups of penetrating sealing rods are fixedly arranged outside the sliding block, and a heat sealing block is fixedly arranged at the end of each adjacent surface of the two groups of penetrating sealing rods away from the sliding block; the two groups of penetrating sealing rods can pass through the rod passing groove.

[0014] The beneficial effects are as follows: 1. The device relies on the core driving structure composed of servo motor and three-leaf switcher, integrates five processes of packaging bag conveying and cutting, bag opening, fertilizer quantitative feeding, bag heat sealing and finished product unloading, realizes automatic switching of the control frame station through 120-degree staggered layout, and does not need manual intervention for process connection; compared with the traditional manual transfer and separate equipment operation mode, the waiting time between processes is avoided, and the actions of each station are realized by mechanical linkage to achieve precise cooperation, so that continuous batch packaging is realized, the packaging yield per unit time is effectively improved, and the device is suitable for large-scale fertilizer production scenes.

[0015] 2. The device drives the impeller to rotate by the motor in the speed-limiting conveying bin, relies on the accurate control of the fertilizer falling amount by the rotating speed of the impeller, avoids the quantity deviation caused by manual feeding; the double sealing structure of the primary sealing of the heat sealing strip and the secondary sealing of the heat sealing block is adopted, the synchronous action of the cutter and the sealing is adopted, the bag opening is fixed by the suction cup through negative pressure adsorption, compared with the manual opening mode, the opening amplitude of the bag opening can be ensured to be consistent, the fertilizer leakage caused by the bag opening deviation is avoided, and the material loss and the packaging defect rate are further reduced.

[0016] 3. The device has high adaptability at the design level, one is compatible with the cylinder type winding unsealed edge packaging bag, and no pre-treatment of the packaging bag is needed, so that the preparation process in the early stage is reduced; the second is that by adjusting the rotating speed of the impeller motor, the heat sealing temperature and other parameters, the device can be adapted to fertilizers with different particle specifications and packaging bags with different sizes, and the device parts need not be frequently replaced; at the same time, the core driving components of the device are standardized components, the structure layout is clear, and the difficulty of fault troubleshooting is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The overall arrangement schematic diagram of the embodiment in the application is shown; Figure 2 Another angle structure schematic diagram of the embodiment in the application is shown; Figure 1 Figure 3 The main structure schematic diagram of the control frame of the embodiment in the application is shown; Figure 4 The three-dimensional structure schematic diagram of the control frame of the embodiment in the application is shown; Figure 5 Another angle structure schematic diagram of the embodiment in the application is shown; Figure 4 The side view structure schematic diagram of the embodiment in the application is shown; Figure 6 Figure 4 The assembly position structure schematic diagram of the sealing and edge cutting device of the embodiment in the application is shown; Figure 7 The assembly position structure schematic diagram of the sealing and edge cutting device of the embodiment in the application is shown; Figure 8 ​​The embodiment of the present application is shown in the perspective exploded structure diagram. Figure 7 The embodiment of the present application is shown in the perspective exploded structure diagram. Figure 9 The embodiment of the present application is shown in the perspective structure diagram of the hopper. Figure 10 The embodiment of the present application is shown in the perspective structure diagram of the control frame.

[0018] List of reference signs: 1, gearbox; 101, control shaft; 102, servo motor; 103, three-leaf switch; 2, control frame; 201, guide pipe; 202, trigger seat; 203, trapezoidal block; 204, mounting plate; 205, suction cup; 206, guide seat; 207, bottom-dragging rod; 208, rod-through slot; 3, trigger sliding frame; 301, spring rod A; 4, docking device; 401, one-way valve; 5, pressurized air valve; 6, stand; 601, connecting frame; 602, conveyor; 603, rotating roller; 604, conveying motor; 7, sealing and edge cutting device; 701, air cylinder; 702, vertical plate; 703, heat sealing strip; 704, cutting knife; 8, electric cylinder B; 801, trigger plate; 802, trigger rod; 9, air pump; 10, hopper; 11, speed-limited conveying bin; 12, impeller motor; 13, flat-shaped hopper; 14, control frame; 15, electric cylinder C; 16, sliding block; 17, heat-sealing rod; 18, heat-sealing block. DETAILED DESCRIPTION

[0019] In order to make the purpose, scheme and advantages of the technical scheme of the present application more clear, the technical scheme of the embodiment of the present application will be described clearly and completely in the following with reference to the drawings of the specific embodiment of the present application.

[0020] Embodiment 1: please refer to the drawings in the specification, Figures 1 to 10 as shown: The application provides a fertilizer packaging device with an automatic switching function, which comprises a gearbox 1, a control shaft 101 rotatably arranged on the top of the gearbox 1, a servo motor 102 arranged outside the gearbox 1 and in transmission connection with the control shaft 101, a three-leaf switch 103 fixedly arranged outside the control shaft 101, three groups of regulating frames 2 fixedly arranged outside the three-leaf switch 103 at equal intervals, a frame structure arranged above the regulating frames 2, guide pipes 201 slidingly arranged on the inner walls of the two sides of the regulating frames 2, mounting plates 204 fixedly arranged outside the adjacent ends of the two guide pipes 201, suction cups 205 fixedly arranged at the ends of the guide pipes 201 and penetrating through the mounting plates 204, springs sleeved on the other ends of the guide pipes 201 and trigger seats 202 fixedly arranged at the other ends of the guide pipes 201, a stand 6, a connecting frame 601 fixedly arranged at the top of one end of the stand 6, a sealing and edge cutting device 7 fixedly arranged at the bottom of the connecting frame 601, air cylinders 701 fixedly arranged at the middle of the two sides of the sealing and edge cutting device 7, vertical plates 702 fixedly arranged at the telescopic ends of the air cylinders 701, a hopper 10, a speed-limiting conveying bin 11 connected and arranged at the bottom of the hopper 10, an impeller motor 12 fixedly arranged outside the speed-limiting conveying bin 11, an inclined pipeline connected with a flat hopper 13 arranged at the bottom of the speed-limiting conveying bin 11, a control frame 14, an electric cylinder C 15 fixedly arranged outside the top of the control frame 14, and the stand 6, the hopper 10 and the control frame 14 being arranged in a 120-degree staggered ring around the control shaft 101.

[0021] Wherein, the upper and lower sides of the trigger seat 202 are integrally provided with trapezoidal blocks 203; the two sides of the regulating frame 2 are fixedly provided with guide seats 206, the trigger sliding frames 3 are slidingly arranged outside the guide seats 206, and the end edge of the trigger sliding frame 3 close to the trapezoidal block 203 is an inclined surface; the spring rods A 301 are fixedly arranged at the end of the trigger sliding frame 3 away from the trapezoidal block 203, the spring rods A 301 are sleeved with springs and fixedly provided with flaps penetrating through the guide seats 206.

[0022] Wherein, the bottom of the regulating frame 2 is integrally provided with a bottom-dragging rod 207; a rod-penetrating groove 208 is formed in the middle of the upper part of the regulating frame 2; the outer part of the regulating frame 2 is fixedly provided with a butt joint device 4, two groups of one-way valves 401 are connected and arranged at the two ends of the butt joint device 4; a butt joint hole is formed in the middle of the side of the butt joint device 4 away from the regulating frame 2.

[0023] Wherein, the positions of the regulating frame 2 close to the three-leaf switch 103 are fixedly provided with press air valves 5 below, the trigger end of the press air valve 5 is in a strip-shaped structure; the press air valve 5 and the one-way valve 401 are provided with air pipes outside and connected to the trigger seat 202, penetrating through the guide pipe 201 and being in communication with the suction cup 205.

[0024] The top of the connecting frame 601 is fixedly provided with a conveyor 602, four groups of rotating rollers 603 are arranged in the conveyor 602, and the shaft ends of the lower two groups of rotating rollers 603 are provided with gear engagement; the top of the stand 6 is fixedly provided with a conveying motor 604, the shaft end of the conveying motor 604 is provided with gear transmission connection with the shaft end of the lower one group of rotating rollers 603, and a spiral groove is arranged outside the rotating roller 603.

[0025] The sealing and trimming device 7 is frame-shaped, the vertical plates 702 are located in the sealing and trimming device 7, a group of vertical plates 702 are fixedly provided with a heat sealing strip 703 and a cutter 704 outside, the heat sealing strip 703 and the cutter 704 can be attached to another group of vertical plates 702, and the cutter 704 is located below the heat sealing strip 703.

[0026] The electric cylinder B8 is fixedly arranged in the stand 6, the telescopic end of the electric cylinder B8 is fixedly provided with a trigger plate 801, two groups of trigger rods 802 are fixedly arranged outside and above the trigger plate 801, the trigger rods 802 can contact the trigger sliding frame 3, a butt joint hole is arranged outside the trigger plate 801, the butt joint hole of the butt joint device 4 can be butt-jointed with the butt joint hole of the trigger plate 801, and a rubber ring is fixedly arranged outside the butt joint hole; the air pump 9 is fixedly arranged outside the stand 6, and pipelines are arranged at both ends of the air pump 9 to be communicated to the air cylinder 701 and the butt joint hole of the trigger plate 801; a steel wire hose is used as an air pipe to ensure that the air pipe cannot be sucked flat during air extraction.

[0027] The inside of the speed-limiting conveying bin 11 is rotatably provided with an impeller, and the impeller is driven by an impeller motor 12; the bottom of the flat-shaped hopper 13 is higher than the mounting plate 204.

[0028] The control frame 14 is slidably provided with a sliding block 16, and the telescopic end of the electric cylinder C15 is fixedly connected with the sliding block 16; two groups of penetrating sealing rods 17 are fixedly arranged outside the sliding block 16, and a heat sealing block 18 is fixedly arranged at the end of each group of penetrating sealing rods 17, which is away from the sliding block 16; the two groups of penetrating sealing rods 17 can penetrate through the penetrating rod through slot 208.

[0029] The electric cylinder B8 is a core driving component, which moves the trigger plate 801 by pushing out, and provides initial power for subsequent bag opening attachment and opening.

[0030] The trigger plate 801, the trigger rod 802, the trigger sliding frame 3, the trapezoidal block 203 and the trigger seat 202 are a linkage assembly, after the trigger plate 801 is attached to the butt joint hole of the butt joint device 4, the trigger rod 802 pushes the trigger sliding frame 3, and then presses the trapezoidal block 203 to make the trigger seat 202 close to the regulation frame 2, and finally realizes the attachment of the two side suction cups 205 and the packaging bag.

[0031] Suction cup 205, air pump 9 is the key part of the bag mouth fixed and open, air pump 9 suction cup 205 and pipeline in the air, generate negative pressure suction force fixed bag mouth side; Subsequent reverse drive air pump 9, air cylinder 701 shrink, cooperate spring reset make bag mouth open.

[0032] Spring rod A301, guide pipe 201 is a reset component, in the reverse drive stage of air pump 9, through the spring force drive spring rod A301 and guide pipe 201 reset, auxiliary bag mouth open smoothly.

[0033] Drag bottom rod 207 is a positioning component, in the process of packaging bag roll conveying, let every time the packaging bag roll edge contact accurately, ensure the position of bag mouth stable, facilitate the subsequent suction cup 205 paste.

[0034] Conveying motor 604, rotating roller 603 is the packaging bag conveying power component, conveying motor 604 drive rotating roller 603 rotation, the lower two groups of rotating roller 603 synchronous rotation, realize the stable conveying of packaging bag roll down, control the rhythm of feeding.

[0035] Air cylinder 701, vertical plate 702, heat sealing strip 703, cutter 704 is the integrated component of sealing and cutting, air pump 9 to air cylinder 701 gas make it open, drive two groups of vertical plate 702 close, heat sealing strip 703 complete packaging bag sealing, at the same time cutter 704 cut off below the sealing, realize "sealing-cutting" synchronous operation; Subsequent reverse drive of air pump 9, air cylinder 701 shrink reset, for the next round of operation.

[0036] Servo motor 102, three blade switch 103, control frame 2 is a position switching and driving component, servo motor 102 drive three blade switch 103 and control frame 2 rotation, every time rotate one third week, accurate switching control frame 2 position (from bag mouth open position to fertilizer feeding position, and then switch to the final bag sealing position), ensure the smooth connection of each process.

[0037] Example 2: In the process of quantitative feeding of fertilizer, impeller motor 12, speed limiting conveying bin 11, impeller and flat hopper 13 are quantitative feeding components, impeller motor 12 drive the impeller in speed limiting conveying bin 11 rotation, through the impeller speed control the falling speed and quantity of fertilizer, realize quantitative feeding; Flat hopper 13 is used as a guide component, which accurately guides the fertilizer into the opened packaging bag.

[0038] Example 3: final bag sealing and related components of discharging Electric cylinder C15, sliding block 16, through sealing rod 17 and heat sealing block 18 are secondary bag sealing components, electric cylinder C15 push out sliding block 16, drive through sealing rod 17 through the through rod slot 208, heat sealing block 18 is sealed twice to the bag mouth, to ensure the sealing.

[0039] Pressing air valve 5 is a discharge control component, when the seal rod 17 continues to move, it contacts the trigger position of the pressing air valve 5, so that it is opened, external air is supplemented into the sucker 205 pipeline, the negative pressure suction force is eliminated, and the packaging bag is naturally dropped.

[0040] The conveying belt is a discharge and transfer component. The dropped finished packaging bag falls to the top of the conveying belt and is moved to the subsequent processing procedure by the conveying belt, thereby completing the end transfer of the whole packaging process.

[0041] The air pump 9 is a global pneumatic power source, which not only provides power for the opening and closing of the air cylinder 701, but also controls the generation and disappearance of the suction force of the sucker 205, is the key power support for the bag mouth fixing, sealing cutting, discharging and other links.

[0042] The specific use and role of the embodiment are as follows: in the application, the packaging bag roll is arranged in parallel on one side of the sealing and cutting device 7, and does not need to be pre-fused and sealed. As Figure 1 The conveying belt is arranged between the control box 14 and the gearbox 1. The fertilizer is poured into the hopper 10.

[0043] The working steps are as follows: The trigger plate 801 is pushed out by starting the electric cylinder B8, the trigger plate 801 is attached to the butt joint hole of the butt joint device 4, the trigger rod 802 pushes the trigger sliding frame 3 to move, the trigger sliding frame 3 presses the trapezoidal block 203, the trigger seat 202 is close to the control frame 2, and then the two side suckers 205 are attached to the packaging bag. The conveying motor 604 is started to drive the rotating roller 603 to rotate, and the two groups of rotating rollers 603 below rotate downward to convey the packaging bag roll, and the packaging bag roll is contacted to the bottom dragging rod 207 every time. The air pump 9 is started to input air into the air cylinder 701, the air cylinder 701 is expanded to push the two groups of vertical plates 702 close to each other, the packaging bag is sealed by the heat sealing strip 703, and the packaging bag is cut off below the sealing position by the cutter 704; at the same time, the air in the sucker 205 and the pipeline is extracted, the suction force is generated to fix the bag opening side of the packaging bag which has been cut off, and the one-way valve 401 keeps the negative pressure in the sucker 205. Then the air pump 9 is reversely driven to shrink the air cylinder 701 to reset, the trigger sliding frame 3 is reset by the spring outside the spring rod A301, the spring rod A301 is automatically reset by the spring outside the guide pipe 201, and the bag opening of the packaging bag is expanded. The servo motor 102 is started to drive the three-leaf switch 103 and the control frame 2 to rotate, one-third of the circle is rotated, the position is switched, the impeller motor 12 is started to drive the impeller in the speed-limiting conveying bin 11 to rotate, the fertilizer is quantitatively poured downward, and the fertilizer is poured into the packaging bag through the flat hopper 13. Then the control frame 2 is rotated by one third of a circle, and the control frame 2 is aligned with the control frame 14, and then the electric cylinder C15 is started to push out the sliding block 16, and the penetrating rod 17 continues to move through the penetrating rod through slot 208, and the bag opening is heat sealed by the heat sealing block 18; After heat sealing, the penetrating rod 17 continues to move and contacts the trigger position of the press air valve 5 to open the press air valve 5, and the external air is supplemented into the pipeline of the suction cup 205, so that the negative pressure in the suction cup 205 is released, the suction force disappears, and at this time the packaging bag falls and falls to the top of the conveying belt and is conveyed to the subsequent processing process through the conveying belt; The above steps are repeated to continuously perform automatic packaging.

Claims

1. A fertilizer packaging device with automatic switching function, comprising: Gearbox (1), the top of the gearbox (1) is rotatably provided with a control shaft (101), a servo motor (102) is provided outside the gearbox (1) and is in transmission connection with the control shaft (101); a three-leaf switch (103) is fixedly arranged outside the control shaft (101); characterized in that three sets of regulating frames (2) are fixedly arranged outside the three-leaf switch (103) at equal intervals; the upper part of the regulating frame (2) is a frame structure, guide pipes (201) are slidably arranged on the inner walls of the two sides of the upper part of the regulating frame (2), mounting plates (204) are fixedly arranged outside the adjacent ends of the two guide pipes (201), suction cups (205) are fixedly arranged at the ends of the guide pipes (201) penetrating through the mounting plates (204); the other ends of the guide pipes (201) are sleeved with springs and fixedly arranged with trigger seats (202). Stand (6), one end of the stand (6) is fixedly provided with a connecting frame (601) at the top, and a sealing and trimming device (7) is fixedly arranged at the bottom of the connecting frame (601); air cylinders (701) are fixedly arranged at the middle of the two sides of the sealing and trimming device (7), and vertical plates (702) are fixedly arranged at the telescopic ends of the air cylinders (701). Hopper (10), the bottom of the hopper (10) is connected with a speed-limiting conveying bin (11), an impeller motor (12) is fixedly arranged outside the speed-limiting conveying bin (11), and the bottom of the speed-limiting conveying bin (11) is provided with an inclined pipeline connected with a flat hopper (13). Control frame (14), the top outside of the control frame (14) is fixedly provided with an electric cylinder C (15). The stand (6), the hopper (10) and the control frame (14) are arranged in a staggered ring around the control shaft (101) at an angle of 120 degrees.

2. The fertilizer packaging apparatus having an automatic switching function according to claim 1, wherein The upper and lower sides of the trigger seat (202) are integrally provided with trapezoidal blocks (203); guide seats (206) are fixedly arranged on the two sides of the regulating frame (2), trigger sliding frames (3) are slidably arranged outside the guide seats (206), and the end edge of the trigger sliding frame (3) close to the trapezoidal block (203) is beveled; spring rods A (301) are fixedly arranged at the end of the trigger sliding frame (3) away from the trapezoidal block (203), the spring rods A (301) are sleeved with springs and fixedly arranged with flaps penetrating through the guide seats (206).

3. The fertilizer packing device having an automatic switching function according to claim 1, wherein The bottom of the regulating frame (2) is integrally provided with a bottom-dragging rod (207); a rod-penetrating groove (208) is formed in the middle upper part of the regulating frame (2); a docking device (4) is fixedly arranged outside the regulating frame (2), two sets of one-way valves (401) are connected at the two ends of the docking device (4); a docking hole is formed in the middle of the side of the docking device (4) away from the regulating frame (2).

4. The fertilizer packaging apparatus having an automatic switching function according to claim 3, wherein Pressing air valves (5) are fixedly arranged below the positions of the regulating frame (2) close to the three-leaf switch (103), the trigger end of the pressing air valve (5) is in a strip-shaped structure; the pressing air valves (5) and the one-way valves (401) are provided with air pipes outside and connected to the trigger seat (202), penetrating through the guide pipes (201) and communicated with the suction cups (205).

5. The fertilizer packaging apparatus having an automatic switching function according to claim 1, wherein The top of the connecting frame (601) is fixedly provided with a conveyor (602), four groups of rotating rollers (603) are arranged in the conveyor (602), gear engagement is arranged at the shaft end of the lower two groups of rotating rollers (603); the top of the stand (6) is fixedly provided with a conveying motor (604), the shaft end of the conveying motor (604) is in gear transmission connection with the shaft end of the lower group of rotating rollers (603), and a spiral groove is arranged outside the rotating roller (603).

6. The fertilizer packing device having an automatic switching function according to claim 1, wherein The sealing and trimming device (7) is frame-shaped, the vertical plate (702) is located in the sealing and trimming device (7), a group of vertical plates (702) are fixedly provided with a heat sealing strip (703) and a cutter (704) outside, and the heat sealing strip (703) and the cutter (704) can be attached to another group of vertical plates (702); The cutter (704) is located below the heat sealing strip (703).

7. The fertilizer packaging apparatus having an automatic switching function according to claim 1, wherein The stand (6) is fixedly provided with an electric cylinder B (8), the telescopic end of the electric cylinder B (8) is fixedly provided with a trigger plate (801), two groups of trigger rods (802) are fixedly arranged outside the top of the trigger plate (801), the trigger rods (802) can contact the trigger sliding frame (3); a butt joint hole is arranged outside the trigger plate (801), the butt joint hole of the trigger plate (801) can be butt jointed with the butt joint device (4), and a rubber ring is fixedly arranged outside the butt joint hole; the stand (6) is fixedly provided with an air pump (9), and the air pump (9) is in pipeline communication with the air cylinder (701) and the butt joint hole of the trigger plate (801) at both ends.

8. The fertilizer packaging apparatus having an automatic switching function according to claim 1, wherein The inside of the speed-limiting conveying bin (11) is rotatably provided with an impeller, and the impeller is driven by an impeller motor (12); the bottom of the flat-shaped hopper (13) is higher than the mounting plate (204).

9. The fertilizer packaging apparatus having an automatic switching function according to claim 3, wherein The upper side of the control frame (14) is slidably provided with a sliding block (16), and the telescopic end of the electric cylinder C (15) is fixedly connected with the sliding block (16); two groups of penetrating sealing rods (17) are fixedly arranged outside the sliding block (16), and a heat sealing block (18) is fixedly arranged at the end of the adjacent surface of the two groups of penetrating sealing rods (17) away from the sliding block (16); the two groups of penetrating sealing rods (17) can penetrate through the penetrating rod through slot (208).

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