A urea packaging automation system

Abstract

The embodiment of the present application provides a urea packaging automation system, which relates to the field of urea packaging. A urea packaging automation system includes: a conveying mechanism, an automatic closing mechanism, the automatic closing mechanism is installed at the upper left end of the conveying mechanism, a closing drive mechanism, the closing drive mechanism is installed at the left end of the conveying mechanism and is located at the lower side of the automatic closing mechanism, the closing drive mechanism can drive the automatic closing mechanism to work, a sealing mechanism, the sealing mechanism is installed at the upper middle position of the conveying mechanism; and a leakage detection mechanism, the leakage detection mechanism is installed at the upper right end of the conveying mechanism. By setting the closing drive mechanism, when the urea after filling moves to the top of the closing drive mechanism, the automatic closing mechanism can automatically clamp the upper end of the urea packaging bag, so that the upper position of the urea packaging bag fits front and back, which is convenient for sealing, avoiding manual operation by workers, and making the packaging process safer.

Description

Technical Field

[0001] The present application relates to the technical field of urea packaging, and in particular to a urea packaging automation system. Background Art

[0002] In modern agriculture and industrial production, urea is an important fertilizer and chemical raw material with huge demand. Urea, also known as carbamide, is an organic compound composed of carbon, nitrogen, oxygen and hydrogen. It is a white crystal and one of the simplest organic compounds. It is the main nitrogen-containing end product of protein metabolism and decomposition in mammals and some fish. It is also the nitrogen fertilizer with the highest nitrogen content.

[0003] After urea is processed in the prior art, it needs to be packaged in a packaging bag. After the traditional fertilizer packaging device has filled the urea, a person needs to operate the bag mouth of the packaging bag closely to align and close it, so as to facilitate the sealing of the bag mouth of the packaging bag. This packaging method is very dangerous during operation and workers are prone to injury during operation. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a urea packaging automation system, which can automatically clamp the upper end of the urea packaging bag by setting a closing drive mechanism when the filled urea moves above the closing drive mechanism, so that the upper end of the urea packaging bag fits together front and back, which is convenient for sealing and avoids manual operation by workers, making the packaging process safer.

[0005] According to an embodiment of the present application, a urea packaging automation system includes:

[0006] Transmission mechanism;

[0007] An automatic closing mechanism, which is installed at the upper left end of the conveying mechanism;

[0008] A closing drive mechanism, which is installed at the left end of the conveying mechanism and is located at the lower side of the automatic closing mechanism, and can drive the automatic closing mechanism to work;

[0009] A sealing mechanism, which is installed in the middle position above the conveying mechanism;

[0010] The air leakage detection mechanism is installed at the upper right end of the conveying mechanism.

[0011] According to some embodiments of the present application, the conveying mechanism includes a support frame, a support side plate, a transmission roller and a conveying belt. The support frame is provided with two and is symmetrically arranged left and right. A support side plate is symmetrically installed front and back between the two support frames. A transmission roller is symmetrically installed left and right between the front and rear support side plates. A conveying belt is installed for transmission between the two transmission rollers. A driving motor is installed at the right end of the rear support side plate, and the output end of the driving motor is connected to the transmission roller at the right end. A rectangular through groove is opened at the left end of the support side plate.

[0012] According to some embodiments of the present application, the closing drive mechanism includes an upper rectangular box, a lower rectangular plate and a connecting plate, the lower surface of the upper rectangular box is symmetrically equipped with a connecting plate, the lower ends of the two connecting plates are commonly connected to the lower rectangular plate, a first rotating roller is evenly rotated between the front and rear side walls of the upper rectangular box, L-shaped plates are installed on the front and rear side walls of the lower rectangular plate, the upper side plate of the L-shaped plate is movably clamped in the rectangular through groove, a first spring is installed between the upper side plate of the L-shaped plate and the lower side wall of the rectangular through groove, a roller is rotatably installed between the two L-shaped plates, and the lower side of the conveyor belt is arranged around the upper side of the roller.

[0013] According to some embodiments of the present application, a rotating support rod is fixedly installed on the left and right sides of the upper rectangular box between the front and rear support side plates, and a support roller is rotatably sleeved on the rotating support rod. A support plate is fixedly installed on the left side of the left support roller on the upper side of the two support side plates, and the support plate is arranged along the inner tangent direction of the left transmission roller and the left support roller.

[0014] According to some embodiments of the present application, the automatic closing mechanism includes a C-shaped rod, a rotating sleeve, a driving plate, a support arm and a closing plate. The C-shaped rod is provided with two and is respectively installed on the inner walls of two supporting side plates. A rotating sleeve is rotatably sleeved on the C-shaped rod. The driving plate and the support arm are fixedly installed on the side walls of the rotating sleeve in sequence. The driving plate and the support arm are set at an angle of 90 degrees, and the closing plate is fixedly installed on the upper end of the support arm.

[0015] According to some embodiments of the present application, a driving hole extending from left to right is opened on the driving plate, and a C-shaped driving rod is arranged through the driving hole, and both ends of the C-shaped driving rod are fixedly mounted on the lower side wall of the upper rectangular box.

[0016] According to some embodiments of the present application, the sealing mechanism includes a first support frame, a packaging bag sealing machine, a bending rod and a guide plate. The first support frame is fixedly installed at the middle position of the outer walls of the two supporting side plates, the packaging bag sealing machine is fixedly installed on the upper end of the first support frame, and a bending rod is symmetrically installed on the left side wall of the upper end of the first support frame, and a guide plate is fixedly installed on the end of the bending rod.

[0017] According to some embodiments of the present application, the air leakage detection mechanism includes a second support frame, a pressing assembly, a connecting plate, a pressing plate and a balancing assembly. The second support frame is fixedly installed at the right end position of the outer wall of the two supporting side plates, the pressing assembly is fixedly installed on the lower side of the upper end of the second support frame, the connecting plate is fixedly installed on the lower end of the pressing assembly, the lower side of the connecting plate is connected to the pressing plate, and the balancing assembly is installed on the right side of the pressing assembly.

[0018] According to some embodiments of the present application, the pressing assembly includes a horizontal plate, a rectangular guide cylinder, a guide rod, a fixed plate and a second spring, the horizontal plate is fixedly installed on the lower side wall of the upper end of the second support frame, and rectangular guide cylinders are fixedly installed on the lower surfaces of both ends of the horizontal plate respectively, and a guide rod is movably sleeved in the rectangular guide cylinder, and the lower end of the guide rod is fixedly connected to the connecting plate, a fixing plate is fixedly installed between the lower end side walls of the two rectangular guide cylinders, and a second spring is installed between the lower surface of the fixing plate and the connecting plate, the front side surface of the rectangular guide cylinder is provided with a strip opening, and the side walls of the guide rod are evenly provided with meshing teeth at the positions corresponding to the strip openings, sliding rods are penetrated at the left and right ends of the fixing plate, and a movable plate is commonly installed on the upper ends of the left and right sliding rods, and the lower end of the sliding rod is fixedly connected to the connecting plate, and a displacement detection probe is fixedly installed on the upper top of the movable plate, and a displacement sensor used in conjunction with the displacement detection probe is on the rear side wall of the second support frame.

[0019] According to some embodiments of the present application, the balancing assembly includes an L-shaped bent plate, a bearing, a rotating rod and a gear. The L-shaped bent plate is provided with two and is symmetrically installed on the lower side of the fixed plate. A through hole is opened at the lower end of the L-shaped bent plate, and a bearing is installed in the through hole. A rotating rod is commonly installed in the left and right bearings. Gears are fixedly installed at both ends of the rotating rod, and the gears are meshed with meshing teeth on the guide rod.

[0020] According to some embodiments of the present application, an inkjet printer is installed in the middle position of the rear side wall of the second support frame, and a control box is fixedly installed on the front side of the front support side plate. The inkjet printer, displacement detection probe and displacement sensor are all electrically connected to the control box.

[0021] According to some embodiments of the present application, a telescopic airbag is fixedly installed between the movable plate and the fixed plate, the telescopic airbag is provided with an air inlet and an air outlet, and both the air inlet and the air outlet are installed with a one-way valve, the air outlet of the telescopic airbag is connected to an air supply pipe, the end of the air supply pipe is fixedly connected to a nozzle, and the nozzle is fixedly installed on the upper right end of the rear supporting side plate.

[0022] The beneficial effects of the present application are as follows: first, by setting a closing drive mechanism, when the urea after filling moves to the top of the closing drive mechanism, the automatic closing mechanism can automatically clamp the upper end of the urea packaging bag, so that the upper opening position of the urea packaging bag fits together front and back, which is convenient for sealing and avoids manual operation by workers, making the packaging process safer; second, the air leakage detection mechanism can be used to detect air leakage of the sealed bagged urea, so as to select the bagged urea with air leakage, so as to avoid the quality and effect of urea being affected by air leakage, so as to ensure the purity, quality and safety of urea; third, the work of the inkjet printer is controlled by the air leakage detection result of the air leakage detection mechanism, so that the qualified packaging bag can be sprayed with information accurately, and after the packaging bag is leaked, fourth, the information sprayed on the packaging bag can be air-dried by the telescopic airbag, air pipe and nozzle arranged on the air leakage detection mechanism, so as to accelerate the drying speed of the sprayed information.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic diagram of the three-dimensional structure of a urea packaging automation system according to an embodiment of the present application;

[0026] Figure 2 is a schematic diagram of the three-dimensional structure of a transmission mechanism according to an embodiment of the present application;

[0027] Figure 3 According to the embodiment of the present application Figure 1 A schematic diagram of the enlarged three-dimensional structure in the middle;

[0028] Figure 4 is a schematic diagram of the installation structure of the automatic closing mechanism according to an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of the connection between the automatic closing mechanism and the closing drive mechanism according to an embodiment of the present application;

[0030] Figure 6 is a schematic diagram of the three-dimensional structure of the closing drive mechanism according to an embodiment of the present application;

[0031] Figure 7 is a first three-dimensional structural schematic diagram of an air leakage detection mechanism according to an embodiment of the present application;

[0032] Figure 8 is a second three-dimensional structural schematic diagram of the air leakage detection mechanism according to an embodiment of the present application;

[0033] Fig. 9 is a schematic diagram of the three-dimensional structure of a pressing assembly according to an embodiment of the present application;

[0034] Fig.10 is a schematic diagram of the three-dimensional structure of a balancing assembly according to an embodiment of the present application;

[0035] Fig.11 It is a schematic diagram of the installation structure of the inkjet printer and the nozzle according to the embodiment of the present application.

[0036] Icons: 1. Conveying mechanism; 11. Support frame; 12. Support side plate; 13. Drive roller; 14. Conveying belt; 15. Rectangular through slot; 16. Rotating support rod; 17. Support roller; 18. Drive motor; 19. Support plate; 2. Closing drive mechanism; 21. Upper rectangular box; 22. Lower rectangular plate; 23. Connecting plate; 24. Support roller; 25. First rotating roller; 26. L-shaped plate; 27. First spring; 3. Automatic closing mechanism; 31. Rotating sleeve; 32. C-shaped rod; 33. Drive plate; 34. Support arm; 35. Closing plate; 36. C-shaped drive rod; 4. Sealing mechanism; 41. First supporting frame; 42. Packaging bag Sealing machine; 43. bending rod; 44. guide plate; 5. leakage detection mechanism; 51. second support frame; 52. pressing assembly; 521. rectangular guide cylinder; 522. guide rod; 5221. meshing teeth; 523. fixed plate; 524. telescopic airbag; 525. movable plate; 526. slide rod; 527. second spring; 528. horizontal plate; 53. connecting plate; 54. pressing plate; 55. balancing assembly; 551. L-shaped bending plate; 552. bearing; 553. rotating rod; 554. gear; 56. displacement detection probe; 57. displacement sensor; 6. inkjet printer; 7. control box; 8. nozzle; 9. gas pipe. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0038] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] A urea packaging automation system according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0040] See also Figures 1 to 11 According to an embodiment of the present application, a urea packaging automation system includes:

[0041] Transmission mechanism 1;

[0042] An automatic closing mechanism 3, which is installed at the upper left end of the conveying mechanism 1;

[0043] The closing drive mechanism 2 is installed at the left end of the conveying mechanism 1 and is located at the lower side of the automatic closing mechanism 3. The closing drive mechanism 2 can drive the automatic closing mechanism 3 to work;

[0044] The sealing mechanism 4 is installed in the middle position above the conveying mechanism 1;

[0045] The air leakage detection mechanism 5 is installed at the upper right end of the conveying mechanism 1 .

[0046] In this embodiment, by providing a closing drive mechanism 2, when the filled urea moves above the closing drive mechanism 2, the automatic closing mechanism 3 can automatically clamp the upper end of the urea packaging bag, so that the upper opening of the urea packaging bag fits together front and back, which is convenient for sealing and avoids manual operation by workers. The packaging process is safer. The air leakage detection mechanism 5 can detect air leakage of the sealed bagged urea, so as to select the bagged urea with packaging leakage, so as to avoid the quality and effect of urea being affected by packaging leakage.

[0047] See also Figure 2The conveying mechanism 1 includes a support frame 11, a support side plate 12, a transmission roller 13 and a transmission belt 14. The support frame 11 is provided with two and is symmetrically arranged left and right. The support side plate 12 is symmetrically installed between the two support frames 11, and the transmission roller 13 is symmetrically installed left and right between the front and rear support side plates 12. The transmission belt 14 is installed between the two transmission rollers 13. A driving motor 18 is installed at the right end of the rear support side plate 12, and the output end of the driving motor 18 is connected to the transmission roller 13 at the right end. A rectangular through groove 15 is opened at the left end of the support side plate 12, and the transmission roller 13 at the right end can be driven to rotate by the driving motor 18, so that the entire conveying mechanism 1 is in operation, and the driving motor 18 is electrically connected to the control box 7, and the rotation of the driving motor 18 can be controlled by the control box 7.

[0048] See also Figure 4-6 The closing driving mechanism 2 comprises an upper rectangular box 21, a lower rectangular plate 22 and a connecting plate 23. The lower surface of the upper rectangular box 21 is symmetrically provided with a connecting plate 23. The lower ends of the two connecting plates 23 are connected to the lower rectangular plate 22. A first rotating roller 25 is evenly rotatably installed between the front and rear side walls of the upper rectangular box 21. L-shaped plates 26 are installed on the front and rear side walls of the lower rectangular plate 22. The upper side plate of the L-shaped plate 26 is movably clamped in the rectangular through groove 15. A first spring 27 is installed between the upper side plate of the L-shaped plate 26 and the lower side wall of the rectangular through groove 15. A roller 24 is rotatably installed between the two L-shaped plates 26. The lower side of the conveyor belt 14 is arranged around the upper side surface of the roller 24. When the closing driving mechanism 2 does not move downward, the roller 24 can lift the lower side of the conveyor belt 14 upward, so that the lower side of the conveyor belt 14 bulges upward, so that the conveyor belt 14 is in a taut state. When the urea moves to the top of the closing drive mechanism 2, the entire closing drive mechanism 2 moves downward under the action of the gravity of the urea. At this time, the upper side of the conveyor belt 14 corresponds to the position of the closing drive mechanism 2 and is concave downward. The roller 24 moves downward with the closing drive mechanism 2, and the lower side of the conveyor belt 14 tends to be horizontal, compensating for the concave on the upper side of the conveyor belt 14 to ensure that the conveyor belt 14 is still in a taut state, ensuring that the conveyor belt 14 is always in contact with the two transmission rollers 13 and there is a large friction force. The first spring 27 is squeezed and contracted. When the urea moves away from the top of the closing drive mechanism 2, the closing drive mechanism 2 can be moved upward under the action of the rebound force of the first spring 27. When the closing drive mechanism 2 moves downward, it can drive the automatic closing mechanism 3 to rotate toward the middle to gather the middle of the upper opening of the packaging bag. When the closing drive mechanism 2 moves upward, it can drive the automatic closing mechanism 3 to rotate to both sides.

[0049] A rotating support rod 16 is fixedly installed on the left and right sides of the upper rectangular box 21 between the front and rear supporting side plates 12, and a supporting roller 17 is rotatably sleeved on the rotating support rod 16. By arranging the supporting rollers 17 on both sides of the upper and lower rectangular boxes 21, a supporting plate 19 is fixedly installed on the left side of the left supporting roller 17 on the upper side of the two supporting side plates 12. The supporting plate 19 is arranged along the inner tangent direction of the left transmission roller 13 and the left supporting roller 17. By arranging the supporting plate 19, it can be ensured that when the bagged urea moves on the left side of the closing drive mechanism 2, the conveyor belt 14 will not be pressed down, and it can be ensured that the closing drive mechanism 2 moves downward only when the urea bag moves to just above it.

[0050] See also Figure 4-5 The automatic closing mechanism 3 includes a C-shaped rod 32, a rotating sleeve 31, a driving plate 33, a support arm 34 and a closing plate 35. Two C-shaped rods 32 are provided and are respectively installed on the inner side walls of the two supporting side plates 12. A rotating sleeve 31 is rotatably sleeved on the C-shaped rod 32. The driving plate 33 and the support arm 34 are fixedly installed on the side wall of the rotating sleeve 31 in sequence. The driving plate 33 and the support arm 34 are arranged at an angle of 90 degrees. The closing plate 35 is fixedly installed on the upper end of the support arm 34. A driving hole that passes through the left and right is opened on the driving plate 33, and a C-shaped driving rod 36 is arranged in the driving hole. The C-shaped driving rod 36 The two ends are fixedly mounted on the lower side wall of the upper rectangular box 21. Since the C-shaped driving rod 36 can move with the upper rectangular box 21, when the upper rectangular box 21 moves downward, the driving plate 33 will be driven to rotate downward under the action of the C-shaped driving rod 36, so that the closing plate 35 at the upper end of the support arm 34 rotates toward the middle to gather the bag opening of the packaging bag. When the upper rectangular box 21 moves to the lowermost end, the front and rear closing plates 35 stop rotating. There is a distance of two centimeters between the two closing plates 35, which can gather the bag opening of the packaging bag without affecting the conveyor belt 14 to drive the packaging bag forward.

[0051] See also Figure 3 The sealing mechanism 4 includes a first support frame 41, a packaging bag sealer 42, a bending rod 43 and a guide plate 44. The first support frame 41 is fixedly installed in the middle position of the outer side walls of the two supporting side plates 12. The packaging bag sealer 42 is fixedly installed on the upper end of the first support frame 41. The bending rod 43 is symmetrically installed on the left side wall of the upper end of the first support frame 41. The end of the bending rod 43 is fixedly installed with a guide plate 44. Through the front and rear guide plates 44, the bag openings of the gathered packaging bags can be further fitted together. The fitted packaging bags follow the conveyor belt 14 to move toward the packaging bag sealer 42. After the packaging bags pass through the packaging bag sealer 42, the bag openings can be sealed.

[0052] See also Figure 7-10The air leakage detection mechanism 5 includes a second support frame 51, a pressing component 52, a connecting plate 53, a pressing plate 54 and a balancing component 55. The second support frame 51 is fixedly installed on the right end position of the outer wall of the two supporting side plates 12. The pressing component 52 is fixedly installed on the lower side of the upper end of the second support frame 51, and the connecting plate 53 is fixedly installed on the lower end of the pressing component 52. The lower side of the connecting plate 53 is connected to the pressing plate 54, and the balancing component 55 is installed on the right side of the pressing component 52.

[0053] The pressing assembly 52 includes a horizontal plate 528, a rectangular guide cylinder 521, a guide rod 522, a fixing plate 523 and a second spring 527. The horizontal plate 528 is fixedly mounted on the lower side wall of the upper end of the second support frame 51. The lower surfaces of both ends of the horizontal plate 528 are respectively fixedly mounted with rectangular guide cylinders 521. The guide rod 522 is movably sleeved in the rectangular guide cylinder 521. The lower end of the guide rod 522 is fixedly connected to the connecting plate 53. A fixing plate 523 is fixedly mounted between the lower side walls of the two rectangular guide cylinders 521. The lower surface of the fixing plate 523 is connected to the connecting plate 53. A second spring 527 is installed between them, a strip opening is opened on the front side of the rectangular guide cylinder 521, and meshing teeth 5221 are evenly arranged at the position corresponding to the strip opening on the side wall of the guide rod 522, and sliding rods 526 are penetrated at the left and right ends of the fixed plate 523, and a movable plate 525 is commonly installed on the upper ends of the left and right sliding rods 526, and the lower ends of the sliding rods 526 are fixedly connected to the connecting flat plate 53, and a displacement detection probe 56 is fixedly installed on the upper top of the movable plate 525, and a displacement sensor 57 used in conjunction with the displacement detection probe 56 is provided on the rear side wall of the second support frame 51.

[0054] The packaged bagged urea continues to move to the right following the conveyor belt 14. When the upper end of the bagged urea contacts the lower surface of the pressing plate 54, as the urea continues to move to the right, the pressing plate 54 will move upward and squeeze the second spring 527. When the bagged urea is completely located below the pressing plate 54, the conveying mechanism 1 stops moving. At this time, the displacement sensor 57 detects the displacement detection probe 56. If the bagged urea is not leaking, the pressing plate 54 will remain stable. When it is detected that the displacement detection probe 56 no longer moves, it is determined that the bagged urea is not leaking. If the bagged urea is leaking, the pressing plate 54 will gradually move downward under the rebound force of the second spring 527. When it is detected that the displacement detection probe 56 moves slowly downward, it is determined that the bagged urea is leaking.

[0055] The balancing component 55 includes an L-shaped bent plate 551, a bearing 552, a rotating rod 553 and a gear 554. The L-shaped bent plate 551 is provided with two and is symmetrically installed on the lower side of the fixed plate 523. A through hole is opened at the lower end of the L-shaped bent plate 551, and a bearing 552 is installed in the through hole. The rotating rod 553 is commonly installed in the left and right bearings 552. Gears 554 are respectively fixedly installed at both ends of the rotating rod 553. The gear 554 is meshed with the meshing teeth 5221 on the guide rod 522. By arranging the balancing component 55 on the front side of the pressing component 52, the moving distance of the pressing component 52 can be balanced left and right when it moves up and down, so that the guide rods 522 at the left and right ends can move up and down synchronously, avoiding the asynchronous movement of the guide rods 522 at the left and right ends, resulting in the pressing plate 54 tilting left and right, affecting the normal detection of the leakage detection mechanism 5.

[0056] An inkjet printer 6 is installed in the middle position of the rear side wall of the second support frame 51, and a control box 7 is fixedly installed on the front side of the front support side plate 12. The inkjet printer 6, the displacement detection probe 56 and the displacement sensor 57 are all electrically connected to the control box 7. When the displacement detection probe 56 and the displacement sensor 57 transmit the detection signal to the control box 7, when it is determined that the bagged urea is not leaking, the control box 7 can control the inkjet printer 6 to work, and the inkjet printer 6 can print the production date and the qualified inspection information on the surface of the packaging bag.

[0057] See also Fig.11 A telescopic airbag 524 is fixedly installed between the movable plate 525 and the fixed plate 523. The telescopic airbag 524 is provided with an air inlet and an air outlet, and a one-way valve is installed on the air inlet and the air outlet. The air outlet of the telescopic airbag 524 is connected to an air supply pipe 9, and the end of the air supply pipe 9 is fixedly connected to a nozzle 8, and the nozzle 8 is fixedly installed on the upper right end of the rear supporting side plate 12. The telescopic airbag 524 can be telescoped and stretched together with the movable plate 525. When the pressing plate 54 moves upward, the movable plate 525 will drive the telescopic airbag The upper end of 524 moves upward together, and the telescopic airbag 524 is stretched at this time, and the telescopic airbag 524 is filled with gas. When the bagged urea is removed from under the pressing plate 54, the pressing plate 54 moves downward under the action of the second spring 527. At this time, the movable plate 525 can squeeze the telescopic airbag 524. At this time, the gas inside the telescopic airbag 524 can be transported to the nozzle 8 through the air supply pipe 9. The gas is sprayed to the inkjet information on the surface of the packaging bag through the nozzle 8, so that the inkjet information can be air-dried and the drying of the inkjet information can be accelerated.

[0058] This embodiment can detect air leakage of the packaged bagged urea by setting up the air leakage detection mechanism 5, so as to prevent the quality and effect of urea from being affected by air leakage, so as to ensure the purity, quality and safety of urea, and control the operation of the inkjet printer 6 by the air leakage detection result of the air leakage detection mechanism 5, so as to accurately spray information on the qualified packaging bags. After the packaging bags are leak-tested, the information sprayed on the packaging bags can be air-dried by the telescopic airbag 524, air pipe 9 and nozzle 8 arranged thereon, so as to accelerate the drying speed of the sprayed information.

[0059] Specifically, the working principle of the urea packaging automation system is as follows: when in use, the filled urea packaging bag is placed at the left end of the conveying mechanism 1, and the driving motor 18 is turned on to make the conveying mechanism 1 run. When the filled urea moves to the top of the closing driving mechanism 2, the entire closing driving mechanism 2 moves downward under the gravity of the urea, and the first spring 27 is squeezed and contracted. The upper rectangular box 21 drives the C-shaped driving rod 36 to move downward, and the driving plate 33 is driven to rotate downward under the action of the C-shaped driving rod 36, so that the closing plate 35 at the upper end of the support arm 34 rotates toward the middle, and the bag mouth of the packaging bag is gathered. The gathered bagged urea continues to move to the right and passes through the front and rear guide plates 44, so that the bag mouth of the packaging bag is further fitted. The fitted packaging bag follows the conveyor belt 14 to move toward the direction of the packaging bag sealing machine 42. After the packaging bag passes through the packaging bag sealing machine 42, the bag mouth can be sealed.

[0060] The packaged bagged urea continues to move to the right following the conveyor belt 14. When the upper end of the bagged urea contacts the lower surface of the pressing plate 54, as the urea continues to move to the right, the pressing plate 54 will move upward and squeeze the second spring 527. When the bagged urea is completely located below the pressing plate 54, the control box 7 controls the conveying mechanism 1 to stop moving. At this time, the displacement sensor 57 detects the displacement detection probe 56. If the bagged urea is not leaking, the pressing plate 54 will remain stable. When it is detected that the displacement detection probe 56 no longer moves, it is determined that the bagged urea is not leaking. If the bagged urea is leaking, the pressing plate 54 will gradually move downward under the rebound force of the second spring 527. When it is detected that the displacement detection probe 56 moves slowly downward, it is determined that the bagged urea is leaking. When it is determined that the bagged urea is not leaking, the control box 7 can control the inkjet printer 6 to work, and the inkjet printer 6 can print the production date and qualified inspection information on the surface of the packaging bag.

[0061] During the inspection of bagged urea, the telescopic airbag 524 can be retracted and stretched together with the movable plate 525. The telescopic airbag 524 is filled with gas. When the bagged urea is moved away from under the pressing plate 54, the pressing plate 54 moves downward under the action of the second spring 527. At this time, the movable plate 525 can squeeze the telescopic airbag 524. At this time, the gas inside the telescopic airbag 524 can be transported to the nozzle 8 through the gas pipe 9. The gas is sprayed to the inkjet information on the surface of the packaging bag through the nozzle 8, so that the inkjet information can be air-dried and the drying of the inkjet information can be accelerated.

[0062] It should be noted that the specific models and specifications of the drive motor 18, displacement detection probe 56, displacement sensor 57, inkjet printer 6 and control box 7 need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated on.

[0063] The power supply and principles of the driving motor 18, the displacement detection probe 56, the displacement sensor 57, the inkjet printer 6 and the control box 7 are clear to those skilled in the art and will not be described in detail herein.

[0064] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A urea packaging automation system, characterized in that: include: Transmission mechanism (1); An automatic closing mechanism (3), the automatic closing mechanism (3) being installed at the upper left end of the conveying mechanism (1); A closing drive mechanism (2), the closing drive mechanism (2) being installed at the left end of the conveying mechanism (1) and located at the lower side of the automatic closing mechanism (3), and the closing drive mechanism (2) can drive the automatic closing mechanism (3) to work; A sealing mechanism (4), the sealing mechanism (4) being installed at a middle position above the conveying mechanism (1); An air leakage detection mechanism (5), the air leakage detection mechanism (5) being installed at the upper right end of the conveying mechanism (1); The transmission mechanism (1) comprises a support frame (11), a support side plate (12), a transmission roller (13) and a transmission belt (14); the support frame (11) is provided with two and is symmetrically arranged left and right; a support side plate (12) is symmetrically installed between the two support frames (11); a transmission roller (13) is symmetrically installed left and right between the two front and rear support side plates (12); a transmission belt (14) is installed between the two transmission rollers (13); a drive motor (18) is installed at the right end of the rear support side plate (12); an output end of the drive motor (18) is connected to the transmission roller (13) at the right end; and a rectangular through slot (15) is opened at the left end of the support side plate (12); The closing drive mechanism (2) comprises an upper rectangular box (21), a lower rectangular plate (22) and a connecting plate (23); the connecting plate (23) is symmetrically installed on the lower surface of the upper rectangular box (21); the lower ends of the two connecting plates (23) are commonly connected to the lower rectangular plate (22); a first rotating roller (25) is evenly rotatably installed between the front and rear side walls of the upper rectangular box (21); L-shaped plates (26) are installed on the front and rear side walls of the lower rectangular plate (22); the upper side plate of the L-shaped plate (26) is movably clamped in the rectangular through groove (15); a first spring (27) is installed between the upper side plate of the L-shaped plate (26) and the lower side wall of the rectangular through groove (15); a roller (24) is rotatably installed between the two L-shaped plates (26); the lower side of the conveyor belt (14) is arranged to bypass the upper side of the roller (24); A rotating support rod (16) is fixedly mounted on the left and right sides of the upper rectangular box (21) between the front and rear support side plates (12), and a support roller (17) is rotatably sleeved on the rotating support rod (16). A support plate (19) is fixedly mounted on the upper left ends of the front and rear support side plates (12), and the support plate (19) is arranged along the tangent direction between the left transmission roller (13) and the left support roller (17); The automatic closing mechanism (3) comprises a C-shaped rod (32), a rotating sleeve (31), a driving plate (33), a support arm (34) and a closing plate (35); two C-shaped rods (32) are provided and are respectively mounted on the inner side walls of two supporting side plates (12); a rotating sleeve (31) is rotatably sleeved on the C-shaped rod (32); a driving plate (33) and a support arm (34) are fixedly mounted on the side wall of the rotating sleeve (31) in sequence; the driving plate (33) and the support arm (34) are arranged at an angle of 90 degrees; and a closing plate (35) is fixedly mounted on the upper end of the support arm (34); The air leakage detection mechanism (5) comprises a second support frame (51), a pressing assembly (52), a connecting plate (53), a pressing plate (54) and a balancing assembly (55); the second support frame (51) is fixedly mounted at the right end of the outer side walls of the two supporting side plates (12); the pressing assembly (52) is fixedly mounted on the lower side of the upper end of the second support frame (51); the connecting plate (53) is fixedly mounted on the lower end of the pressing assembly (52); the lower side of the connecting plate (53) is connected to the pressing plate (54); and the balancing assembly (55) is mounted on the right side of the pressing assembly (52); The balancing assembly (55) comprises an L-shaped bent plate (551), a bearing (552), a rotating rod (553) and a gear (554); the L-shaped bent plate (551) is provided with two and symmetrically mounted on the lower side of the fixed plate (523); a through hole is provided at the lower end of the L-shaped bent plate (551), and a bearing (552) is mounted in the through hole; a rotating rod (553) is mounted in the left and right bearings (552); gears (554) are fixedly mounted at both ends of the rotating rod (553); and the gears (554) are meshedly connected with meshing teeth (5221) on the guide rod (522).

2. A urea packaging automation system according to claim 1, characterized in that: The drive plate (33) is provided with a drive hole extending therethrough, and a C-shaped drive rod (36) is provided in the drive hole. Both ends of the C-shaped drive rod (36) are fixedly mounted on the lower side wall of the upper rectangular box (21).

3. The urea packaging automation system according to claim 1, characterized in that: The sealing mechanism (4) comprises a first support frame (41), a packaging bag sealing machine (42), a bending rod (43) and a guide plate (44); the first support frame (41) is fixedly mounted at the middle position of the outer side walls of the two support side plates (12); the packaging bag sealing machine (42) is fixedly mounted on the upper end of the first support frame (41); the bending rod (43) is symmetrically mounted on the left side wall of the upper end of the first support frame (41); and the guide plate (44) is fixedly mounted on the end of the bending rod (43).

4. The urea packaging automation system according to claim 1, characterized in that: The pressing assembly (52) comprises a transverse plate (528), a rectangular guide cylinder (521), a guide rod (522), a fixing plate (523) and a second spring (527); the transverse plate (528) is fixedly mounted on the lower side wall of the upper end of the second support frame (51); rectangular guide cylinders (521) are fixedly mounted on the lower surfaces of both ends of the transverse plate (528); a guide rod (522) is movably sleeved inside the rectangular guide cylinder (521); the lower end of the guide rod (522) is fixedly connected to the connecting plate (53); a fixing plate (523) is fixedly mounted between the lower side walls of the two rectangular guide cylinders (521); the lower surface of the fixing plate (523) is in contact with the connecting plate (53); A second spring (527) is installed between the two connecting plates (53), a strip opening is opened on the front side of the rectangular guide cylinder (521), meshing teeth (5221) are evenly arranged at the position corresponding to the strip opening on the side wall of the guide rod (522), sliding rods (526) are penetrated at the left and right ends of the fixed plate (523), and a movable plate (525) is installed on the upper ends of the left and right sliding rods (526), ​​the lower ends of the sliding rods (526) are fixedly connected to the connecting plate (53), and a displacement detection probe (56) is fixedly installed on the upper top of the movable plate (525), and a displacement sensor (57) used in conjunction with the displacement detection probe (56) is provided on the rear side wall of the second support frame (51).

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