Self-locking structure of automatic hopper cover taking device

Abstract

The invention relates to the technical field of pharmacy, in particular to a self-locking structure of an automatic hopper cover taking device. The self-locking structure comprises a stand column, the top of the stand column is movably connected with a control mechanism, the bottom of the outer wall of the control mechanism is fixedly connected with a positioning frame, and a limiting mechanism is arranged on the inner side of the positioning frame; a transverse plate is fixedly connected to the top of the supporting vertical rod, the positioning frame comprises a positioning frame body, and a hopper cover fixing assembly is fixedly connected to the bottom of the inner side of the positioning frame body. Compared with the prior art, not only is the working efficiency greatly improved, but also the safety and the stability of operation are ensured, and particularly, on the aspect of stability guarantee after the hopper cover is lifted, through the double clamping design of the arc-shaped clamping plates and the semicircular clamping plates, the hopper cover is effectively prevented from falling off due to air pressure control errors or other external factors.

Description

Technical Field

[0001] The present invention relates to the field of pharmaceutical technology, and more specifically, to a self-locking structure of an automatic hopper lid taking device. Background Art

[0002] During the production process of solid pharmaceuticals, the hopper is one of the key equipment, and its cleaning and maintenance work is particularly important. However, due to the relatively narrow internal space of the cleaning equipment, the existing robotic arm technology is difficult to reach deep into the equipment, so the hopper lid cannot be effectively removed. This leads to a problem: before the hopper is sent into the cleaning machine for thorough cleaning, the staff must manually disassemble the hopper lid first. This process not only takes time and effort, but also increases the complexity of the operation and potential safety risks. Therefore, in order to ensure that the inside of the hopper can be thoroughly cleaned, the disassembled hopper lid must be placed at the designated station of the cleaning machine for subsequent cleaning work.

[0003] According to the patent document: CN105081359A, an automatic loading and unloading device for a motor end cover numerical control lathe is disclosed. The automatic loading and unloading device for the motor end cover numerical control lathe includes a feeding device, a gripper feeding device, and a top finished product cylinder; the feeding device includes a frame, a discharging mechanism, and a hopper mechanism. The discharging mechanism includes a discharging plate, a ball screw pair, and a discharging motor; the hopper mechanism includes a hopper cylinder, a hopper plate, a first hopper, and a second hopper; the starting position of the discharging plate in the discharging mechanism is arranged at the bottom of the first hopper in the hopper mechanism; the gripper feeding device includes a frame, a gripper mechanism, and a feeding mechanism. The feeding mechanism includes a feeding plate, a feeding cylinder, an adjusting feeding cylinder, and an adjusting feeding cylinder fixing plate; the gripper mechanism includes a gripper moving plate, a gripper rotating motor, a gripper, and a gripper cylinder. Using this device can replace manual labor to complete the actions of circulating to take the finished motor end cover and place the blank motor end cover on the numerical control lathe.

[0004] The cleaning process of the hopper involves feeding the hopper from one side of the cleaning machine and then removing it from the other side of the cleaning machine to ensure that the hopper can be continuously cleaned. During this process, the hopper lid must be removed on the hopper input side of the cleaning machine, then moved to the hopper output side of the cleaning machine and re-fastened to the hopper there. Currently, the actions of removing and fastening the hopper lid completely rely on manual operation, which not only limits the automation level of the hopper cleaning process but also leads to a reduction in the cleaning speed. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a self-locking structure of an automatic hopper lid taking device. The technical problem to be solved by the present invention is that the actions of removing and fastening the hopper lid completely rely on manual operation, which not only limits the automation level of the hopper cleaning process but also leads to a reduction in the cleaning speed.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0007] A self-locking structure of a hopper automatic lid-taking device, including a column, the top of the column is movably connected with a control mechanism, the bottom of the outer wall of the control mechanism is fixedly connected with a positioning frame, and a limiting mechanism is arranged inside the positioning frame;

[0008] The column includes a supporting vertical rod, and the top of the supporting vertical rod is fixedly connected with a cross plate;

[0009] The positioning frame includes a positioning frame main body, and a hopper lid fixing component is fixedly connected to the bottom inside the positioning frame main body;

[0010] The positioning frame main body includes two frame rods, both sides of the front sides of the two frame rods are fixedly connected with chute pipe connecting rods, the front sides of the two chute pipe connecting rods are fixedly connected with chute pipes, and the middle parts of the inner sides of the two frame rods are fixedly connected with connecting rods.

[0011] As a further solution of the present invention: The control mechanism includes a horizontal slider, the bottom of the horizontal slider is slidably connected to the top of the cross plate, the front side of the horizontal slider is fixedly connected with a horizontal guiding vertical rod, the rear side of the horizontal guiding vertical rod is fixedly connected with a pneumatic control plate, guiding grooves are opened on the left and right sides of the front side of the horizontal guiding vertical rod, a guiding rod connecting block is fixedly connected to the top of the middle part of the front side of the horizontal guiding vertical rod, and a sliding rod guiding rod is fixedly connected to the inner wall of the front side of the guiding rod connecting block.

[0012] As a further solution of the present invention: The top of the horizontal guiding vertical rod is fixedly connected with a double-shaft motor, conical teeth are fixedly connected to the output ends on the left and right sides of the double-shaft motor, the outer walls of the two conical teeth are both meshed with second conical teeth, lead screws are fixedly connected to the bottoms of the two second conical teeth, the bottom ends of the two lead screws both extend to the inner walls of the two guiding grooves and are rotatably connected to the bottoms of the inner walls of the two guiding grooves, transmission blocks are threadedly connected to the outer walls of the two lead screws, a lifting plate is fixedly connected to the front side of the two transmission blocks, a suction cup rod is fixedly connected to the inner wall of the front side of the lifting plate, the outer wall of the top of the suction cup rod is slidably connected to the inner wall of the sliding rod guiding rod, a pipeline is fixedly connected to the top end of the suction cup rod, the end of the pipeline far away from the suction cup rod is fixedly connected to the rear side of the pneumatic control plate, and a suction cup is fixedly connected to the bottom end of the suction cup rod.

[0013] As a further solution of the present invention: Two connecting cross bars are fixedly connected to the front sides of the inner sides of the two connecting rods, a hydraulic push rod connecting plate is fixedly connected to the inner sides of the left and right groups of connecting cross bars, a hydraulic push rod is fixedly connected to the top of the hydraulic push rod connecting plate, and a push-pull vertical plate is fixedly connected to the rear end of the hydraulic push rod.

[0014] As a further solution of the present invention: at the top of the rear sides of the inner sides of the two support rods, a guiding cross plate is fixedly connected, and a through groove is provided in the middle of the guiding cross plate.

[0015] As a further solution of the present invention: the hopper cover fixing assembly includes a bottom plate, the left and right sides of the bottom plate are respectively fixedly connected to the bottoms of the rear sides of the inner sides of the two support rods, the left and right sides of the top of the bottom plate are respectively fixedly connected with L-shaped expansion and contraction rod sliding groove rods, and the rear side of the middle of the top of the bottom plate is fixedly connected with a rear sliding groove rod.

[0016] As a further solution of the present invention: inclined L-shaped expansion and contraction rods are slidably connected to the inner walls of the two L-shaped expansion and contraction rod sliding groove rods. The left inclined L-shaped expansion and contraction rod is higher than the right inclined L-shaped expansion and contraction rod. Rack teeth are fixedly connected to the inner sides of the two inclined L-shaped expansion and contraction rods. Arc-shaped clamping plate connecting blocks are fixedly connected to the front sides of the two inclined L-shaped expansion and contraction rods. Arc-shaped clamping plates are fixedly connected to the inner sides of the two arc-shaped clamping plate connecting blocks.

[0017] As a further solution of the present invention: rack teeth are rotatably connected to both sides of the top of the bottom plate inside the two L-shaped expansion and contraction rod sliding groove rods. The outer walls of the two rack teeth are engaged with the two rack teeth. A two-way rack rod connecting rod is slidably connected to the inner wall of the rear sliding groove rod. A two-way rack rod is fixedly connected to the front side of the two-way rack rod connecting rod. The two sides of the two-way rack rod are engaged with the two gears. The rear side of the two-way rack rod connecting rod is fixedly connected to the bottom of the front side of the push-pull vertical plate.

[0018] As a further solution of the present invention: the limiting mechanism includes two hinge blocks. The outer sides of the two hinge blocks are respectively fixedly connected to the front sides of the inner sides of the two support rods. V-shaped rotating rods are rotatably connected to the outer sides of the two hinge blocks. V-shaped rotating rod connecting rods are fixedly connected to the front and rear sides of the outer sides of the two V-shaped rotating rods. Expansion and contraction plates are fixedly connected to the inner sides of the two V-shaped rotating rod connecting rods at the rear side. The inner sides of the two expansion and contraction plates are inclined cutting surfaces. A triangular abutting plate is movably connected to the inner sides of the two expansion and contraction plates. The two sides of the triangular abutting plate are attached to the inner sides of the two expansion and contraction plates. A triangular abutting plate push rod is fixedly connected to the rear side of the triangular abutting plate. The outer wall of the triangular abutting plate push rod is slidably connected to the inner wall of the through groove provided in the guiding cross plate. The rear side of the triangular abutting plate push rod is fixedly connected to the top of the front side of the push-pull vertical plate.

[0019] As a further solution of the present invention: semi-circular clamping plates are rotatably connected to the inner sides of the two V-shaped rotating rod connecting rods at the front side. The inner sides of the two semi-circular clamping plates are aligned with the middle part of the outer side of the suction cup. Inverted L-shaped sliding rods are fixedly connected to the mutually remote sides of the middle parts of the tops of the two semi-circular clamping plates. The outer walls of the two inverted L-shaped sliding rods are respectively slidably connected to the inner walls of the two sliding groove tubes.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. By providing a column, a control mechanism, a positioning frame and a limiting mechanism, the present invention realizes the automatic lid taking, lifting and clamping processes of the hopper lid, which not only greatly improves the work efficiency, but also ensures the safety and stability of the operation. Especially in terms of ensuring the stability after the hopper lid is lifted, through the double clamping design of the arc-shaped clamping plate and the semi-circular clamping plate, the present invention effectively avoids the problems of the hopper lid falling off or shaking caused by air pressure control errors or other external factors, and also avoids the shaking of the suction cup rod due to uneven force or external factors after the suction cup lifts and moves the hopper lid, further improving the stability and safety of the hopper lid during the transfer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic three-dimensional structure diagram of the main body of the present invention;

[0023] Figure 2 is a schematic three-dimensional separated structure diagram of the main body of the present invention;

[0024] Figure 3 is a schematic three-dimensional structure diagram of the column and the control mechanism of the present invention;

[0025] Figure 4 is a schematic three-dimensional separated structure diagram of the column and the control mechanism of the present invention;

[0026] Figure 5 is a schematic three-dimensional structure diagram of the positioning frame and the limiting mechanism of the present invention;

[0027] Figure 6 is a schematic three-dimensional separated structure diagram of the positioning frame and the limiting mechanism of the present invention;

[0028] Figure 7 is a schematic three-dimensional separated structure diagram of the positioning frame of the present invention;

[0029] Figure 8 is a schematic three-dimensional structure diagram of the main body of the positioning frame of the present invention;

[0030] Figure 9 is a schematic three-dimensional structure diagram of the hopper lid fixing assembly of the present invention;

[0031] Figure 10 is a schematic three-dimensional structure diagram of the limiting mechanism of the present invention.

[0032] In the figure: 1. Column; 11. Support vertical rod; 12. Horizontal plate; 2. Control mechanism; 21. Horizontal slider; 22. Horizontal guiding vertical rod; 23. Pneumatic control plate; 24. Guiding groove; 25. Guide rod connecting block; 26. Slide rod guiding rod; 27. Biaxial motor; 28. Tapered tooth; 29. Second tapered tooth; 210. Lead screw; 211. Transmission block; 212. Lifting plate; 213. Suction cup rod; 214. Suction cup; 215. Pipe; 3. Positioning frame; 31. Positioning frame main body; 311. Frame rod; 312. Chute pipe connecting rod; 313. Chute pipe; 314. Connecting rod; 315. Connecting cross bar; 316. Hydraulic push rod connecting plate; 317. Hydraulic push rod; 318. Guiding horizontal plate; 319. Through groove; 3110. Push and pull vertical plate; 32. Hopper cover fixing assembly; 321. Bottom plate; 322. L-shaped expansion and contraction rod chute rod; 323. Rear chute rod; 324. Gear; 325. Inclined L-shaped expansion and contraction rod; 326. Rack; 327. Bidirectional rack rod connecting rod; 328. Bidirectional rack rod; 329. Arc-shaped clamping plate connecting block; 3210. Arc-shaped clamping plate; 4. Limiting mechanism; 41. Hinge block; 42. V-shaped rotating rod; 43. V-shaped rotating rod connecting rod; 44. Expansion and contraction plate; 45. Triangular abutting plate; 46. Triangular abutting plate push rod; 47. Semi-circular clamping plate; 48. Inverted L-shaped slide rod. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figure 1-2 shown, the present invention provides a self-locking structure of a hopper automatic cover taking device, including a column 1. The top of the column 1 is movably connected with a control mechanism 2. The bottom of the outer wall of the control mechanism 2 is fixedly connected with a positioning frame 3. A limiting mechanism 4 is arranged inside the positioning frame 3.

[0035] As Figure 2-10As shown in the figure, the column 1 includes a supporting vertical rod 11. A cross plate 12 is fixedly connected to the top of the supporting vertical rod 11. The control mechanism 2 includes a horizontal slider 21. The bottom of the horizontal slider 21 is slidably connected to the top of the cross plate 12. A horizontal guiding vertical rod 22 is fixedly connected to the front side of the horizontal slider 21. An air pressure control plate 23 is fixedly connected to the rear side of the horizontal guiding vertical rod 22. Guide grooves 24 are provided on both the left and right sides of the front side of the horizontal guiding vertical rod 22. A guide rod connecting block 25 is fixedly connected to the top of the middle part of the front side of the horizontal guiding vertical rod 22. A sliding rod guiding rod 26 is fixedly connected to the inner wall of the front side of the guide rod connecting block 25. A double-shaft motor 27 is fixedly connected to the top of the horizontal guiding vertical rod 22. Conical teeth 28 are fixedly connected to the output ends on both the left and right sides of the double-shaft motor 27. The outer walls of the two conical teeth 28 are both engaged with second conical teeth 29. Screw rods 210 are fixedly connected to the bottoms of the two second conical teeth 29. The bottom ends of the two screw rods 210 both extend to the inner walls of the two guide grooves 24 and are rotatably connected to the bottoms of the inner walls of the two guide grooves 24. Transmission blocks 211 are threadedly connected to the outer walls of the two screw rods 210. A lifting plate 212 is fixedly connected to the front side of the two transmission blocks 211. A suction cup rod 213 is fixedly connected to the inner wall of the front side of the lifting plate 212. The top of the outer wall of the suction cup rod 213 is slidably connected to the inner wall of the sliding rod guiding rod 26. A pipeline 215 is fixedly connected to the top end of the suction cup rod 213. One end of the pipeline 215 away from the suction cup rod 213 is fixedly connected to the rear side of the air pressure control plate 23. A suction cup 214 is fixedly connected to the bottom end of the suction cup rod 213. The positioning frame 3 includes a positioning frame main body 31. A hopper cover fixing assembly 32 is fixedly connected to the inner bottom of the positioning frame main body 31. The positioning frame main body 31 includes two frame rods 311. Chute pipe connecting rods 312 are fixedly connected to both the left and right sides of the front side of the two frame rods 311. Chute pipes 313 are fixedly connected to the front sides of the two chute pipe connecting rods 312. Connecting rods 314 are fixedly connected to the middle parts of the inner sides of the two frame rods 311. Two connecting cross bars 315 are fixedly connected to the front sides of the inner sides of the two connecting rods 314. A hydraulic push rod connecting plate 316 is fixedly connected to the inner sides of the left and right groups of connecting cross bars 315. A hydraulic push rod 317 is fixedly connected to the top of the hydraulic push rod connecting plate 316. A push-pull vertical plate 3110 is fixedly connected to the rear end of the hydraulic push rod 317. A guiding cross plate 318 is fixedly connected to the top of the inner rear sides of the two frame rods 311. A through groove 319 is provided in the middle of the guiding cross plate 318. The hopper cover fixing assembly 32 includes a bottom plate 321. The left and right sides of the bottom plate 321 are respectively fixedly connected to the bottoms of the inner rear sides of the two frame rods 311. L-shaped expansion and contraction rod chute rods 322 are respectively fixedly connected to the left and right sides of the top of the bottom plate 321. A rear chute rod 323 is fixedly connected to the rear side of the middle part of the top of the bottom plate 321. Inclined L-shaped expansion and contraction rods 325 are slidably connected to the inner walls of the two L-shaped expansion and contraction rod chute rods 322. The left inclined L-shaped expansion and contraction rod 325 is higher than the right inclined L-shaped expansion and contraction rod 325. Rack bars 326 are fixedly connected to the inner sides of the two inclined L-shaped expansion and contraction rods 325.On the front sides of both of the two inclined L-shaped expansion and contraction rods 325, there are fixedly connected arc-shaped clamping plate connecting blocks 329. On the inner sides of both of the two arc-shaped clamping plate connecting blocks 329, there are fixedly connected arc-shaped clamping plates 3210. On both sides of the top of the bottom plate 321 inside the two L-shaped expansion and contraction rod chute rods 322, there are rotatably connected racks 326. The outer walls of the two racks 326 are meshed with the two racks 326. Inside the inner wall of the rear chute rod 323, there is a sliding connection with a bidirectional rack rod connecting rod 327. On the front side of the bidirectional rack rod connecting rod 327, there is fixedly connected a bidirectional rack rod 328. Both sides of the bidirectional rack rod 328 are meshed with the two gears 324. On the rear side of the bidirectional rack rod connecting rod 327, there is a fixed connection at the bottom of the front side of the push-pull vertical plate 3110. The limiting mechanism 4 includes two hinge blocks 41. The outer sides of the two hinge blocks 41 are respectively fixedly connected to the front sides inside the two support rods 311. On the outer sides of the two hinge blocks 41, there are rotatably connected V-shaped rotating rods 42. On the front and rear sides of the outer sides of the two V-shaped rotating rods 42, there are fixedly connected V-shaped rotating rod connecting rods 43. On the inner sides of the two rear V-shaped rotating rod connecting rods 43, there are fixedly connected expansion and contraction plates 44. The inner sides of the two expansion and contraction plates 44 are inclined planes. Inside the inner sides of the two expansion and contraction plates 44, there is a movable connection with a triangular abutting plate 45. Both sides of the triangular abutting plate 45 are in contact with the inner sides of the two expansion and contraction plates 44. On the rear side of the triangular abutting plate 45, there is fixedly connected a triangular abutting plate push rod 46. The outer wall of the triangular abutting plate push rod 46 is slidably connected to the inner wall of the through groove 319 opened in the guiding horizontal plate 318. On the rear side of the triangular abutting plate push rod 46, there is a fixed connection at the top of the front side of the push-pull vertical plate 3110. On the inner sides of the two front V-shaped rotating rod connecting rods 43, there are rotatably connected semi-circular clamping plates 47. The inner sides of the two semi-circular clamping plates 47 are aligned with the middle part of the outer side of the suction cup 214. On the mutually distant sides in the middle of the tops of the two semi-circular clamping plates 47, there are fixedly connected inverted L-shaped sliding rods 48. The outer walls of the two inverted L-shaped sliding rods 48 are respectively slidably connected to the inner walls of the two chute tubes 313;

[0036] When it is necessary to remove the hopper cover, first, the control mechanism 2 is integrally moved to a suitable position by horizontally moving the horizontal slider 21 on the top of the horizontal plate 12. After that, the double-shaft motor 27 is started. Through the meshing action of the two output ends with the conical teeth 28 and the second conical teeth 29, the two lead screws 210 are driven to rotate synchronously. Since the lead screws 210 are threadedly connected to the transmission blocks 211, as the lead screws 210 rotate, the transmission blocks 211 perform lifting movements on the lead screws 210, thereby driving the lifting plate 212 and the suction cup rod 213 and the suction cup 214 thereon to lift synchronously. When the lifting plate 212 descends to an appropriate position, the suction cup 214 is in close contact with the hopper cover, and the air pressure in the pipeline 215 is controlled by the air pressure control plate 23, so that the suction cup 214 firmly adsorbs the hopper cover. After the suction cup 214 adsorbs the hopper cover, at this time, the double-shaft motor 27 is started in the opposite direction to lift the hopper cover with the suction cup 214. When the suction cup 214 rises to the original position, at this time, the double-shaft motor 27 stops starting;

[0037] After that, the hydraulic push rod 317 is activated. The hydraulic push rod 317 pulls the push-pull vertical plate 3110 to move forward. During the movement of the push-pull vertical plate 3110, the two-way rack rod 328 is driven to move forward through the two-way rack rod connecting rod 327. During the movement of the two-way rack rod 328, the two gears 324 are rotated and the two racks 326 are engaged through meshing with the two gears 324, so that the two inclined L-shaped expansion and contraction rods 325 move forward to the front side. During the movement of the two inclined L-shaped expansion and contraction rods 325, the arc-shaped clamping plate 3210 is driven to move inward through the arc-shaped clamping plate connecting block 329. The two arc-shaped clamping plates 3210 clamp the hopper cover during the movement, thus ensuring the stability of the hopper cover after it is lifted, and avoiding accidental detachment of the hopper cover caused by errors in the air pressure control plate 23. At the same time, during the movement of the push-pull vertical plate 3110, the triangular abutment plate 45 is also driven to move forward through the triangular abutment plate push rod 46. During the movement of the triangular abutment plate 45, the inner sides of the two expansion and contraction plates 44 are pushed. At this time, the two V-shaped rotating rods 42 drive the semi-circular clamping plate 47 to rotate inward through the V-shaped rotating rod connecting rod 43. The two semi-circular clamping plates 47 clamp the middle part of the outer side of the suction cup rod 213 during the rotation process, thereby limiting the suction cup rod 213, and avoiding shaking of the suction cup rod 213 due to uneven force or external factors after the suction cup 214 is lifted and moves the hopper cover, further improving the stability and safety of the hopper cover during the transfer process.

[0038] Working principle of the present invention: The control mechanism 2 is integrally moved to a suitable position by the lateral movement of the lateral slider 21 on the top of the cross plate 12. Then, the dual-axis motor 27 is started. Through the meshing action of the two output ends with the conical gear 28 and the second conical gear 29, the two lead screws 210 are driven to rotate synchronously. Since the lead screws 210 are threadedly connected to the transmission blocks 211, with the rotation of the lead screws 210, the transmission blocks 211 perform lifting movements on the lead screws 210, thereby driving the lifting plate 212 and the suction cup rods 213 and suction cups 214 thereon to lift synchronously. When the lifting plate 212 descends to an appropriate position, the suction cup 214 is in close contact with the hopper cover, and the air pressure in the pipeline 215 is controlled by the air pressure control plate 23, so that the suction cup 214 firmly adsorbs the hopper cover. After the suction cup 214 adsorbs the hopper cover, the dual-axis motor 27 is started in the opposite direction to lift the hopper cover with the suction cup 214. When the suction cup 214 rises to the original position, the dual-axis motor 27 stops starting at this time. Then, the hydraulic push rod 317 is started, and the hydraulic push rod 317 pulls the push-pull vertical plate 3110 to move forward. During the movement of the push-pull vertical plate 3110, the bidirectional rack rod 328 is driven to move forward through the bidirectional rack rod connecting rod 327. During the movement of the bidirectional rack rod 328, the two gears 324 are rotated through meshing with the two gears 324, and the two racks 326 are engaged to move the two inclined L-shaped expansion and contraction rods 325 forward. During the movement of the two inclined L-shaped expansion and contraction rods 325, the arc-shaped clamping plate 3210 is driven to move inward through the arc-shaped clamping plate connecting block 329. During the movement of the two arc-shaped clamping plates 3210, the hopper cover is clamped. At the same time, during the movement of the push-pull vertical plate 3110, the triangular abutment plate 45 is also driven to move forward through the triangular abutment plate push rod 46. During the movement of the triangular abutment plate 45, the inner sides of the two expansion and contraction plates 44 are pushed. At this time, the two V-shaped rotating rods 42 drive the semi-circular clamping plates 47 to rotate inward through the V-shaped rotating rod connecting rod 43. During the rotation of the two semi-circular clamping plates 47, the middle part of the outer side of the suction cup rod 213 is clamped, thereby limiting the suction cup rod 213.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-locking structure of an automatic cover-taking device for a hopper, characterized in that: It includes a vertical column (1), the top of the vertical column (1) is movably connected with a control mechanism (2), the bottom of the outer wall of the control mechanism (2) is fixedly connected with a positioning frame (3), and a limiting mechanism (4) is arranged inside the positioning frame (3); The vertical column (1) includes a supporting vertical rod (11), and the top of the supporting vertical rod (11) is fixedly connected with a cross plate (12); The positioning frame (3) includes a positioning frame main body (31), and a hopper cover fixing component (32) is fixedly connected to the inner bottom of the positioning frame main body (31); The positioning frame main body (31) includes two frame rods (311), both sides of the front sides of the two frame rods (311) are fixedly connected with chute pipe connecting rods (312), the front sides of the two chute pipe connecting rods (312) are fixedly connected with chute pipes (313), and the middle parts of the inner sides of the two frame rods (311) are fixedly connected with connecting rods (314).

2. The self-locking structure of a hopper automatic lid-taking device according to claim 1, characterized in that: The control mechanism (2) includes a horizontal slider (21), the bottom of the horizontal slider (21) is slidably connected to the top of the cross plate (12), the front side of the horizontal slider (21) is fixedly connected with a horizontal guiding vertical rod (22), the rear side of the horizontal guiding vertical rod (22) is fixedly connected with a pneumatic control plate (23), guiding grooves (24) are opened on the left and right sides of the front side of the horizontal guiding vertical rod (22), a guiding rod connecting block (25) is fixedly connected to the top of the middle part of the front side of the horizontal guiding vertical rod (22), and a sliding rod guiding rod (26) is fixedly connected to the inner wall of the front side of the guiding rod connecting block (25).

3. The self-locking structure of a hopper automatic lid-taking device according to claim 2, characterized in that: The top of the horizontal guiding vertical rod (22) is fixedly connected with a dual-axis motor (27), conical teeth (28) are fixedly connected to the output ends on the left and right sides of the dual-axis motor (27), the outer walls of the two conical teeth (28) are both engaged with second conical teeth (29), screw rods (210) are fixedly connected to the bottoms of the two second conical teeth (29), the bottom ends of the two screw rods (210) both extend to the inner walls of the two guiding grooves (24) and are rotatably connected to the bottoms of the inner walls of the two guiding grooves (24), transmission blocks (211) are threadedly connected to the outer walls of the two screw rods (210), a lifting plate (212) is fixedly connected to the front side of the two transmission blocks (211), a suction cup rod (213) is fixedly connected to the inner wall of the front side of the lifting plate (212), the top of the outer wall of the suction cup rod (213) is slidably connected to the inner wall of the sliding rod guiding rod (26), a pipeline (215) is fixedly connected to the top end of the suction cup rod (213), the end of the pipeline (215) far from the suction cup rod (213) is fixedly connected to the rear side of the pneumatic control plate (23), and a suction cup (214) is fixedly connected to the bottom end of the suction cup rod (213).

4. The self-locking structure of a hopper automatic lid-taking device according to claim 1, characterized in that: On the front sides of the inner sides of the two connecting rods (314), two connecting cross bars (315) are fixedly connected respectively. On the inner sides of the left and right groups of the connecting cross bars (315), a hydraulic push rod connecting plate (316) is fixedly connected. On the top of the hydraulic push rod connecting plate (316), a hydraulic push rod (317) is fixedly connected. At the rear end of the hydraulic push rod (317), a push-pull vertical plate (3110) is fixedly connected.

5. The self-locking structure of a hopper automatic lid-taking device according to claim 4, characterized in that: On the top of the rear side of the inner sides of the two support rods (311), a guiding cross plate (318) is fixedly connected. A through groove (319) is formed in the middle of the guiding cross plate (318).

6. The self-locking structure of a hopper automatic lid-taking device according to claim 1, characterized in that: The hopper cover fixing assembly (32) includes a bottom plate (321). The left and right sides of the bottom plate (321) are fixedly connected to the bottoms of the rear sides of the inner sides of the two support rods (311) respectively. On the left and right sides of the top of the bottom plate (321), L-shaped expansion and contraction rod sliding groove rods (322) are fixedly connected respectively. At the rear side of the middle of the top of the bottom plate (321), a rear sliding groove rod (323) is fixedly connected.

7. The self-locking structure of a hopper automatic lid-taking device according to claim 6, characterized in that: The inner walls of the two L-shaped expansion and contraction rod sliding groove rods (322) are both slidably connected with inclined L-shaped expansion and contraction rods (325). The left inclined L-shaped expansion and contraction rod (325) is higher than the right inclined L-shaped expansion and contraction rod (325). On the inner sides of the two inclined L-shaped expansion and contraction rods (325), racks (326) are fixedly connected respectively. On the front sides of the two inclined L-shaped expansion and contraction rods (325), arc-shaped clamping plate connecting blocks (329) are fixedly connected respectively. On the inner sides of the two arc-shaped clamping plate connecting blocks (329), arc-shaped clamping plates (3210) are fixedly connected respectively.

8. The self-locking structure of a hopper automatic lid-taking device according to claim 6, characterized in that: On the top of the bottom plate (321), on both sides inside the two L-shaped expansion and contraction rod sliding groove rods (322), racks (326) are rotatably connected. The outer walls of the two racks (326) are meshed with the two racks (326). The inner wall of the rear sliding groove rod (323) is slidably connected with a bidirectional rack rod connecting rod (327). On the front side of the bidirectional rack rod connecting rod (327), a bidirectional rack rod (328) is fixedly connected. Both sides of the bidirectional rack rod (328) are meshed with the two gears (324). On the rear side of the bidirectional rack rod connecting rod (327), it is fixedly connected to the front bottom of the push-pull vertical plate (3110).

9. The self-locking structure of a hopper automatic lid-taking device according to claim 1, characterized in that: The limiting mechanism (4) includes two hinge blocks (41), the outer sides of the two hinge blocks (41) are respectively fixedly connected to the front sides of the inner sides of the two support rods (311), V-shaped rotating rods (42) are rotatably connected to the outer sides of the two hinge blocks (41), V-shaped rotating rod connecting rods (43) are fixedly connected to the front and rear sides of the outer sides of the two V-shaped rotating rods (42), expansion and contraction plates (44) are fixedly connected to the inner sides of the two V-shaped rotating rod connecting rods (43) at the rear side, the inner sides of the two expansion and contraction plates (44) are inclined cutting surfaces, triangular pressing plates (45) are movably connected to the inner sides of the two expansion and contraction plates (44), both sides of the triangular pressing plate (45) are attached to the inner sides of the two expansion and contraction plates (44), a triangular pressing plate push rod (46) is fixedly connected to the rear side of the triangular pressing plate (45), the outer wall of the triangular pressing plate push rod (46) is slidably connected to the inner wall of the through groove (319) formed in the guiding transverse plate (318), and the rear side of the triangular pressing plate push rod (46) is fixedly connected to the top of the front side of the push-pull vertical plate (3110).

10. The self-locking structure of a hopper automatic lid-taking device according to claim 9, characterized in that: Semicircular clamping plates (47) are rotatably connected to the inner sides of the two V-shaped rotating rod connecting rods (43) at the front side, the inner sides of the two semicircular clamping plates (47) are aligned with the middle part of the outer side of the suction cup (214), inverted L-shaped sliding rods (48) are fixedly connected to the mutually remote sides of the middle parts of the tops of the two semicircular clamping plates (47), and the outer walls of the two inverted L-shaped sliding rods (48) are respectively slidably connected to the inner walls of the two chute pipes (313).

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