A fully automatic intelligent weighing instrument

Abstract

The present invention discloses a fully automatic intelligent weighing instrument, comprising a box body, a four-axis collaborative robot arm and a hopper are arranged in the box body, the hopper is connected to the unloading unit through a unloading pipe, a high-precision weighing instrument is arranged below the unloading unit, the unloading unit is arranged on a unloading position adjustment unit, a sample tray and a sample tray for unqualified products are arranged in the box body, and the electric clamp at the end of the four-axis collaborative robot arm is connected to the mechanical claw through a moving rod and a connecting rod. Automated weighing does not require human participation, has small errors, and saves time and effort; rapid unloading is performed through the first feeding pipe, and slow unloading is performed through the second feeding pipe when approaching the target value, thereby achieving rapid and accurate unloading, high weighing accuracy, and fast weighing speed; the position of the unloading unit is adjusted by the unloading position adjustment unit, and the distance between the unloading unit and the crucible can be adjusted to ensure that all reagents fall into the crucible, reducing the influence of the impact force when the reagent falls into the crucible on the weighing result.

Description

Technical Field

[0001] The present invention belongs to the technical field of laboratory reagent weighing, and in particular relates to a fully automatic intelligent weighing instrument. Background Art

[0002] Weighing reagents and pharmaceuticals is an essential and crucial step in daily laboratory testing. With the advancement of science and technology, many laboratory tasks have become automated. However, while reagent weighing is a crucial step in the laboratory, it is still largely performed manually. This manual weighing method involves placing the crucible on a high-precision balance (one-ten-thousandth balance), setting the balance to zero, and then adding the reagent using a weighing spoon. As the target value approaches, the balance is slowed down and added incrementally, reading the balance readings at all times to determine if the sample is acceptable. If the sample is unacceptable, the reagent needs to be added or reduced. This process, which sometimes requires repeated repetition, is not only time-consuming and cumbersome, but also leads to unstable quality (especially for samples that absorb moisture).

[0003] To solve the above technical problems, those skilled in the art have designed a variety of automatic weighing devices. The most representative mechanism is: setting up a hopper to feed the material, using a vibrator to achieve uninterrupted material discharge, using a liftable and rotating turntable mechanism as a crucible conversion mechanism, and a high-precision weighing mechanism below the crucible conversion mechanism. Although the above structure can achieve the purpose of automatic weighing, it is limited by the vibration accuracy control of the vibrating feeder. The weighing accuracy can only reach ±0.0005g, and the weighing speed is also more than 80 seconds, which is slower than manual weighing. Most laboratories require a weighing accuracy of ±0.0002g and a time of less than 50 seconds.

[0004] Moreover, traditional weighing instruments have certain requirements for the size of the crucibles used when weighing samples. Not all crucibles are suitable for this. Therefore, a set of crucibles is needed to weigh the samples first, and then the weighed samples are transferred to the crucibles actually used by the user. During this transfer process, a trace amount of the weighed samples may adhere to the inner wall of the crucible, making it impossible to transfer all of them, resulting in a lower actual sample amount. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a fully automatic intelligent weighing instrument.

[0006] The present invention is implemented as follows: a fully automatic intelligent weighing instrument comprises a box body, a four-axis collaborative robotic arm is fixedly arranged inside the box body, a silo is arranged on one side of the four-axis collaborative robotic arm inside the box body for storing experimental reagents, a discharge pipe is arranged at the lower end of the silo, a discharge unit is arranged below the discharge pipe, a protective shell is arranged on the outside of the discharge unit to protect the base block, a feeding hole is opened at the upper end of the protective shell, the lower end of the discharge pipe is arranged in the feeding hole, a base block is fixedly arranged in the discharge unit, a material trough is opened at the upper end of the base block, the material trough corresponds to the position of the feeding hole, the reagent in the silo falls into the material trough on the base block in the discharge unit along the discharge pipe and the feed hole, a first motor and a second motor are arranged on one side of the base block, a first discharge hole is opened at the lower end of the base block facing away from the first motor and the second motor, and a second discharge hole is opened at the lower end of the protective shell The first material delivery pipe and the second material delivery pipe are symmetrically provided in the base block, and the first material delivery pipe and the second material delivery pipe are both connected to the material trough and the first material delivery hole. The reagent in the material trough falls into the first material delivery pipe and the second material delivery pipe. The diameter of the first material delivery pipe is larger than the diameter of the second material delivery pipe. When the crucible is filled, the material is quickly discharged through the first material delivery pipe. When the target value is approached, the material is slowly discharged through the second material delivery pipe, thereby achieving fast and accurate discharge. A first material delivery screw is provided in the first material delivery pipe, and one end of the first material delivery screw is connected to the transmission shaft of the first motor. The other end of the first material delivery screw is located above the first material delivery hole. When the first motor is started, the first material delivery screw rotates to transport the reagent in the first material delivery pipe to the first material delivery hole, and the reagent falls along the first material delivery hole and the second material delivery hole.A second feeding screw is provided in the second feeding pipe, one end of the second feeding screw is connected to the transmission shaft of the second motor, and the other end of the second feeding screw is located above the first discharge hole. When the second motor is started, the second feeding screw rotates to transport the reagent in the second feeding pipe to the first discharge hole, and the reagent falls along the first discharge hole and the second discharge hole. A high-precision weighing instrument is fixedly provided below the unloading unit in the box to accurately weigh the reagent. The center of the high-precision weighing instrument corresponds to the position of the second discharge hole, ensuring that all the reagents falling along the second discharge hole fall into the high-precision weighing instrument. The crucible placed on the measuring instrument, the unloading unit is arranged on the unloading position adjusting unit, and the position of the unloading unit is adjusted by the unloading position adjusting unit. When crucibles of different specifications and sizes are placed on the high-precision weighing instrument as needed, the distance between the unloading unit and the crucible can be adjusted, which not only ensures that all the reagents fall into the crucible, but also reduces the impact of the impact force when the reagents fall into the crucible on the weighing result. A first support plate is fixedly provided horizontally on one side of the box body, and a sample tray is provided above the first support plate to support the crucible. The sample tray is provided with a plurality of first grooves, and the first grooves are provided on the sample tray. A crucible is provided in a groove to ensure the stability of the crucible placement, a crucible detector is provided in the sample tray at the bottom of the first groove, which is convenient for the four-axis collaborative robot arm to identify the position of the qualified crucible, and a non-conforming sample tray is fixedly provided on the upper end of the first support plate for carrying the unqualified crucibles to be weighed, and a plurality of second grooves are provided on the non-conforming sample tray to ensure the stability of the crucible placement, and a non-conforming crucible detector is provided in the non-conforming sample tray at the bottom of the second groove to facilitate the four-axis collaborative robot arm to identify the position of the non-conforming crucible, and the four-axis collaborative robot arm An electric gripper is provided at the end of the electric gripper, and a moving rod is provided at the end of the electric gripper. The electric gripper provides power for the horizontal movement of the moving rod. An L-shaped connecting rod is fixed to one end of the moving rod, and a mechanical claw is fixed to the lower end of the connecting rod. The electric gripper is driven to move by the four-axis collaborative robot arm. When it moves to the designated position, the mechanical claw opens and closes through the moving rod and the connecting rod to grab the crucible. The box body is provided with a box door to ensure the sealing of the box body and prevent the reagents in the crucible from getting wet. The box body is provided with a touch screen and operation buttons for starting, resetting, pausing and other operations.

[0007] Preferably, the blanking position adjustment unit includes a horizontally arranged cross plate, and the lower end of the protective shell is fixedly connected to the cross plate, so that the cross plate and the blanking unit become a whole, so that it is convenient to adjust the position of the blanking unit through the cross plate according to actual conditions, and the two ends of the cross plate are vertically fixed with a shelf plate, and the second support plate is horizontally fixedly arranged in the box body below the cross plate, and the upper end of the second support plate is vertically and symmetrically provided with a column, and the lower end of the column is symmetrically provided with a first threaded hole, and a plurality of second threaded holes are evenly provided on the second support plate, and the positions of the first threaded hole and the second threaded hole correspond to each other, and a first bolt is provided through the first threaded hole and the second threaded hole, which not only ensures the reliable connection between the column and the second support plate, but also is convenient and quick to disassemble and assemble, and can adjust the position of the column, thereby adjusting the horizontal position of the blanking unit, and the column is vertically close to the side of the shelf plate. The cam is fixedly provided with a sliding post, and the middle position of the sliding post near the sliding post is provided with a first latching groove, and the sliding post is provided with the first latching groove, and the frame plate drives the unloading unit on the cross plate to move up and down along the sliding post. The upper end of the sliding post is horizontally fixed with a blocking block, and the middle position of the blocking block is provided with a knob above the blocking block, and the middle position of the lower end of the knob is vertically fixed with a first screw

[0008] Preferably, a first through groove is opened on both sides of the frame plate, a second screw is arranged in the first through groove, a clamping piece is fixedly arranged at one end of the second screw rod, the clamping piece is pressed against the sliding column, and a nut is sleeved on the second screw rod, and by tightening the nut, the clamping piece and the sliding column are tightly pressed together, further ensuring the stability of the frame plate position.

[0009] Preferably, a second through slot is formed on the frame plate, the inner diameter of the second through slot is larger than the inner diameter of the first through slot, and the clamping member is disposed in the second through slot.

[0010] Preferably, a plurality of groups of limit blocks are symmetrically fixedly provided on the upper end of the first support plate, and the distance between the corresponding limit blocks is the same as the width of the sample tray. The sample tray moves between the limit blocks on the first support plate, and the position of the sample tray is limited by the limit blocks to ensure the stability of the movement trajectory of the sample tray. A groove is provided on the inner wall of the limit block close to the box door to facilitate the smooth entry of the sample tray between the limit blocks. A sample tray positioning sensor is fixedly provided on the upper end of the first support plate away from the box door, and one end of the sample tray is in contact with the sample tray positioning sensor to ensure that the sample tray moves to the specified position.

[0011] Preferably, telescopic rods are symmetrically provided at the connection between the upper end of the door and the box body to facilitate the opening and closing of the door. An electromagnetic lock is fixedly provided at the upper end of the first support plate near the door. When the door is closed, the electromagnetic lock and the door are pressed against each other to ensure the reliability of the door when closed.

[0012] Preferably, handles are provided at both ends of the sample tray to facilitate transportation of the sample tray.

[0013] Preferably, a material level sensor is provided on the discharge pipe. When it is detected that there is no reagent in the discharge pipe, the material level sensor sends an alarm signal to remind the experimenter to add reagent.

[0014] Preferably, a silicone pad is fixedly provided on the mechanical claw, which can not only increase the stability of the crucible grasping, but also protect the crucible. A plurality of fifth threaded holes are provided on the connecting rod, and a sixth threaded hole is provided on the mechanical claw. The positions of the fifth threaded hole and the sixth threaded hole correspond to each other, and a second bolt is provided through the fifth threaded hole and the sixth threaded hole, so as to facilitate the adjustment of the opening of the mechanical claw according to the size of the crucible.

[0015] Preferably, carrying handrails are fixedly provided on the lower parts of both sides of the box body to facilitate the carrying of the box body, and horizontal adjustment feet are symmetrically provided at the lower end of the box body to facilitate the adjustment of the box body and ensure that the box body is in a horizontal state. A door handle is provided on the box door to facilitate opening the box door.

[0016] The beneficial effects of the present invention are as follows: the present invention has a reasonable structural design, realizes the automatic weighing of reagents, does not require human participation, has a small error, saves time and effort; when charging into the crucible, the first feeding pipe is used for rapid charging, and the second feeding pipe is used for slow charging when approaching the target value, thereby realizing rapid and accurate charging, high weighing accuracy and fast weighing speed; the charging position adjustment unit is used to adjust the position of the charging unit, and the distance between the charging unit and the crucible can be adjusted, which not only ensures that all reagents fall into the crucible, but also reduces the influence of the impact force when the reagents fall into the crucible on the weighing result; unqualified products are automatically placed on the unqualified product sample tray, which realizes partitioned placement, is convenient for experimenters to identify, and is not prone to errors; crucibles of various sizes currently in the industry can be directly grabbed, and the weighing samples do not need to be transferred twice, thereby ensuring the accuracy of the reagent amount in the crucible; the box door is closed during the weighing process to isolate the influence of the external environment, air humidity, and airflow on the weighing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 Schematic diagram of the internal structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the connection structure between the blanking unit and the column;

[0020] Figure 4 Schematic diagram of the connection structure between the column and the second support plate;

[0021] Figure 5 Schematic diagram of the top view of the base block;

[0022] Figure 6 It is a schematic diagram of the side view connection structure between the blanking unit and the base block;

[0023] Figure 7 Schematic diagram of the connection structure between the frame plate and the sliding column;

[0024] Figure 8 Schematic diagram of the top view of the connection structure between the frame plate and the sliding column;

[0025] Figure 9 Schematic diagram of the connection structure between the mobile rod and the mechanical claw;

[0026] Figure 10 Schematic diagram of the connection structure between the connecting rod and the mechanical claw;

[0027] Figure 11 Schematic diagram of the connection structure between the first support plate and the sample tray;

[0028] In the figure: 1. Box; 2. Four-axis collaborative robot arm; 3. Material silo; 4. Feed pipe; 5. Feeding unit; 6. Feeding hole; 7. Base block; 8. Material trough; 9. First motor; 10. Second motor; 11. First discharge hole; 12. Second discharge hole; 13. First feed pipe; 14. Second feed pipe; 15. First feed screw; 16. Second feed screw; 17. High-precision weighing instrument; 19. First support plate; 20. Sample tray; 21. First groove; 22. Crucible; 23. Crucible detector; 24. Rejected sample tray; 25. Second groove; 26. Rejected crucible detector; 27. Electric gripper; 28. Moving rod; 29. Connecting rod; 30. Mechanical gripper; 31. Box door; 32. Touch screen; 33. Operation button 34. Horizontal plate; 35. Shelf plate; 36. Second support plate; 37. Vertical column; 38. First threaded hole; 39. Second threaded hole; 40. First bolt; 41. Sliding column; 42. First slot; 43. Block; 44. Third threaded hole; 45. Knob; 46. First screw; 47. Fourth threaded hole; 48. First through slot; 49. Second screw; 50. Clamp; 51. Nut; 52. Second through slot; 53. Limit block; 54. Bevel; 55. Sample tray positioning sensor; 56. Telescopic rod; 57. Electromagnetic lock; 58. Pull handle; 59. Material level sensor; 60. Silicone pad; 61. Fifth threaded hole; 62. Sixth threaded hole; 63. Second bolt; 64. Carrying handrail; 65. Level adjustment foot; 66. Door handle. DETAILED DESCRIPTION

[0029] In order to more clearly understand the technical solution of the present invention, the present invention is further described below with reference to the accompanying drawings.

[0030] like Figure 1-11The fully automatic intelligent weighing instrument shown in the figure includes a box body 1, a four-axis collaborative robot arm 2 is fixedly installed in the box body 1, a silo 3 is provided on one side of the four-axis collaborative robot arm 2 in the box body 1 to store experimental reagents, a discharge pipe 4 is provided at the lower end of the silo 3, a material level sensor 59 is provided on the discharge pipe 4, when it is detected that there is no reagent in the discharge pipe 4, the material level sensor 59 sends an alarm signal to remind the experimenter to add reagents, a discharge unit 5 is provided below the discharge pipe 4, a protective shell is provided on the outside of the discharge unit 5 to protect the base block 7, a feed hole 6 is opened at the upper end of the protective shell, the lower end of the discharge pipe 4 is arranged in the feed hole 6, the base block 7 is fixedly provided in the discharge unit 5, A trough 8 is provided at the upper end of the base block 7, and the position of the trough 8 corresponds to the position of the feed hole 6. The reagent in the hopper 3 falls into the trough 8 on the base block 7 in the discharge unit 5 along the discharge pipe 4 and the feed hole 6. A first motor 9 and a second motor 10 are provided on one side of the base block 7. A first discharge hole 11 is provided at the lower end of the base block away from the first motor 9 and the second motor 10. A second discharge hole 12 is provided at the lower end of the protective shell. The positions of the first discharge hole 11 and the second discharge hole 12 correspond to each other to ensure the smoothness of the discharge of the reagent. A first delivery pipe 13 and a second delivery pipe 14 are provided horizontally symmetrically in the base block 7. The first delivery pipe 13 and the second delivery pipe 14 are both connected to the trough 8 and the first discharge hole 11. The reagent in the trough 8 falls The crucible 22 is filled with the reagents through the first feeding pipe 13 and the second feeding pipe 14. The diameter of the first feeding pipe 13 is larger than that of the second feeding pipe 14. When the crucible 22 is filled, the reagents are quickly discharged through the first feeding pipe 13. When the crucible 22 is close to the target value, the reagents are slowly discharged through the second feeding pipe 14, thereby achieving fast and accurate discharge. A first feeding screw 15 is provided in the first feeding pipe 13. One end of the first feeding screw 15 is connected to the transmission shaft of the first motor 9. The other end of the first feeding screw 15 is located above the first discharge hole 11. When the first motor 9 is started, the first feeding screw 15 rotates to transport the reagents in the first feeding pipe 13 to the first discharge hole 11. The reagents fall along the first discharge hole 11 and the second discharge hole 12. A second feeding screw 16 is provided in the second feeding pipe 14, one end of the second feeding screw 16 is connected to the transmission shaft of the second motor 10, and the other end of the second feeding screw 16 is located above the first discharge hole 11. The second motor 10 is started, and the second feeding screw 16 rotates to transport the reagent in the second feeding pipe 14 to the first discharge hole 11. The reagent falls along the first discharge hole 11 and the second discharge hole 12. A high-precision weighing instrument 17 is fixedly provided below the unloading unit 5 in the box body 1 to accurately weigh the reagent. The center of the high-precision weighing instrument 17 corresponds to the position of the second discharge hole 12 to ensure that all the reagents falling along the second discharge hole 12 fall into the crucible 22 placed on the high-precision weighing instrument 17.The unloading unit 5 is arranged on the unloading position adjustment unit, and the unloading position adjustment unit includes a horizontally arranged transverse plate 34. The lower end of the protective shell is fixedly connected to the transverse plate 34, so that the transverse plate 34 and the unloading unit 5 become a whole, so that the position of the unloading unit 5 can be adjusted through the transverse plate 34 according to actual conditions. The two ends of the transverse plate 34 are vertically fixed with a frame plate 35. A second support plate 36 is horizontally fixed below the transverse plate 34 in the box body 1. A column 37 is vertically symmetrically provided on the upper end of the second support plate 36. A first threaded hole 38 is symmetrically opened at the lower end of the column 37. A plurality of second threaded holes 39 are evenly opened on the second support plate 36. The first threaded hole 38 and the second threaded hole 39 are evenly opened. The first bolt 40 is provided through the first threaded hole 38 and the second threaded hole 39, which not only ensures the reliable connection between the column 37 and the second support plate 36, but also makes disassembly and assembly convenient and quick, and can adjust the position of the column 37, thereby adjusting the horizontal position of the blanking unit 5. The column 37 is vertically fixed with a sliding post 41 on the side close to the frame plate 35, and a first slot 42 is provided in the middle position of the side of the frame plate 35 close to the sliding post 41. The sliding post 41 is provided in the first slot 42, and the frame plate 35 drives the blanking unit 5 on the cross plate 34 to move up and down along the sliding post 41. The upper end of the sliding post 41 is horizontally fixed with a block 43, and the middle position of the block 43 is provided with a third threaded hole 44. , a knob 45 is provided above the block 43, and a first screw 46 is vertically fixed at the middle position of the lower end of the knob 45, and a fourth threaded hole 47 is opened at the middle position of the upper end of the frame plate 35, and the third threaded hole 44 corresponds to the position of the fourth threaded hole 47, and the first screw 46 passes through the third threaded hole 44 and the fourth threaded hole 47. When the knob 45 is rotated clockwise, the lower end of the first screw 46 penetrates into the fourth threaded hole 47, and the frame plate 35 moves upward under the action of the first screw 46, so that the unloading unit 5 moves upward, and when the knob 45 is rotated counterclockwise, the length of the first screw 46 in the fourth threaded hole 47 is reduced, and the frame plate 35 moves downward under the action of the first screw 46, so that the unloading unit 5 moves downward, and the frame A first through slot 48 is provided on both sides of the plate 35, and a second screw 49 is provided in the first through slot 48. A clamping piece 50 is fixedly provided at one end of the second screw 49, and the clamping piece 50 is pressed against the slide post 41. A nut 51 is sleeved on the second screw 49. By tightening the nut 51, the clamping piece 50 and the slide post 41 are tightly pressed together, further ensuring the stability of the position of the frame plate 35. A second through slot 52 is provided on the frame plate 35, and the inner diameter of the second through slot 52 is larger than the inner diameter of the first through slot 48. The clamping piece 50 is provided in the second through slot 52. The position of the unloading unit 5 is adjusted by the unloading position adjustment unit. When crucibles 22 of different specifications and sizes are placed on the high-precision weighing instrument 17 as needed,The distance between the unloading unit 5 and the crucible 22 can be adjusted, which not only ensures that all the reagents fall into the crucible 22, but also reduces the impact of the impact force when the reagents fall into the crucible 22 on the weighing result. A first support plate 19 is fixedly provided horizontally on one side of the box body 1, and a sample tray 20 is provided above the first support plate 19 to support the crucible 22. Pull handles 58 are provided at both ends of the sample tray 20 to facilitate the transportation of the sample tray 20. Two groups of limit blocks 53 are fixedly provided in parallel and symmetrically on the upper end of the first support plate 19. The distance between the corresponding limit blocks 53 is the same as the width of the sample tray 20. The sample tray 20 moves between the limit blocks 53 on the first support plate 19, and the position of the sample tray 20 is adjusted by the limit blocks 53. The sample tray 20 is limited in size to ensure the stability of the moving trajectory of the sample tray 20. A groove 54 is provided on the inner wall of the limit block 53 near the box door 31, which is convenient for the sample tray 20 to enter smoothly between the limit blocks 53. A sample tray positioning sensor 55 is fixedly provided on the upper end of the first support plate 19 away from the box door 31. One end of the sample tray 20 is in contact with the sample tray positioning sensor 55 to ensure that the sample tray 20 moves to the specified position. 21 first grooves 21 are provided on the sample tray 20, and a crucible 22 is provided in the first groove 21 to ensure the stability of the placement of the crucible 22. A crucible detector 23 is provided in the sample tray 20 at the bottom of the first groove 21, which is convenient for the four-axis collaborative robot arm 2 to identify the position of the qualified crucible 22. The upper end of the first support plate 19 is fixedly provided with a defective sample tray 24 for carrying the crucible 22 that has failed to be weighed. The defective sample tray 24 is provided with three second grooves 25 to ensure the stability of the crucible 22. A defective crucible detector 26 is provided in the defective sample tray 24 at the bottom of the second groove 25 to facilitate the four-axis collaborative robot arm 2 to identify the position where the defective crucible 22 is placed. The end of the four-axis collaborative robot arm 2 is provided with an electric clamp 27, and the end of the electric clamp 27 is provided with a moving rod 28. The electric clamp 27 provides power for the horizontal movement of the moving rod 28. One end of the moving rod 28 is fixedly provided with an L-shaped connecting rod 29, and the lower end of the connecting rod 29 is fixedly provided with a mechanical The claw 30 is driven by the electric clamping claw 27 to move through the four-axis collaborative robot arm 2. When it moves to the specified position, the mechanical claw 30 is opened and closed by the moving rod 28 and the connecting rod 29 to grab the crucible 22. A silicone pad 60 is fixed on the mechanical claw 30, which can not only increase the stability of the crucible 22 grabbing, but also protect the crucible 22. Three fifth threaded holes 61 are provided on the connecting rod 29, and a sixth threaded hole 62 is provided on the mechanical claw 30. The positions of the fifth threaded hole 61 and the sixth threaded hole 62 correspond to each other. A second bolt 63 is provided through the fifth threaded hole 61 and the sixth threaded hole 62, which is convenient for adjusting the opening of the mechanical claw 30 according to the size of the crucible 22. A box door 31 is provided on the box body 1.To ensure the sealing inside the box body 1 and prevent the reagents in the crucible 22 from getting wet, a telescopic rod 56 is symmetrically provided at the connection between the upper end of the box door 31 and the box body 1 to facilitate the opening and closing of the box door 31. An electromagnetic lock 57 is fixedly provided at the upper end of the first support plate 19 near the box door 31. When the box door 31 is closed, the electromagnetic lock 57 and the box door 31 abut against each other to ensure the reliability of the box door 31 when closed. A touch screen 32 and an operation button 33 are provided on the box body 1 for operations such as starting, resetting, and pausing. During weighing, you can directly press the "pause" button to stop the work, take out the weighed sample, and press "reset" to continue to complete the subsequent work. Carrying handrails 64 are fixedly provided on the lower part of both sides of the box body 1 to facilitate the transportation of the box body 1. Horizontal adjustment feet 65 are symmetrically provided at the lower end of the box body 1 to facilitate the adjustment of the box body 1 to ensure that the box body 1 is in a horizontal state. A door handle 66 is provided on the box door 31 to facilitate opening the box door 31.

[0031] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A fully automatic intelligent weighing instrument, comprising a box, in which a four-axis collaborative robotic arm is fixedly installed, characterized in that: A hopper is provided in the box body on one side of the four-axis collaborative robot arm, a discharge pipe is provided at the lower end of the hopper, a discharge unit is provided below the discharge pipe, a protective shell is provided on the outside of the discharge unit, a feed hole is provided at the upper end of the protective shell, the lower end of the discharge pipe is provided in the feed hole, a base block is fixedly provided in the discharge unit, a material trough is provided at the upper end of the base block, the position of the material trough corresponds to the feed hole, a first motor and a second motor are provided on one side of the base block, and a first discharge port is provided at the lower end of the base block away from the first motor and the second motor The protective shell is provided with a second discharge hole at the lower end thereof, and the positions of the first discharge hole and the second discharge hole correspond to each other. A first feeding pipe and a second feeding pipe are provided in the base block in a horizontally symmetrical manner, and both the first feeding pipe and the second feeding pipe are connected to the material trough and the first discharge hole. The diameter of the first feeding pipe is larger than the diameter of the second feeding pipe. A first feeding screw is provided in the first feeding pipe, and one end of the first feeding screw is connected to the transmission shaft of the first motor. The other end of the first feeding screw is located above the first discharge hole, and a second feeding screw is provided in the second feeding pipe. , one end of the second feeding screw is connected to the transmission shaft of the second motor, and the other end of the second feeding screw is located above the first discharge hole, and a high-precision weighing instrument is fixedly provided below the unloading unit in the box body, and the center of the high-precision weighing instrument corresponds to the position of the second discharge hole, and the unloading unit is arranged on the unloading position adjustment unit, and a first supporting plate is fixedly provided on one side of the box body horizontally, and a sample tray is provided above the first supporting plate, and a plurality of first grooves are opened on the sample tray, and a crucible is provided in the first groove. A crucible detector is provided in the sample tray at the bottom of the groove, a defective sample tray is fixedly provided on the upper end of the first support plate, a plurality of second grooves are provided on the defective sample tray, a defective crucible detector is provided in the defective sample tray at the bottom of the second grooves, an electric clamp is provided at the end of the four-axis collaborative robot arm, a moving rod is provided at the end of the electric clamp, an L-shaped connecting rod is fixedly provided at one end of the moving rod, a mechanical claw is fixedly provided at the lower end of the connecting rod, a box door is provided on the box body, and a touch screen and operation buttons are provided on the box body.

2. A fully automatic intelligent weighing instrument according to claim 1, characterized in that: The unloading position adjustment unit includes a horizontally arranged transverse plate, the lower end of the protective shell is fixedly connected to the transverse plate, and a frame plate is vertically fixedly arranged at both ends of the transverse plate. A second support plate is horizontally fixedly arranged below the transverse plate in the box body, and a column is vertically and symmetrically arranged on the upper end of the second support plate. The lower end of the column is symmetrically provided with a first threaded hole, and a plurality of second threaded holes are evenly provided on the second support plate. The positions of the first threaded hole and the second threaded hole correspond to each other, and a first bolt is arranged through the first threaded hole and the second threaded hole. The column A sliding post is vertically fixed on one side near the frame plate, a first slot is provided in the middle of the frame plate near the sliding post, the sliding post is arranged in the first slot, a clamping block is horizontally fixed on the upper end of the sliding post, a third threaded hole is provided in the middle of the clamping block, a knob is provided above the clamping block, a first screw is vertically fixed on the middle of the lower end of the knob, a fourth threaded hole is provided in the middle of the upper end of the frame plate, the third threaded hole corresponds to the position of the fourth threaded hole, and the first screw passes through the third threaded hole and the fourth threaded hole.

3. A fully automatic intelligent weighing instrument according to claim 2, characterized in that: A first through slot is provided on both sides of the frame plate, a second screw is provided in the first through slot, a clamp is fixedly provided at one end of the second screw, the clamp is pressed against the slide column, and a nut is sleeved on the second screw.

4. A fully automatic intelligent weighing instrument according to claim 3, characterized in that: The frame plate is provided with a second through slot, the inner diameter of the second through slot is larger than the inner diameter of the first through slot, and the clamping member is disposed in the second through slot.

5. The fully automatic intelligent weighing instrument according to claim 1, characterized in that: A plurality of groups of limit blocks are symmetrically fixedly arranged on the upper end of the first support plate, and the distance between the corresponding limit blocks is the same as the width of the sample tray. A groove is provided on the inner wall of the limit block close to the box door. A sample tray positioning sensor is fixedly provided on the upper end of the first support plate away from the box door, and one end of the sample tray is in contact with the sample tray positioning sensor.

6. The fully automatic intelligent weighing instrument according to claim 1, characterized in that: Telescopic rods are symmetrically provided at the connection between the upper end of the box door and the box body, and an electromagnetic lock is fixedly provided on the upper end of the first support plate near the box door. When the box door is closed, the electromagnetic lock and the box door are pressed against each other.

7. The fully automatic intelligent weighing instrument according to claim 1, characterized in that: Both ends of the sample tray are provided with handles.

8. The fully automatic intelligent weighing instrument according to claim 1, characterized in that: A material level sensor is provided on the discharge pipe.

9. The fully automatic intelligent weighing instrument according to claim 1, characterized in that: A silicone pad is fixedly provided on the mechanical claw, a plurality of fifth threaded holes are provided on the connecting rod, a sixth threaded hole is provided on the mechanical claw, the positions of the fifth threaded holes correspond to the sixth threaded holes, and a second bolt is provided through the fifth threaded holes and the sixth threaded holes.

10. The fully automatic intelligent weighing instrument according to claim 1, characterized in that: The lower parts of both sides of the box body are fixedly provided with carrying handrails, the lower end of the box body is symmetrically provided with level adjustment feet, and the box door is provided with a door handle.

Images