High-precision weighing device

Abstract

The application relates to a high-precision weighing device which comprises a base, a high-precision weighing machine, a bearing seat, a turnover mechanism, a driving mechanism, a linkage rod and a measuring spoon; the high-precision weighing machine is fixedly arranged on the base; the bearing seat is fixedly connected with the base; the turnover mechanism is arranged above the high-precision weighing machine and comprises a rotating assembly and a positioning assembly for positioning the rotating assembly; the rotating assembly comprises a rotating piece, and the rotating piece is provided with a clearance groove in the circumferential direction of the rotating piece; the driving mechanism is fixedly arranged on the bearing seat, the turnover mechanism is in transmission connection with the driving mechanism; one end of the linkage rod is fixedly connected with the driving mechanism, and the other end of the linkage rod extends into the clearance groove; the measuring spoon is detachably connected with the turnover mechanism; after the positioning assembly positions the rotating assembly, the linkage rod is not in contact with the rotating piece. The application has the advantages of simple structure, low manufacturing cost, effectively reduced production cost, high weighing precision, effectively improved production efficiency and satisfaction of the needs of customers.

Description

Technical Field

[0001] This invention relates to the field of metrology equipment technology, and in particular to a high-precision weighing device. Background Technology

[0002] The level of weighing technology is an important indicator of a country's productivity, a crucial means of ensuring product consistency, and a bottleneck restricting production automation. Therefore, improving weighing technology is particularly necessary.

[0003] In the medical field, there is a "bone powder" used to repair bone damage. Due to its high price, each bottle contains 2mg and has a weighing accuracy of ±0.15mg. The current conventional weighing method is manual weighing, but manual weighing has large accuracy errors and low production efficiency.

[0004] To address this issue, Chinese invention patent CN112629631A discloses a high-precision automatic weighing device for mixed powders, comprising: a frame (1); a feeding mechanism (2) arranged on the frame (1); a weighing and discharging mechanism (5) arranged on the frame below the feeding mechanism for weighing and discharging powders; a quantitative spoon mechanism (3) arranged on the frame (1) to transport the powders in the feeding mechanism to the weighing and discharging mechanism in equal quantities for rapid coarse weighing of powders; and a rotary feeding mechanism (4) arranged on the frame. On the frame next to the quantitative spoon mechanism, a weighing and dispensing mechanism is connected for accurate weighing of powder. The feeding mechanism (2) includes a vertically arranged conical hopper (201), with a first discharge port and a first drawer plate (202) that can be horizontally moved to open and close the first discharge port at the bottom of the conical hopper. A first telescopic cylinder (203) is connected to the end of the first drawer plate away from the conical hopper. The fixed end of the first telescopic cylinder is connected to the frame (1), and the movable end is connected to the first drawer plate (202). A small hopper (204) is provided below the first discharge port. This device can ensure the weighing accuracy and weighing speed while maintaining the composition of the powder. It has a high degree of automation and effectively improves production efficiency. However, the structure of this device is very complex and the manufacturing cost is high, which cannot meet the needs of customers. Summary of the Invention

[0005] Therefore, it is necessary to provide a high-precision weighing device to address the problem that existing high-precision automatic weighing devices have complex structures and high manufacturing costs, which leads to high production costs.

[0006] A high-precision weighing device, comprising:

[0007] Base;

[0008] A high-precision weighing device, wherein the high-precision weighing device is fixedly mounted on the base;

[0009] The load-bearing base is fixedly connected to the base.

[0010] A flipping mechanism is provided above the high-precision weighing instrument. The flipping mechanism includes a rotating component and a positioning component for positioning the rotating component. The rotating component includes a rotating part and the rotating part is provided with a clearance groove.

[0011] A drive mechanism is fixedly mounted on the load-bearing base, and the tilting mechanism is connected to the drive mechanism in a transmission manner;

[0012] A linkage rod, one end of which is fixedly connected to the drive mechanism, and the other end of which extends into the clearance groove; and

[0013] A measuring spoon, wherein the measuring spoon is detachably connected to the flipping mechanism;

[0014] Once the positioning component positions the rotating component, the linkage rod will not contact the rotating component.

[0015] In one embodiment, the rotating assembly further includes a mounting base, a bearing, and a mounting component. The mounting base is fixedly mounted on the high-precision weighing instrument. The rotating component and the mounting component are rotatably mounted on the mounting base via the bearing. The rotating component has a fixed through hole, and the mounting component has a fixed threaded hole. A bolt passes through the fixed through hole and engages with the fixed threaded hole. The mounting component is fixedly connected to the rotating component, and the measuring spoon is detachably mounted on the mounting component.

[0016] In one embodiment, the rotating member includes a rotating rod portion and a connecting portion connecting the rotating rod portion. The rotating rod portion is located at the end of the connecting portion away from the mounting member. There are multiple rotating rod portions, which are spaced apart along the axial direction of the connecting portion. A clearance groove is provided between two adjacent rotating rod portions, and the fixing through hole penetrates the connecting portion.

[0017] In one embodiment, the mounting component includes a fixing part and a snap-fit ​​part connecting the fixing part, the fixing threaded hole is provided on the fixing part, and the inner ring of the bearing is fitted onto the fixing part and the connecting part.

[0018] In one embodiment, the measuring spoon is detachably connected to the mounting component via a fixed shaft. The snap-fit ​​part is provided with a snap-fit ​​groove, and a fixing groove is provided on the side wall of the snap-fit ​​part. The fixing groove communicates with the snap-fit ​​groove. The measuring spoon is provided with a snap-fit ​​connector, and the snap-fit ​​connector is provided with a fixing hole. The snap-fit ​​connector snaps into the snap-fit ​​groove, and the fixed shaft passes through the fixing groove and is inserted into the fixing hole, so that the measuring spoon is mounted on the mounting component.

[0019] In one embodiment, the positioning component includes an annular seat, a magnetic component connected to the annular seat, and a magnetic attracting component that is magnetically attracted to the magnetic component. The annular seat is fixedly mounted on the mounting base and surrounds the rotating component. The magnetic component is fixedly mounted on the annular seat, and the magnetic attracting component is fixed to the rotating rod portion.

[0020] In one embodiment, the drive mechanism includes a drive motor and a connecting member connected to the drive motor. The connecting member is fixedly connected to the output shaft of the drive motor. The connecting member includes a sleeve portion and a connecting part connected to the sleeve portion. The sleeve portion is fixedly fitted onto the output shaft of the drive motor, and the linkage rod is fixedly connected to the connecting part.

[0021] In one embodiment, the high-precision weighing device further includes a detection mechanism for detecting whether the measuring spoon has been reset. The detection mechanism includes a proximity switch and a detection ring used in conjunction with the proximity switch. The proximity switch is fixedly mounted on the load-bearing base, and the detection ring is fixedly fitted onto the connecting member. The detection ring has a notch.

[0022] In one embodiment, the high-precision weighing device further includes a controller, the proximity switch is communicatively connected to the controller, and the drive motor is electrically connected to the controller. During the resetting process of the measuring spoon, when the proximity switch detects the notch, the controller controls the drive motor to stop according to the information sent by the proximity switch, and the measuring spoon is reset to the correct position.

[0023] In one embodiment, a shock-absorbing foot ring is also included, which is fixedly disposed below the base.

[0024] The beneficial effects of this invention are as follows: This high-precision weighing device has a simple structure and low cost, effectively reducing production costs; the rotating part is positioned by the positioning component, and after the rotating part is positioned, the linkage rod and the rotating part do not contact each other, that is, the flipping mechanism and the driving mechanism do not contact each other. Thus, the weighing is not affected by the driving mechanism, effectively improving the weighing accuracy; this high-precision weighing device can be used in conjunction with a vibrating discharge device to achieve automatic filling, effectively improving production efficiency, increasing production capacity, reducing labor costs, and maximizing profits. Attached Figure Description

[0025] Figure 1 This is an assembly structure diagram of a high-precision weighing device according to one embodiment of the present invention;

[0026] Figure 2 For example Figure 1 A cross-sectional view of the high-precision weighing device shown on the central axis.

[0027] Figure 3 for Figure 1 Enlarged view of section A;

[0028] Figure 4 For example Figure 1 The diagram shows the structure of the connecting parts in the high-precision weighing device.

[0029] Figure 5 For example Figure 1 An exploded view of the tilting mechanism in the high-precision weighing device shown.

[0030] Figure 6 For example Figure 1 The diagram shows the assembly structure of the detection mechanism in the high-precision weighing device.

[0031] The meanings of the numbers in the attached diagram are as follows:

[0032] 100 - High-precision weighing device;

[0033] 10-Base;

[0034] 20 - High-precision weighing instrument;

[0035] 30 - Load-bearing seat;

[0036] 40-Drive mechanism, 41-Drive motor, 42-Connecting part, 421-Sleeve part, 422-Connecting part, 423-Connecting groove, 424-Connecting hole, 43-Baffle plate;

[0037] 50-Flipping mechanism, 51-Mounting base, 52-Bearing, 53-Rotating component, 531-Rotating rod, 532-Connecting part, 533-Leaving groove, 54-Mounting component, 541-Fixing part, 542-Snap-fit ​​part, 543-Snap-fit ​​groove, 544-Fixing groove, 55-Annular seat, 56-Magnetic component, 57-Magnetic suction component;

[0038] 60-Measuring spoon, 61-Stalk, 62-Spoon part, 63-Snap connector, 64-Fixing hole, 65-Fixing shaft;

[0039] 70-Linkage rod;

[0040] 80-Detection mechanism, 81-Proximity switch, 82-Detection ring, 83-Notch;

[0041] 90-Shock-absorbing ankle ring. Detailed Implementation

[0042] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0048] Please see Figure 1 A high-precision weighing device 100 according to an embodiment of the present invention includes a base 10, a high-precision weighing device 20, a support base 30, a drive mechanism 40, a flipping mechanism 50, a linkage rod 70, and a measuring spoon 60. The high-precision weighing device 20 and the support base 30 are fixedly mounted on the base 10, the drive mechanism 40 is fixedly mounted on the support base 30, the flipping mechanism 50 is mounted on the high-precision weighing device 20, the flipping mechanism 50 is connected to the drive mechanism 40 through the linkage rod 70, and the measuring spoon 60 is detachably connected to the flipping mechanism 50.

[0049] Please see Figure 1 The high-precision weighing device 20 is equipped with a display screen for displaying the weight of the powder, and a power switch is provided on the side of the high-precision weighing device 20. The model of the high-precision weighing device 20 is Toledo SPG high-precision weighing module, and the maximum weighing range of the high-precision weighing device 20 is 200g.

[0050] Please see Figure 2 and Figure 4 The drive mechanism 40 includes a drive motor 41 and a connecting member 42 connected to the drive motor 41. The connecting member 42 is fixedly connected to the output shaft of the drive motor 41. The connecting member 42 includes a sleeve portion 421 and a connecting portion 422 connected to the sleeve portion 421. The sleeve portion 421 is fixedly fitted onto the output shaft of the drive motor 41. The connecting portion 422 is provided with a connecting groove 423 and a connecting hole 424. The connecting hole 424 is located within the connecting groove 423. The linkage rod 70 is provided with a screw hole. The linkage rod 70 is inserted into the connecting groove 423. A bolt passes through the connecting hole 424 and engages with the screw hole. The linkage rod 70 is fixedly connected to the linkage member. There are four linkage rods 70, which are spaced apart circumferentially along the connecting portion 422. The connecting groove 423, the connecting hole 424, and the linkage rods 70 are in a one-to-one correspondence.

[0051] Please see Figure 2The drive mechanism 40 also includes a baffle 43. The output shaft of the drive motor 41 is axially provided with a screw hole. The baffle 43 is provided with a through hole. The bolt passes through the through hole and engages with the screw hole. The baffle 43 is positioned at the end of the connecting member 42 away from the drive motor 41.

[0052] Please see Figure 1 , Figure 3 and Figure 5 The flipping mechanism 50 includes a rotating component and a positioning component for positioning the rotating component. The rotating component includes a mounting base 51, a bearing 52, a rotating element 53, and a mounting element 54. The mounting base 51 is fixedly mounted on the high-precision weighing instrument 20, and the mounting base 51 is made of 6061 aluminum alloy. The rotating element 53 and the mounting element 54 are rotatably mounted on the mounting base 51 via the bearing 52. The bearing 52 is a deep groove ball bearing, model 6200-2Z, and weighs 25g. The rotating component 53 includes a rotating rod portion 531 and a connecting portion 532 connecting the rotating rod portion 531. The rotating rod portion 531 is located at the end of the connecting portion 532 away from the mounting component 54. There are four rotating rod portions 531, which are spaced apart along the axial direction of the connecting portion 532. A clearance groove 533 is provided between two adjacent rotating rod portions 531. The end of the linkage rod 70 away from the drive motor 41 extends into the clearance groove 533. A fixing through hole is provided axially through the connecting portion 532. The rotating component 53 is made of 6061 aluminum alloy.

[0053] Please see Figure 1 , Figure 3 and Figure 5 The mounting component 54 includes a fixing part 541 and a snap-fit ​​part 542 connecting the fixing part 541. The fixing part 541 has an axially formed fixing threaded hole, through which a bolt passes and engages with the fixing threaded hole. The mounting component 54 is fixedly connected to the rotating component 53. The inner ring of the bearing 52 is fitted over the connecting part 532 and the fixing part 541, thus making the connection between the mounting component 54 and the rotating component 53 more secure and stable during rotation. The snap-fit ​​part 542 is provided with a snap-fit ​​groove 543, and a fixing groove 544 is formed on the side wall of the snap-fit ​​part 542, which communicates with the snap-fit ​​groove 543. The mounting component 54 is made of 6061 aluminum alloy.

[0054] Please see Figure 1 , Figure 3 and Figure 5The measuring spoon 60 is detachably connected to the mounting component 54 via a fixed shaft 65. The measuring spoon 60 includes a rod 61 and a spoon portion 62 connected to the rod 61. A snap-fit ​​connector 63 is provided at the end of the rod 61 away from the spoon portion 62. The snap-fit ​​connector 63 is provided with a fixing hole 64. The snap-fit ​​connector 63 snaps into the snap-fit ​​groove 543. The fixed shaft 65 passes through the fixing groove 544 and is inserted into the fixing hole 64, so that the measuring spoon 60 is mounted on the mounting component 54. The fixed shaft 65 is made of 6061 aluminum alloy, and the measuring spoon 60 is made of 316 steel.

[0055] Please see Figure 1 , Figure 3 and Figure 5 The positioning assembly includes an annular seat 55, a magnetic component 56 connecting the annular seat 55, and a magnetic attracting component 57 attracted to the magnetic component 56. The annular seat 55 is fixedly mounted on the mounting base 51 and surrounds the rotating component 53. The magnetic component 56 is fixedly mounted on the annular seat 55, and the magnetic attracting component 57 is fixed to the rotating rod portion 531. The rotating component 53 can be quickly positioned using the cooperation of the magnetic component 56 and the magnetic attracting component 57. After the rotating component 53 is positioned, the linkage rod 70 does not contact the flipping mechanism 50, thus ensuring that the weighing is unaffected by the drive mechanism 40 and effectively improving the accuracy of the weighing. The annular seat 55 is made of 6061 aluminum alloy.

[0056] The bearing 52 weighs 25g. The mounting base, the rotating component, the mounting component, and the fixed shaft are all made of 6061 aluminum alloy, and the measuring spoon is made of 316 steel. Both 6061 aluminum alloy and 316 steel are lightweight metals with good mechanical strength. Therefore, the weight of the flipping mechanism 50 plus the measuring spoon 60 and the fixed shaft 65 does not exceed 200g. This ensures the working stability of the flipping mechanism 50 and also ensures that the maximum range of the high-precision weighing instrument 20 is not exceeded.

[0057] Please see Figure 2 and Figure 6 The high-precision weighing device 100 also includes a detection mechanism 80 for detecting whether the measuring spoon 60 has been reset. The detection mechanism 80 includes a proximity switch 81 and a detection ring 82 used in conjunction with the proximity switch 81. The proximity switch 81 is fixedly mounted on the load-bearing base 30, and the detection ring 82 is fixedly fitted onto the connecting member 42. A notch 83 is provided on the detection ring 82.

[0058] The high-precision weighing device 100 also includes a controller. The proximity switch 81 is communicatively connected to the controller, and the drive motor 41 is electrically connected to the controller. During the reset process of the measuring spoon 60, when the proximity switch 81 detects the notch 83, the controller controls the drive motor 41 to stop according to the information sent by the proximity switch 81, and the measuring spoon 60 resets to its original position. This ensures that the measuring spoon 60 can catch the powder each time it is dispensed, avoiding powder waste. The high-precision weighing device 20 is communicatively connected to the controller.

[0059] Please see Figure 1 The high-precision weighing device 100 also includes a shock-absorbing foot ring 90, which is fixedly disposed below the base 10.

[0060] It should be noted that the high-precision weighing device 100 is generally used in conjunction with a vibrating discharge device. The vibrating discharge device is connected to the controller and is placed above the high-precision weighing device 100. The filling bottle is placed directly below the measuring spoon 60, and a funnel is placed on the filling bottle.

[0061] The working principle of the high-precision weighing device 100 of this invention is as follows: Before operation, the controller drives the drive motor 41 to rotate according to the detection information of the proximity switch 81. The linkage rod 70 rotates with the output shaft of the drive motor 41, and the rotating part 53, pushed by the linkage rod 70, rotates the mounting part 54 and the measuring spoon 60 to reset the measuring spoon 60. The rotating part 53 is positioned by the cooperation of the magnetic part 56 and the magnetic suction part 57, thus ensuring that the measuring spoon 60 will not shift when receiving powder. After the rotating part 53 is positioned, the linkage rod 70 and the rotating part 53 do not contact each other, that is, the flipping mechanism 50 and the drive mechanism 40 do not contact each other. In this way, the weighing is not affected by the drive mechanism 40, which effectively improves the weighing accuracy. The vibrating discharge device vibrates and discharges the powder, and the powder falls into the scoop 62. When the display screen of the high-precision weighing device 20 shows that the weight of the powder has reached the target weight, the controller controls the vibrating discharge device to stop working. At the same time, the controller controls the drive motor 41 to work. The rotating part 53 is pushed by the linkage rod 70 to rotate the mounting part 54 and the measuring scoop 60, so that the measuring scoop 60 flips downward and pours the powder into the funnel. The powder flows into the filling bottle through the funnel to complete the powder filling.

[0062] The beneficial effects of this invention are as follows: The high-precision weighing device 100 has a simple structure and low cost, effectively reducing production costs; the rotating part 53 is positioned by the positioning component, and after the rotating part 53 is positioned, the linkage rod 70 does not contact the rotating part 53, that is, the flipping mechanism 50 does not contact the driving mechanism 40. Thus, the weighing is not affected by the driving mechanism 40, effectively improving the weighing accuracy; the high-precision weighing device 100 can be used in conjunction with a vibrating discharge device to achieve automatic filling, effectively improving production efficiency, increasing production capacity, reducing labor costs, and maximizing profits.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A high-precision weighing device, characterized in that, include: Base; A high-precision weighing device, wherein the high-precision weighing device is fixedly mounted on the base; The load-bearing base is fixedly connected to the base. A flipping mechanism is provided above the high-precision weighing instrument. The flipping mechanism includes a rotating component and a positioning component for positioning the rotating component. The rotating component includes a rotating part, a mounting base, and a mounting component. The rotating part includes a rotating rod and a connecting part connecting the rotating rod. The rotating rod is located at the end of the connecting part away from the mounting component. There are multiple rotating rods, which are spaced apart axially along the connecting part. A clearance groove is provided between two adjacent rotating rods. The positioning component includes an annular seat, a magnetic component connecting the annular seat, and a magnetic attracting component attracted to the magnetic component. The annular seat is fixedly mounted on the mounting base and surrounds the rotating component. The magnetic component is fixedly mounted on the annular seat, and the magnetic attracting component is fixed to the rotating rod. A driving mechanism is fixedly mounted on the load-bearing base, and the flipping mechanism is connected to the driving mechanism. A linkage rod, one end of which is fixedly connected to the drive mechanism, and the other end of which extends into the clearance groove; as well as A measuring spoon, wherein the measuring spoon is detachably connected to the flipping mechanism; Once the positioning component positions the rotating component, the linkage rod will not contact the rotating component.

2. The high-precision weighing device according to claim 1, characterized in that, The rotating assembly also includes a bearing. The mounting base is fixedly mounted on the high-precision weighing instrument. The rotating component and the mounting component are rotatably mounted on the mounting base via the bearing. The rotating component is provided with a fixing through hole that penetrates the connecting part. The mounting component is provided with a fixing threaded hole. A bolt passes through the fixing through hole and engages with the fixing threaded hole. The mounting component is fixedly connected to the rotating component. The measuring spoon is detachably mounted on the mounting component.

3. The high-precision weighing device according to claim 2, characterized in that, The mounting component includes a fixing part and a snap-fit ​​part that connects to the fixing part. The fixing threaded hole is provided on the fixing part, and the inner ring of the bearing is fitted onto the fixing part and the connecting part.

4. The high-precision weighing device according to claim 3, characterized in that, The measuring spoon is detachably connected to the mounting component via a fixed shaft. The snap-fit ​​part is provided with a snap-fit ​​groove, and a fixing groove is provided on the side wall of the snap-fit ​​part. The fixing groove communicates with the snap-fit ​​groove. The measuring spoon is provided with a snap-fit ​​connector, and the snap-fit ​​connector is provided with a fixing hole. The snap-fit ​​connector snaps into the snap-fit ​​groove, and the fixed shaft passes through the fixing groove and is inserted into the fixing hole, so that the measuring spoon is installed on the mounting component.

5. The high-precision weighing device according to claim 1, characterized in that, The drive mechanism includes a drive motor and a connecting member connected to the drive motor. The connecting member is fixedly connected to the output shaft of the drive motor. The connecting member includes a sleeve portion and a connecting part connected to the sleeve portion. The sleeve portion is fixedly fitted onto the output shaft of the drive motor. The linkage rod is fixedly connected to the connecting part.

6. The high-precision weighing device according to claim 5, characterized in that, It also includes a detection mechanism for detecting whether the measuring spoon has been reset. The detection mechanism includes a proximity switch and a detection ring used in conjunction with the proximity switch. The proximity switch is fixedly mounted on the support base, and the detection ring is fixedly fitted onto the outside of the connecting member. The detection ring has a notch.

7. The high-precision weighing device according to claim 6, characterized in that, It also includes a controller, the proximity switch is communicatively connected to the controller, and the drive motor is electrically connected to the controller. During the resetting process of the measuring spoon, when the proximity switch detects the notch, the controller controls the drive motor to stop according to the information sent by the proximity switch, and the measuring spoon is reset to the correct position.

8. The high-precision weighing device according to claim 1, characterized in that, It also includes shock-absorbing foot rings, which are fixedly installed below the base.

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