Automatic weighing system

Abstract

The utility model relates to an automatic weighing system. The automatic weighing system comprises an environment bin and an automatic weighing device arranged in the environment bin. The automatic weighing device comprises a material taking / placing mechanism and a material storage mechanism, and a material taking / placing disc of the material taking / placing mechanism and a material storage disc of the material storage mechanism are constructed in the mode that a connecting part and a first supporting structure on the material taking / placing disc can penetrate through a circumferential notch in the material storage disc and a second supporting structure in the vertical direction respectively. And the weighing device is arranged on the second supporting structure, so that to-be-weighed materials on the second supporting structure are transferred to the first supporting structure or weighed materials on the first supporting structure are transferred to the second supporting structure. The automatic weighing system provided by the utility model can replace manual measurement in the prior art, and greatly overcomes the defects of low efficiency and large error in manual micro-scale measurement, recording and calculation in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of engine performance testing, in particular to an automatic weighing system for example, filter paper for sampling engine emission particulate matter. Background Art

[0002] Relevant laws and regulations require that all fuel engines (including gasoline engines and diesel engines) must meet particulate matter / particle number emission requirements, and the calibration of fuel engines must also be based on the test data in the emission experiment. When the fuel engine is conducting an emission experiment, the particulate matter in the exhaust gas is sampled in real time and collected on the sampling filter paper. By comparing the weight of the sampling filter paper before and after the experiment, the emission of particulate matter is calculated.

[0003] At present, the development laboratories of fuel engines mainly rely on the experimenters to use microbalances for manual measurement, and manually record and calculate the experimental data. However, during the measurement process, the operator enters the experimental environment, which will affect the environmental factors such as airflow, affecting the accuracy, repeatability and efficiency of weighing, resulting in large errors in the measurement results. As the regulations on particulate matter emissions become more stringent, the manual measurement method is not suitable for the current fuel engine development requirements. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above problems and / or other problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides an automatic weighing system, which includes an environmental chamber and an automatic weighing device arranged in the environmental chamber. The automatic weighing device includes a material taking / putting mechanism and a material storage mechanism, wherein the material taking / putting mechanism includes a manipulator and a material taking / putting assembly connected to the manipulator, and the material taking / putting assembly can be manipulated by the manipulator to take out materials to be weighed from the material storage mechanism or place weighed materials into the material storage mechanism; wherein the material taking / putting assembly includes a bracket plate connected to the manipulator and at least one material taking / putting tray connected to the bracket plate, and the material taking / putting tray includes a tray portion and a connecting portion extending radially outward from the tray portion and used to connect the tray portion to the bracket plate; the tray portion includes an inner circumference part and a first supporting structure located radially outside the inner peripheral part; the material storage mechanism includes a plurality of material storage trays, each material storage tray includes an outer peripheral part with a circumferential notch and a second supporting structure located radially inside the outer peripheral part; wherein the picking / discharging tray and the material storage tray are constructed so that the connecting part and the first supporting structure on the picking / discharging tray can respectively pass through the circumferential notch and the second supporting structure on the material storage tray in the vertical direction, so as to transfer the material to be weighed on the second supporting structure to the first supporting structure or transfer the weighed material on the first supporting structure to the second supporting structure.

[0006] According to one embodiment of the utility model, the first supporting structure of the material taking / discharging tray includes a plurality of first supporting portions and a plurality of first notches alternately arranged circumferentially on the radial outer side of the inner peripheral portion, and the plurality of first supporting portions provide a first supporting surface for placing materials; the second supporting structure of the material storage tray includes a plurality of second supporting portions and a plurality of second notches alternately arranged circumferentially on the radial inner side of the outer peripheral portion, and the plurality of second supporting portions provide a second supporting surface for placing materials; wherein the second notches are designed to allow the corresponding first supporting portions to pass therethrough in the vertical direction and the first notches are designed to allow the corresponding second supporting portions to pass therethrough in the vertical direction.

[0007] According to one embodiment of the utility model, a first limiting flange protruding beyond the first supporting surface is formed on the radial outer side of each first supporting portion, and the inner peripheral portion of the tray portion defines a surface that is sunken a distance relative to the first supporting surface to form a first sunken portion.

[0008] According to an embodiment of the utility model, a second limiting flange protruding beyond the second supporting surface is formed on the radial outer side of the second supporting portion, and a second sinking portion is defined on the radial inner side of each second supporting portion.

[0009] According to one embodiment of the utility model, the storage mechanism includes at least one first storage box for storing the weighed material and at least one second storage box for storing the material to be weighed, which are arranged at intervals in the circumferential direction, and each of the first storage box and the second storage box includes a box body and a plurality of storage trays arranged on the box body and spaced apart from each other in the vertical direction.

[0010] According to one embodiment of the utility model, the material storage mechanism also includes a motor and a turntable that can be driven to rotate by the motor, and the first material storage box and the second material storage box are placed on the turntable so as to rotate with the turntable, so that the first material storage box is placed in a working position to allow the weighed material on the material picking / discharging tray to be placed on the material storage tray in the first material storage box, or the second material storage box is placed in a working position to transfer the material to be weighed on the material storage tray in the second material storage box to the material picking / discharging tray.

[0011] According to one embodiment of the utility model, the box body includes a base fixed to the turntable, an upper cover and a plurality of columns fixedly connected between the base and the upper cover, and a plurality of positioning grooves spaced apart from each other are arranged on each column in the vertical direction so that the storage tray can be fixed by the positioning grooves on the plurality of columns located on the same vertical level.

[0012] According to one embodiment of the utility model, the automatic weighing device also includes a weighing scale, and the inner peripheral portion of the tray portion includes a central through hole and an open notch, the central through hole is designed to allow the weighing scale to pass through it in the vertical direction, so as to transfer the material to be weighed on the picking / discharging tray to the weighing scale or transfer the weighed material on the weighing scale to the picking / discharging tray, and the open notch is connected to the central through hole and one of the first notches to form an open space that avoids the weighing scale.

[0013] According to one embodiment of the utility model, the automatic weighing system further comprises a frame structure connected to the environmental bin, and the material taking / discharging mechanism and the material storage mechanism are fixed on the frame structure and are enclosed in the environmental bin by a sealing plate.

[0014] According to one embodiment of the utility model, an identification code is provided on each material, and the automatic weighing system further comprises a barcode scanner for identifying the identification code, so as to manage the measured weighing data of the material into a corresponding data group.

[0015] The automatic weighing system of the utility model replaces the manual measurement method in the prior art, and greatly overcomes the defects of low efficiency and large errors existing in the prior art when manual micro-scale measurement, recording and calculation are adopted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The features and advantages of the present invention will be clearly understood through the detailed description provided below with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and thus cannot be regarded as limiting the present invention, wherein:

[0017] Figure 1 A three-dimensional view of an automatic weighing system according to an exemplary embodiment of the present utility model is shown after a portion of the sealing plate is removed, wherein the material taking / discharging mechanism and the material storage mechanism, etc. included in the automatic weighing system are exposed.

[0018] Figure 2 Show Figure 1 An enlarged view of section A of the automatic weighing system is shown.

[0019] Figure 3 Show Figure 2 The schematic diagram of the material taking / discharging mechanism and material storage mechanism of the automatic weighing system shown.

[0020] Figure 4 Show Figure 3 The shown material taking / discharging tray is before taking out the material to be weighed from the material storage tray or after placing the weighed material into the material storage tray.

[0021] Figure 5 When taking out the material to be weighed or putting back the weighed material, the taking / putting tray and the storage tray are in an intermediate state of cooperation with each other. In this figure, the material is omitted for clarity.

[0022] Figure 6 Show Figure 3 The shown material taking / discharging tray is in a state after taking out the material to be weighed from the material storage tray or before placing the weighed material on the material storage tray.

[0023] Figure 7 Show Figure 3 A three-dimensional view of the first material storage box or the second material storage box included in the material storage mechanism shown. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. However, it is obvious to those skilled in the art that the implementation of the present invention may not have some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, any combination of the features and elements described below may be considered to implement the present invention, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments and advantages are for illustrative purposes only and should not be regarded as elements or limitations of the claims unless clearly stated in the claims.

[0025] In the following, terms such as "first", "second", etc. are used to describe the elements of the present application. These terms are only used to distinguish the various elements, and are not used to limit the nature, order or number of these elements. The terms "including" and "having" are used to express an open-ended inclusive meaning, and mean that there may be additional elements / components in addition to the listed elements / components.

[0026] Figure 1-7 The automatic weighing system according to one embodiment of the utility model is shown, and the system is used to perform a weighing experiment on a material 1 for collecting particulate matter emitted by a fuel engine (such as a gasoline engine, a diesel engine, etc.). The material 1 can be a clean filter paper before the fuel engine emission test, or a loaded filter paper after the emission test. Figure 1 As shown, the automatic weighing system according to this embodiment may include an environmental chamber 2 and an automatic weighing device disposed in the environmental chamber 2. The environmental chamber 2 provides a closed environmental condition such as constant temperature and constant humidity for the weighing experiment. The automatic weighing device may include a material taking / discharging mechanism 3, a material storage mechanism 4 and an optional barcode scanning gun 6.

[0027] The environmental chamber 2 can be optionally connected by multiple sealing plates to define a closed working area. Figure 1 It is further shown in the figure that the automatic weighing system can also include a frame structure 5 connected to the environmental chamber 2, thereby providing a mounting point. The material taking / discharging mechanism 3, the material storage mechanism 4 and the barcode scanning gun 6 are fixed on the frame structure 5 and are enclosed in the environmental chamber 2 through a sealing plate. Figure 1 and Figure 2 It can be seen that a sealing plate is provided on the frame structure 5 and is sealed to the environmental chamber 2, thereby connecting the inner cavities of the environmental chamber 2 and the frame structure 5 and providing the same closed environmental conditions.

[0028] Figure 2 and Figure 3 The automatic weighing device is shown with a material taking / discharging mechanism 3 and a material storage mechanism 4. Figure 2 and Figure 3As shown, the material taking / discharging mechanism 3 may include a manipulator 31 and a material taking / discharging assembly. The manipulator 31 may have six degrees of freedom, namely, the degrees of freedom of movement along the three rectangular coordinate axes of x, y, and z and the degrees of freedom of rotation around these three coordinate axes, so that the manipulator 31 can bypass obstacles and has a compact structure. The fixed end of the manipulator 31 is connected to the frame structure 5, and the free end of the manipulator 31 is connected to the material taking / discharging assembly, so that under the manipulation of the manipulator 31, the material taking / discharging assembly can take out the material 1 to be weighed from the storage mechanism 4, or place the weighed material 1 into the storage mechanism 4.

[0029] like Figure 3 As shown, the material taking / discharging assembly may specifically include a support plate 32 and at least one material taking / discharging tray 33. The support plate 32 is fixedly connected to the manipulator 31, and the material taking / discharging tray 33 is connected to one end of the support plate 32, thereby extending the distance between the material taking / discharging tray 33 and the manipulator 31 to prevent the manipulator 31 from interfering with the material taking / discharging tray 33 when the manipulator 31 moves. Optionally, Figure 3 It is also shown that the material taking / discharging assembly may include two material taking / discharging trays 33. The middle of the support plate 32 is fixed to the free end of the manipulator 31, and the two material taking / discharging trays 33 are respectively fixed to the two ends of the support plate 32. Advantageously, two material taking / discharging trays 33 of different sizes can be provided to adapt to materials 1 of different specifications. Accordingly, the storage mechanism 4 may include a plurality of storage trays 41.

[0030] Figures 4 to 6 Schematic diagram of the process of cooperation between the material taking / discharging tray 33 and the material storage tray 41 is shown. Figures 4 to 6 As shown, the material taking / discharging tray 33 may include a tray portion 331 and a connecting portion 332, and the tray portion 331 may include an inner peripheral portion 3311 and a first supporting structure. The first supporting structure is used to support the material 1 on the material taking / discharging tray 33, and the connecting portion 332 is used to connect the tray portion 331 to the bracket plate 32. Accordingly, each material storage tray 41 may include an outer peripheral portion 412 with a circumferential notch 411, and a second supporting structure located radially inward of the outer peripheral portion 412 and corresponding to the first supporting structure. The second supporting structure is used to support the material 1 on the material storage tray 41.

[0031] Especially from Figure 5From the top, when the material taking / discharging tray 33 is engaged with the material storage tray 41, the outer peripheral part 412 roughly corresponds to the radial outer side of the first supporting structure, the inner peripheral part 3311 roughly corresponds to the radial inner side of the second supporting structure, and the first supporting structure and the second supporting structure are adapted to each other, and the connecting part 332 of the material taking / discharging tray 33 is adapted to the circumferential notch 411, thereby making it possible for the connecting part 332 of the material taking / discharging tray 33 and the first supporting structure to respectively pass through the circumferential notch 411 on the material storage tray 41 and the second supporting structure in the vertical direction (from bottom to top or from top to bottom), so that the material 1 to be weighed on the second supporting structure can be transferred to the first supporting structure before the weighing test, or the weighed material 1 on the first supporting structure can be transferred to the second supporting structure after the weighing test.

[0032] Specifically, Figures 4 to 6 As shown, the first support structure of the material taking / discharging tray 33 may include a plurality of first support portions 3312 and a plurality of first notches 3313 alternately arranged along the circumferential direction on the radial outer side of the inner peripheral portion 3311. The plurality of first support portions 3312 provide a first support surface for placing the material 1. Correspondingly, the second support structure of the material storage tray 41 may include a plurality of second support portions 413 and a plurality of second notches 414 alternately arranged along the circumferential direction on the radial inner side of the outer peripheral portion 412. The plurality of second support portions 413 provide a second support surface for placing the material 1. Each second notch 414 is adapted to the corresponding first support portion 3312 to allow the first support portion 3312 to pass through the corresponding second notch 414 in the vertical direction (from bottom to top or from top to bottom). Each first notch 3313 is adapted to the corresponding second support portion 413 to allow each second support portion 413 to pass through the corresponding first notch 3313 in the vertical direction (from bottom to top or from top to bottom).

[0033] Alternatively, see especially Figure 5 A first limiting flange 3314 is provided on the radially outer side of each first supporting portion 3312. Each first limiting flange 3314 is provided on the radially outer side of each first supporting portion 3312. Figure 5 As shown, the upper portion protrudes beyond the first supporting surface, thereby defining a limiting cavity for placing the material 1 on the picking / discharging tray 33 through a plurality of first limiting flanges 3314 and the first supporting surface.

[0034] Correspondingly, a second limiting flange 415 protruding beyond the second supporting surface is arranged on the radial outer side of the second supporting portion 413, thereby a limiting cavity for placing the material 1 on the storage tray 41 is jointly defined by the plurality of second limiting flanges 415 and the second supporting surface.

[0035] When the material 1 is used as the sampling filter paper, it may include a frame portion and a relatively thin filter paper disposed in the frame portion. In the process of moving the filter paper upward, in order to prevent the filter paper from touching the material taking / discharging tray 33 or the material storage tray 41 and affecting the experimental results, refer to Figure 5 As shown, the inner circumference 3311 of the tray portion 331 defines a surface, which is sunken by a distance relative to the first supporting surface, thereby forming a first sunken portion 3315 that can avoid the material 1. Correspondingly, the radial inner side of each second supporting portion 413 can also be sunken by a distance relative to the second supporting surface, thereby forming a second sunken portion 416 that can avoid the material 1.

[0036] Return to reference Figure 2 and Figure 3 As shown, the storage mechanism 4 may include at least one first storage box 42 and at least one second storage box 43 arranged at intervals in the circumferential direction. The first storage box 42 is used to store the weighed material 1, and the second storage box 43 is used to store the material 1 to be weighed. Each first storage box 42 and the corresponding second storage box 43 may be as shown in FIG. Figure 5 For example, there are two pairs of first material storage boxes 42 and second material storage boxes 43, the first pair is arranged side by side on both sides of the first direction, so that the material taking / putting tray 33 can take and put the material 1 back and forth in the first direction. The second pair is arranged side by side on both sides of the second direction opposite to the first direction, so that the material taking / putting tray 33 can take and put the material 1 back and forth in the first direction. Optionally, as Figure 7 As shown, the first material storage box 42 and the second material storage box 43 may each include a box body 44 and a plurality of material storage trays 41 arranged on the box body and spaced apart from each other in the vertical direction.

[0037] In order to place the first material storage box 42 and the second material storage box 43 at their respective working positions, so as to place the weighed material 1 on the material receiving / discharging tray 33 into the material storage tray 41 in the first material storage box 42, or to transfer the material 1 to be weighed on the material storage tray 41 in the second material storage box 43 to the material receiving / discharging tray 33, the storage mechanism 4 may further include: Figure 3 The motor 45 and the turntable 46 shown. The motor 45 is fixed to the frame structure 5, and the output end of the motor 45 is connected to the turntable 46 to rotate the turntable 46 by the motor actuation. A plurality of first storage boxes 42 and a plurality of second storage boxes 43 are fixed to the turntable 46, and the first storage boxes 42 and the second storage boxes 43 can be driven by the motor 45 to rotate synchronously with the turntable 46.

[0038] Specifically, refer to Figure 7As shown, the box body 44 of the first storage box 42 or the second storage box 43 may include a base 441, an upper cover 442 and a plurality of columns 443. The base 441 may be fixed to the turntable 6 via a plurality of fasteners (e.g., bolts), the lower ends of the plurality of columns 443 are connected to the base 441, and the upper cover 442 is connected to the upper ends of the plurality of columns 443, thereby forming a support frame for a plurality of storage trays 41. A plurality of positioning grooves 4431 spaced apart from each other are provided on each column in the vertical direction, and the width of each positioning groove 4431 is adapted to the thickness of the storage tray 41, thereby a storage tray 41 may be fixed by the positioning grooves 4431 of the plurality of columns 443 located on the same vertical level. As shown Figure 7 In the specific embodiment shown, six positioning posts 443 are provided, and the base 441 and the upper cover 442 are roughly square or rectangular in structure, so that the first storage box 42 and the second storage box 43 are provided with two positioning posts 443 on three of the four vertical faces, thereby allowing the circumferential notch 411 of the storage tray 41 to be exposed on the remaining face, thereby allowing the material taking / discharging tray 33 to be inserted from this face into the first storage box 42 or the second storage box 43 for material taking / discharging operations.

[0039] Optionally, the automatic weighing device may further include a weighing balance (not shown), which may be an ultra-micro balance with a resolution of 0.1 micrograms, and the portion of the weighing balance where the material 1 is placed is roughly circular. Figure 4 As shown, the inner peripheral portion 3311 of the tray portion 331 may include a central through hole 33111 and an open notch 33112. The central through hole 33111 is adapted to the circular portion of the weighing scale for placing the material 1, so that when the material 1 to be weighed on the material taking / discharging tray 33 is transferred to the weighing scale (i.e., the material 1 is transferred before weighing), or when the weighed material 1 on the weighing scale is transferred to the material taking / discharging tray 33 (i.e., the material 1 is transferred after weighing), the weighing scale can transfer the material 1 through the central through hole 33111. The radial outer end of the open notch 33112 is connected to one of the first notches 3313 (see Figure 4 ), the radial inner end is connected to the central through hole 33111, thereby providing an open space for avoiding the weighing scale before or after weighing.

[0040] Figure 1 and Figure 2 Also shown is a barcode scanner 6 disposed on one side of the material storage mechanism 4. An identification code is disposed on each material 1. After the material 1 is taken from the material storage tray 41 by the material taking / discharging tray 33, the material 1 can be moved to the barcode scanner 6, and the identification code is read by the barcode scanner 6, so that the weighing data of the material 1 measured subsequently can be managed into the data group corresponding to the identification code, thereby automatically recording and managing the weighing data, reducing the risk of process and data errors.

[0041] Moreover, in the above-mentioned embodiment, the manipulator 31 and the motor 45 can be connected to the control cabinet outside the environmental chamber 2, so that the operator can operate the manipulator to take and place the material 1 during the weighing process, and the first storage box 42 and the second storage box 43 can be set in the working position through the motor to facilitate the taking / putting tray 33 to take and place the material 1 between the storage tray 41 and the weighing scale.

[0042] Industrial Applicability

[0043] The automatic weighing system according to the utility model is suitable for measuring the particle emission of fuel engines, especially gasoline engines. However, it should be understood that the automatic weighing system according to the utility model can also be used to measure other fine particles, such as pollen, dust and other fine particles.

[0044] Below Figures 1 to 7 Taking the illustrated embodiment as an example, the working process of the automatic weighing system according to the utility model is briefly described.

[0045] First, the operator places a plurality of materials 1 to be weighed into the storage tray 41 of the second storage box 43 one by one, so that the materials 1 are limited in the limiting cavity formed by the plurality of second limiting flanges 415 of the storage tray and the second supporting surface.

[0046] Secondly, the operator adjusts the second material storage box 43 to the working position through the control cabinet next to the environmental bin 2, and operates the manipulator 31 to adjust the movement in six degrees of freedom, so that the material taking / discharging tray 33 arranged at its free end can be inserted into the vertical gap between two adjacent material storage trays 41, and each first supporting portion 3312 is aligned with the corresponding second notch 414, and each second supporting portion 413 is aligned with the corresponding first notch 3313, as shown in FIG. Figure 4 shown.

[0047] Again, the manipulator 31 moves upward along the vertical direction with the pick-up / discharge tray 33, so that the connecting portion 332 of the pick-up / discharge tray 33 passes through the circumferential notch 411 of the storage tray 41 until it reaches Figure 5 In the position shown, the material 1 is supported on the first supporting surface of the material taking / discharging tray 33 and the second supporting surface of the material storage tray 41 at the same time, and is limited by the limiting cavities of the material taking / discharging tray 33 and the material storage tray 41 at the same time.

[0048] Then, the manipulator 31 continues to move upward along the vertical direction with the pick-up / discharge tray 33, so that the pick-up / discharge tray 33 can lift the material 1 upward. In this way, the material 1 can be separated from the storage tray 41 and only limited on the first supporting surface of the pick-up / discharge tray 33 by the plurality of first limiting flanges 3314, as shown in FIG. Figure 6When the connecting portion 332 completely passes through the circumferential notch 411 of the material storage tray 41 and each first supporting portion 3312 completely passes through the corresponding second notch 414, the manipulator 31 moves with the material loading / unloading tray 33 and the material 1 to the barcode scanner 6 for identification, and then moves to the weighing scale.

[0049] Finally, the material taking / putting tray 33 moves to the top of the weighing scale and moves the material 1 downward in the vertical direction, so that the weighing scale can completely pass through the central through hole 33111 of the material taking / putting tray 33, thereby placing the material 1 on the weighing scale. After weighing, the manipulator 31 separates the material taking / putting tray 33 and the weighed material from the weighing scale.

[0050] After weighing, the process of transferring the weighed material 1 into the first material storage box 42 can refer to the reverse operation of the above steps, which will not be repeated here.

[0051] As described above, the automatic weighing system according to the utility model passes through the circumferential notch 411 of the material storage tray 41 in the vertical direction through the connecting portion 332 on the material taking / discharging tray 33, and passes through the second supporting structure of the material storage tray 41 through the first supporting structure on the material taking / discharging tray 33, so that the material 1 to be weighed can be transferred from the second supporting structure to the first supporting structure, or the weighed material 1 can be transferred from the first supporting structure to the second supporting structure. The entire weighing process is completely completed in a constant temperature and humidity environment chamber, replacing the manual measurement in the prior art, greatly overcoming the defects of low efficiency and large errors in the prior art when using manual micro-scale measurement, recording and calculation.

[0052] For those skilled in the art, various modifications and variations may be made to the embodiments disclosed above without departing from the scope or spirit of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from the practice of the utility model disclosed in this specification. This specification and the examples disclosed therein should be considered to be illustrative only, and the true scope of the utility model is specified by the appended claims and their equivalents.

Claims

1. An automatic weighing system, comprising an environmental chamber (2) and an automatic weighing device arranged in the environmental chamber (2), characterized in that: The automatic weighing device comprises a material taking / discharging mechanism (3) and a material storage mechanism (4), wherein the material taking / discharging mechanism comprises a manipulator (31) and a material taking / discharging assembly connected to the manipulator, and the material taking / discharging assembly can be manipulated by the manipulator to take out a material (1) to be weighed from the material storage mechanism or to place a weighed material into the material storage mechanism; The material taking / putting assembly comprises a support plate (32) connected to the manipulator and at least one material taking / putting tray (33) connected to the support plate, wherein the material taking / putting tray comprises a tray portion (331) and a connecting portion (332) extending radially outward from the tray portion and used to connect the tray portion to the support plate; the tray portion comprises an inner peripheral portion (3311) and a first supporting structure located radially outside the inner peripheral portion; The material storage mechanism (4) comprises a plurality of material storage trays (41), each material storage tray comprising an outer peripheral portion (412) with a circumferential notch (411) and a second supporting structure located radially inward of the outer peripheral portion; The material taking / discharging tray and the material storage tray are constructed so that the connecting portion on the material taking / discharging tray (33) and the first supporting structure can respectively pass through the circumferential notch (411) on the material storage tray (41) and the second supporting structure in the vertical direction, so as to transfer the material (1) to be weighed on the second supporting structure to the first supporting structure or transfer the weighed material on the first supporting structure to the second supporting structure.

2. The automatic weighing system according to claim 1, characterized in that: The first supporting structure of the material taking / putting tray (33) comprises a plurality of first supporting portions (3312) and a plurality of first notches (3313) arranged alternately in the circumferential direction on the radially outer side of the inner peripheral portion (3311), wherein the plurality of first supporting portions provide a first supporting surface for placing the material (1); The second supporting structure of the material storage tray (41) comprises a plurality of second supporting portions (413) and a plurality of second notches (414) arranged alternately along the circumferential direction on the radial inner side of the outer peripheral portion (412), wherein the plurality of second supporting portions provide a second supporting surface for placing materials; The second notch is designed to allow the corresponding first supporting portion to pass therethrough in a vertical direction, and the first notch is designed to allow the corresponding second supporting portion to pass therethrough in a vertical direction.

3. The automatic weighing system according to claim 2, characterized in that: A first limiting flange (3314) protruding beyond the first supporting surface is formed on the radial outer side of each first supporting portion (3312), and the inner peripheral portion (3311) of the tray portion (331) defines a surface that is sunken a distance relative to the first supporting surface to form a first sunken portion (3315).

4. The automatic weighing system according to claim 3, characterized in that: A second limiting flange (415) protruding beyond the second supporting surface is formed on the radial outer side of the second supporting portion (413), and a second sinking portion (416) is defined on the radial inner side of each second supporting portion.

5. The automatic weighing system according to any one of claims 1 to 4, characterized in that: The material storage mechanism (4) comprises at least one first material storage box (42) for storing the weighed material (1) and at least one second material storage box (43) for storing the material to be weighed, which are arranged at intervals in the circumferential direction. Each of the first material storage box and the second material storage box comprises a box body (44) and a plurality of material storage trays (41) arranged on the box body and spaced apart from each other in the vertical direction.

6. The automatic weighing system according to claim 5, characterized in that: The material storage mechanism (4) also includes a motor (45) and a turntable (46) that can be driven to rotate by the motor, and the first material storage box (42) and the second material storage box (43) are placed on the turntable so as to rotate with the turntable, so that the first material storage box is placed in a working position to allow the weighed material (1) on the material taking / discharging tray to be placed on the material storage tray in the first material storage box, or the second material storage box is placed in a working position to transfer the material to be weighed on the material storage tray in the second material storage box to the material taking / discharging tray.

7. The automatic weighing system according to claim 6, characterized in that: The box body (44) includes a base (441) fixed to the turntable (46), an upper cover (442) and a plurality of columns (443) fixedly connected between the base and the upper cover, and a plurality of positioning grooves (4431) spaced apart from each other are provided on each column in the vertical direction so that the storage tray (41) can be fixed through the positioning grooves on the plurality of columns located on the same vertical level.

8. The automatic weighing system according to any one of claims 2 to 4, characterized in that: The automatic weighing device also includes a weighing scale, and the inner peripheral portion (3311) of the tray portion includes a central through hole (33111) and an open gap (33112), wherein the central through hole is designed to allow the weighing scale to pass through it in the vertical direction so as to transfer the material (1) to be weighed on the material taking / discharging tray (33) to the weighing scale or to transfer the weighed material on the weighing scale to the material taking / discharging tray, and the open gap (33112) is connected to the central through hole (33111) and one of the first gaps (3313) to form an open space that avoids the weighing scale.

9. The automatic weighing system according to any one of claims 1 to 4, characterized in that: The automatic weighing system further comprises a frame structure (5) connected to the environmental bin (2); the material taking / discharging mechanism (3) and the material storage mechanism (4) are fixed on the frame structure and are sealed in the environmental bin (2) via a sealing plate.

10. The automatic weighing system according to any one of claims 1 to 4, characterized in that: An identification code is provided on each material (1), and the automatic weighing system further comprises a code scanning gun (6) for identifying the identification code, so as to manage the measured weighing data of the material into a corresponding data group.

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