A sample adding and weighing device for powder materials

Abstract

The present invention discloses a sample adding and weighing device for powder materials, which includes a loading and unloading mechanism, a weighing mechanism, and a position adjusting mechanism. The loading and unloading mechanism includes a sleeve with an opening at the bottom, a fan blade in contact with the bottom of the sleeve, and a driving mechanism for controlling the opening or closing of the opening by the fan blade; the position adjusting mechanism is connected to the sleeve and is used to adjust the position of the sleeve so that the powder material in the sleeve can fall onto the weighing mechanism. The present invention adjusts the position of the loading and unloading mechanism above the weighing mechanism through the position adjusting mechanism, and then controls the opening of the opening by the fan blade through the driving mechanism on the loading and unloading mechanism, so that the powder material in the sleeve falls, so as to realize sample adding of powder materials to the weighing mechanism, thereby replacing the method of manually scooping materials with a small spoon in the prior art and realizing the automation of sample adding and weighing of powder materials.

Description

Technical Field

[0001] The present invention belongs to the technical field of powder material sampling and weighing, and particularly relates to a sampling and weighing device for powder materials. Background Art

[0002] In the prior art, when quantitatively sampling and adding powder materials, especially when strict requirements are imposed on the weight of powder materials, it is still necessary for workers to take out the powder materials with a small spoon and then weigh them. When weighing the powder materials, it is often necessary to weigh the samples of the powder materials with a microbalance, which not only requires a long weighing time but also involves multiple weight samplings of the powder materials. As a result, the sampling efficiency of the powder materials is low, and it is difficult to meet the requirements of rapid batch sampling. Therefore, it can be seen that how to develop a device that can automatically sample and weigh powder materials is an urgent problem for those skilled in the art at present. Summary of the Invention

[0003] In view of the above deficiencies in the prior art, the present invention provides a sampling and weighing device for powder materials to achieve automatic sampling and weighing of powder materials.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A sampling and weighing device for powder materials, comprising:

[0006] A weighing mechanism;

[0007] A loading and unloading mechanism, including a sleeve with an opening at the bottom, a fan blade in contact with the bottom of the sleeve, and a driving mechanism for controlling the fan blade to close or open the opening;

[0008] A position adjustment mechanism, connected to the sleeve, for adjusting the position of the sleeve so that the powder materials in the sleeve fall onto the weighing mechanism.

[0009] Further, the fan blade includes:

[0010] A first blade, which is located inside the sleeve and closes or opens the opening under the drive of the driving mechanism;

[0011] A second blade, which is located outside the sleeve and spirally lifts the powder materials located below the sleeve so that the powder materials enter the sleeve through the opening.

[0012] Further, the opening is a sector-shaped opening, the first blade is a three-dimensional blade with a triangular cross-section, and the bottom surface of the first blade in contact with the bottom of the sleeve is a sector that can cover the sector-shaped opening.

[0013] Further, the angle between the second blade and the horizontal plane is 30° - 50°.

[0014] Further, the driving mechanism includes:

[0015] A rotating shaft located inside the sleeve, with one end of the rotating shaft connected to the fan blade;

[0016] A motor located above the sleeve and connected to the rotating shaft, and the motor is used to control the axial rotation of the rotating shaft.

[0017] Further, a top plate is provided at the top of the sleeve, and the motor is installed on a mounting plate located on the top plate. Among them, the motor is connected to the rotating shaft through a coupling.

[0018] Further, the weighing mechanism includes:

[0019] A containing container for containing the powder material falling from the sleeve;

[0020] A weighing sensor provided below the containing container for real-time detection of the mass of the containing container.

[0021] Further, the position adjustment mechanism includes:

[0022] A vertical movement module connected to the sleeve for driving the sleeve to move in the vertical direction;

[0023] A horizontal movement module connected to the vertical movement module for driving the vertical movement module to move in the horizontal direction;

[0024] A rotating platform connected to the horizontal movement module for driving the horizontal movement module to rotate horizontally.

[0025] Further, a vibration mechanism is further included, and the vibration mechanism includes a vibration motor sleeved outside the sleeve.

[0026] Further, a control system for controlling the position adjustment of the sleeve by the adjustment mechanism is further included; the control system is also used to control the sample addition of the loading and unloading mechanism according to the weight data detected by the weighing mechanism.

[0027] A sample adding and weighing device for powder materials provided by the present invention adjusts the position of the feeding and discharging mechanism above the weighing mechanism through a position adjusting mechanism, and then controls the opening of the fan blade to the opening through a driving mechanism on the feeding and discharging mechanism, so that the powder materials located in the sleeve fall, so as to realize adding samples of powder materials to the weighing mechanism, thereby replacing the way of manually scooping materials with a small spoon in the prior art, and realizing the automation of adding samples and weighing of powder materials.

[0028] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0030] Figure 1 is a schematic structural diagram of a sample adding and weighing device for powder materials according to an exemplary embodiment of the present invention;

[0031] Figure 2 is a schematic structural diagram of a sample adding and weighing device for powder materials according to an exemplary embodiment of the present invention;

[0032] Figure 3 is a partial enlarged view of the bottom of the sleeve according to an exemplary embodiment of the present invention;

[0033] In the figure: 1 - sleeve, 2 - fan blade, 3 - rotating shaft, 4 - motor, 5 - containing container, 6 - weighing sensor, 7 - vertical moving module, 8 - horizontal moving module, 9 - rotating platform, 10 - module connecting plate, 11 - rotating plate, 12 - bending plate, 13 - vibration motor, 14 - top plate, 15 - mounting plate, 16 - coupling, 201 - first blade, 202 - second blade. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0035] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0036] In the present invention, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention and are not used to limit the present invention.

[0038] A sampling and weighing device for powder materials provided by the present invention, see Figure 1 and 2 , includes a loading and unloading mechanism, a weighing mechanism, and a position adjustment mechanism. The loading and unloading mechanism includes a sleeve 1 with an opening at the bottom, a fan blade 2 in contact with the bottom of the sleeve 1, and a driving mechanism for controlling the opening or closing of the opening by the fan blade 2; the position adjustment mechanism is connected to the sleeve 1 and is used to adjust the position of the sleeve 1 so that the powder material in the sleeve 1 can fall onto the weighing mechanism.

[0039] The position of the loading and unloading mechanism above the weighing mechanism is adjusted by the position adjustment mechanism, and then the driving mechanism on the loading and unloading mechanism is used to control the opening of the opening by the fan blade 2, so that the powder material in the sleeve 1 falls, so as to realize the sampling of the powder material onto the weighing mechanism, thereby replacing the existing method of manually scooping materials with a small spoon and realizing the automation of the sampling and weighing of the powder material. Among them, before sampling the powder material, the loading and unloading mechanism is adjusted to above the powder material to be sampled by the position adjustment mechanism, and while controlling the downward movement of the sleeve 1, by controlling the rotation of the fan blade 2, the powder material below the sleeve 1 rises to the opening under the spiral drive of the rotation of the fan blade 2, so that the powder material enters the sleeve 1, and then by controlling the closing of the opening by the fan blade 2, the sampling of the powder material is completed; thus, it can be seen that the present invention can not only sample and weigh the powder material, but also complete the sampling of the powder material.

[0040] As a preferred embodiment, see Figure 3, the fan blade 2 includes a first blade 201 and a second blade 202. The first blade 201 is located inside the sleeve 1, and the first blade 201 closes or opens the opening under the drive of the drive mechanism; the second blade 202 is located outside the sleeve 1, and the second blade 202 spirally lifts the powder material located below the sleeve 1 under the drive of the drive mechanism, so that the powder material enters the sleeve 1 from the opening. By arranging the second blade 202 below the opening, when the device provided by the present invention samples the powder material, the material located below the sleeve 1 is scattered by the rotation of the second blade 202, so that the device can smoothly descend in the powder material container, and the powder material can be spirally moved into the opening along with the rotation of the second blade 202, and then the powder material enters the sleeve 1 from the opening, and by controlling the drive mechanism to make the first blade 201 close the opening, the sampling of the powder material can be completed; at the same time, the second blade 202 is located directly below the first blade 201 and is arranged outside the sleeve 1. Therefore, when the drive mechanism controls the first blade 201 to open the opening, the second blade 202 outside the sleeve 1 will not affect the powder material falling from the sleeve 1. For example, when the first blade 201 and the second blade 202 rotate simultaneously under the drive of the drive mechanism, if the second blade 202 is located inside the sleeve 1, the powder material located inside the sleeve 1 will fall from the opening under the rotation drive of the second blade 202. It can be seen that arranging the second blade 202 inside the sleeve 1 will directly affect the sampling speed of the powder material. Therefore, the second blade 202 outside the sleeve 1 can avoid the influence of the second blade 202 on the sampling speed of the powder material.

[0041] Furthermore, the opening is a sector-shaped opening, the first blade 201 is a three-dimensional blade with a triangular cross-section, and the bottom surface of the first blade 201 in contact with the bottom of the sleeve 1 is a sector that can cover the sector-shaped opening. By preferably selecting the first blade 201 as a three-dimensional blade with a triangular cross-section, it is possible to prevent powder materials from remaining on the first blade 201. At the same time, when sampling the powder materials in the sleeve 1, since the powder materials will be unevenly distributed at the bottom of the sleeve 1 after falling from the opening, therefore, by preferably selecting the first blade 201 as a three-dimensional blade with a triangular cross-section, it is also possible to stir the powder materials in the sleeve 1, so that the powder materials in the sleeve 1 can smoothly fall from the opening while avoiding the accumulation of powder materials at the bottom of the sleeve 1. By preferably selecting the opening as a sector-shaped opening and the bottom surface of the first blade 201 as a sector with a radius not less than the radius of the sector-shaped opening, the first blade 201 can axially rotate along the bottom surface of the sleeve 1 under the control of the driving mechanism, so that when the first blade 201 rotates above the opening, the space required for the rotation of the first blade 201 is also saved; at the same time, since the bottom surface of the first blade 201 is selected as a sector with a radius not less than the radius of the sector-shaped opening, when the first blade 201 rotates above the opening, the opening can be completely closed, thus avoiding the problem that the powder materials fall from the gap between the first blade 201 and the opening after sampling or adding the powder materials. Also, since both the opening and the bottom of the first blade 201 are sectors, by controlling the rotation angle of the first blade 201, the opening degree of the opening can be controlled, so that the adding speed of the powder materials can be controlled.

[0042] More specifically, the angle between the second blade 202 and the horizontal plane is 30° - 50°. When the second blade 202 rotates, the powder materials located below the second blade 202 are driven by the rotation of the second blade 202 to spiral upward along the length direction of the sleeve 1, so that the powder materials enter the inside of the sleeve 1 from the opening to achieve the adding of the device. Preferably, the second blade 202 is detachably connected to the rotating shaft 3 by bolts.

[0043] Furthermore, the driving mechanism includes a rotating shaft 3 and a motor 4. The rotating shaft 3 is located inside the sleeve 1, and one end of the rotating shaft 3 is connected to the fan blade 2. The motor 4 is located above the sleeve 1 and connected to the rotating shaft 3. The motor 4 is used to control the axial rotation of the rotating shaft 3. Preferably, the motor 4 is a servo motor that can drive the rotating shaft 3 to rotate forward and backward. When sampling the powder material, by controlling the forward rotation of the motor 4 to drive the second blade 202 to rotate, the powder material is driven by the rotation of the second blade 202 to enter the sleeve 1 through the opening. When adding the sample to the powder material, by controlling the reverse rotation of the motor 4 to drive the first blade 201 to move to the position of opening the opening, so that the powder material drops from the opening, thereby realizing the addition of the sample to the powder material. In short, by controlling the forward and reverse rotation of the rotating shaft 3 by the servo motor, the differential control of sample addition and sampling of the powder material can be realized.

[0044] Among them, the top end of the sleeve 1 is provided with a top plate 14, and the motor 4 is installed on the mounting plate 15 located on the top plate 14. Among them, the motor 4 is connected to the rotating shaft 3 through a coupling 16.

[0045] As a preferred embodiment, the weighing mechanism includes a containing container 5 and a weighing sensor 6. The containing container 5 is used to contain the powder material falling from the sleeve 1. The weighing sensor 6 is arranged below the containing container 5 and is used to detect the mass of the containing container 5 in real time. Preferably, the containing container 5 is preferably a crucible.

[0046] As a preferred embodiment, the position adjustment mechanism includes a vertical movement module 7, a horizontal movement module 8 and a rotating platform 9. The vertical movement module 7 is connected to the sleeve 1. The vertical movement module 7 is used to drive the sleeve 1 to move in the vertical direction. The horizontal movement module 8 is connected to the vertical movement module 7. The horizontal movement module 8 is used to drive the vertical movement module 7 to move in the horizontal direction. The rotating platform 9 is connected to the horizontal movement module 8. The rotating platform 9 is used to drive the horizontal movement module 8 to rotate horizontally. In this embodiment, by driving the horizontal movement module 8 and the vertical movement module 7 to rotate by the rotating platform 9, and the position adjustment of the sleeve in the horizontal and vertical directions by the horizontal movement module 8 and the vertical movement module 7, the sleeve 1 can sample and add samples at any position within the movement range, thereby meeting the requirements of multi-station work of the loading and unloading mechanism. Preferably, the rotating platform 9 includes a rotating plate 11 and a motor for controlling the rotation of the rotating plate 11. The rotating plate 11 is connected to the horizontal movement module 8. A module connecting plate 10 is provided on the horizontal movement module 8. The vertical movement module 7 is slidably connected to the module connecting plate 10. When the sleeve 1 is adjusted to an appropriate position, the module connecting plate 10 fixes the vertical movement module 7 to complete the adjustment of the position of the sleeve 1. Among them, the vertical movement module 7 is connected to the outside of the sleeve 1 through a bent plate 12.

[0047] As a preferred embodiment, it further includes a vibration mechanism, and the vibration mechanism includes a vibration motor 13 sleeved outside the sleeve 1. By turning on the vibration mechanism provided outside the sleeve 1, the powder material adhering to the inner wall of the sleeve 1 can be shaken off, thereby avoiding the retention of the powder material in the sleeve 1. Moreover, by controlling the vibration mechanism, the micro-sampling of the powder material can also be controlled, thus facilitating the micro-sampling of the powder material. Preferably, the vibration motor 13 is detachably connected to the sleeve 1 through a clamp.

[0048] Furthermore, the sample adding and weighing device further includes a control system for controlling and adjusting the position of the sleeve 1 by the control adjustment mechanism; the control system is also used to control the sample adding of the loading and unloading mechanism according to the weight data detected by the weighing mechanism. For example, after the weighing mechanism detects and feeds back the weight of the powder material to the control system in real time, when micro-sampling is required, the control system will reduce the gap between the first blade 201 and the opening by controlling the motor 4, so that the powder material can be added slowly to ensure the accuracy of the sample adding of the powder material.

[0049] The usage method of a sample adding and weighing device for powder materials provided by the present invention is as follows: When taking the powder material, by controlling the rotation of the rotating platform 9 and the movement of the horizontal movement module 8, the sleeve 1 is moved to the picking station, and then driven to move downward by the vertical movement module 7. At the same time, by controlling the motor 4 to drive the rotating shaft 3 and the fan blade 2 to rotate forward, the powder material enters the inside of the sleeve 1 from the opening at the bottom of the sleeve 1. When it reaches the bottom of the container, stop the rotation of the motor 4, so that the first blade 201 on the rotating shaft 3 completely covers the opening at the bottom of the sleeve 1, thereby enclosing the powder material in the sleeve 1. Then, move the sleeve 1 upward by the vertical movement module 7 until the sleeve 1 leaves the position of the container containing the powder material, and the sampling of the powder material can be completed. When adding samples by the device provided by the present invention, move the sleeve 1 directly above the crucible by controlling the rotating platform 9, the horizontal movement module 8 and the vertical movement module 7, and control the motor 4 to drive the rotating shaft 3 to reverse, so that the first blade 201 opens a certain gap for the opening, and then the powder material falls from the gap between the first blade 201 and the opening. Among them, in order to make the powder material fall smoothly from the opening, the motor 4 can also be controlled to drive the rotating shaft 3 to make the first blade 201 and the second blade 202 rotate forward or reverse, so that the powder material is evenly dispersed at the bottom of the sleeve 1, and then control the motor 4 to drive the rotating shaft 3 to reverse, so that the powder material falls from the opening. Therefore, the micro-sampling of the powder material is realized by the continuous forward and reverse movement of the motor 4; finally, when the powder material is close to the required weight or no longer adding samples, control the motor 4 to rotate to open the opening by the first blade 201, drive the sleeve 1 to vibrate by the vibration mechanism, so that the powder material falls from the sleeve 1, and when the added powder material reaches the required weight, immediately control the motor 4 to rotate to make the first blade 201 close the opening located at the bottom of the sleeve 1.

[0050] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A sample adding and weighing device for powder materials, characterized in that, Comprising: A weighing mechanism; A loading and unloading mechanism, including a sleeve (1) with an opening at the bottom, a fan blade (2) in contact with the bottom of the sleeve (1), and a driving mechanism for controlling the fan blade (2) to close or open the opening; A position adjustment mechanism, connected to the sleeve (1), for adjusting the position of the sleeve (1) so that the powder material in the sleeve (1) falls onto the weighing mechanism; The fan blade (2) includes: A first blade (201), which is located inside the sleeve (1), and the first blade (201) closes or opens the opening under the drive of the driving mechanism; A second blade (202), which is located outside the sleeve (1), and the second blade (202) spirally lifts the powder material located below the sleeve (1) under the drive of the driving mechanism, so that the powder material enters the sleeve (1) through the opening.

2. The sampling and weighing device for powder materials according to claim 1, characterized in that, The opening is a fan-shaped opening, the first blade (201) is a three-dimensional blade with a triangular cross-section, and the bottom surface of the first blade (201) in contact with the bottom of the sleeve (1) is a fan shape that can cover the fan-shaped opening.

3. The sampling and weighing device for powder materials according to claim 1, wherein The included angle between the second blade (202) and the horizontal plane is 30° - 50°.

4. The sampling and weighing device for powder materials according to claim 1, wherein The driving mechanism includes: A rotating shaft (3), which is located inside the sleeve (1), and one end of the rotating shaft (3) is connected to the fan blade (2); A motor (4), which is located above the sleeve (1) and connected to the rotating shaft (3), and the motor (4) is used to control the axial rotation of the rotating shaft (3).

5. The sampling and weighing device for powder materials according to claim 4, characterized in that, The top end of the sleeve (1) is provided with a top plate (14), and the motor (4) is installed on a mounting plate (15) located on the top plate (14), wherein the motor (4) is connected to the rotating shaft (3) through a coupling (16).

6. The sampling and weighing device for powder materials according to claim 1, wherein, The weighing mechanism includes: A containing container (5), for containing the powder material falling from the sleeve (1); A weighing sensor (6), provided below the containing container (5), for real-time detecting the mass of the containing container (5).

7. A sampling and weighing device for powder materials according to claim 1, characterized in that, The position adjustment mechanism includes: A vertical movement module (7), connected to the sleeve (1), for driving the sleeve (1) to move in the vertical direction; A horizontal movement module (8), connected to the vertical movement module (7), for driving the vertical movement module (7) to move in the horizontal direction; A rotating platform (9), connected to the horizontal movement module (8), for driving the horizontal movement module (8) to rotate horizontally.

8. A sample adding and weighing device for powder materials according to claim 1, characterized in that, It further includes a vibration mechanism, and the vibration mechanism includes a vibration motor (13) sleeved outside the sleeve (1).

9. A sample adding and weighing device for powder materials according to any one of claims 1 to 8, characterized in that, It further includes a control system for controlling the position adjustment of the sleeve (1) by the adjustment mechanism; the control system is further used to control the sample addition of the loading and unloading mechanism according to the weight data detected by the weighing mechanism.

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