Automatic weighing device for test samples

Abstract

The utility model is suitable for test equipment field, this kind of automatic weighing device of test sample includes frame, setting in the holding platform and electronic weighing device of frame, this automatic weighing device further includes having set up between the holding platform with the electronic weighing device's transfer mechanism and setting in the sample holding frame of frame, sample transfer dump device is arranged between the sample holding frame with the electronic weighing device, this automatic weighing device still includes the control part for controlling each part work of device. The utility model can realize automatic transfer sample cup, automatic weighing sample, and can accurate control sample amount, improve test efficiency and guarantee the accuracy of sample amount, more complete automation equipment completes entire filling and weighing work, effectively protects the health of test personnel.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment, and in particular relates to an automatic weighing technology for sample testing. Background Technology

[0002] Currently, sample testing is generally conducted manually, especially for weighing powder samples. Testers typically add or remove excess sample while observing the electronic scale readings. This manual operation method, using traditional tools when transferring samples, poses a risk of cross-contamination between samples. This reduces testing efficiency and weighing accuracy. Furthermore, for some samples that may be harmful to human health, such as dust, manual handling can pose a health hazard to testers. Utility Model Content

[0003] The purpose of this invention is to provide an automatic weighing device for test samples, which adopts an automatic transfer of sample cups and a sample filling scheme. It aims to solve the technical problems of low test efficiency, cross-contamination between samples caused by powder samples being transferred to sample cups and using traditional tools, inaccurate values, and harm to the health of test personnel in the prior art.

[0004] This invention is implemented as follows: the automatic weighing device for test samples includes a frame, a holding platform mounted on the frame for placing sample cups, and an electronic weighing device for weighing sample quantities. The automatic weighing device further includes a transfer mechanism disposed between the holding platform and the electronic weighing device, and a sample holding rack disposed on the frame. A sample transfer tilting device is disposed between the sample holding rack and the electronic weighing device. The automatic weighing device also includes a control unit for controlling the operation of various parts of the device.

[0005] A further technical solution of this utility model is: the transfer mechanism is a robotic arm mounted on the frame, and its head is provided with a gripper for holding the sample cup.

[0006] A further technical solution of this utility model is: the sample holding rack is a tray with at least two rows of multi-compartment trays; the holding platform is a tray with at least two rows of multi-hole grooves.

[0007] A further technical solution of this utility model is: the sample transfer and tilting device includes a base for being mounted on the frame, a rotating rod for being mounted on the base, a rotating arm for being fixedly mounted at the top of the rotating rod, and a holding part for holding the sample paper bag hinged to the end of the rotating arm. The sample transfer and tilting device also includes a rotation drive device for driving the rotating rod to rotate and a pitch drive device for controlling the pitch movement of the holding part. Both the rotation drive device and the pitch drive device are controlled by the control unit.

[0008] A further technical solution of this utility model is as follows: the holding part includes a hinge shaft connected to the rotating arm, one end of the hinge shaft is connected to the pitch drive device, and the other end is provided with a suction cup for adsorbing sample paper bags; the sample transfer and tilting device also includes a vibration device controlled by the control unit, and a photoelectric sensor is provided on the bracket at the front end of the vibration device, which is connected to the control unit; the control unit includes a unit for adjusting the amplitude and vibration frequency of the vibration device.

[0009] A further technical solution of this utility model is: the automatic weighing device further includes a protective device disposed above the electronic weighing device; the protective device includes a lifting mechanism disposed on the frame and controlled by the control unit, the lifting part of the lifting mechanism is connected to an annular bracket, and the annular bracket is located above the electronic weighing device.

[0010] The beneficial effects of this utility model are: This automatic weighing device can automatically transfer sample cups, automatically weigh samples, and accurately control the sample quantity, thereby improving test efficiency and ensuring the accuracy of sample quantity, avoiding the risk of cross-contamination between samples, and completing the entire filling and weighing process through automated equipment, effectively protecting the health of test personnel. Attached Figure Description

[0011] Figure 1 This is a perspective view of the automatic weighing device provided in an embodiment of the present utility model;

[0012] Figure 2 This is a three-dimensional schematic diagram of the transfer mechanism provided in an embodiment of the present utility model;

[0013] Figure 3 This is a three-dimensional schematic diagram of the sample transfer and tilting device provided in an embodiment of the present invention;

[0014] Figure 4 This utility model provides a three-dimensional schematic diagram of the protective device. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0016] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0017] like Figures 1 to 4 As shown, this utility model provides an automatic weighing device for test samples, including a frame 10, a holding platform 20 disposed on the frame 10 for placing sample cups M, and an electronic weighing device 30 for weighing sample quantities. The automatic weighing device further includes a transfer mechanism 40 disposed between the holding platform 20 and the electronic weighing device 30, and a sample holding rack 50 disposed on the frame 10. A sample transfer and tilting device 60 is disposed between the sample holding rack 50 and the electronic weighing device 30. The automatic weighing device also includes a control unit 70 for controlling the operation of various parts of the device. The technical solution of this utility model is as follows: When it is necessary to load a sample into a sample cup, the first step is: the transfer mechanism 40 takes the sample cup from the holding platform 20 and then transfers it to the electronic weighing device 30; the second step is: the sample transfer and pouring device 60 takes the sample N from the sample holding rack 50 and moves it above the sample cup, pouring the sample into the sample cup. After the required amount is reached, the electronic weighing device 30 sends a signal to the control unit 70, and the control unit 70 controls the sample transfer and pouring device 60 to stop pouring the sample, thereby completing the sample loading work.

[0018] like Figure 2 As shown in the figure, the transfer mechanism 40 of this utility model is a robotic arm mounted on the frame 10. Its head is provided with a gripper 41 for holding the sample cup. The robotic arm is used for transfer, while the gripper holds the sample cup.

[0019] like Figure 1As shown, the sample holder 50 is a tray with at least two rows of multi-compartments; the holding platform 20 is a tray with at least two rows of perforated slots. In this solution, the tray is set in a double-row layout, with one row for empty cups and original samples, and the other row for filled sample cups and remaining samples. The perforated and multi-compartment layout is designed to reduce the frequency of tray changes.

[0020] like Figure 3 As shown, the sample transfer and tilting device 60 includes a base 61 mounted on the frame 10, a rotating rod 62 mounted on the base 61, a rotating arm 63 fixedly mounted at the top of the rotating rod 62, and a holding part 64 for holding the sample paper bag hinged to the end of the rotating arm 63. The sample transfer and tilting device 60 also includes a rotation drive device 65 for driving the rotating rod 62 to rotate and a pitch drive device 66 for controlling the pitch movement of the holding part 64. Both the rotation drive device 65 and the pitch drive device 66 are controlled by the control unit 70. In this design, the rotary rod 62 can rotate within a certain angle to transfer the sample from the sample holder 50 to above the sample cup. The rotary arm 63 can increase the transfer distance to facilitate transferring the sample to above the sample cup. The holding part is used to hold the sample. If the sample is in a cup (box), a clamping method can be used. If it is in a bag, it can be designed as follows: The holding part 64 includes a hinge shaft 641 connected to the rotary arm 63. One end of the hinge shaft 641 is connected to the pitch drive device 66, and the other end is provided with a suction cup 642 for adsorbing the sample paper bag. The hinged design allows the pitch movement of the holding part 64 to be controlled by the pitch drive device 66, enabling control of tilting the sample and stopping the tilting.

[0021] like Figure 3As shown, in order to speed up the pouring speed and improve the filling efficiency, the sample transfer and pouring device 60 also includes a vibration device 67 controlled by the control unit 70. A photoelectric sensor 671 is provided on the bracket at the front end of the vibration device 67, and the photoelectric sensor 671 is connected to the control unit 70. When the holding part 64 in the sample transfer and pouring device 60 moves the sample above the sample cup, it controls the holding part 64 to tilt downwards and pour the sample into the sample cup. In the initial pouring, the pouring speed and amount can be increased. This is accomplished by the vibration device 67 of this invention. When the adjustment is completed, when the holding part 64 in the sample transfer and pouring device 60 moves the sample above the sample cup, the photoelectric sensor 671 first senses the position of the sample. If no sample is detected, the pitch drive device 66 controls the holding part 64 to continue rotating clockwise until the sample container touches the vibration device 67. The vibration device 67 continuously applies vibration to the sample container, which can increase the pouring speed and amount. When it approaches the standard amount, the vibration can be reduced. This control action is accomplished by the amplitude and frequency adjustment unit 71 of the control unit 70 for controlling the vibration device 67.

[0022] like Figure 4 As shown, the automatic weighing device of this utility model also includes a protective device 80 disposed above the electronic weighing device 30. The protective device 80 includes a lifting mechanism 81 disposed on the frame 10 and controlled by the control unit 70. The lifting part of the lifting mechanism 81 is connected to a ring bracket 82, which is located above the electronic weighing device 30. When the sample cup is transferred to the electronic weighing device 30, it is not placed directly on the electronic weighing device 30 in one step. Instead, the sample cup is first placed on the ring bracket 82, and then the lifting mechanism 81 controls the ring bracket 82 to descend and gently place it on the electronic weighing device 30. In this way, the safety of the high-precision electronic weighing device 30 can be effectively protected, and the robot arm's movements can be too large, which could damage the high-precision electronic weighing device 30.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic weighing device for test samples, the automatic weighing device comprising a frame (10), a holding platform (20) disposed on the frame (10) for placing sample cups, and an electronic weighing device (30) for weighing sample portions, characterized in that, The automatic weighing device further includes a transfer mechanism (40) disposed between the holding platform (20) and the electronic weighing device (30) and a sample holding rack (50) disposed on the frame (10). A sample transfer and tilting device (60) is disposed between the sample holding rack (50) and the electronic weighing device (30). The automatic weighing device also includes a control unit (70) for controlling the operation of each part of the device.

2. The automatic weighing device for test samples according to claim 1, characterized in that, The transfer mechanism (40) is a robotic arm mounted on the frame (10), with a gripper (41) at its head for holding the sample cup.

3. The automatic weighing device for test samples according to claim 1, characterized in that, The sample holder (50) is a tray with at least two rows of multiple compartments.

4. The automatic weighing device for test samples according to claim 1, characterized in that, The holding platform (20) is a tray with at least two rows of perforated grooves.

5. The automatic weighing device for test samples according to any one of claims 1 to 4, characterized in that, The sample transfer and tilting device (60) includes a base (61) mounted on the frame (10), a rotating rod (62) mounted on the base (61), a rotating arm (63) fixedly mounted at the top of the rotating rod (62), and a holding part (64) for holding the sample paper bag hinged to the end of the rotating arm (63). The sample transfer and tilting device (60) also includes a rotary drive device (65) for driving the rotating rod (62) to rotate and a pitch drive device (66) for controlling the pitch movement of the holding part (64). The rotary drive device (65) and the pitch drive device (66) are both controlled by the control unit (70).

6. The automatic weighing device for test samples according to claim 5, characterized in that, The holding part (64) includes a hinge (641) connected to the rotary arm (63), one end of which is connected to the pitch drive device (66), and the other end is provided with a suction cup (642) for adsorbing sample paper bags.

7. The automatic weighing device for test samples according to claim 5, characterized in that, The sample transfer and tilting device (60) also includes a vibration device (67) controlled by the control unit (70). A photoelectric sensor (671) is provided on the bracket at the front end of the vibration device (67), and the photoelectric sensor (671) is connected to the control unit (70).

8. The automatic weighing device for test samples according to claim 7, characterized in that, The control unit (70) includes a unit (71) for adjusting the amplitude and frequency of the vibration device (67).

9. The automatic weighing device for test samples according to any one of claims 1 to 4, characterized in that, The automatic weighing device also includes a protective device (80) disposed above the electronic weighing device (30).

10. The automatic weighing device for test samples according to claim 9, characterized in that, The protection device (80) includes a lifting mechanism (81) mounted on the frame (10) and controlled by the control unit (70). The lifting part of the lifting mechanism (81) is connected to an annular bracket (82), which is located above the electronic weighing device (30).

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