Automatic height correction device suitable for Abell stability test

Abstract

The utility model relates to the technical field of Abell stability test equipment, and discloses an automatic height correcting device suitable for an Abell stability test, which comprises a workbench, a height correcting device and a height correcting device, the fixing seat and the grabbing mechanism are installed on the workbench, the fixing seat is used for embedding and installing a test tube, the grabbing mechanism comprises a clamping assembly and a lifting assembly used for adjusting the height of the clamping assembly, the clamping assembly is located above the fixing seat and used for clamping a test paper frame in a releasable mode, and the lower end of the test paper frame is used for being connected with potassium iodide starch test paper; the monitoring unit is used for identifying the height of the potassium iodide starch test paper in the test tube; and the control unit is electrically connected with the clamping assembly, the lifting assembly and the monitoring unit. According to the utility model, the monitoring unit is used for identifying the height of the potassium iodide starch test paper in the test tube, so that errors caused by human eye observation are avoided, the problem that the potassium iodide starch test paper is in contact with or adhered to the wall of the test tube due to human shaking can be avoided, and the accuracy of a test result is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of Abel stability testing equipment, and in particular to an automated height correction device applicable to Abel stability testing. Background Technology

[0002] The Abel test for the stability of nitroglycerin involves heating nitroglycerin at 72°C, causing it to decompose and release nitrogen oxide gas, which reacts with potassium iodide on test paper. The time it takes for a brown line to appear is used to measure its stability. During the test, it is crucial to precisely control the height of the lower edge of the potassium iodide starch test paper from the bottom of the test tube to be 76 mm, ensuring that the potassium iodide starch test paper hangs naturally without touching the inner wall of the test tube.

[0003] Currently, most traditional Abel stability testing apparatuses rely on manual operation. This method is not only inefficient, but also, even with graduations on the test tubes, it's difficult to guarantee consistent height across tests by visual observation alone. This introduces human error, affecting the accuracy and comparability of the test data. Furthermore, for complex test procedures requiring frequent height adjustments, manual operation can easily cause the potassium iodide starch test paper to come into contact with or stick to the test tube wall, failing to meet the requirements for rapid and accurate testing.

[0004] Therefore, developing a device capable of automated high-precision correction is of great significance for improving the efficiency and quality of Abel stability testing. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this invention aims to provide an automated height correction device suitable for Abel stability testing, which solves the problem of inaccurate distance between the lower edge of potassium iodide starch test paper and the bottom of the test tube, and reduces the problem of contact or adhesion between potassium iodide starch test paper and the test tube wall.

[0006] To achieve the above objectives, the technical solution of this utility model is: an automated height correction device applicable to the Abel stability test, comprising:

[0007] Workbench;

[0008] A fixed base and a gripping mechanism are installed on the workbench. The fixed base is used to embed and install test tubes. The gripping mechanism includes a clamping component and a lifting component for adjusting the height of the clamping component. The clamping component is located above the fixed base and is used to grip the test paper holder in a releasable manner. The lower end of the test paper holder is used to connect potassium iodide starch test paper.

[0009] A monitoring unit for identifying the height of the potassium iodide starch test paper in the test tube; and

[0010] A control unit electrically connected to the clamping assembly, lifting assembly, and monitoring unit.

[0011] Furthermore, the clamping assembly is an electric gripper, and the clamping assembly includes a base and two opposing grippers connected to the lower part of the base, the two grippers being able to move closer to or further away from each other.

[0012] Furthermore, the two grippers are slidably connected to the underside of the base.

[0013] Furthermore, the lifting assembly includes:

[0014] The connecting frame is fixedly connected to the base;

[0015] A sliding frame connected to the workbench, the sliding frame having a slide rail arranged vertically, the connecting frame being slidably connected to the slide rail, and two pulleys rotatably connected to the sliding frame, the two pulleys being located at the upper and lower ends of the slide rail respectively, the two pulleys being connected by a sleeved belt drive, a portion of the belt being fixedly connected to the connecting frame; and

[0016] A power component that is driven by at least one of the belt pulleys, the power component being electrically connected to a control unit.

[0017] Furthermore, the power component is selected from servo motors or stepper motors.

[0018] Furthermore, the monitoring unit is a camera installed on the workbench. The camera is used to identify the height of the potassium iodide starch test paper in the test tube and feed it back to the control unit. The control unit adjusts the height of the potassium iodide starch test paper in the test tube by controlling the rotation angle of the power component.

[0019] Furthermore, the test strip holder includes:

[0020] A rubber stopper detachably connected to the test tube opening; two grippers releasably gripping the test strip holder; and

[0021] A glass rod, the lower section of which is fixedly inserted through the rubber stopper and connected to the potassium iodide starch test paper.

[0022] Furthermore, the control unit is an industrial control computer.

[0023] Compared with the prior art, this utility model has at least the following advantages:

[0024] In use, place the test tube with the opening facing upwards and install the lower end of the test tube on the fixed base. The control unit controls the clamping component to clamp the test strip holder and controls the lifting component to lower the clamping component and the test strip holder. The monitoring unit identifies the height of the potassium iodide starch test strip in the test tube in real time and feeds it back to the control unit. When the lower edge of the potassium iodide starch test strip is 76mm above the bottom of the test tube, the control unit controls the lifting component to stop moving and uses the clamping component to release the clamp on the test strip holder. Then, the control unit controls the lifting component to raise the component, thus completing the process of installing the potassium iodide starch test strip in the test tube.

[0025] This invention utilizes a monitoring unit to identify the height of potassium iodide starch test paper in the test tube, avoiding errors caused by human visual observation and improving work efficiency. The clamping and lifting components prevent the potassium iodide starch test paper from contacting or sticking to the test tube wall due to human shaking, ensuring high repeatability and improving the accuracy of test results. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the automated height correction device applicable to the Abel stability test of this utility model;

[0028] Figure 2 This is a schematic diagram of the overall structure of the automated height correction device (without a worktable) applicable to the Abel stability test according to this utility model;

[0029] Figure 3 This is a cross-sectional view of the lifting assembly of this utility model;

[0030] Figure 4 This is a schematic diagram of the assembly of the test paper holder and the potassium iodide starch test paper of this utility model.

[0031] Reference numerals: 1. Workbench; 2. Fixed base; 3. Clamping assembly; 4. Lifting assembly; 5. Test paper holder; 6. Potassium iodide starch test paper; 7. Monitoring unit; 8. Test tube; 31. Machine base; 32. Gripper; 41. Connecting frame; 42. Sliding frame; 43. Slide rail; 44. Pulley; 45. Belt; 46. Power component; 51. Rubber stopper; 52. Glass rod. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figure 1-2 This utility model provides an automated height correction device applicable to the Abel stability test, which is used to solve the problem of inaccurate distance between the lower edge of the potassium iodide starch test paper 6 and the bottom of the test tube 8, and to reduce the problem of contact or adhesion between the potassium iodide starch test paper 6 and the wall of the test tube 8.

[0035] The specific structure includes a workbench 1, a fixed base 2, a gripping mechanism, a monitoring unit 7, and a control unit (not shown in the figure). The workbench 1 is a frame structure, serving as the support for the entire device. The fixed base 2 is placed on the workbench 1, with a blind hole at its upper end for embedding test tubes 8. The lower end of the test tube 8 is embedded in the blind hole to fix it and position it vertically. The upper end of the test tube 8 protrudes from the fixed base 2, and the monitoring unit 7 can monitor the image information of the upper end of the test tube 8. The gripping mechanism includes a clamping component 3 and a lifting component 4. The clamping component 3 is located above the fixed base 2 and can releasably grip a test paper holder 5. The lower end of the test paper holder 5 is connected to potassium iodide starch test paper 6. The lifting component 4 is used to adjust the height of the clamping component 3. The monitoring unit 7 is used to identify the height of the potassium iodide starch test paper 6 in the test tube 8. The control unit is electrically connected to the clamping component 3, the lifting component 4, and the monitoring unit 7, and is preferably an industrial computer.

[0036] It should be noted that the present invention can use an external power supply or a power device such as a battery to provide power to components such as the control unit, clamping assembly 3, lifting assembly 4 and monitoring unit 7.

[0037] In use, the opening of test tube 8 faces upward, and the lower end of test tube 8 is installed on the fixed base 2. The control unit controls the clamping component 3 to clamp the test paper holder 5, and controls the clamping component 3 and the test paper holder 5 to descend by controlling the lifting component 4. The monitoring unit 7 identifies the height of the potassium iodide starch test paper 6 in test tube 8 in real time and feeds it back to the control unit. When the lower edge of the potassium iodide starch test paper 6 is 76mm above the bottom of test tube 8, the control unit controls the lifting component 4 to stop moving and uses the clamping component 3 to release the clamp on the test paper holder 5. Then the control unit controls the lifting component 4 to lift the component, thus completing the process of installing the potassium iodide starch test paper 6 in test tube 8.

[0038] This invention utilizes a monitoring unit 7 to identify the height of the potassium iodide starch test paper 6 within the test tube 8, avoiding errors caused by human visual observation and improving work efficiency. The clamping assembly 3 and lifting assembly 4 prevent the potassium iodide starch test paper 6 from contacting or sticking to the wall of the test tube 8 due to human shaking, ensuring high repeatability and improving the accuracy of test results.

[0039] Preferably, the clamping assembly 3 is an electric gripper, which can be a structure based on existing technology. In this invention, the clamping assembly 3 includes a base 31 and two grippers 32 disposed opposite to each other below the base 31. The two grippers 32 are slidably connected to the lower part of the base 31, and can move closer or further apart to achieve the effect of clamping or releasing the test paper holder 5. The base 31 is equipped with a drive structure such as a servo motor or stepper motor, which can precisely control the distance between the two grippers 32. This is existing technology and will not be described in detail here.

[0040] Reference Figure 3 The lifting assembly 4 includes a connecting frame 41, a sliding frame 42, and a power component 46. The connecting frame 41 is fixed to the base 31; the sliding frame 42 is connected to the worktable 1, and a slide rail 43 is provided in the vertical direction of the sliding frame 42, with the connecting frame 41 slidably connected to it. Two pulleys 44 are rotatably connected to the sliding frame 42, located at the upper and lower ends of the slide rail 43 respectively. A belt 45 is fitted onto the two pulleys 44, and the pulleys are connected by a transmission belt 45. Part of the belt 45 is fixed to the connecting frame 41. The power component 46 is connected to at least one pulley 44 and electrically connected to the control unit. The power component 46 preferably uses a servo motor or a stepper motor, and is connected to one of the pulleys 44. The power component 46 drives the pulley 44 to rotate, which in turn drives the belt 45 to rotate on the pulley 44, further driving the base 31 to achieve the lifting effect.

[0041] The monitoring unit 7 is a camera mounted on the workbench 1, used to identify the height of the potassium iodide starch test paper 6 in the test tube 8 and feed it back to the control unit. The control unit adjusts the height of the potassium iodide starch test paper 6 in the test tube 8 by controlling the rotation angle of the power component 46. The control unit has a motion threshold for the potassium iodide starch test paper 6, which is that the height of the lower edge of the potassium iodide starch test paper 6 from the bottom of the test tube 8 is 76mm. When the camera captures that the height of the lower edge of the potassium iodide starch test paper 6 from the bottom of the test tube 8 is 76mm, the motion threshold is triggered, and the control unit will control the power component 46 to stop moving. At this time, the potassium iodide starch test paper 6 is installed in place.

[0042] Reference Figure 4 The test paper holder 5 includes a rubber stopper 51 and a glass rod 52. The rubber stopper 51 is an inverted truncated cone shape and is detachably connected to the test tube opening. Two grippers 32 can be released to hold the rubber stopper 51. The lower section of the glass rod 52 is fixedly inserted through the rubber stopper 51 and has a hook. The hook passes through the potassium iodide starch test paper 6 to fix the potassium iodide starch test paper 6.

[0043] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0044] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An automated height correction device for use in Abbe stability testing, characterized in that, The utility model relates to a kind of automatic test tube height adjustment device for iodized potassium starch test paper, including: Workbench (1); Fixed seat (2) and grabbing mechanism installed on the workbench (1), the fixed seat (2) is used to embed installation test tube (8), the grabbing mechanism includes clamping assembly (3) and the lifting assembly (4) for adjusting the height of clamping assembly (3), clamping assembly (3) is located above the fixed seat (2), and it is used to releasably clamp test paper holder (5), and the lower end of test paper holder (5) is used to connect iodized potassium starch test paper (6); Monitoring unit (7) for identifying the height of the iodized potassium starch test paper (6) in test tube (8);And Control unit is electrically connected with clamping assembly (3), lifting assembly (4) and monitoring unit (7).

2. The automated height correction device for Abbe's stability test of claim 1, wherein, The clamping assembly (3) is electrically operated jaw, and the clamping assembly (3) includes a base (31) and two oppositely arranged jaws (32) connected below the base (31), and the two jaws (32) can approach or move away from each other.

3. The automated height correction device for Abbe stability testing of claim 2, wherein, Two jaws (32) are slidably connected below the base (31).

4. The automated height correction device for Abbe stability testing of claim 2, wherein, The lifting assembly (4) includes: Fixedly connected with the base (31) connection frame (41); Sliding frame (42) is connected with the workbench (1), and sliding rail (43) is arranged in the vertical direction on the sliding frame (42), and the connection frame (41) is slidably connected with the sliding rail (43), two pulleys (44) are rotatably connected on the sliding frame (42), and the two pulleys (44) are located at the upper and lower ends of the sliding rail (43) respectively, and the two pulleys (44) are drivingly connected by sleeved belt (45), and part of the belt (45) is fixedly connected with the connection frame (41);And Power member (46) is drivingly connected with at least one of the pulleys (44), and the power member (46) is electrically connected with the control unit.

5. The automated height correction device for Abbe stability testing of claim 4, wherein, The power member (46) is selected from servo motor or stepper motor.

6. The automated height correction device for Abbe stability testing of claim 5, wherein, The monitoring unit (7) is a camera installed on the workbench (1), and the camera is used to identify the height of the iodized potassium starch test paper (6) in the test tube (8) and feedback to the control unit, and the control unit adjusts the height of the iodized potassium starch test paper (6) in the test tube (8) by controlling the rotation angle of the power member (46).

7. The automated height correction device for Abbe stability testing of claim 6, wherein, The test paper holder (5) includes: Rubber plug (51) is detachably connected with the mouth of the test tube (8), and the two jaws (32) releasably clamp the test paper holder (5);And Glass rod (52), the lower segment of the glass rod (52) is fixedly penetrated through the rubber plug (51) and connected with the iodized potassium starch test paper (6).

8. The automated height correction device for Abbe's stability test of any one of claims 1 to 7, characterized in that The control unit is industrial computer.

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