Tablet friability tester

Abstract

The utility model discloses a tablet friability tester which comprises friability testing equipment, and a testing angle adjusting assembly is arranged on the right front side of the friability testing equipment; the friability testing equipment comprises a machine body, detection wheel drums rotationally arranged on the left side and the right side of the machine body, and wheel drum covers covering the outer side end faces of the detection wheel drums in a screwed mode. According to the testing angle adjusting assembly, the triangular structure formed by the stand column and the supporting rod enhances the overall stability of the equipment, the silica gel pad at the bottom of the balance weight plate further buffers vibration, and it is guaranteed that the equipment operates stably in the testing process. The arc-shaped angle ruler plate realizes circumferential angle adjustment through threaded connection of the pointing screw rod and the stand column, the angle value marked on the surface of the arc-shaped angle ruler plate facilitates visual setting of the test angle, and the friability test requirements of tablets in different stress directions are met. The locking screw on the bottom plate is matched with the sliding block, double locking after angle adjustment is achieved, angle deviation in the testing process is prevented, and the accuracy of the testing result is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of tablet friability testing equipment, specifically to a tablet friability tester. Background Technology

[0002] The fragility of tablets is a key indicator of their resistance to breakage and a crucial aspect of quality control. However, traditional fragility testing techniques have revealed significant limitations in practical applications. Traditional testing instruments typically employ a fixed-angle rotational testing mode, simulating the force exerted on tablets only in a single direction. However, tablets undergo multi-angle mechanical impacts during actual production, transportation, and use due to packaging stacking, vibration friction, or accidental drops. For example, tablets transported in bottles may experience combined radial and axial forces due to shaking, and traditional equipment cannot simulate such complex stress scenarios, leading to significant deviations between test results and actual operating conditions, and failing to comprehensively assess the risk of tablet fragility. Therefore, those skilled in the art here provide a solution for a tablet fragility tester. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a tablet friability tester to address the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] The device includes a friability testing device, and a test angle adjustment component is provided on the right front side of the friability testing device. The friability testing device includes a body, a test drum that is rotatably arranged on the left and right sides of the body, and a drum cover that is screwed onto the outer end face of the test drum. A baffle is fixedly connected inside the test drum.

[0005] The test angle adjustment component includes a column, an arc-shaped angle ruler plate rotatably disposed on the front side of the column, and a support plate fixed on the lower surface of the arc-shaped angle ruler plate. The arc-shaped angle ruler plate has an arc-shaped sliding groove inside, and a pointing screw is movably disposed inside the arc-shaped sliding groove. The rear end of the pointing screw is screwed into the inside of the column.

[0006] A connecting block is fixedly connected to the left end of the support plate. A rotating shaft runs through and rotates inside the connecting block. The rear end of the rotating shaft is fixedly connected to the right side of the front surface of the machine body.

[0007] As a preferred embodiment of this utility model: a support rod is fixed on the rear surface of the column, forming a triangular structure between the support rod and the column, and a counterweight plate is fixedly connected to the bottom end of both the column and the support rod, with a layer of silicone pad fixed to the bottom surface of the counterweight plate by glue.

[0008] As a preferred embodiment of this utility model: a rotating column that penetrates the central area inside the arc-shaped angle ruler plate is fixedly connected to the middle section of the front end of the column.

[0009] As a preferred embodiment of this utility model: a threaded hole is provided on the upper front side of the column for the rear end of the pointing screw to be screwed in, and a rubber gasket is fitted on the outer ring of the pointing screw, with the rear surface of the rubber gasket in contact with the front end face of the arc-shaped angle ruler plate.

[0010] As a preferred embodiment of this utility model: the surface of the arc-shaped angle ruler is provided with angle values, the bottom surface of the arc-shaped angle ruler is fixedly connected to a base plate, and two locking screws are screwed through the inside of the base plate.

[0011] As a preferred embodiment of this utility model: a slide rail is provided on the upper surface of the support plate, and two sliders are slidably arranged inside the slide rail, with threaded holes provided on the top surface of each slider.

[0012] As a preferred embodiment of this utility model, the bottom section of the locking screw is screwed into the threaded hole inside the slider.

[0013] As a preferred embodiment of this utility model: the connecting block has a circular hole inside for the rotating shaft to pass through and rotate, and a limiting block is fixed at the front end of the rotating shaft, the diameter of the limiting block being larger than the inner diameter of the circular hole.

[0014] As a preferred embodiment of this utility model: a dual-shaft drive motor is installed inside the machine body, and the output shafts of the drive motor are fixedly connected to the inner end face of the detection drum through a coupling.

[0015] As a preferred embodiment of this utility model: a lead screw that penetrates the drum cover is fixed on the outer side wall of the detection drum, and an internal thread sleeve is screwed on the outer ring of the lead screw for pushing and tightening the drum cover to contact the detection drum; and support feet are installed at the four corners of the bottom surface of the machine body.

[0016] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0017] In this design, the triangular structure formed by the column and support rod enhances the overall stability of the equipment, while the silicone pad at the bottom of the counterweight plate further buffers vibration, ensuring smooth operation during testing. The arc-shaped angle gauge achieves circumferential angle adjustment via a threaded connection between the pointing screw and the column. The angle values ​​marked on its surface facilitate intuitive setting of the test angle, meeting the friability testing requirements of tablets under different force directions. The locking screw on the base plate, in conjunction with the slider, provides double locking after angle adjustment, preventing angle deviation during testing and ensuring the accuracy of the test results. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the tablet fragility testing equipment;

[0020] Figure 2 This is a schematic diagram of the test organism after disassembly.

[0021] Figure 3 This is a schematic diagram of the test angle adjustment component.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Friability testing equipment; 11. Machine body; 12. Control panel; 13. Testing drum; 14. Baffle; 15. Drum cover; 16. Internal threaded sleeve; 17. Lead screw; 18. Support foot; 2. Testing angle adjustment assembly; 21. Column; 22. Pointing screw; 23. Arc-shaped slide groove; 24. Arc-shaped angle ruler; 25. Locking screw; 26. Connecting block; 27. Rotating shaft; 28. Rotating column; 29. ​​Support plate; 210. Slider; 211. Slide rail; 212. Base plate; 213. Counterweight plate. Detailed Implementation

[0024] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0025] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0026] This tablet friability tester achieves efficient detection and multi-angle testing of tablet friability through the synergistic action of the friability testing device 1 and the testing angle adjustment component 2. In the basic embodiment, a dual-shaft drive motor is installed inside the body 11 of the friability testing device 1. Its output shaft is fixedly connected to the inner end face of the detection drum 13 via a coupling, driving the detection drum 13 to rotate synchronously. A baffle 14 is fixed inside the detection drum 13, and a screw 17 is provided on the outer side wall, penetrating the drum cover 15. By screwing the internal threaded sleeve 16, the drum cover 15 is pushed to fit tightly against the detection drum 13, forming a closed testing chamber. Support feet 18 are installed at the four corners of the bottom of the body 11 to ensure stable operation of the equipment. The rear side of the column 21 of the testing angle adjustment component 2 forms a triangular structure through the support rod, and a silicone pad is attached to the bottom counterweight plate 213 to enhance the stability of the equipment. A rotating column 28 is fixed in the middle of the front end of the column 21, penetrating the central area of ​​the arc-shaped angle ruler 24 to achieve circumferential rotation of the angle ruler 24. The rear end of the pointing screw 22 is screwed into the threaded hole on the front side of the column 21. A rubber gasket is fitted on the outer ring. The pointing angle of the arc-shaped angle ruler 24 is adjusted by screwing, and the angle value is marked on its surface.

[0027] In Embodiment 1, the bottom of the arc-shaped angle ruler 24 is fixedly connected to the support plate 29 via a base plate 212, and two locking screws 25 are screwed through the interior of the base plate 212. A slide rail 211 is formed on the upper surface of the support plate 29, and two sliders 210 are slidably arranged inside. Threaded holes are provided at the top of each slider 210. When the arc-shaped angle ruler 24 rotates to the target angle, the sliders 210 are slid along the slide rail 211 to a position aligned with the base plate 212, and the locking screws 25 are screwed so that their bottom sections are screwed into the threaded holes inside the sliders 210, achieving double locking of the angle ruler. A circular hole is formed inside the connecting block 26 for the rotating shaft 27 to pass through. A limiting block with a diameter larger than the inner diameter of the circular hole is fixed to the front end of the rotating shaft 27, and the rear end is fixedly connected to the right side of the front surface of the machine body 11, ensuring stable rotation of the support plate 29 around the rotating shaft 27.

[0028] In Example 2, for specific testing needs, the damping characteristics of the column 21 can be changed by adjusting the thickness or material of the silicone pad of the counterweight plate 213 to adapt to the testing stability requirements under different environments. Simultaneously, in the assembly of the test drum 13 and the drum cover 15, a combination of lead screws 17 with different pitches and internally threaded sleeves 16 is used to achieve graded adjustment of the clamping force of the drum cover 15, meeting the needs of different tablet brittleness testing scenarios.

[0029] In Embodiment 3, the angle adjustment accuracy is further optimized by installing a fine-tuning device inside the arc-shaped groove 23 of the arc-shaped angle ruler 24. By adjusting the screw depth of the pointing screw 22, angle fine-tuning at the 0.5° level can be achieved. In addition, a torque sensor is added at the connection between the drive motor and the detection drum 13 inside the machine body 11 to monitor changes in transmission torque in real time and assist in judging abnormal states during the tablet friability test.

[0030] In Embodiment 4, for batch testing scenarios, a quick-detachable wheel drum cover 15 structure is designed. A snap-fit ​​connection is used instead of the screw rod 17 and the internal threaded sleeve 16, shortening the assembly and disassembly time of the wheel drum cover 15. At the same time, a spring positioning pin is added in the slide 211 of the support plate 29, which cooperates with the positioning hole on the side of the slider 210 to achieve the anti-loosening function after the angle is locked.

[0031] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows:

[0032] Before starting the equipment, check whether the bottom support feet 18 of the friability testing equipment 1 are placed stably, and confirm that the drum cover 15 on the outside of the testing drum 13 has been tightened and closed by the screw 17 and the internal threaded sleeve 16 to form a closed cavity. The dual-shaft drive motor inside the machine body 11 drives the testing drum 13 to a ready-to-rotate state through the coupling. Place the tablet sample to be tested into the test cavity formed by the testing drum 13 and the drum cover 15. After closing the drum cover 15, start the drive motor. The testing drum 13 rotates synchronously, causing the tablet sample to tumble and collide under the action of the baffle 14, simulating the friability process. During the test, observe the operation status of the drive motor and the smoothness of the rotation of the testing drum 13, and record the breakage of the tablet sample.

[0033] When conducting multi-angle testing, first loosen the two locking screws 25 on the base plate 212, allowing the slider 210 to slide freely within the slide rail 211 of the support plate 29, thus releasing the lock on the arc-shaped angle ruler 24. Manually rotate the arc-shaped angle ruler 24 circumferentially around the rotating column 28 at the front end of the column 21. Adjust the pointing angle of the angle ruler 24 by the screwing depth of the rear end of the pointing screw 22 in the threaded hole above the front side of the column 21, and determine the target angle by referring to the angle value marked on its surface. After adjustment, slide the slider 210 along the slide rail 211 to the position aligned with the base plate 212, and tighten the locking screw 25 so that its bottom section screws into the threaded hole inside the slider 210, fixing the position of the arc-shaped angle ruler 24. At this time, the support plate 29 is connected to the rotating shaft 27 through the round hole inside the connecting block 26, causing the body 11 of the brittleness testing device 1 to rotate synchronously around the rear end of the rotating shaft 27 to the set angle, completing the preparation for multi-angle testing. After the test, turn off the drive motor, loosen the internal threaded sleeve 16 to unscrew the screw 17, and open the drum cover 15 to remove the residual tablet sample. If it is necessary to change the test angle, repeat the above angle adjustment steps, reload the sample, and start the equipment for the next round of testing. During routine maintenance, check the stability of the triangular structure of the rear support rod of the column 21, confirm the adhesion of the silicone pad at the bottom of the counterweight plate 213, and clean the debris inside the test drum 13 and the surface of the baffle 14.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tablet friability tester, comprising a friability testing device (1), characterized in that: The brittleness testing device (1) is provided with a test angle adjustment component (2) on its right front side; The brittleness testing device (1) includes an organic body (11), a detection drum (13) rotatably arranged on the left and right sides of the body (11), and a drum cover (15) screwed on the outer end face of the detection drum (13). A baffle (14) is fixedly connected inside the detection drum (13). The test angle adjustment component (2) includes a column (21), an arc-shaped angle ruler plate (24) rotatably disposed on the front side of the column (21), and a support plate (29) fixed on the lower surface of the arc-shaped angle ruler plate (24). The arc-shaped angle ruler plate (24) is provided with an arc-shaped slide groove (23) inside, and a pointing screw (22) is movably disposed inside the arc-shaped slide groove (23). The rear end of the pointing screw (22) is screwed into the interior of the column (21). A connecting block (26) is fixedly connected to the left end of the support plate (29). A rotating shaft (27) runs through and rotates inside the connecting block (26). The rear end of the rotating shaft (27) is fixedly connected to the right side of the front surface of the body (11).

2. The tablet friability tester according to claim 1, characterized in that: A support rod is fixed on the rear surface of the column (21), forming a triangular structure between the support rod and the column (21). A counterweight plate (213) is fixedly connected to the bottom of both the column (21) and the support rod. A layer of silicone pad is fixed to the bottom surface of the counterweight plate (213) with glue.

3. The tablet friability tester according to claim 1, characterized in that: A rotating column (28) is fixedly connected to the middle section of the front end of the column (21) and passes through the central area inside the arc-shaped angle ruler plate (24).

4. The tablet friability tester according to claim 1, characterized in that: The column (21) has a threaded hole on the upper front side for the rear end of the pointing screw (22) to be screwed in. The outer ring of the pointing screw (22) is fitted with a rubber gasket, and the rear surface of the rubber gasket is in contact with the front end face of the arc-shaped angle ruler plate (24).

5. A tablet friability tester according to claim 1, characterized in that: Angle values ​​are provided on the surface of the arc-shaped angle ruler (24), and a base plate (212) is fixedly connected to the bottom surface of the arc-shaped angle ruler (24). Two locking screws (25) are screwed through the inside of the base plate (212).

6. The tablet friability tester according to claim 1, characterized in that: The upper surface of the support plate (29) is provided with a slide (211), and two sliders (210) are slidably arranged inside the slide (211). The top surface of each slider (210) is provided with a threaded hole.

7. A tablet friability tester according to claim 5, characterized in that: The bottom section of the locking screw (25) is screwed into the threaded hole inside the slider (210).

8. The tablet friability tester according to claim 1, characterized in that: The connecting block (26) has a circular hole inside for the rotating shaft (27) to pass through and rotate. A limit block is fixed at the front end of the rotating shaft (27), and the diameter of the limit block is larger than the inner diameter of the circular hole.

9. A tablet friability tester according to claim 1, characterized in that: The machine body (11) is equipped with a dual-shaft drive motor. The output shafts of the drive motors are fixedly connected to the inner end face of the detection drum (13) via a coupling.

10. A tablet friability tester according to claim 1, characterized in that: The outer sidewall of the detection drum (13) is fixed with a lead screw (17) that passes through the drum cover (15), and the outer ring of the lead screw (17) is screwed with an internal thread sleeve (16) for pushing and tightening the drum cover (15) to contact the detection drum (13). The bottom surface of the machine body (11) is equipped with support feet (18) at the four corners.

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