Tablet hardness tester
By introducing a tablet fixing component and a collection box into the tablet hardness tester, the problems of tablets not being securely fixed and fragments being difficult to clean up during the test are solved, ensuring the accuracy and safety of the test results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-03-10
AI Technical Summary
Existing tablet hardness testers suffer from problems such as unstable tablet fixation, inaccurate test results, inconvenient fragment cleaning, easy tablet residue in the indenter material, and lack of shielding in the test slot, which affect the accuracy and safety of the test.
A tablet hardness tester was designed, comprising a tablet fixing component and a collection box. The tablet top is fixed by a pressure plate to prevent displacement, and fragments are collected in the collection box. A stainless steel pressure head and a leveling device are used to ensure the accuracy of test results and the easy removal of fragments.
It achieves stable clamping of tablets, prevents fragments from splashing, improves the accuracy of test results, facilitates fragment collection and cleaning, and reduces safety risks.
Smart Images
Figure CN223985927U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of medicine or health food testing, in particular to a tablet hardness tester. BACKGROUND
[0002] At present, according to the definition of tablet in 2020 edition of Chinese Pharmacopoeia: it refers to the raw material medicine or with suitable auxiliary material made of round or special-shaped tablet solid preparation. And points out that the appearance of tablet should be complete and smooth, uniform in color, have suitable hardness and wear resistance, so as to avoid abrasion or breakage in the process of packaging and transportation. The hardness of tablet not only relates to the smooth degree of tablet in production, but also relates to the quality state in the hand of consumer, improper hardness control may cause subsequent product quality problems.
[0003] The hardness of tablet refers to the pressure intensity that produces enough pressure between two pressure discs in a certain plane to make the tablet break, and the force value or mass value is generally used to quantitatively evaluate the hardness of tablet. Figure 1 As shown in the formula, the existing tablet hardness tester mainly includes a machine body 1, the machine body is provided with a test groove 11, a tablet placing rod 12 and a movable pressure head 13, the tablet placing rod 12 is fixed in the test groove 11, one end of the tablet placing rod 12 is provided with a fixed pressure head 14, one end of the movable pressure head 13 is slidably arranged above the end of the tablet placing rod 12 away from the fixed pressure head 14, and there is a gap between the movable pressure head 13 and the fixed pressure head 14 to form a tablet placing groove 15, the machine body is also provided with a driving mechanism, a pressure sensor and a display screen, according to the driving mode of the driving mechanism, the tablet tester can be divided into manual type, semi-automatic type and full-automatic type, the driving mechanism of the manual type tablet hardness tester generally includes a hand wheel arranged on one side of the machine body and a screw nut pair arranged in the machine body, the hand wheel is connected with the movable pressure head through the screw nut pair, and the movable pressure head can be driven to move towards or away from the fixed pressure head by rotating the hand wheel; during testing, the tablet is first placed in the tablet placing groove, then the movable pressure head is driven to move towards the fixed pressure head by the driving mechanism, and the movable pressure head and the fixed pressure head cooperate to press the tablet, at this time, the pressure sensor can detect the pressure of the movable pressure head on the tablet and display it on the display screen, when the tablet is cracked, the display screen will display the maximum force value in the pressing process, which is the hardness of the tablet.
[0004] The tablet hardness tester is simple in operation, but some problems still exist in actual use, which are shown in the following aspects: 1. Tablets cannot be well fixed, which causes inaccurate hardness values in the testing process, for example, for some special-shaped tablets or double convex tablets, the tablets are easily moved to form false hardness values in the process that the movable pressure head approaches, and at this time, the tablets have not been broken; 2. There is no horizontal adjusting device, which interferes with the stress point of the tablet and causes inaccurate results; 3. There is no tablet collecting device, and there is a cleaning dead angle in the structure; 4. The surface of the pressure head is generally made of plastic material, and the tablet is easily left on the surface, which increases the friction between the pressure head and the tablet and affects the test value, and the tablet is not easy to clean; 5. The test slot is not shielded, and the tablet is easy to break out when being pressed, which has the risk of hurting people and is not conducive to collecting the broken tablets and cleaning. Practical new type content
[0005] The technical problem to be solved by the present application is to provide a tablet hardness tester which can fix tablets, ensure the accuracy of test results, and facilitate the collection of residual tablets and cleaning.
[0006] In order to solve the above technical problems, the present application provides a tablet hardness tester, which comprises a machine body, a test slot, a tablet placing rod and a movable pressure head, the tablet placing rod is fixed in the test slot, one end of the tablet placing rod is provided with a fixed pressure head, one end of the movable pressure head is slidably arranged above the end of the tablet placing rod away from the fixed pressure head, and there is a gap between the movable pressure head and the fixed pressure head to form a tablet placing slot, generally, the movable pressure head is arranged on the tablet placing rod, the present tester further comprises a collecting box and a tablet fixing assembly, the front side of the test slot is open, the collecting box is arranged in the test slot, the tablet placing rod and the movable pressure head respectively extend into the collecting box, and the tablet placing slot is located in the collecting box, the top of the collecting box is open, the tablet fixing assembly comprises a connecting seat and a pressing plate, the connecting seat is mounted on the inner side wall of the collecting box, one end of the connecting seat is rotatably connected with the pressing plate, and the other end of the pressing plate is arranged above the tablet placing slot.
[0007] As a preferred scheme of the present application, the tablet fixing assembly further comprises a connecting plate, one end of the connecting seat is rotatably connected with the connecting plate, and the other end of the pressing plate is rotatably connected with one end of the pressing plate.
[0008] In a preferred embodiment of this utility model, the end of the plate-placement rod near the fixed pressure head is fixedly connected to the left side wall of the test groove, and the end of the movable pressure head away from the fixed pressure head is slidably mounted on the right side wall of the test groove. The collection box includes a bottom plate, a left side plate, a right side plate, a front baffle, and a rear baffle. The left side plate and the right side plate are respectively fixedly connected to the bottom plate. The top surface of the left side plate is lower than the bottom surface of the plate-placement rod, and the top surface of the right side plate is lower than the top surface of the movable pressure head. The front baffle and the rear baffle are respectively detachably mounted on the bottom plate, and the top surfaces of the front baffle and the rear baffle are higher than the top surface of the movable pressure head.
[0009] As a preferred embodiment of this utility model, the length of the test slot is the same as the length of the collection box.
[0010] As a preferred embodiment of this utility model, the connecting seat is installed on the top of the inner side of the front baffle or the rear baffle.
[0011] As a preferred embodiment of this utility model, the front end of the left side plate and the front end of the right side plate are respectively provided with front stops, the rear end of the left side plate and the rear end of the right side plate are respectively provided with rear stops, and the bottom plate is provided with two L-shaped fixing blocks, each fixing block including a vertical part and a horizontal part, the horizontal part being fixed to the bottom plate. The front side of the front stop abuts against the two front stops, the rear side of the front stop abuts against the vertical part of one of the fixing blocks, the rear side of the rear stop abuts against the two rear stops, and the front side of the rear stop abuts against the vertical part of the other fixing block.
[0012] As a preferred embodiment of this utility model, the bottom of the machine body is provided with a support foot that can adjust the height, and the top of the fixed pressure head is provided with a level.
[0013] As a preferred embodiment of this utility model, a detachable storage box is provided on one side of the body.
[0014] As a preferred embodiment of this utility model, the fixed pressure head and the movable pressure head are made of stainless steel.
[0015] This invention discloses a tablet hardness tester. Compared with the prior art, its advantages are as follows: During testing, the position of the pressure plate is adjusted by rotating it so that the pressure plate presses against the top of the tablet, which can fix the tablet and prevent the tablet from shifting when it is clamped, thus affecting the test results. At the same time, since the pressure plate is located above the tablet, it can prevent fragments from flying upwards when the tablet is cracked. And since the tablet slot is located in the collection box, it can prevent fragments from flying out of the test slot, which facilitates the collection and cleaning of fragments. Attached Figure Description
[0016] Figure 1 This is a structural diagram of an existing tablet hardness tester;
[0017] Figure 2 This is a schematic diagram of the structure of this utility model without the front baffle;
[0018] Figure 3 This is a structural diagram of the body of this utility model;
[0019] Figure 4 This is a structural diagram of the collection box of this utility model;
[0020] Figure 5 This is a schematic diagram of the connection structure between the front baffle and the bottom plate of this utility model;
[0021] Figure 6 This is a structural diagram of the fixing block of this utility model;
[0022] Figure 7 This is a structural diagram of the tablet fixing assembly of this utility model;
[0023] Figure 8 This is a simplified schematic diagram illustrating the rotation between the tablets fixed in this utility model.
[0024] In the diagram, 1. Body; 11. Test slot; 12. Tablet holder; 13. Movable pressure head; 14. Fixed pressure head; 15. Tablet slot; 16. Support foot; 2. Collection box; 21. Base plate; 22. Left side plate; 23. Right side plate; 24. Front baffle; 25. Rear baffle; 26. Front stop block; 27. Rear stop block; 28. Fixing block; 281. Vertical part; 282. Horizontal part; 3. Tablet fixing assembly; 31. Connecting seat; 32. Pressure plate; 33. Connecting plate; 4. Level; 5. Storage box. Detailed Implementation
[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] like Figures 2-8 As shown, a preferred embodiment of the tablet hardness tester of this utility model includes a body 1. The body 1 is provided with a test groove 11, a tablet placement rod 12, and a movable pressure head 13. The tablet placement rod 12 is fixed in the test groove 11. One end of the tablet placement rod 12 is provided with a fixed pressure head 14. One end of the movable pressure head 13 is slidably disposed above the end of the tablet placement rod 12 away from the fixed pressure head 14, and there is a gap between the movable pressure head 13 and the fixed pressure head 14 to form a tablet placement groove 15 for placing tablets. The tester also includes a collection box 2 and a tablet fixing assembly 3. The front side of the test groove 11 is open. The collection box 2 is provided in the test groove 11. The tablet placement rod 12 and the movable pressure head 13 extend into the collection box 2 respectively, and the tablet placement groove 15 is located in the collection box 2. The top of the collection box 2 is open. The tablet fixing assembly 3 includes a connecting seat 31 and a pressure plate 32. The connecting seat 31 is installed on the inner side wall of the collection box 2. The connecting seat 31 is rotatably connected to one end of the pressure plate 32, and the other end of the pressure plate 32 is disposed above the tablet placement groove 15.
[0028] The working principle of this embodiment is as follows: First, the tablet is placed in the tablet placement slot 15, and the tablet is pressed tightly against the fixed pressure head 14. Then, the position of the pressure plate 32 is rotated and adjusted so that the pressure plate 32 presses against the top of the tablet. Then, the movable pressure head 13 is controlled to move closer to the fixed pressure head 14, so that the movable pressure head 13 and the fixed pressure head 14 cooperate to clamp the tablet. At this time, since the pressure plate 32 presses against the top of the tablet, it can fix the tablet, thereby preventing the tablet from shifting when it is clamped and affecting the test results. It should be noted that the force of the pressure plate 32 on the tablet mainly relies on the weight of the pressure plate 32. This force is not too large and will not interfere with the test results. When the tablet is cracked and compressed, resulting in an increase in thickness, the pressure plate 32 will move upward in accordance with the change. At the same time, since the pressure plate 32 is located above the tablet, it can prevent fragments from flying upward when the tablet is cracked. Since the tablet placement slot 15 is located in the collection box 2, it can prevent fragments from flying out of the test slot 11, which facilitates the collection and cleaning of fragments.
[0029] For example, the tablet fixing assembly 3 further includes a connecting plate 33, with the connecting seat 31 rotatably connected to one end of the connecting plate 33, and the other end of the pressure plate 32 rotatably connected to one end of the pressure plate 32, such as... Figure 8 As shown, the pressure plate 32 can be horizontally pressed against the top of the tablet, effectively preventing the tablet from shifting when it is clamped.
[0030] For example, one end of the plate-placement rod 12 near the fixed pressure head 14 is fixedly connected to the left side wall of the test chamber 11, and the other end of the movable pressure head 13 away from the fixed pressure head 14 is slidably mounted on the right side wall of the test chamber 11. The movable pressure head 13 passes through the right side wall of the test chamber 11 and is connected to the drive mechanism inside the machine body 1. The collection box 2 includes a bottom plate 21, a left side plate 22, a right side plate 23, a front baffle 24, and a rear baffle 25. The left side plate 22 and the right side plate 23 are fixedly connected to the bottom plate 21, respectively. The top surface of plate 22 is lower than the bottom surface of plate holder 12, and the top surface of right side plate 23 is lower than the top surface of movable pressure head 13. Front baffle 24 and rear baffle 25 are detachably mounted on base plate 21. The top surface of front baffle 24 and the top surface of rear baffle 25 are higher than the top surface of movable pressure head 13. After the front baffle 24 and rear baffle 25 are detached from base plate 21, the collection box 2 (with front baffle 24 and rear baffle 25 removed) can be taken out from the front of test slot 11, which makes it easier to clean the collection box 2.
[0031] For example, the length of the test slot 11 (i.e., the distance between the left and right walls of the test slot 11) is the same as the length of the collection box 2 (i.e., the distance between the left side of the left plate 22 and the right side of the right plate 23), which facilitates the positioning of the collection box 2.
[0032] For example, the connecting seat 31 is installed on the top of the inner side of the front baffle 24 or the rear baffle 25 (i.e. the rear side of the front baffle 24 or the front side of the rear baffle 25) to facilitate operation and to facilitate the pressing plate 32 to press against the tablet placed in the tablet slot 15. The bottom of the pressing plate 32 may be made of rubber and have stripes to prevent the tablet from moving.
[0033] For example, the front end of the left side plate 22 and the front end of the right side plate 23 are respectively provided with front stops 26, and the rear end of the left side plate 22 and the rear end of the right side plate 23 are respectively provided with rear stops 27. The bottom plate 21 is provided with two L-shaped fixing blocks 28, each fixing block 28 including a vertical part 281 and a horizontal part 282. The horizontal part 282 is fixed to the bottom plate 21. The front side of the front baffle 24 abuts against the two front stops 26, and the rear side of the front baffle 24 abuts against the vertical part of one of the fixing blocks 28. The rear side of the rear baffle 25 abuts against the two rear blocks 27 respectively, and the front side of the rear baffle 25 abuts against the vertical part 281 of another fixing block 28. The front block 26 and the fixing block 28 cooperate to position the front baffle 24, and the rear block 27 and the fixing block 28 cooperate to position the rear baffle 25. By pulling the front baffle 24 and the rear baffle 25 upward, they can be separated from the bottom plate 21, that is, the front baffle 24 and the rear baffle 25 are detachably connected to the bottom plate 21.
[0034] For example, the bottom of the body 1 is provided with height-adjustable support feet 16. Generally, there are four support feet 16 arranged in a rectangular shape. The top of the fixed pressure head 14 is provided with a level 4. It can be understood that the top surface of the fixed pressure head 14 is parallel to the top surface of the plate placement rod 12. By observing the level and adjusting the height of the support feet 16, the fixed pressure head 14 and the plate placement rod 12 can be kept in a horizontal state to ensure the accuracy of the test results.
[0035] For example, a detachable storage box 5 is provided on one side of the body 1. For example, the storage box 5 is attached to the body 1 by a magnet. The storage box 5 can hold commonly used tools such as tweezers and brushes.
[0036] For example, the fixed pressure head 14 and the movable pressure head 13 are made of stainless steel with a mirror-like smooth surface to ensure smooth operation. The stainless steel material can prevent acidic substances remaining in the sample from corroding the pressure head and is easy to clean.
[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.
Claims
1. A tablet hardness tester comprising a machine body, the machine body is provided with a test slot, a tablet placing rod and a movable pressure head, the tablet placing rod is fixed in the test slot, one end of the tablet placing rod is provided with a fixed pressure head, one end of the movable pressure head is slidably arranged above the end of the tablet placing rod away from the fixed pressure head, and there is a gap between the movable pressure head and the fixed pressure head to form a tablet placing slot, characterized in that: The test slot is provided with a collecting box, and the test slot is provided with a tablet fixing assembly. 2. The tablet hardness tester of claim 1, wherein: The tablet fixing assembly further comprises a connecting plate, one end of the connecting plate is rotatably connected with the connecting seat, and the other end of the connecting plate is rotatably connected with one end of the pressing plate.
3. The tablet hardness tester of claim 1, wherein: One end of the tablet placing rod close to the fixed pressing head is fixedly connected with the left side wall of the test slot, and the other end of the movable pressing head away from the fixed pressing head is slidably arranged on the right side wall of the test slot.
4. The tablet hardness tester of claim 3, wherein: The length of the test slot is consistent with the length of the collecting box.
5. The tablet hardness tester of claim 3, wherein: The connecting seat is arranged on the top of the inner side of the front baffle or the rear baffle.
6. The tablet hardness tester of claim 3, wherein: The front end of the left side plate and the front end of the right side plate are respectively provided with front stop blocks, the rear end of the left side plate and the rear end of the right side plate are respectively provided with rear stop blocks, two L-shaped fixing blocks are arranged on the bottom plate, the front side surface of the front baffle is abutted against two front stop blocks, the rear side surface of the front baffle is abutted against the vertical part of one of the fixing blocks, the rear side surface of the rear baffle is abutted against two rear stop blocks, and the front side surface of the rear baffle is abutted against the vertical part of the other fixing block.
7. The tablet hardness tester of claim 1, wherein: The bottom of the machine body is provided with a height-adjustable supporting leg, and the top of the fixed pressing head is provided with a level.
8. The tablet hardness tester of claim 1, wherein: One side of the machine body is provided with a detachable storage box.
9. The tablet hardness tester of claim 1, wherein: The fixed pressing head and the movable pressing head are made of stainless steel.