CN108918316B - Calibrating device for tablet hardness tester - Google Patents
Calibrating device for tablet hardness tester Download PDFInfo
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- CN108918316B CN108918316B CN201811108096.8A CN201811108096A CN108918316B CN 108918316 B CN108918316 B CN 108918316B CN 201811108096 A CN201811108096 A CN 201811108096A CN 108918316 B CN108918316 B CN 108918316B
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- pressure sensor
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- 230000009021 linear effect Effects 0.000 claims abstract description 13
- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000003814 drug Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/62—Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to a calibrating device for a tablet hardness tester, which comprises a device frame with supporting legs, wherein the device frame comprises a cross arm, a counter force arm which is vertical to the cross arm or is obliquely arranged on the cross arm and is used for extending to the front side of a pressure sensor of the tablet hardness tester when in use, a sensor contact structure which is used for being in contact with the pressure sensor is arranged at the lower end of the counter force arm, a power loading mechanism is also arranged on the device frame, the power loading mechanism comprises a linear motion loading end which can output linear motion in the front-back direction, the linear motion loading end is arranged at the rear side of the contact structure at intervals and is used for pushing the rear end of the pressure sensor, and a calibrating force value sensor is arranged on the linear motion loading end in series. The invention provides a calibrating device for a tablet hardness tester, which can calibrate a pressure sensor in the tablet hardness tester without detaching the pressure sensor.
Description
Technical Field
The invention relates to a calibrating device for a tablet hardness tester in the calibrating field.
Background
The quality of the medicine directly endangers the life and health of the patient. And tablets are one of the most commonly used dosage forms in medicine. In the chinese pharmacopoeia, the tablet should have a suitable hardness for complete formation, whereas the hardness and diameter of the tablet itself need to be measured by a corresponding tablet hardness tester. The existing tablet hardness tester is like a tablet hardness tester disclosed in Chinese patent CN201897556U, and comprises a bracket, a medicine supporting plate and a pressure head, wherein the pressure head can move forwards and backwards under the drive of a driving mechanism, a displacement sensor for detecting the moving distance of the pressure head is arranged on the bracket, and a pressure sensor is arranged on the front side of the pressure head on the bracket.
When the tablet hardness tester is used, a tablet is placed on the tablet supporting plate, the tablet can be placed at the tablet supporting plate, so that the tablet supporting plate is also called a medicine box, when the tablet hardness tester works, the driving mechanism drives the pressure head to move forwards, the pressure head drives the tablet to move towards the pressure sensor, when the tablet touches the pressure sensor, the displacement sensor senses the diameter of the tablet, the pressure head extrudes the tablet until the tablet is broken, and the pressure sensor senses the hardness of the tablet.
The relevant national standard prescribes that the pressure sensor in the tablet hardness tester needs to be calibrated regularly to ensure that the tablet hardness tester measures the tablet hardness accurately. In the prior art, when calibrating the pressure sensor, the pressure sensor is troublesome, equipment is required to be disassembled, the pressure sensor is taken out, then the pressure sensor is vertically placed on the platform, standard weights are applied to perform single-point calibration, the workload is tedious and huge, time and labor are wasted, the daily calibration efficiency is seriously influenced, and the tablet hardness testers of some models are more difficult and heavy due to high integration level.
Disclosure of Invention
The invention aims to provide a tablet hardness tester calibration device which can calibrate a pressure sensor in a tablet hardness tester without detaching the pressure sensor.
In order to solve the technical problems, the technical scheme of the invention is as follows:
The utility model provides a tablet is calibrating device for hardness tester, includes the device frame that has the landing leg, and the device frame includes the xarm, set firmly on the xarm with the xarm perpendicular or the reaction arm of slope arrangement during the use be used for stretching to tablet hardness tester's pressure sensor front side, the lower extreme of reaction arm be provided with be used for with the sensor contact structure of pressure sensor contact still is provided with power loading mechanism on the device frame, power loading mechanism including the straight line action loading end that can export fore-and-aft direction rectilinear motion, straight line action loading end interval arrange in contact structure's rear side and be used for the top pressure sensor's rear end, the cluster is equipped with calibration and is hard to the load end.
The landing leg comprises a front landing leg and a rear landing leg with adjustable height, and the cross arm is provided with a level device.
The rear end of the cross arm is fixed with an installing seat which is arranged in parallel with the counter-force arm, the power mechanism comprises a motor which is fixed on the cross arm, the power mechanism further comprises a screw rod screw mechanism, the axis of the screw rod screw mechanism extends along the front-back direction, a screw rod in the screw rod screw mechanism is rotationally assembled on the installing seat, a screw rod in the screw rod screw mechanism is guided and movably assembled on the installing seat along the front-back direction, the screw rod is in anti-rotation fit with the installing seat, a motor shaft of the motor is in transmission connection with the screw rod, and the screw rod forms the linear action loading end.
The calibration force value sensor is fixed at the front end of the screw rod.
The motor is fixed on the upper side of the cross arm, the axis of a motor shaft of the motor is arranged in parallel with the axis of the screw nut, and the motor shaft is positioned right above the screw rod.
A motor shaft driving wheel is fixed on the motor shaft, and a driving belt for realizing the driving of the motor to the screw is wound around the motor shaft driving wheel and the screw.
And the cross arm is provided with a transmission belt avoiding hole for the transmission belt to pass through in the up-down direction.
The mounting seat comprises a front support and a rear support which are arranged at intervals from front to back, a transmission belt avoiding gap is formed between the front support and the rear support, and two sections of nuts are respectively assembled on the front support and the rear support in a rotating mode.
The landing leg is including setting up the back landing leg on preceding support or back support, back landing leg include with corresponding support bottom threaded connection's altitude mixture control pole, the landing leg still include with the preceding landing leg of xarm threaded connection, preceding landing leg is located the rear side of reaction arm, the bottom of preceding landing leg have be used for with pressure sensor upper end contact's pressure sensor contact portion, be provided with the level gauge on the xarm.
The sensor contact structure comprises a tablet-shaped pressing head arranged at the rear side of the counter force arm, and the tablet-shaped pressing head is provided with an arc-shaped pressing surface for pressing the pressure sensor.
The beneficial effects of the invention are as follows: according to the invention, a counter force arm which can extend to the front side of the pressure sensor from top to bottom is designed aiming at the problem of narrow position of a medicine chest of the tablet hardness tester, the back end of the pressure sensor is recorded by a linear action loading end of the power loading mechanism, the pressure sensor is pressed by a sensor contact structure under the counter force, the pressure sensor of the tablet hardness tester is calibrated by the reading of a calibration force value sensor on the linear action loading end, the pressure sensor is not required to be detached from the tablet hardness tester, and the calibration of the pressure sensor on the tablet hardness tester is convenient and quick.
Drawings
FIG. 1 is a state of use diagram of one embodiment of the present invention;
FIG. 2 is a top view of the tablet durometer calibration device of FIG. 1;
fig. 3 is a schematic diagram showing the cooperation of the screw and the calibration effort sensor in fig. 1.
Detailed Description
An embodiment of a calibration device for a tablet hardness tester is shown in fig. 1 to 3: including the device frame that has the landing leg, the device frame includes the xarm 3 that length along fore-and-aft direction extends, the front end of xarm 3 is fixed with the xarm be used for stretching to the counter-force arm 19 of tablet sclerometer front side when using, the lower extreme of counter-force arm 19 is provided with the sensor contact structure that is used for with the contact of pressure sensor front end, in this embodiment, the sensor contact structure is for setting up in the tablet roof pressure head 14 of counter-force arm rear side, tablet roof pressure head has the arc roof pressure face that is used for roof pressure sensor, like this true tablet, can simulate more true service environment. The front end of the cross arm is provided with an observation hole 21 penetrating in the up-down direction at the rear side of the reaction arm.
The rear end of the cross arm 3 is fixedly provided with a mounting seat which is arranged in parallel with the counter-force arm, the mounting seat comprises a front support 15 and a rear support 4 which are arranged at intervals from front to back, the device frame is further provided with a power loading mechanism, the power loading mechanism comprises a screw nut mechanism and a motor 1 which is fixed on the upper side of the cross arm, the screw nut mechanism comprises a screw nut 8 and a screw nut 6, the axes of the screw nut mechanism extend along the front and rear directions, two ends of the screw nut are respectively assembled on the front support 15 and the rear support 4 through bearings 9 in a rotating mode, the upper end of the screw nut is provided with a guide groove 10 extending along the front and rear directions, the front support and the rear support are provided with guide plates 5, the lower ends of the guide grooves are adaptively inserted into the guide grooves, rotation of the screw nut is limited, the guide plates are fixed on the corresponding supports through screws, and the guide plates on two opposite sides of the front support and the rear support are matched with the guide grooves in a guiding movement mode. When the screw nut rotates, the screw nut can drive the screw rod 6 to translate in the front-back direction, so that the screw rod forms a linear action loading end of the power mechanism, the front end of the screw rod is fixedly provided with a calibration force value sensor 11, the screw rod is connected with the calibration force value sensor through threads, the front end of the calibration force value sensor is connected with a jacking head 12 through threads, and the jacking head is used for jacking and pressing the rear end of the pressure sensor.
The motor shaft of the motor 1 is arranged in parallel with the screw rod, the motor shaft is positioned right above the screw rod, the rear end of the motor shaft is coaxially fixed with a motor shaft driving wheel 2, and a driving belt (not shown in the figure) for realizing the driving of the motor to the screw nut is wound around the periphery of the motor shaft driving wheel and the screw nut, and the driving belt is a toothed driving belt. The cross arm is provided with a driving belt avoiding hole 20 for the driving belt to pass through in the up-down direction, and a driving belt avoiding gap is formed between the front support and the rear support. The device frame further comprises support legs, each support leg comprises a rear support leg 7 arranged on the rear support seat, each rear support leg comprises a height adjusting rod in threaded connection with the bottom of the corresponding rear support seat, each support leg further comprises a front support leg 18 in threaded connection with the front end of the cross arm, each front support leg is located on the rear side of the corresponding counter arm, each front support leg is provided with a pressure sensor contact part for being in contact with the upper end of the corresponding pressure sensor, the top of each front support leg is provided with a front support leg adjusting rod 17 perpendicular to the corresponding front support leg, each front support leg adjusting rod is located on the upper side of the cross arm, and a level 16 is arranged on the cross arm.
When the tablet hardness tester is used, the front supporting leg is placed on the pressure sensor, the rear supporting leg is placed on the tabletop, the counter-force arm stretches into the medicine chest, the counter-force arm is located at the front side of the pressure sensor, the arc-shaped jacking surface of the tablet-shaped jacking head is in contact with the front end of the pressure sensor, the height of the front supporting leg and the height of the rear supporting leg are adjusted, the cross arm is adjusted to be horizontal, the stress direction of the pressure sensor can be guaranteed to be the front-back direction, the accuracy of the numerical value is guaranteed, the motor drives the screw to rotate, the screw drives the screw to forward translate to jack the rear end of the pressure sensor, the counter-force arm jacks the front end of the pressure sensor, and the reading of the tablet hardness tester is calibrated with the pressure sensor of the tablet hardness tester through the calibration force value sensor. The front supporting leg is supported on the pressure sensor, so that the supporting stability is improved, the use space requirement of the calibrating device can be reduced, and in other embodiments of the invention: the front support leg can also be not supported on the pressure sensor, for example, on the corresponding tabletop, the structures of the front support leg and the rear support leg can be consistent, and the heights of the front support leg and the rear support leg can not be adjusted at the moment; the motor and the nut can be in transmission connection through a gear; the power mechanism can also be a power mechanism which can output linear motion, such as an electric push rod, a driving cylinder and the like; the pressing head and the calibration force value sensor can be welded or integrally arranged; the tablet-shaped top head may also be of a square configuration.
Claims (1)
1. A calibrating device for a tablet hardness tester, characterized in that: the device comprises a device frame with supporting legs, wherein the device frame comprises a cross arm, a counter-force arm which is perpendicular to the cross arm or obliquely arranged and is used for extending to the front side of a pressure sensor of a tablet hardness tester when in use is fixedly arranged on the cross arm, the lower end of the counter-force arm is provided with a sensor contact structure which is used for being in contact with the pressure sensor, the device frame is also provided with a power loading mechanism, the power loading mechanism comprises a linear motion loading end which can output linear motion in the front-back direction, the linear motion loading end is arranged at the rear side of the contact structure at intervals and is used for pushing the rear end of the pressure sensor, a calibration force value sensor is arranged on the linear motion loading end in series, the supporting legs comprise front supporting legs and rear supporting legs which are adjustable in height, a level gauge is arranged on the cross arm, the rear end of the cross arm is fixedly provided with a mounting seat which is parallel to the counter-force arm, the power loading mechanism comprises a motor fixed on the cross arm, the power loading mechanism also comprises a lead screw mechanism with an axis extending in the front-back direction, a nut rotating and is assembled on the mounting seat, the nut in the lead screw mechanism is rotatably mounted on the motor, the motor is arranged on the motor shaft is arranged on the front side of the motor shaft in the front of the contact structure along the front-back direction, the lead screw is fixedly arranged on the lead screw seat, the lead screw is fixedly arranged on the front end is parallel to the lead screw, the lead screw is fixedly arranged on the driving wheel and the lead screw, the lead screw is fixedly arranged on the lead screw and the lead screw has a driving wheel and the driving device is fixed on the driving seat, the cross arm is provided with a transmission belt avoiding hole for the transmission belt to pass through in the up-down direction, the mounting seat comprises a front support seat and a rear support seat which are arranged at intervals, a transmission belt avoiding gap is formed between the front support seat and the rear support seat, two sections of nuts are respectively assembled on the front support seat and the rear support seat in a rotating mode, the support legs comprise rear support legs arranged on the front support seat or the rear support seat, the rear support legs comprise height adjusting rods in threaded connection with the bottoms of the corresponding support seats, the support legs further comprise front support legs in threaded connection with the cross arm, the front support legs are located at the rear side of the counter arm, the bottoms of the front support legs are provided with pressure sensor contact parts for contacting with the upper end of the pressure sensor, the cross arm is provided with a level gauge, the sensor contact structure comprises a tablet-shaped pressing head arranged at the rear side of the counter arm, and the tablet-shaped pressing head is provided with an arc-shaped pressing surface for pressing the pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108096.8A CN108918316B (en) | 2018-09-21 | 2018-09-21 | Calibrating device for tablet hardness tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108096.8A CN108918316B (en) | 2018-09-21 | 2018-09-21 | Calibrating device for tablet hardness tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108918316A CN108918316A (en) | 2018-11-30 |
| CN108918316B true CN108918316B (en) | 2024-08-02 |
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ID=64409369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811108096.8A Active CN108918316B (en) | 2018-09-21 | 2018-09-21 | Calibrating device for tablet hardness tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN108918316B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209198246U (en) * | 2018-09-21 | 2019-08-02 | 河南省计量科学研究院 | Tablet hardness instrument calibrating installation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2612428B2 (en) * | 1994-12-07 | 1997-05-21 | 株式会社菊水製作所 | Calibration device for hardness tester |
| CN201897556U (en) * | 2010-11-24 | 2011-07-13 | 天津市天大天发科技有限公司 | Tablet hardness instrument |
| DE202012005821U1 (en) * | 2012-06-15 | 2012-07-04 | Pharmatron Ag | Device for calibrating and testing a tablet test device |
| CN105699228A (en) * | 2016-03-08 | 2016-06-22 | 苏州天键衡电子信息科技有限公司 | Intelligent hardness testing device |
| CN207675569U (en) * | 2017-11-07 | 2018-07-31 | 北京天衡药物研究院南阳天衡制药厂 | It is a kind of to put medicine and the intelligent tablet hardness instrument of cleaning automatically |
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2018
- 2018-09-21 CN CN201811108096.8A patent/CN108918316B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209198246U (en) * | 2018-09-21 | 2019-08-02 | 河南省计量科学研究院 | Tablet hardness instrument calibrating installation |
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| CN108918316A (en) | 2018-11-30 |
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Country or region after: China Address after: No. 10 Baifo Road, Guancheng District, Zhengzhou City, Henan Province, 450000 Applicant after: Henan Institute of Metrology and Testing Science Address before: 450008 No. 21, Huayuan Road, Henan, Zhengzhou Applicant before: HENAN PROVINCE INSTITUTE OF METROLOGY Country or region before: China |
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