CN110361297A - A kind of rheometer - Google Patents
A kind of rheometer Download PDFInfo
- Publication number
- CN110361297A CN110361297A CN201810446945.4A CN201810446945A CN110361297A CN 110361297 A CN110361297 A CN 110361297A CN 201810446945 A CN201810446945 A CN 201810446945A CN 110361297 A CN110361297 A CN 110361297A
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- China
- Prior art keywords
- measuring part
- rheometer
- torque sensor
- normal force
- elastomer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
Abstract
The present invention provides a kind of rheometer, including the adjustable upper fixture of relative distance and lower fixture, the upper fixture includes the upper measuring part of support construction and installation on the support structure, the support construction includes normal force transducer, and the upper measuring part is fixedly mounted on the normal force transducer；The normal force transducer structural volume of rheometer of the present invention is big, intensity is big, has biggish rigidity, as a whole a part of support construction, install measuring part, and the normal force transducer detects sensitive, range ability 0-50N, to be suitable for the rheometer test to putty sample.
Description
Technical field
The present invention relates to material rheological behavior field, especially a kind of rheometer.
Background technique
Rotational rheometer is the important component in modern rheometer, they generate simple shear by rotary motion
Flowing, may be used to determine the rheological property of viscosity, elasticity of material etc..
Rheometer currently on the market has a large amount in variety, and wherein rotational rheometer is relatively suitble to coating industry, factory
Quotient is also relatively more, mainly has: water generation TA, Haake HAAKE, Bai Lifei Brookfield, Anton Paar Anton Paar, Malvern
Malvern etc., and the producer of domestic production rheometer is few, there are also biggish rooms for promotion for technology.
Now, it there are no the rheometer for being directed to putty sample design, during putty sample test, needs to putty sample
Product are heated or cooled, and temperature control system is provided on existing rheometer, and temperature control system is separated with the motor for driving fixture rotation
Setting avoids and in the same side the two is interfered the two setting, furthermore existing temperature control system usually uses water cooling
Mode radiate, the radiating mode of water cooling needs to introduce water pump, and external power supply case provides power, so that complicated integral structure
Burden.
In addition, normal force transducer and torque sensor are provided in existing rheometer equipment, external rheometer choosing
With the normal force transducer of small volume, which is arranged in air bearing, however because normal force senses
Device structure is smaller, can not be used to installs fixture, needs to support mounting structure by other, although detection accuracy is high, it is tied
Structure is complicated, higher cost.
Furthermore putty sample, in rheological experiment, because to imitate worker's work progress, rotary rpm is larger,
The test panel of fixture is designed to plane tabular structure under existing rheometer, and in high speed rotation, then putty sample is being centrifuged
Its edge is easily broken dispersion under power, directly influences the accuracy and repeatability of experimental result.
Finally, existing rheometer does not have Integration Design, it is often necessary to special setting power supply box and control cabinet, rheometer sheet
Body is separately connected power supply box and control cabinet, and power supply box provides power supply for rheometer, and control cabinet provides some control processes, however this
A little external structures make whole rheometer equipment become complex redundancy.
In view of this present invention is specifically proposed.
Summary of the invention
The technical problem to be solved in the present invention is that overcoming the deficiencies of the prior art and provide a kind of rheometer, normal force
Sensor structure volume is big, intensity is big, has biggish rigidity, a part of support construction, installs measurement portion as a whole
Part, and the normal force transducer detects sensitive, range ability 0-50N, to be suitable for the rheometer test to putty sample.
In order to solve the above technical problems, the basic conception of the technical solution adopted by the present invention is:
A kind of rheometer, including the adjustable upper fixture of relative distance and lower fixture, the upper fixture include support knot
The upper measuring part of structure and installation on the support structure, the support construction includes normal force transducer, the upper measurement
Component is fixedly mounted on the normal force transducer.
In the above scheme, normal force transducer structural volume is big, intensity is big, has biggish rigidity, props up as a whole
A part of support structure installs measuring part, and complete machine structure is stablized, and is suitable for carrying out rheology survey to high-speed rotating test sample
Examination.Rheometer of the invention is particularly suitable for the rheometer test of putty sample, and putty sample is because it needs to imitate constructor's
Work progress, therefore its revolving speed for testing selection is larger, therefore there are certain requirements to the structural strength of complete machine tool, it is existing small-sized
Modular normal force transducer is difficult to meet the test to putty sample.
Preferably, the support construction further includes bracket, and the normal force transducer includes the bullet with foil gauge
Property body, one end of elastomer is fixed on the bracket, and the other end is free end, the fixed upper measurement portion in the free end
Part, normal force transducer calculate the normal force that test sample is applied on upper measuring part according to the deformation quantity of foil gauge.
In the above scheme, the normal force transducer is configured to the big and elasticity knot with certain rigidity of volume
Structure, which constitute the main body supporting structures of upper fixture, for installing measuring part and bearing the normal direction that above measuring part transmits
Power.
Preferably, the lower fixture has the driving device for driving its rotation, and the rheometer includes torque sensing
Device, the torque sensor are arranged in upper fixture, and measurement test sample is applied to the torque in upper fixture.
In the above scheme, torque sensor and driving device are separately positioned, and driving device is arranged on lower fixture, torque
Sensor is arranged in upper fixture, and in the prior art by torque sensor and driving device setting ipsilateral, so then counting
Calculate torque when need to deduct sample itself inertia and other influence factors, to can just obtain true torque data, this hair
It is bright by by the treatment process of torque sensor and the separately positioned simplified data of driving device.Torque sensor and drive combination
There are the calibration problems of sensor and fixture inertia for design, it is necessary to is deducted the torque that inertia generates by mathematical method.
When especially testing low viscosity or low modulus sample, because comparing sensor and fixture inertia, the torque of such sample generation
Much smaller, it is accurate that inertia calibration is difficult to.Mainstream rheometer, which does vibration test all and is, at present uses strain controlling, and torque sensor
It is to directly control stress with driver separate design, it is constant is not able to maintain strain.Iterative cycles can only be passed through by being generally separated design
Feedback loop, the controlled strain in vibration test, required strain could be obtained by generally requiring repeatedly to recycle, to increase test
Time.In addition, being tested for non-linear big strain oscillatory shear, due to the input signal of driver and the measuring signal of sensor
Between there is coupling, the original signal tested will generate the deviation not being avoided that when doing Fourier transform.
Torque sensor and driver separate design are the torques that direct test sample generates, and do not have to consider torque sensor
And fixture, therefore without doing inertia calibration.Low viscosity in test process or modulus and viscosity and modulus are occurred huge
The sample of variation, is very suitable to.Separate design is to directly control strain, without doing iterative feedback calculating in vibration test,
Reach required strain in cycle of oscillation, it is accurate needed for easy Fourier transformation that Non-Linear Ocsillation test can directly obtain
Original signal.
Preferably, upper measuring part includes lower Measuring plate and the axis body for connecting lower Measuring plate, the bottom of the torque sensor
Portion's connection axis body, the top of torque sensor is connected to the free end of elastomer by adapter.
In the above scheme, the normal force transducer is laterally arranged, by the Deformation calculation normal force of free end,
Therefore torque sensor and normal force transducer are not easy to be directly connected to, therefore inventor is directed to the situation and devises adapter,
Realize the connection of torque sensor and normal force transducer.
Preferably, the adapter includes first connecting portion and second connecting portion, and the first connecting portion is fixed on bullet
The free end of property body is fixedly connected at the top of the second connecting portion and torque sensor.
Preferably, the elastomer is block structure, the plate body that the first connecting portion is vertically arranged, the plate
The conjunction of body surface face paste is fixed on the end face of block structure free end, and the second connecting portion is horizontally disposed plate body, should
Plate body surface connects the top of the torque sensor.
Preferably, described second connecting portion one end is connect with the bottom end of the first connecting portion, and the other end is to elasticity
The fixing end of body extends, and torque sensor is mounted on to the lower section of elastomer；
In the above scheme, second connecting portion extends in its fixing end of the lower direction of elastomer, thus by torque sensor
It is mounted on the lower section of elastomer, so that complete machine structure is compact, this is reasonable in design reliable.
The second connecting portion is arranged in parallel with the elastomer and the lower surface of its upper surface and the elastomer
With gap.
Preferably, the normal force transducer is shear strain beam sensor, and the torque sensor is strain-type
Torque sensor.
In the present invention, the normal force transducer selected range and Accuracy Matching putty sample effect are in upper measuring part
The shear strain beam sensor of normal force profile；The torque sensor selected range and Accuracy Matching putty sample effect are in upper
The strain-type torque sensor of the torque range of measuring part；
Preferably, the torque sensor selected range is 0-2NM, and precision is the strain-type torque of ± 0.01%F.S
Sensor.
The upper measuring part has the upper contact surface of engaged test sample, and the lower fixture includes lower measurement portion
Part, lower measuring part have the lower contact surface of engaged test sample, and the diameter of the lower contact surface is 70~200mm, upper contact
The diameter ratio of face and lower contact surface is 5:10~9:10.
Preferably, test sample is filled in the loading part, is shaped to a thickness of 1~3mm, and diameter is 70~
200mm cylindrical body, the height of the annular rib are 1~9mm.Above-mentioned design is inventor by a large amount of experiment discovery
When putty sample formation is that above-mentioned shape is conducive to carry out the test of putty sample, and test result is accurate.
Preferably, the lower fixture include driving motor and with driving motor be drivingly connected lower measuring part, it is described
Upper measuring part and lower measuring part all have the contact surface of engaged test sample, its contact is located on the lower measuring part
Face side is provided with barrier structure, and barrier structure and its contact surface form the loading part of test sample.
It is existing because putty sample, in rheological experiment, because to imitate worker's work progress, rotary rpm is larger
The test panel of fixture is designed to plane tabular structure under some rheometers, and in high speed rotation, then putty sample is in centrifugal force
Its lower edge is easily broken dispersion, directly influences experimental result.Therefore in the present invention, specially in the lower measuring part of lower fixture
Upper setting barrier structure, prevents putty sample in high-speed rotation process, edge rupture dispersion.
The barrier structure can be for around several protrusions of the contact surface of lower measuring part setting, these protrusion limitations
The position of putty sample.
Preferably, the barrier structure is the cyclic annular rib that the contact surface edge of lower measuring part is arranged in, ring-type gear
Side is higher than test sample upper surface in loading part, to prevent test sample from deforming lower edge rupture/separation in high-speed rotation.
By using above technical scheme, the invention has the following advantages:
Rheometer of the invention, including the adjustable upper fixture of relative distance and lower fixture, the upper fixture include branch
The upper measuring part of support structure and installation on the support structure, the support construction includes normal force transducer, and described is upper
Measuring part is fixedly mounted on the normal force transducer；The normal force transducer structural volume of rheometer of the present invention is big,
Intensity is big, has biggish rigidity, as a whole a part of support construction, installs measuring part, and the normal force senses
Device detects sensitive, range ability 0-50N, to be suitable for the rheometer test to putty sample.
A specific embodiment of the invention is described in further detail with reference to the accompanying drawing.
Detailed description of the invention
The a part of attached drawing as the application, for providing further understanding of the invention, of the invention is schematic
Examples and descriptions thereof are used to explain the present invention, but does not constitute an undue limitation on the present invention.Obviously, the accompanying drawings in the following description
Only some embodiments to those skilled in the art without creative efforts, can be with
Other accompanying drawings can also be obtained according to these attached drawings.In the accompanying drawings:
Fig. 1 is rheometer complete machine structure schematic diagram of the invention；
Fig. 2 is the portion A enlarged drawing in Fig. 1；
Fig. 3 is the portion B enlarged drawing in Fig. 1.
Wherein, 11, upper measuring part；12, lower measuring part；3, driving motor；31, drive shaft；4, temperature control plate；41, it dissipates
Thermal part；5, first sleeve；6, second sleeve；61, protrusion；7, bracket；71, blocking portion；8, cooling fan；9, normal force passes
Sensor；101, first support；102, second support；1021, escape groove；1022, hole；1023, headlamp；103, torque sensing
Device；104, upper Measuring plate；106, adapter；1061, first connecting portion；1062, second connecting portion；107, lower Measuring plate；108,
Cyclic annular rib；109, pedestal；200, guide rail；201, motor；202, grating scale；203, sliding block；204, cabinet.
It should be noted that these attached drawings and verbal description are not intended to the design model limiting the invention in any way
It encloses, but illustrates idea of the invention by referring to specific embodiments for those skilled in the art.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in embodiment is clearly and completely described, the following examples are intended to illustrate the invention, but
It is not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term " on ", "lower", "inner", "outside"
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " connects
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Embodiment one
Ginseng is as shown in figure 1 to 3, described the present embodiment provides a kind of rheometer, including upper fixture, lower fixture and temperature control system
Upper fixture and/or lower fixture there is the driving motor 3 for driving its rotation, the temperature control system is arranged with driving motor
In 3 upper fixture and/or lower fixture.
Preferably, the upper fixture and lower fixture include measuring part, and measuring part has connecing for engaged test sample
The drive shaft 31 of driving motor 3 on contacting surface, the upper fixture or lower fixture and its measuring part are drivingly connected, the temperature control system
System includes temperature control plate 4, and the temperature control plate 4 is mounted in the measuring part and/or the drive shaft 31, and described
Measuring part rotates together.
In the above scheme, the ipsilateral of rheometer is arranged in temperature control plate 4 and driving motor 3, and composite integrated is configured to
Rotatable temperature control system improves the heat exchange efficiency of cooling system by by temperature control system setting rotatable structure,
The rheometer smart structural design, it is structurally reasonable reliable, radiating efficiency is effectively raised, the structure of temperature control system is simplified.
Preferably, the temperature control plate 4 connects the power supply line of rheometer, the circuit switch by circuit switch device
Device includes the mutual rotation section for keeping electrical connection and fixed part, and the rotation section and the temperature control plate 4 are connected and fixed simultaneously
Electrical connection, rotates together, the fixed part remain stationary state and is electrically connected with the power supply line with temperature control plate 4.
In the above scheme, prevent power supply line in 4 rotation process of temperature control plate by circuit switch device, rheometer
Power cord wrap is in upper fixture or lower fixture, so that temperature control plate 4 is during rotation, does not generate with the power supply line dry
It relates to, guarantee system normally works.
Preferably, the rotation section includes first sleeve 5, and the first sleeve 5 is set in the outer of the drive shaft 31
Portion, top are fixed on the temperature control plate 4 and are electrically connected with temperature control plate 4, rotate together with temperature control plate 4, the fixation
Portion includes being set in outside the first sleeve 5 to be in electrical contact the second sleeve 6 being slidably connected with first sleeve 5, and this second set
6 connection of the cylinder power supply line connection, realizes and powers to temperature control plate 4.
In the above scheme, rotation section and fixed part are designed the inside and outside structure being set with, and ensure that rotation section and temperature control plate 4
Linkage and electrical connection, and the body construction of fixed part and rheometer is fixed, and described so that temperature control plate 4 is during rotation
Power supply line does not generate interference, and guarantee system normally works.
Preferably, the temperature control plate 4 includes several semiconductor temperature-control devices of the ontology and installation of plate on the body, institute
It states ontology and fixation is installed in measuring part, be provided with the power interface for being connected to each semiconductor temperature controller on ontology, it is described
First sleeve 5 is electrically connected directly or by conducting wire with the power interface.
In the above scheme, in order to improve heating efficiency or refrigerating efficiency, a rheometer is provided with multiple semiconductor temperature
Device is controlled, the present invention is provided with the ontology of plate further directed to each semiconductor temperature controller, is provided with multiple installations in plate-like body
Portion is respectively used to install each semiconductor temperature controller, and each semiconductor temperature controller power supply is set as in plate-like body
Power interface facilitates each semiconductor temperature controller of temperature control plate 4 and being electrically connected for rotation section.
Preferably, rheometer further includes that the position of the restricted second sleeve 6 prevents the position limiting structure of its rotation；
Preferably, the upper fixture and/or lower fixture include the bracket 7 for installing driving motor 3, the limit
Structure includes the protrusion 61 being arranged in the second sleeve 6 and the blocking portion 71 being arranged on bracket 7, and blocking portion 71 limits
The position of the protrusion 61, so that second sleeve 6 remain stationary state.
In the above scheme, it is provided with the protrusion 61 radially extended in the second sleeve 6, it is right on bracket 7
It should protrude and be provided with blocking portion 71, which stops the rotation of protrusion 61, so that second sleeve 6 remain stationary state,
In this way, then temperature control plate 4 during rotation, the state that fixed part second sleeve 6 is remain stationary, the power supply line can directly with
The second sleeve 6 connects, and in system normally works, the two does not generate interference, and wrapping phenomena will not occur.
Preferably, the circuit switch device is conducting slip ring, and the inner ring rotor of conducting slip ring is fixed on temperature control plate 4
And be electrically connected by conducting wire with temperature control plate 4, the outer ring stator of conducting slip ring is fixed and is electrically connected with the power supply line.
Preferably, the temperature control system further includes the thermal component 41 connecting with temperature control plate 4, and driving motor 3 drives it
Measuring part rotation, drives 41 high speed rotation of thermal component to carry out rapid cooling；
In the above scheme, during driving motor 3 drives measuring part rotation, 41 turns of the thermal component is driven
It is dynamic, contact of the thermal component 41 with air is improved, heat exchanger effectiveness is improved.
Preferably, the thermal component 41 includes the cooling fin around 4 edge of temperature control plate setting in one week, cooling fin
One end is fixed on temperature control plate 4, and the other end extends to the side of the outer ring stator.
The cooling fin extends to the side of conducting slip ring, is arranged around the conducting slip ring, to increase scattered
Heat area improves heat exchange efficiency.
Further, the temperature control system further includes cooling device, and the cooling device is arranged in thermal component 41
Side, auxiliary heat dissipation component 41 radiate；
The cooling device can use water cooling mode or air cooling mode.
Preferably, the cooling device includes cooling fan 8, and cooling fan 8 is arranged towards the thermal component 41；
The thermal component 41 of cooling fan 8 towards rotation drives air, improves heat exchange efficiency.
It is furthermore preferred that the cooling device includes two cooling fans 8 that the opposite two sides of thermal component 41 are arranged in,
Two cooling fans 8 are flowed to same direction driving air.
In the above scheme, two cooling fans 8 are towards same direction driving air flowing, to accelerate thermal component 41
The air at place flows, and further improves heat exchange efficiency.
Preferably, the lower fixture includes bracket 7, the driving motor being mounted on bracket 73, is mounted on driving motor 3
Drive shaft 31 on measuring part and the temperature control plate 4 that is mounted on measuring part, thermal component 41 is installed on temperature control plate 4,
Cooling device is installed, cooling device is arranged towards the thermal component 41 at the top of the bracket 7.
Embodiment two
Embodiment two further provides for the structure of rheometer on the basis of example 1:
Referring to shown in Fig. 1, Fig. 2, Fig. 3, in the present embodiment, rheometer equally includes the adjustable upper fixture of relative distance under
Fixture, the upper fixture include the upper measuring part 11 of support construction and installation on the support structure, the support knot
Structure includes normal force transducer 9, and the upper measuring part 11 is fixedly mounted on the normal force transducer 9.
In the above scheme, 9 structural volume of normal force transducer is big, intensity is big, has biggish rigidity, props up as a whole
A part of support structure installs measuring part 11, and complete machine structure is stablized, and is suitable for carrying out rheology to high-speed rotating test sample
Test.Rheometer of the invention is particularly suitable for the rheometer test of putty sample, and putty sample is because it needs to imitate constructor
Work progress, therefore its revolving speed for testing selection is larger, therefore there are certain requirements to the structural strength of complete machine tool, existing small
The modular normal force transducer of type is difficult to meet the test to putty sample.
Preferably, the support construction further includes bracket 101, and the normal force transducer 9 includes having foil gauge
Elastomer, one end of elastomer is fixed on the bracket 101, and the other end is free end, and the free end is fixed described
Upper measuring part 11, normal force transducer 9 calculate test sample (putty sample) according to the deformation quantity of foil gauge and are applied to
Normal force on measuring part 11.
In the above scheme, the normal force transducer 9 is configured to the big and elasticity knot with certain rigidity of volume
Structure, which constitute the main body supporting structures of upper fixture, for installing measuring part 11 and bearing what upper measuring part 11 transmitted
Normal force.
Preferably, the lower fixture has the driving device for driving its rotation, and the rheometer includes torque sensing
Device 103, the torque sensor 103 are arranged in upper fixture, and measurement test sample is applied to the torque in upper fixture.
In the above scheme, torque sensor 103 and driving device are separately positioned, and driving device is arranged on lower fixture,
Torque sensor 103 is arranged in upper fixture, and in the prior art by torque sensor 103 and driving device setting ipsilateral,
Inertia that is such then needing to deduct sample itself in calculated torque and other influence factors, to can just obtain true torque
Data, the present invention is by by the treatment process of torque sensor 103 and the separately positioned simplified data of driving device.
Preferably, upper measuring part 11 includes upper Measuring plate 104 and the axis body for connecting upper Measuring plate 104, and the torque passes
The bottom connection of sensor 103 axis body, the top of torque sensor 103 by adapter 106 be connected to elastomer from
By holding.
In the above scheme, the normal force transducer 9 laterally setting, passes through the Deformation calculation normal direction of free end
Power, therefore torque sensor 103 and normal force transducer 9 are not easy to be directly connected to, therefore inventor is directed to the situation and devises
Adapter 106 realizes the connection of torque sensor 103 Yu normal force transducer 9.
Preferably, the adapter 106 includes first connecting portion 1061 and second connecting portion 1062, first connection
Portion 1061 is fixed on the free end of elastomer, and the second connecting portion 1062 is fixedly connected with the top of torque sensor 103.
Preferably, the elastomer is block structure, and the plate body that the first connecting portion 1061 is vertically arranged should
The fitting of plate body surface is fixed on the end face of block structure free end, and the second connecting portion 1062 is horizontally disposed plate
Shape body, the plate body surface connect the top of the torque sensor 103.
Preferably, described 1062 one end of second connecting portion is connect with the bottom end of the first connecting portion 1061, another
It holds to the fixing end of elastomer and extends, torque sensor 103 is mounted on to the lower section of elastomer；
In the above scheme, second connecting portion 1062 extends in its fixing end of the lower direction of elastomer, so that torque be passed
Sensor 103 has been mounted on the lower section of elastomer, so that complete machine structure is compact, this is reasonable in design reliable.
The second connecting portion 1062 and the elastomer are arranged in parallel and under its upper surface and the elastomers
Surface has gap to not influence the measurement result of normal force transducer.
Preferably, the normal force transducer 9 is shear strain beam sensor, and the torque sensor 103 is to answer
Variant torque sensor.
In the present invention, 9 selected range of normal force transducer and Accuracy Matching putty sample effect are in upper measuring part
The shear strain beam sensor of 11 normal force profile；103 selected range of torque sensor and Accuracy Matching putty sample
Act on the strain-type torque sensor of the torque range of measuring part 11；
Preferably, 103 selected range of torque sensor is 0-2NM, and the strain-type that precision is ± 0.3%F.S is turned round
Square sensor 103.
The upper measuring part 11 has the upper contact surface of engaged test sample, and the lower fixture includes lower measurement portion
Part 12, lower measuring part 12 have the lower contact surface of engaged test sample, and the diameter of the lower contact surface is 70~200mm, on
The diameter ratio of contact surface and lower contact surface is 5:10~9:10.
Preferably, the lower fixture include driving motor 3 and with driving motor 3 be drivingly connected lower measuring part 12,
The upper measuring part 11 and lower measuring part 12 all have the contact surface of engaged test sample, on the lower measuring part 12
Its contact surface side is provided with barrier structure, barrier structure and its contact surface form the loading part of test sample.
It is existing because putty sample, in rheological experiment, because to imitate worker's work progress, rotary rpm is larger
The test panel of fixture is designed to plane tabular structure under some rheometers, and in high speed rotation, then putty sample is in centrifugal force
Its lower edge is easily broken dispersion, directly influences experimental result.Therefore in the present invention, specially in the lower measuring part of lower fixture
Barrier structure is set on 12, prevents putty sample in high-speed rotation process, edge rupture dispersion.
The barrier structure can be for around several protrusions of the contact surface of lower measuring part 12 setting, these protrusion limits
The position of putty sample processed.
Preferably, the barrier structure is the cyclic annular rib 108 that the contact surface edge of lower measuring part 12 is arranged in, ring
Shape rib 108 be higher than loading part in test sample upper surface, with prevent test sample high-speed rotation deformation lower edge rupture/point
From.
Preferably, test sample (such as putty sample) be filled in as described in loading part in, be shaped to a thickness of 1~3mm, directly
Diameter is 70~200mm cylindrical body, and the height of the annular rib is 1~9mm.Above-mentioned design is inventor by a large amount of real
The existing test when putty sample formation for above-mentioned shape conducive to progress putty sample is issued after examination and approval, and test result is accurate.
Embodiment three
Existing rheometer does not have Integration Design, needs that power supply box and control cabinet is specially arranged, rheometer ontology connects respectively
Power supply box and control cabinet are connect, power supply box provides power supply for rheometer, and control cabinet provides some control calculating process, however outside these
The structure connect makes whole rheometer equipment become complex redundancy.For this situation, referring to described in Fig. 1, the present embodiment provides one
Kind of rheometer comprising pedestal 109 installs lower fixture on pedestal 109, also vertically-mounted on pedestal 109 to have guide rail 200, bracket
101 are slidably disposed on the guide rail 200 by sliding block 203, can be moved up and down along guide rail 200, it is preferred that pedestal
The driving mechanism for driving upper fixture to move up and down is installed, which includes guide rail 200 and drive with guide rail 200 on 109
The motor 201 of dynamic connection, 201 forward and reverse rotation of motor drive upper fixture to rotate upwardly and downwardly movement, and one of principle is guide rail
200 is have threaded rhabodoid, and the bracket 101 of upper fixture includes sliding block 203, are connected by sliding block 203 described rod-shaped
On body, so then when motor rotates forward or backwards, which can move up and down along rhabodoid.In order to realize accurate control
Gap between upper fixture processed and lower fixture in the present embodiment, is additionally provided with grating scale 202, and the design for passing through grating scale 202 is real
The distance between accurate control upper fixture and lower fixture are showed.
Further, it is also equipped with cabinet 204 on the bottom stage, power module and control mould are installed in cabinet 204
Block, power module is for powering, and control module is for being controlled, by power module, control module and rheology in the present embodiment
The setting of instrument Ontology integration is integrated, and structure is compact, is not take up space；
Preferably, rhabodoid and motor 201 are also disposed in cabinet 204, further, are provided with power supply on cabinet 204
Interface and cable mouth, power interface are used for external power supply, and external power supply described in electric power source pair of module carries out power supply control, cable mouth
For external computer, so that control module sends data to computer, Data Analysis Services are carried out by computer.
Example IV
Shown in referring to figures 1-3, the lighting system of rheometer is described in example IV, in the present embodiment, rheology
Instrument includes for fixing the first support 101 of normal force transducer 9 and extending to the second support of 103 bottom of torque sensor
102, the torque sensor 103 is mounted between normal force transducer 9 and second support 102,102 upper surface of second support
Corresponding 103 indent of torque sensor is provided with escape groove 1021, and the slot bottom aperture 1022 of escape groove 1021 is used for upper Measuring plate
104 axis body passes through, and the bottom of the second support 102 is provided with headlamp 1023, and headlamp 1023 is arranged downward, to putty
The loading area of sample is illuminated.
Preferably, 102 lower surface of second support is around one week multiple headlamp 1023 of setting of axis body, thus by putty
The loading area of sample illuminates completely, and more preferably, a photograph is respectively set in the axis body two sides in second support 102 positioned at upper fixture
Bright lamp 1023, the headlamp 1023 are LED light.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this patent
Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompt are modified or are modified to
The equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, it is right according to the technical essence of the invention
Any simple modification, equivalent change and modification made by above embodiments, in the range of still falling within the present invention program.
Claims (10)
1. a kind of rheometer, including the adjustable upper fixture of relative distance and lower fixture, the upper fixture include support construction
With the upper measuring part of installation on the support structure, which is characterized in that the support construction includes normal force transducer, described
Upper measuring part be fixedly mounted on the normal force transducer.
2. a kind of rheometer according to claim 1, which is characterized in that the support construction further includes bracket, described
Normal force transducer include the elastomer with foil gauge, one end of elastomer is fixed on the bracket, and the other end is
Free end, the fixed upper measuring part in the free end, normal force transducer calculate test according to the deformation quantity of foil gauge
Sample is applied to the normal force on measuring part.
3. a kind of rheometer according to claim 1 or 2, which is characterized in that the lower fixture, which has, drives its rotation
Driving device, the rheometer includes torque sensor, and the torque sensor is arranged in upper fixture, measurement test
Sample is applied to the torque in upper fixture.
4. a kind of rheometer according to claim 3, which is characterized in that upper measuring part includes under lower Measuring plate and connection
The axis body of Measuring plate, the bottom connection of the torque sensor axis body, the top of torque sensor is connected by adapter
It is connected to the free end of elastomer.
5. a kind of rheometer according to claim 4, which is characterized in that the adapter includes first connecting portion and second
Interconnecting piece, the first connecting portion are fixed on the free end of elastomer, the top of the second connecting portion and torque sensor
It is fixedly connected.
6. a kind of rheometer according to claim 5, which is characterized in that the elastomer is block structure, described the
The plate body that one interconnecting piece is vertically arranged, plate body surface fitting is fixed on the end face of block structure free end, described
Second connecting portion be horizontally disposed plate body, which connects the top of the torque sensor.
7. a kind of rheometer according to claim 5 or 6, which is characterized in that described second connecting portion one end with it is described
First connecting portion bottom end connection, the other end to the fixing end of elastomer extend, torque sensor is mounted on elastomer
Lower section；
The second connecting portion is arranged in parallel with the elastomer and its upper surface and the lower surface of the elastomer have
Gap.
8. -7 any a kind of rheometer according to claim 1, which is characterized in that the normal force transducer is shearing
Beam sensor is strained, the torque sensor is strain-type torque sensor.
9. -8 any a kind of rheometer according to claim 1, which is characterized in that the lower fixture includes driving motor
With the lower measuring part being drivingly connected with driving motor, the upper measuring part and lower measuring part all have engaged test sample
The contact surface of product is located at its contact surface side on the lower measuring part and is provided with barrier structure, barrier structure and its contact surface
Form the loading part of test sample.
10. a kind of rheometer according to claim 9, which is characterized in that the barrier structure is to be arranged in lower measurement
The cyclic annular rib at the contact surface edge of component, cyclic annular rib is higher than test sample upper surface in loading part, to prevent test sample
Lower edge rupture/separation is deformed in high-speed rotation.
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| CN201810446945.4A CN110361297A (en) | 2018-05-11 | 2018-05-11 | A kind of rheometer |
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| CN201810446945.4A CN110361297A (en) | 2018-05-11 | 2018-05-11 | A kind of rheometer |
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Application publication date: 20191022 |