CN109612846A - Both-end clamps three bending method fibrous material bending resistance force test devices and method - Google Patents
Both-end clamps three bending method fibrous material bending resistance force test devices and method Download PDFInfo
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- CN109612846A CN109612846A CN201910071597.1A CN201910071597A CN109612846A CN 109612846 A CN109612846 A CN 109612846A CN 201910071597 A CN201910071597 A CN 201910071597A CN 109612846 A CN109612846 A CN 109612846A
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- resistance force
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- 238000005452 bending Methods 0.000 title claims abstract description 128
- 239000002657 fibrous material Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 238000010998 test method Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000007650 screen-printing Methods 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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- 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
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0435—Chucks, fixtures, jaws, holders or anvils modifying the type of the force applied, e.g. the chuck transforms a compressive machine for applying a bending test
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- 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)
Abstract
The present invention relates to a kind of both-ends to clamp three bending method fibrous material bending resistance force test devices and method.The test device includes the upper clamper and lower gripper for being respectively used to clamping sample top and bottom with jaw；It is fixed on sample lower end and sample is made to bear the counterweight that initial tension is stretched under its gravity；The lower gripper is moved up and down by driving mechanism driving, and lower gripper is clamped in sample between upper clamper and lower gripper during moving up can form three bending shapes；Clamper connects load cell on this.The problem of test device structure is simple and convenient to operate, and is substantially increased test result accuracy, testing efficiency and practical a possibility that promoting and applying using the test method of the device, is successfully solved the test of fibrous material resistance to bending.
Description
Technical field
The invention belongs to fibrous material test equipment and test method field, it is fine that especially a kind of both-end clamps three bending methods
Tie up material bending resistance force test device and method.It is suitable for the inspection of the resistances to bending qualities such as chemical-fibres filaments, optical fiber, hair and staple fiber
It tests, control of product quality and research institution analyze and research to the bending property of all kinds of new fiber materials.
Background technique
Fibrous material can all be acted in processing and its manufactured goods by bending force in use, generate bending deformation.It is taking
With in textile industry, the pleasant softness and style of fabric are influenced when long filament or yarn use in fabric by bending deformation；?
In home textile industry, it is that external fabric coats that long filament, which cuts into staple fiber as filler, in use repeatedly by external force fiber
Bending Deformation, can generate permanent deformation when fiber bending recovery difference, such as pillow inferior with collapsing so that can not be normal long
It uses；In printing industry screen printing process, the chemical-fibres filaments stress in net, which generates bending deformation, influences printing quality.Furthermore
Fibrous material anti-bending strength directly influences soft in fibrous material product use in the production fields such as optical fiber, toothbrush, hairbrush
Hard degree, therefore research fibrous material bending resistance force test method and its test device are significant.
General material sample bending property test method has cantilever method, heart-shaped method, line-of-sight course or four-point method etc. at present.It is outstanding
Arm beam method is only applicable to the big material sample of stiffness, it is impossible to be used in the more soft fibrous material sample anti-bending strength of measurement；
Heart-shaped method is usually used in the test of fabric bending stiffness, but when testing with the method fibrous material anti-bending strength, due to undulation degree
Expect very thin and soft, it is more difficult to so that fibrous material sample is formed a heart shaped ring and measure its resistance to bending；Line-of-sight course or four-point method one
As be used to measure the bending stiffness of hard material, fixed, external force is placed in sample preparation, sample for flexible material fiber
There are problems for point sliding etc., study still in the exploratory stage.Once there were the upper marine limited public affairs of morning digital technology equipment in the country
The JQ03D single fiber that department develops stretches and bending compression instrument, studies fiber bending test method, it is characterized in that using surveying
Examination fiber bending method is that fiber one end is fixed, the other end is freely rotated, and referred to as " one and half bending " are compressed axially bending
Method, the problem is that fiber one end may slide when being pierced into micropore platform, fiber hinge end position is difficult to really this method
Skew etc. may occur for the fiber that fixed and fixing end is stretched out, and make the different in size of fiber samples between hinged end and fixing end, lead
It causes fiber bending performance measurements deviation occur, influences test result Stability and veracity and fail practical popularization and application.
Summary of the invention
The purpose of the present invention is to provide a kind of both-ends to clamp three bending method fibrous material bending resistance force test devices and method,
It mainly solves technical problem present in the above-mentioned prior art, which is simple and convenient to operate, and substantially increases survey
Test result accuracy, testing efficiency and practical a possibility that promoting and applying, successfully solve the test of fibrous material resistance to bending
Problem.
To achieve the above object, the present invention is implemented as follows:
Three bending method fibrous material bending resistance force test devices of a kind of both-end clamping, it is characterised in that: it includes point with jaw
The upper clamper and lower gripper of sample top and bottom Yong Yu not clamped；It is fixed on sample lower end and makees sample in its gravity
The counterweight stretched with lower receiving initial tension；The lower gripper is moved up and down by driving mechanism driving, and lower gripper is moving up
Three bending shapes can be formed by being clamped in sample between clamper and lower gripper in the process；Clamper connection dynamometry passes on this
Sensor.
The both-end clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: the counterweight is tension
Folder.
The both-end clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: the lower gripper
Driving mechanism includes stepper motor, step actuator, spiral shell block, screw rod；The stepper motor is driven by step actuator to be rotated；The step
Into the further connection wire rod of motor and drive screw rod rotation；The screw rod connects spiral shell block, and spiral shell block can be with moving down in the rotation of screw rod
It is dynamic；The sliding block connects lower gripper.
The both-end clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: lower gripper has
The extreme position moved down, which is initial position, and when the initial position, corresponding spiral shell block is equipped at shift position
Limiter.
The both-end clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: the load cell
Controller is connected by amplifying circuit, which is also connected with control step actuator simultaneously.
The both-end clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: the controller is meter
Calculation machine.
The both-end clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: the computer is into one
Step connection output device.
The both-end clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: the output device is
Display and/or printer.
Three bending method fibrous material bending resistance force test methods of a kind of both-end clamping, it is characterised in that: using as described above
Both-end clamps three bending method fibrous material bending resistance force test devices to implement, and comprises the concrete steps that:
A, by position among the supreme clamper of fibrous material specimen holder and lower gripper jaw, the lower end of fibrous material sample is connected
Counterweight is connect, fibrous material sample bears initial tension under the gravity of counterweight and stretches；
B, lower gripper is driven slowly to move upwards by driving mechanism, upper gripper position remains unchanged, and upper clamper is under
Distance between clamper is gradually reduced, and suffered bending deformation power is through upper clamper and by dynamometry after fibrous material sample bears bending
Sensor is acquired；
C, it is remained unchanged in upper gripper position, lower gripper in slow moving process, is just opened suffered by fibrous material sample upwards
Power is gradually reduced to zero, and then fibrous material sample is gradually curved deformation, is formed curved by ab sections, bc sections and cd sections three constituted
Curved state；
D, sample curvature increases when lower gripper continues to rise, and resistance to bending constantly increases, can be by after reaching maximum, force peak value
It is decrescence small, peak value, that is, sample maximum bending resisting ability value of the resistance to bending.
The both-end clamps three bending method fibrous material bending resistance force test methods, it is characterised in that: this method further includes
Step E is driven under the lower gripper when resistance to bending is decreased to be greater than setting numerical value with the difference of resistance to bending peak value by driving mechanism
Drop returns to be controlled by a limiter to be stopped in initial position.
The solution have the advantages that:
1, it adopts present invention both-end and clamps three bending methods test fibrous material bending resistance force test device, there is instrument performance accurately may be used
Lean on, have a wide range of application, sample preparation is simple and it is easy to operate the advantages that.Fibrous material is first cut to certain length short-movie section when test
Sample, sample upper end be clamped by upper clamper, and the other end bears lower clamping after initial tension stretches under clips gravity
Device clamps sample lower end, and then upper gripper position remains unchanged, and lower gripper moves up, and fibrous material sample is gradually curved
Deformation measures fibrous material resistance to bending by the load cell and its acquisition system being connected with upper clamper.
2, three bending methods test fibrous material bending resistance force test device and method are clamped using both-end of the present invention, it can be preferably
Solve the problems, such as that sample is placed.Fibrous material sample stretches sagging under clips gravity before testing, to avoid sample placement
When tilt, be kept fixed specimen length and vertical with upper and lower holder end face, to reach experimental condition
Unanimously, the reliability and reproducibility of resistance to bending test result are improved.
3, apparatus of the present invention use milligram grade high-precision sensor, acquire fibrous material sample during bending in real time
Resistance to bending variation, draws one displacement curve of resistance to bending, obtains fibrous material sample maximum bending resisting ability value.
Detailed description of the invention
Fig. 1 is that both-end of the invention clamps three bending method fibrous material resistance to bending schematic devices.
Fig. 2 is three curved schematic of fibrous material sample of both-end clamping.
In figure: 1-upper clamper, 2-lower grippers, 3-samples, 4-clips, 5-spiral shell blocks, 6-screw rods, 7-limits
Position device, 8-stepper motors, 9-step actuators, 10-load cells, 11-amplifying circuits, 12-computers, 13-is aobvious
Show device, 14-printers, a small bending of ab sections-sample, a macrobending of bc sections-sample, the one of cd sections-sample
A small bending.
Specific embodiment
Please refer to Fig. 1,2, it be a kind of both-end of the present invention clamp three bending method fibrous material bending resistance force test devices one compared with
The structural schematic diagram of good embodiment.As shown in the figure: it includes, and is respectively used to clamping sample 3 top and bottom with jaw
Upper clamper 1 and lower gripper 2；It is fixed on 3 lower end of sample and makes what sample 3 bore that initial tension stretches under its gravity to match
Weight；The lower gripper 2 is moved up and down by driving mechanism driving, and lower gripper 2 is clamped in upper clamping during moving up
Sample 3 can form three bending shapes between device 1 and lower gripper 3；Clamper 1 connects load cell 10 on this.
In the embodiment, which is clips 4.In use, upper clamper 1 clamps 3 upper end of fibrous material sample, will open
Power presss from both sides 4 gripping fibers material sample, 3 other end, and fibrous material sample bears initial tension under 4 gravity of clips and stretches, and
Vertical with upper and lower holder end face, lower gripper reclamps fibrous material sample lower end, fibrous material sample between upper and lower holder
For measuring fiber resistance to bending.
In the embodiment, the driving mechanism of the lower gripper 2 includes stepper motor 8, step actuator 9, spiral shell block 5, screw rod
6；The stepper motor 8 is driven by step actuator 9 to be rotated；The further connection wire rod 6 of stepper motor 8 simultaneously drives screw rod 6 to rotate；
The screw rod 6 connects spiral shell block 5, and spiral shell block 5 can be moved up and down with the rotation of screw rod 6；The sliding block 5 connects lower gripper 2.
Furthermore lower gripper 2 has the extreme position moved down, which is initial position, the initial position
When, limiter 7 is equipped at corresponding 5 shift position of spiral shell block.
In addition, the load cell 10 connects controller by amplifying circuit 11, which is also connected with control step simultaneously
Into driver 9；The controller is computer 12；The computer 12 further connects output device；Output device is display 13
And/or printer 14.
By above-mentioned apparatus embodiment, a kind of three bending method fibrous material resistance to bending test sides of both-end clamping are further implemented
Method comprises the concrete steps that:
A, fibrous material sample 3 is pressed from both sides into position among 2 jaw of supreme clamper 1 and lower gripper, it will be under fibrous material sample 3
End connection counterweight, fibrous material sample 3 bear initial tension under the gravity of counterweight and stretch；
B, drive lower gripper 2 slowly mobile upwards by driving mechanism, upper 1 position of clamper remains unchanged, upper 1 He of clamper
Distance between lower gripper 2 is gradually reduced, fibrous material sample 3 bear bending after suffered bending deformation power through upper clamper 1 simultaneously
It is acquired by load cell 10；
C, it is remained unchanged in upper 1 position of clamper, in the upward slowly moving process of lower gripper 2, suffered by fibrous material sample 3 just
Tension is gradually reduced to zero, and then fibrous material sample is gradually curved deformation, is formed by ab sections, bc sections and cd sections three constituted
Bending shape；
D, 3 curvature of sample increases when lower gripper 2 continues to rise, and resistance to bending constantly increases, the meeting after reaching maximum, force peak value
It is gradually reduced, peak value, that is, sample maximum bending resisting ability value of the resistance to bending.
It is further preferred that this method further includes step E, when resistance to bending is decreased to be greater than setting with the difference of resistance to bending peak value
When numerical value, drives the lower gripper 2 to be lowered back to by driving mechanism and stopped by a limiter 7 control in initial position.Then, it counts
Calculation machine 12 automatically by the output devices such as display 13 or printer 14 show sample 3 by it is curved when resistance to bending change curve and save
The maximum bending resisting ability value of sample.
As another embodiment of the invention, which can also be using sliding rail, the sliding block machine being driven by the cylinder
Structure, sliding block can lower movement on the slide rail under the cylinder drive, sliding block can further connect lower gripper 2, effect with it is upper
It is substantially similar to state preferred embodiment.
Preferably, the sensing of milligram grade high-precision sensor or higher precision can be used in load cell 10
Device.
The scope of application of the technology of the present invention includes, for the inspection of the resistances to bending qualities such as chemical-fibres filaments, optical fiber, hair and staple fiber
It tests, control of product quality and research institution analyze and research to the bending property of all kinds of new fiber materials.
The foregoing is merely illustrative of the preferred embodiments of the present invention, practical range not for the purpose of limiting the invention.It is i.e. all
Equivalent changes and modifications made by content according to scope of the present invention patent all should be technology scope of the invention.
Claims (10)
1. a kind of both-end clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: it includes having jaw
It is respectively used to the upper clamper (1) and lower gripper (2) of clamping sample (3) top and bottom；It is fixed on sample (3) lower end and makes
Sample (3) bears the counterweight that initial tension is stretched under its gravity；The lower gripper (2) is driven by driving mechanism to be moved down
Dynamic, lower gripper (2) is clamped between upper clamper (1) and lower gripper (3) that sample (3) can shape during moving up
At three bending shapes；Clamper (1) connection load cell (10) on this.
2. both-end according to claim 1 clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: should
Counterweight is clips (4).
3. both-end according to claim 1 clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: should
The driving mechanism of lower gripper (2) includes stepper motor (8), step actuator (9), spiral shell block (5), screw rod (6)；The stepper motor
(8) it is driven and is rotated by step actuator (9)；The further connection wire rod (6) of the stepper motor (8) simultaneously drives screw rod (6) to rotate；It should
Screw rod (6) connects spiral shell block (5), and spiral shell block (5) can be moved up and down with the rotation of screw rod (6)；The sliding block (5) connects lower gripper
(2).
4. both-end according to claim 3 clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: under
Clamper (2) has the extreme position that moves down, which is initial position, when the initial position, corresponding spiral shell block
(5) limiter (7) are equipped at shift position.
5. both-end according to claim 3 clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: should
Load cell (10) connects controller by amplifying circuit (11), which is also connected with control step actuator (9) simultaneously.
6. both-end according to claim 5 clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: should
Controller is computer (12).
7. both-end according to claim 6 clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: should
Computer (12) further connects output device.
8. both-end according to claim 7 clamps three bending method fibrous material bending resistance force test devices, it is characterised in that: should
Output device is display (13) and/or printer (14).
9. a kind of both-end clamps three bending method fibrous material bending resistance force test methods, it is characterised in that: using such as claim 1 or
Both-end described in 2 or 3 or 4 or 5 or 6 or 7 or 8 clamps three bending method fibrous material bending resistance force test devices to implement, and specifically walks
Suddenly it is:
A, fibrous material sample (3) are pressed from both sides into position among supreme clamper (1) and lower gripper (2) jaw, fibrous material is tried
The lower end of sample (3) connects counterweight, and fibrous material sample (3) bears initial tension under the gravity of counterweight and stretches；
B, slowly mobile upwards by driving mechanism driving lower gripper (2), upper clamper (1) position remains unchanged, upper clamping
Distance between device (1) and lower gripper (2) is gradually reduced, and fibrous material sample (3) bears suffered bending deformation power warp after bending
Upper clamper (1) is simultaneously acquired by load cell (10)；
C, it is remained unchanged in upper clamper (1) position, in the upward slowly moving process of lower gripper (2), fibrous material sample (3)
Suffered initial tension is gradually reduced to zero, and then fibrous material sample is gradually curved deformation, and formation is constituted by ab sections, bc sections and cd sections
Three bending shapes；
D, sample (3) curvature increases when lower gripper (2) continues to rise, and resistance to bending constantly increases, and is reaching maximum, force peak value
After can be gradually reduced, peak value, that is, sample maximum bending resisting ability value of the resistance to bending.
10. both-end according to claim 9 clamps three bending method fibrous material bending resistance force test methods, it is characterised in that:
This method further includes step E, when resistance to bending is decreased to be greater than setting numerical value with the difference of resistance to bending peak value, is driven by driving mechanism
The lower gripper (2), which is lowered back to, to be stopped by a limiter (7) control in initial position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910071597.1A CN109612846B (en) | 2019-01-25 | 2019-01-25 | Device and method for testing bending resistance of fiber material by double-end clamping three-bending method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910071597.1A CN109612846B (en) | 2019-01-25 | 2019-01-25 | Device and method for testing bending resistance of fiber material by double-end clamping three-bending method |
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| Publication Number | Publication Date |
|---|---|
| CN109612846A true CN109612846A (en) | 2019-04-12 |
| CN109612846B CN109612846B (en) | 2024-02-27 |
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| CN201910071597.1A Active CN109612846B (en) | 2019-01-25 | 2019-01-25 | Device and method for testing bending resistance of fiber material by double-end clamping three-bending method |
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| CN (1) | CN109612846B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398424A (en) * | 2019-07-19 | 2019-11-01 | 四川旭虹光电科技有限公司 | Device and method for testing the warping resistance intensity of flexible determinand |
| CN113624615A (en) * | 2021-08-06 | 2021-11-09 | 长飞（武汉）光系统股份有限公司 | Optical cable bending tension resistance testing device and testing method |
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| JP5279106B1 (en) * | 2013-03-08 | 2013-09-04 | ユアサシステム機器株式会社 | Linear bending and twisting tester |
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| JPS5590840A (en) * | 1978-12-28 | 1980-07-09 | Kanebo Ltd | Method and device for measuring flexural rigidity of filament-like material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398424A (en) * | 2019-07-19 | 2019-11-01 | 四川旭虹光电科技有限公司 | Device and method for testing the warping resistance intensity of flexible determinand |
| CN113624615A (en) * | 2021-08-06 | 2021-11-09 | 长飞（武汉）光系统股份有限公司 | Optical cable bending tension resistance testing device and testing method |
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| Publication number | Publication date |
|---|---|
| CN109612846B (en) | 2024-02-27 |
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