CN109540657A - A kind of the bundle fiber stretching clamper collet and purposes of normal pressure gradient distribution - Google Patents
A kind of the bundle fiber stretching clamper collet and purposes of normal pressure gradient distribution Download PDFInfo
- Publication number
- CN109540657A CN109540657A CN201811509481.3A CN201811509481A CN109540657A CN 109540657 A CN109540657 A CN 109540657A CN 201811509481 A CN201811509481 A CN 201811509481A CN 109540657 A CN109540657 A CN 109540657A
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- CN
- China
- Prior art keywords
- normal pressure
- gradient distribution
- collet
- clamper
- bundle fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G01N3/02—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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
Abstract
The present invention provides a kind of bundle fibers of normal pressure gradient distribution to stretch clamper collet and purposes, is successively bonded and is constituted by soft metal layer and the bottom bloom for fixing of the hard high-polymer layer of clamping face, intermediate supports and flexible；The hard high-polymer layer and soft metal layer are mutually to agree with trapezoidal, form the normal pressure of gradient distribution along draw direction to fibre bundle in the clamping face of collet.Due to the normal pressure of gradient distribution, it can implement effectively and be uniformly distributed the clamping of pressure to the fibre bundle of grips section, more efficient and low consumption clamping is applied to fiber.The present invention is mountable on the clamper seat of fibre bundle tensile tester, is also mountable on the clamper seat of all kinds of strength measuring devices, for fibre bundle, film, fabric uniform stressed, anti-skidding and preventing damage clamping, so as to strongly measure more acurrate.
Description
Technical field
The present invention relates to a kind of bundle fibers of normal pressure gradient distribution to stretch clamper collet and application thereof, belongs to undulation degree
Expect strength field of measuring technique.
Background technique
Ionization meter is derived from the measurement to material, therefore general collet is printed on diamond shape burr in clamping face and is quenched hard
Change the structure for obtaining to be embedded in gripped object in clamping, is held with preventing from skidding and stablize.This is larger to form, hardness is larger
Metal object for be feasible, but be fatal for fibrous material small to form, soft, because clamping directly results in
The damage of fiber is even broken.
Existing collet, it is most to increase friction to increase hardness and increase pressure.Such as patent
200820150156.8 disclose a kind of technical fiber strength and elongation instrument clamper, are the combinations by moving intermediate plate, clamp piece and fixture block
Mode and structure, the upper and lower holder and the block-shaped use L shape of clamping with screw hole, are practically applicable to the short fibre of technical fiber
Dimension；Dynamic intermediate plate and clamp piece are combined together by screw, and the stability of the elastic influence sample stress of screw influences clamper
Service life, and fiber in loading process fibre bundle collet inside edge stress maximum, make fiber discontinuity, influence it
The result of test.Article " Automatic-drawing of elastomer is tested " (Stein, Klotz, Germanova-Krasteva, et al.
The Automatic-drawing of elastomer tests [J] World Textile Leader, 2009,37 (6): 7-8) in describe common CRE type and stretch
BISFA rotates the clamper of chucking method and Statin atMEL machine using special c-type metal jaw face and soft flat on testing machine
Jaw face combines.Both clampers can minimize the sliding of fiber and fracture, but higher clamp pressure is pressing from both sides fiber
Premature failure in holder.The hold assembly designed in CN201190001175.4 patent only uses rubber in the clamping face of side collet
Glue component.
Fiber strength and elongation instrument clamper is the critical component on fibre strength instrument, it be for holding tested fiber,
Performance quality directly affects the test of fiber stretching property by force, it require clamper during stretching can effective gripping fibers, do not go out
Now skidding withdrawing phenomenon, fiber uniform force, while cannot damage again or pinch off fiber, because these all will seriously affect fiber
Ultimate strength and elongation at break test result.
Summary of the invention
The technical problem to be solved in the present invention is to provide it is a kind of suitable for bundle fiber stretch, fiber samples can be made to be easy to press from both sides
It holds, is not easy the withdrawing that skids, be not easy pinch off and damage fiber, and keep chucking power uniform, to guarantee the collet of the correctness of test.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of bundle fibers of normal pressure gradient distribution
Stretch clamper collet, it is characterised in that: by the hard high-polymer layer of clamping face, intermediate supports and flexible soft metal layer and
Bottom bloom for fixing successively bonds composition；
The hard high-polymer layer and soft metal layer be mutually agree with it is trapezoidal, collet clamping face to fibre bundle along drawing
Stretch the normal pressure that direction forms gradient distribution.
Preferably, the hard high-polymer layer is along draw direction thickness distribution gradient；The soft metal layer is along stretching side
To thickness distribution gradient, and soft metal layer thickness change is opposite with hard high-polymer layer thickness variation.
Preferably, the hard high-polymer layer is the high polymer piece that clamping face is smooth, adhesive surface is smooth.
Preferably, the high polymer piece is polyester piece, polyimide piece or hard rubber sheet.
Preferably, the soft metal layer one side bonding with hard high-polymer layer is smooth, the soft metal layer and bloom
Bonding one side is flat and smooth or has raised line；The bloom and soft metal layer it is bonding correspond on one side it is flat and smooth or
With fluted.
Preferably, the soft metal layer is stainless steel substrates, nickel alloy sheet, leaded steel alloy sheet or alloy aluminium flake.
Preferably, the hard high-polymer thickness degree is equal to bundle fiber diameter.
Preferably, the adhesive of the bonding is organic silicon or epoxy hot melt adhesive class binder.
Preferably, the bloom is directly embedded into clamper seat；Or the bloom is consolidated by screw and clamper seat, it is described
Bloom side or bottom surface are equipped with the screw hole for consolidation.
Preferably, the collet is individually used in combination with lower plane body, or in pairs, symmetrically uses.
The present invention also provides the purposes that a kind of bundle fiber of above-mentioned normal pressure gradient distribution stretches clamper collet,
It is characterized in that: for uniform, anti-skidding and preventing damage the clamping to high polymer material, to realize that strength measures；The high polymer
Material includes but is not limited to bundle fiber, film, fabric.
Due to the adoption of the above technical solution, compared with prior art, the present invention having the following advantages that and actively imitating
Fruit:
(a) three-decker of the bloom of hard high-polymer layer, the toughness soft metal layer of support and fixation makes the folder on sample
Holding force energy uniformity, can equably gripping fibers, and fiber is made to be not easy to skid or crush, to guarantee the correct of test result
Property；
(b) clamping face in clamper can correctly select suitable material and shape according to the property of clamping sample, especially
It is the pressure effect of gradient distribution, can increase coefficient of friction, more effective gripping fibers；
(c) due to the normal pressure of gradient distribution, the fibre bundle of grips section can be implemented effectively and is uniformly distributed pressure
The clamping of power applies more efficient and low consumption clamping to fiber.
Detailed description of the invention
Fig. 1 be positive barometric gradient distribution bundle fiber stretch clamper collet schematic diagram；
Description of symbols:
1- hard high-polymer layer, 2- soft metal layer, 3- bloom.
Specific embodiment
Present invention will be further explained below with reference to specific examples.
Fig. 1 be positive barometric gradient distribution bundle fiber stretch clamper collet schematic diagram, the normal pressure gradient distribution
Bundle fiber stretch clamper collet by the hard high-polymer layer 1 of clamping face, intermediate supports and the soft metal layer 2 for having certain toughness
Composition is successively bonded with bottom bloom 3 for fixing.
The hard high-polymer layer 1 is the high polymer piece that clamping face is smooth, adhesive surface is smooth, and high polymer piece is preferably poly-
Ester piece, polyimide piece or hard rubber sheet.High polymer piece is along draw direction thickness distribution gradient.
The soft metal layer 2 is sheet metal, and the sheet metal one side bonding with hard high-polymer layer 1 is smooth, sheet metal
Another side (with the one side that bloom 3 is bonding or insertion is bonding) is structure that is flat and smooth or having raised line.Soft metal layer 2 is along drawing
Stretch direction thickness distribution gradient.Soft metal layer 2 is preferably stainless steel substrates, nickel alloy sheet, leaded steel alloy sheet or alloy aluminium flake.
The hard high-polymer layer 1 and soft metal layer 2 be mutually agree with it is trapezoidal, collet clamping plane to fiber
Beam forms the normal pressure of gradient distribution along draw direction.
3 surface of bloom is flat and smooth or reeded flat and smooth face；The bloom 3 can be directly embedded into
Clamper seat, or a pair of of screw hole for consolidation is provided in its side or bottom surface.
It is bonded between each layer using binder.Adhesive use with metal and the preferable organic silicon of polyesters adhesiveness,
Epoxy hot melt adhesive class has bonds well performance and high temperature resistance binder.
The bundle fiber of normal pressure gradient distribution of the present invention stretches clamper, can individually be used in combination with lower plane body, also may be used
In pairs, it symmetrically uses, is pairs of, symmetrical use shown in Fig. 1.
The present invention mainly utilizes the principle of uniform force to improve fiber strength and elongation clamper.Hard high-polymer layer is with a thickness of fibre
Tie up diameter length.Using etc. shear tensions gradient principle, make fibre bundle collet inside edge stress maximum, guarantee fibre herein
Sliding and withdrawing, middle layer good toughness do not occur for dimension.Avoiding problems the defect that tested fiber samples easily skid and crush,
To improve the test result of fiber strength and elongation test.
The bundle fiber of normal pressure gradient distribution of the present invention stretches clamper collet, can in pairs, to be symmetrically arranged on bundle fiber strong
On the clamper seat of power instrument, also it is mountable on the clamper seat of all kinds of strength measuring devices；For to fibre bundle, film, fabric
Uniform, anti-skidding and preventing damage fiber the clamping of equal high polymer materials, so that bundle strength measurement is more accurate.
It is illustrated below with several specific application examples.
Embodiment 1: fiber
Clamper collet is stretched using the bundle fiber of normal pressure gradient distribution of the present invention, all controls pass through computer interface
Operation.Initialization motor first sets test gauge, opens CCD camera automatic light source, adjusts its camera position, then
Fixture is opened, bundle fiber is laid flat and is arranged on clamp block, then is closed at left and right fixture and fixes bundle fiber.Start auto-comb
Program is managed, carding mechanism carries out twice of combing to bundle fiber automatically.Then air draft system starts, and left bothrium and right bothrium start to inhale
Wind, at the same two Front cutting tools between clamp block and collet by fibre cutting, the fiber of cutting sucked respectively therewith left bothrium and
In right bothrium, it is collected into weighing pan and weighs by left delivery pipe and right delivery pipe therewith.Start process of measurement, at this time
Dynamic folder displacement mechanism, CCD imaging system, electroacoustic measurement apparatus start simultaneously at work.Mobile stepper motor passes through mobile screw and shifting
Dynamic nut drives dynamic folder displacement mechanism to move right and stretches to bundle fiber, tests pressley strength.
Using 66 (2114 μm) tests of combing wool, tensile speed 10mm/min, distance is 10mm.The environment of experiment
Condition: temperature is 20 DEG C, relative humidity 65%.Without slipping phenomenon, and intensity is slightly above the intensity of common collet.
Embodiment 2: yarn
Sample selects 65/ cotton of terylene, 35 yarn test, tensile speed 500mm/min, distance 500mm.The environment item of experiment
Part: temperature is 20 DEG C, relative humidity 65%.
Embodiment 3: fabric
Sample selects linen rib fabric to carry out radial drawing, fabric size 200mm × 50mm, tensile speed 10mm/
Min, distance 100mm.The environmental condition of experiment: temperature is 20 DEG C, relative humidity 65%.
Embodiment 4: membrane material
Sample selects PVC film structural material, and base fabric is polyester fiber, two-sided to use polyvinyl chloride resin coating, applies again outside coating
Cover a layer polypropylene acid resin.Sample size is 150mm × 25mm；Distance is 75mm, tensile speed 50mm/min.Experiment
Environmental condition: temperature is 20 DEG C, relative humidity 65%.
Sample selected by embodiment 2~4 is divided into 65/ cotton of terylene, 35 yarn, aramid fiber 1313/cotton blended fabric, PVC film material
Material stretches clamper using the bundle fiber of normal pressure gradient distribution of the invention, and specific steps are removed without starting automatic carding machine
Outside structure is combed, remaining operation is the same as embodiment 1.
Examples 1 to 4 extension test specific experiment the results are shown in Table listed by 1.
Each index table of 1 tensile property of table
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the method for the present invention, can also be made for those skilled in the art
Several improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more
Dynamic, modification and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals pair according to the present invention
The variation, modification and evolution of any equivalent variations made by above-described embodiment, still fall within the range of technical solution of the present invention
It is interior.
Claims (10)
1. a kind of bundle fiber of normal pressure gradient distribution stretches clamper collet, it is characterised in that: gathered by the hard height of clamping face
Soft metal layer (2) and the bottom bloom for fixing (3) of nitride layer (1), intermediate supports and flexible successively bond composition；
The hard high-polymer layer (1) and soft metal layer (2) be mutually agree with it is trapezoidal, collet clamping face to fibre bundle edge
The normal pressure of draw direction formation gradient distribution.
2. a kind of bundle fiber of normal pressure gradient distribution as described in claim 1 stretches clamper collet, it is characterised in that: institute
Hard high-polymer layer (1) is stated along draw direction thickness distribution gradient；The soft metal layer (2) along draw direction thickness in gradient
Distribution, and soft metal layer (2) thickness change is opposite with hard high-polymer layer (1) thickness change.
3. a kind of bundle fiber of normal pressure gradient distribution as described in claim 1 stretches clamper collet, it is characterised in that: institute
Stating hard high-polymer layer (1) is the high polymer piece that clamping face is smooth, adhesive surface is smooth.
4. a kind of bundle fiber of normal pressure gradient distribution as claimed in claim 3 stretches clamper collet, it is characterised in that: institute
Stating high polymer piece is polyester piece, polyimide piece or hard rubber sheet.
5. a kind of bundle fiber of normal pressure gradient distribution as described in claim 1 stretches clamper collet, it is characterised in that: institute
It is smooth to state soft metal layer (2) one side bonding with hard high-polymer layer (1), the soft metal layer (2) and bloom (3) are bonding
One side it is flat and smooth or have raised line；The bloom (3) and soft metal layer (2) it is bonding correspond on one side it is flat and smooth or
With fluted.
6. a kind of bundle fiber of normal pressure gradient distribution as claimed in claim 1 or 5 stretches clamper collet, feature exists
In: the soft metal layer (2) is stainless steel substrates, nickel alloy sheet, leaded steel alloy sheet or alloy aluminium flake.
7. a kind of bundle fiber of normal pressure gradient distribution as described in claim 1 stretches clamper collet, it is characterised in that: institute
Hard high-polymer layer (1) thickness is stated equal to bundle fiber diameter.
8. a kind of bundle fiber of normal pressure gradient distribution as described in claim 1 stretches clamper collet, it is characterised in that: institute
It states bloom (3) and is directly embedded into clamper seat；Or the bloom (3) is consolidated by screw and clamper seat, bloom (3) side
Or bottom surface is equipped with the screw hole for consolidation.
9. a kind of bundle fiber of normal pressure gradient distribution as described in claim 1 stretches clamper collet, it is characterised in that: institute
It states collet to be individually used in combination with lower plane body, or in pairs, symmetrically uses.
10. the use that a kind of bundle fiber of normal pressure gradient distribution as described in any one of claims 1 to 9 stretches clamper collet
On the way, it is characterised in that: for uniform, anti-skidding and preventing damage the clamping to high polymer material, to realize that strength measures；The height
Polymer material includes but is not limited to bundle fiber, film, fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811509481.3A CN109540657B (en) | 2018-12-11 | 2018-12-11 | Beam fiber stretching clamp holder chuck with positive pressure gradient distribution and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811509481.3A CN109540657B (en) | 2018-12-11 | 2018-12-11 | Beam fiber stretching clamp holder chuck with positive pressure gradient distribution and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109540657A true CN109540657A (en) | 2019-03-29 |
| CN109540657B CN109540657B (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811509481.3A Active CN109540657B (en) | 2018-12-11 | 2018-12-11 | Beam fiber stretching clamp holder chuck with positive pressure gradient distribution and application |
Country Status (1)
| Country | Link |
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| CN (1) | CN109540657B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114486996A (en) * | 2022-01-27 | 2022-05-13 | 福建工程学院 | Intelligent control rock thermal expansion tester and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114486996B (en) * | 2022-01-27 | 2023-11-03 | 福建工程学院 | Intelligent control rock thermal expansion tester and application method thereof |
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| Publication number | Publication date |
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| CN109540657B (en) | 2023-04-21 |
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