CN1332192C - Tensile fixture for tensile mechanical property test of thin film material - Google Patents
Tensile fixture for tensile mechanical property test of thin film material Download PDFInfo
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- CN1332192C CN1332192C CNB2003101130911A CN200310113091A CN1332192C CN 1332192 C CN1332192 C CN 1332192C CN B2003101130911 A CNB2003101130911 A CN B2003101130911A CN 200310113091 A CN200310113091 A CN 200310113091A CN 1332192 C CN1332192 C CN 1332192C
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- axle
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- power bar
- crossbeam
- chuck
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Abstract
The present invention discloses a stretching clamp for testing the mechanical stretching performance of film materials. The clamp comprises two clamping heads for clamping film samples, a shaft with a convex block, and a cross beam, wherein the extension direction of the cross beam is perpendicular to that of the shaft. A through hole is arranged in the middle position of the extension direction of the cross beam. One end of the shaft is embedded into the through hole and is capable of extending and shrinking along the hole. A compression spring is arranged between the convex block and the cross beam. Two force rods are symmetrically distributed at both sides of the shaft; one end of each of the force rods is respectively connected with the convex block of the shaft through a connecting rod; both ends of the connecting rod are respectively and rotatablely connected with the force rod and the convex block. The other end of each of the force rods is respectively connected with one clamping head; each of the force rods is respectively and rotatablely connected with one end of the cross beam between both ends of the force rod. The stretching clamp of the present invention has the advantages of simple structure and convenient clamping, and effectively overcomes the sliding phenomenon of samples under low temperature.
Description
Technical field
The present invention relates to employed anchor clamps in the measuring technique, more particularly, the present invention relates to a kind of stretching clamp that is suitable under low temperature environment, carrying out the membraneous material performance test.
Background technology
Stretching clamp is an one of critical component of measuring the tensile mechanical properties of material.In process of the test, the two ends of measured material sample are fixed by stretching clamp respectively, then anchor clamps are fixedlyed connected with cupping machine, testing machine is by the anchor clamps tensile sample, and measurement data is connected to control collection on the computing machine by high precision, high-sensitive instrument.Mechanical properties such as the pulling strengrth of final acquisition sample, elastic modulus, extensibility.
Along with the development of membraneous material, especially membraneous material application is at low temperatures constantly expanded, and research membraneous material mechanical property at low temperatures just seems and becomes more and more important.At present when the tensile mechanical properties of MEASUREMENTS OF THIN material, the film stretching test fixture that domestic and international testing machine factory provides adopts the screw fastening compact form usually, its friction force that mainly produces by clamping surface rubber gasket clamps the both ends of sample, carries out tension test thereby be connected with testing machine.The structure of this anchor clamps as shown in Figure 1, film sample 1 is clamped between two- layer rubber gasket 2 and 3, and is arranged on the whole in the rectangular enclosure 4, exerts pressure to rubber gasket 2 by a nut 5 that is threaded with shell 4, so that film sample 1 is clamped.
The shortcoming of this anchor clamps is:
1) anchor clamps are difficult for installation, sample centering performance is bad;
2) when measuring the tensile property of material at low temperatures, because the special nature of low temperature environment, threaded anchor clamps can produce loosening, between anchor clamps and the sample serious skidding can take place;
3) rubber gasket at this anchor clamps clamping sample place becomes fragile at low temperatures, also is not suitable for using under the low temperature.
Summary of the invention
The object of the present invention is to provide a kind of stretching clamp that is suitable under low temperature environment, film sample being carried out stretching mechanical property testing.
To achieve these goals, the invention provides a kind of stretching clamp that is used for the membraneous material stretching mechanical property testing, comprising:
Two are used for the chuck of clamping film sample betwixt;
An axle, this axle has a protruding block;
A crossbeam, the bearing of trend of this crossbeam are perpendicular to the bearing of trend of axle, and crossbeam has a through hole in the centre position of its bearing of trend, and an end of described axle is embedded in this through hole and can makes stretching motion along this hole;
The compression spring that between described protruding block and crossbeam, is provided with;
Be symmetrically distributed in two power bars of described axle both sides, an end of every power bar all is connected by the protruding block of connecting link with axle respectively, and the two ends of described connecting link are rotatably connected with power bar and protruding block respectively; The other end of every power bar all is connected with a chuck respectively; Every power bar all is rotatably connected with an end of described crossbeam respectively between its two ends.
Described compression spring is sheathed on the described axle.
Described power bar and chuck are rotatably connected.These anchor clamps further comprise a chute, and in described two chucks one can be fixedlyed connected with chute, and another of described two chucks is slidably disposed in the chute.
The side that is used for the clamping film sample of described chuck is a serrated-surface.
Tensile test fixture of the present invention is compared with the anchor clamps of existing use both at home and abroad, and simple in structure, convenient mounting and clamping has overcome the phenomenon that test specimen skids at low temperatures effectively, and can realize various product measurement under low temperature environment, has saved cost greatly.Cryogenic tensile anchor clamps of the present invention can be used for normal temperature and cryogenic mechanics performances such as the pulling strengrth, elastic modulus, fracture elongation of MEASUREMENTS OF THIN material.
Description of drawings
Fig. 1 is screw thread screwing type film stretching anchor clamps synoptic diagram;
Fig. 2 is the structural representation of stretching clamp of the present invention;
Fig. 3 is the structural representation of the axle in the stretching clamp of Fig. 2, and wherein (a) is front elevation, (b) is side view;
Fig. 4 is the synoptic diagram of the crossbeam in the stretching clamp of Fig. 2, and wherein (a) is front elevation, (b) is the cut-open view of A-A line, (c) is the cut-open view along the B-B line;
Fig. 5 is the synoptic diagram of the connecting link in the stretching clamp of Fig. 2, and wherein (a) is front elevation, (b) is the cut-open view of C-C line;
Fig. 6 is the synoptic diagram of the power bar in the stretching clamp of Fig. 2, and wherein (a) is front elevation, (b) is the cut-open view of D-D line;
Fig. 7 is the structural representation of the chuck in the stretching clamp of Fig. 2;
Fig. 8 is the structural representation of the chute in the stretching clamp of Fig. 2;
Fig. 9 is the structural representation of the chuck of fixedlying connected with the chute of Fig. 8.
Specific embodiments
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 2 is the integral body assembling synoptic diagram of stretching clamp of the present invention.As shown in Figure 2, stretching clamp of the present invention is to be left-right symmetric along axle 10 basically.These anchor clamps comprise that two are used for the chuck 30 and 30 ' of clamping film sample betwixt, and an axle 10 that has protruding block 13.One end of axle 10 embeds a crossbeam 20, and the bearing of trend of this crossbeam 20 is perpendicular to the bearing of trend of axle 10.Crossbeam 20 has a through hole 21 (Fig. 4) in the centre position of its bearing of trend, an end of axle 10 is embedded in this through hole 21 and can makes stretching motion along this hole, and this will describe in detail in the content below.On the axle between protruding block 13 and the crossbeam 20, be with a compression spring 50.
As shown in Figure 2, two power bars 60 and 60 ' are symmetrically distributed in the both sides of axle 10, and power bar 60 is connected with protruding block 13 with 70 ' by connecting link 70 respectively with an end of 60 '.The two ends of connecting link 70 are rotatably connected with power bar 60 and protruding block 13 respectively, and the two ends of connecting link 70 ' are rotatably connected with power bar 60 ' and protruding block 13 respectively.Power bar 60,60 ' the other end are connected with chuck 30,30 ' respectively.Power bar 60 and 60 ' is rotatably connected with an end of crossbeam 20 respectively between its two ends.
To describe the structure of each ingredient of stretching clamp of the present invention below in detail.
Referring to axle 10 shown in Figure 3 and in conjunction with Fig. 2.One end of axle 10 has a perforate 12, and this perforate 12 is connected with cupping machine when experiment.Below perforate 12, axle 10 has a stopper 11, and this stopper 11 guarantees that axle 10 is connected centering with cupping machine when experiment.Stopper 11 can be for being fixed on the discrete component of axle on 10, also can with axle 10 monolithic moldings.The below of stopper 11 is fixed with a protruding block 13, and this protruding block 13 is preferably integrally formed with axle 10.Have a hole 14 on the protruding block 13, for example be used to hold securing members such as pin, so that the end of protruding block 13 with connecting link 70 and 70 ' is rotatably connected.The other end 15 of axle 10 is contained in the through hole 21 (Fig. 4) of crossbeam 20.In Fig. 2, be with a compression spring 50 on the axle 10, between protruding block 13 and crossbeam 20.
Referring to crossbeam shown in Figure 4 20 and in conjunction with Fig. 2.See more clearly in Fig. 4 (b), crossbeam 20 is essentially " worker " shape, and position has a through hole 21 in the middle of it, is used to hold an end 15 (Fig. 3) of axle 10, and an end 15 of axle 10 can be in this through hole 21 stretching motion.The two ends of crossbeam 20 have recess 22 and 22 ', are respectively applied for acceptance bar 60 and 60 '.Through hole 23 and 23 ' is arranged on recess 22 and 22 ' on every side, is used to hold for example securing member such as pin, so that power bar 60 and 60 ' is rotatably connected with crossbeam 20 respectively.As shown in Figure 2, the bearing of trend of crossbeam 20 is vertical with the direction of axle 10.
Referring to connecting link shown in Figure 5 70 and in conjunction with Fig. 2.The two ends of connecting link 70 have through hole 71 and 72.Wherein through hole 72 matches with the hole 14 (Fig. 3) on the protruding block 13, by making as securing members such as pins connecting link 70 and 13 rotating connections of protruding block.Through hole 71 is rotatably connected with an end of power bar 60.Connecting link 70 ' is identical with the structure of connecting link 70, and is connected with power bar 60 ' with protruding block 13 with symmetrical manner.
Referring to power bar 60 shown in Figure 6 and in conjunction with Fig. 2.The two ends of power bar 60 have through hole 61 and 63.Near the middle part of power bar 60 in other words between through hole 61 and 63, power bar 60 also has through hole 62.The through hole 63 of power bar 60 matches with the through hole 71 (Fig. 5) of connecting link 70, so that hold as securing members such as pins, thereby power bar 60 and connecting link 70 1 ends is rotatably connected.The through hole 62 of power bar 60 is contained in the recess 22 (Fig. 4) with crossbeam 20, matches with the through hole 23 (Fig. 4) of crossbeam 20 holding as securing members such as pins, thereby power bar 60 and crossbeam 20 1 ends are rotatably connected.The through hole 61 of power bar 60 is used for being connected with chuck 30.Power bar 60 ' is identical with power bar 60 structures, and is connected with connecting link 70 ', crossbeam 20 and chuck 30 ' with symmetrical manner.
Referring to chuck shown in Figure 7 30,30 ' and in conjunction with Fig. 2.Chuck 30 has a recess 32, is used for an end of acceptance bar 60.The blind hole 31 of passing recess 32 matches with the through hole 61 (Fig. 6) of power bar 60 holding as securing members such as pins, thereby an end of power bar 60 is connected with chuck 30.The side 33 that chuck 30 is used for the clamping film sample preferably has jagged surperficial (not shown), so that the holding force of enhancing to be provided.
As shown in Figure 2, stretching clamp of the present invention is when work, direction along arrow 90 and 90 ' is pressed power rail 60 and 60 ', under the drive of connecting link 70 and 70 ', protruding block 13 drives axle 10 downward compression springs 50, one end 15 of axle 10 further stretches in the through hole 21 of crossbeam 20, or until passing this through hole 21.Simultaneously, chuck 30 and 30 ' moves along arrow 100 and 100 ' direction respectively in chute 80 under the drive of power bar 60 and 60 '.The film sample (not shown) is placed between two chucks 30 and 30 ' then, loosen power bar 60 and 60 ', spring 50 upwards promotes protruding block 13, under the drive of connecting link 70 and 70 ', power bar 60 and 60 ' opposite direction motion along arrow 90 and 90 ', and chuck 30 and 30 ' under the drive of power bar 60 and 60 ' in chute 80 respectively along the motion of the opposite direction of arrow 100 and 100 ', at last the film sample (not shown) is clamped.
After treating that anchor clamps install sample, the through hole on the axle 10 12 and the universal connecting shaft of testing machine are fixed with pin.Be placed at last in the airtight cryogenic tensile experiment container and measure.
Can select different spring 50 for use, to regulate the size of chuck 30 and 30 ' clamping dynamics, the serrated-surface at chuck position can effectively prevent the problem of skidding that sample occurs in experimentation.
For preventing that stretching clamp of the present invention each position that is rotatably connected in use from landing might occur test is impacted, therefore be provided with pad by connection surface, and adopting spring collar that its embedding pin depression position is fixed at gasket surface as securing members such as pins.
Each parts among the present invention comprise the axle 10, crossbeam 20, connecting link 70 and 70 ', power bar 60 and 60 ', chuck 30 and 30 ', the chute 80 that have protruding block 13, all can adopt low temperature resistant stainless steel 1Cr18Ni9Ti material to prepare.
The results showed, stretching clamp of the present invention can well be applied to the stretching mechanical of low temperature environment 77K and measure, can be accurately under room temperature and low temperature, reliably, stably pulling strengrth, elastic modulus, the fracture elongation of MEASUREMENTS OF THIN compound substance, anchor clamps itself do not have influence to test findings.All in the gauge length scope of standard code, distortion evenly shows that the design of these anchor clamps retaining part is comparatively reasonable for the work shoulder place not damaged of sample, fracture location; Show that with the sample test result data repeatability is better, can think that anchor clamps itself do not have influence substantially to measuring through a plurality of simultaneously.
Claims (5)
1, a kind of stretching clamp that is used for the membraneous material stretching mechanical property testing is characterized in that, this stretching clamp comprises:
Two are used for the chuck of clamping film sample betwixt;
An axle, this axle has a protruding block;
A crossbeam, the bearing of trend of this crossbeam are perpendicular to the bearing of trend of axle, and crossbeam has a through hole in the centre position of its bearing of trend, and an end of described axle is embedded in this through hole and can makes stretching motion along this hole;
The compression spring that between described protruding block and crossbeam, is provided with;
Be symmetrically distributed in two power bars of described axle both sides, an end of every power bar all is connected by the protruding block of connecting link with axle respectively, and the two ends of described connecting link are rotatably connected with power bar and protruding block respectively; The other end of every power bar all is connected with a chuck respectively; Every power bar all is rotatably connected with an end of described crossbeam respectively between its two ends.
2, stretching clamp according to claim 1 is characterized in that, described compression spring is sheathed on the described axle.
3, stretching clamp according to claim 1 is characterized in that, described power bar and chuck are rotationally connected.
4, stretching clamp according to claim 3 is characterized in that, further comprises a chute, and in described two chucks one is fixedlyed connected with chute, and another of described two chucks is slidingly arranged in the chute.
5, stretching clamp according to claim 1 is characterized in that, the side that is used for the clamping film sample of described chuck is a serrated-surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101130911A CN1332192C (en) | 2003-12-26 | 2003-12-26 | Tensile fixture for tensile mechanical property test of thin film material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101130911A CN1332192C (en) | 2003-12-26 | 2003-12-26 | Tensile fixture for tensile mechanical property test of thin film material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1635355A CN1635355A (en) | 2005-07-06 |
| CN1332192C true CN1332192C (en) | 2007-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101130911A Expired - Fee Related CN1332192C (en) | 2003-12-26 | 2003-12-26 | Tensile fixture for tensile mechanical property test of thin film material |
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| Country | Link |
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| CN (1) | CN1332192C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100405040C (en) * | 2005-08-15 | 2008-07-23 | 清华大学 | Film stretching loading device under scanning microscopy environment and film distortion measurement method |
| CN102621014B (en) * | 2012-03-16 | 2014-02-19 | 北京工业大学 | Bidirectional crossly stretched multi-shaft fatigue test device with micro thin film structure |
| CN104297073B (en) * | 2014-10-07 | 2017-04-19 | 成都市嘉洲新型防水材料有限公司 | Device and method for testing cryogenic property of simulation waterproof membrane material under stress condition |
| CN104614234A (en) * | 2015-01-29 | 2015-05-13 | 南京理工大学 | Film material tensile experiment clamp |
| CN105806707A (en) * | 2016-05-06 | 2016-07-27 | 苏州中国汽车零部件产业基地发展有限公司 | High-speed tensile test device for battery film material |
| CN110672407B (en) * | 2019-10-25 | 2022-03-08 | 商丘市锦华包装科技有限公司 | Tensile testing machine for detecting stretching degree of packaging bag |
| CN110658068B (en) * | 2019-10-30 | 2024-04-12 | 重庆科技学院 | Clamp for detecting tensile property of brittle plate |
| CN111089800A (en) * | 2019-12-30 | 2020-05-01 | 重庆瑞霆塑胶有限公司 | Film finished product quality detection process |
| CN111089801A (en) * | 2019-12-30 | 2020-05-01 | 重庆瑞霆塑胶有限公司 | Film finished product quality detection device |
| CN111272648A (en) * | 2020-02-24 | 2020-06-12 | 江苏大学 | Clamp for testing tensile property of rubber material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313419A (en) * | 1995-05-17 | 1996-11-29 | Shimadzu Corp | Lever type extension indicator |
| DE10030224C1 (en) * | 2000-06-20 | 2001-12-13 | Joerg Gasmann | Miniature gripper head for rupture testing e.g. for microchip solder or weld connections, has gripper finger for application of rupture force released via shape memory actuator |
| CN2528756Y (en) * | 2002-01-26 | 2003-01-01 | 涟源钢铁集团有限公司 | Gripping apparatus for metal blank |
| CN2585840Y (en) * | 2002-10-18 | 2003-11-12 | 青岛港务局 | Automatic loading/unloading clamp for large barrel goods |
| CN2665698Y (en) * | 2003-12-30 | 2004-12-22 | 中国科学院理化技术研究所 | Stretching clamp for tension mechanical property test of thin film material |
-
2003
- 2003-12-26 CN CNB2003101130911A patent/CN1332192C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313419A (en) * | 1995-05-17 | 1996-11-29 | Shimadzu Corp | Lever type extension indicator |
| DE10030224C1 (en) * | 2000-06-20 | 2001-12-13 | Joerg Gasmann | Miniature gripper head for rupture testing e.g. for microchip solder or weld connections, has gripper finger for application of rupture force released via shape memory actuator |
| CN2528756Y (en) * | 2002-01-26 | 2003-01-01 | 涟源钢铁集团有限公司 | Gripping apparatus for metal blank |
| CN2585840Y (en) * | 2002-10-18 | 2003-11-12 | 青岛港务局 | Automatic loading/unloading clamp for large barrel goods |
| CN2665698Y (en) * | 2003-12-30 | 2004-12-22 | 中国科学院理化技术研究所 | Stretching clamp for tension mechanical property test of thin film material |
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| CN1635355A (en) | 2005-07-06 |
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Granted publication date: 20070815 Termination date: 20100126 |