CN217211890U

CN217211890U - Sample stretching clamp

Info

Publication number: CN217211890U
Application number: CN202220308724.2U
Authority: CN
Inventors: 王妍; 高占盛; 王磊; 何亮亮
Original assignee: Xian Fast Auto Drive Co Ltd
Current assignee: Xian Fast Auto Drive Co Ltd
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-08-16
Anticipated expiration: 2032-02-15

Abstract

The utility model discloses a specimen tensile fixture, which comprises a first fixture main body, a second fixture main body, a pressing block and a fixing groove; the two end faces, close to each other, of the first clamp main body and the second clamp main body are abutted, and the two end faces, far away from each other, of the first clamp main body and the second clamp main body are respectively connected with the testing machine; a clamping groove is formed in the end face, close to the first clamp body and the second clamp body, of the first clamp body, a clamping body is arranged in the clamping groove, and a sample is fixed on the clamping body; the terminal surface that second anchor clamps main part and first anchor clamps main part are close to mutually is provided with bellied line, carries out the centre gripping through the cooperation of second anchor clamps main part and first anchor clamps main part to the whole part of centre gripping inslot and fixes, fixes step by step, has consolidated the fixed stability of sample, avoids the sample slippage, has solved prior art, and the technical problem of the easy slippage of sample.

Description

Sample stretching clamp

Technical Field

The utility model belongs to the technical field of tensile test, a sample tensile fixture is related to.

Background

To the rectangular shape sample of film class, tensile anchor clamps use two cylinders that are parallel to each other and arrange from top to bottom as clamping device in the trade at present, go up the cylinder and can remove along the pulling force direction at the anchor clamps main part, guarantee that the distance between two cylinders is adjustable, during the use, twine the sample on last clamping cylinder, adopt the pulling force to press from both sides tightly, the pulling force is big more, and the clamp force is big more between two cylinders to guarantee that the sample does not take off at the experimentation.

However, the device has a large requirement on the length of the sample, requires the length of the clamping end to be long, and causes inconvenience and great difficulty in sampling operation when the sample needs to be cut from a large film. The fixture is not provided with a centering device to ensure that the axial direction of the sample is completely parallel to the tensile direction, and the surfaces of some films are very smooth, so that the risk of slipping still exists under the condition of insufficient friction force.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem among the prior art, provide a sample tensile anchor clamps.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a specimen tensile clamp comprises a first clamp body, a second clamp body and a clamping body;

one end of the first clamp main body is connected with one end of the second clamp main body, the other end of the first clamp main body is connected with the testing machine, and the other end of the second clamp main body is connected with the testing machine;

a clamping groove is formed in the end face, close to the first clamp main body and the second clamp main body, of the first clamp main body, a clamping body is arranged in the clamping groove, and a sample is fixed on the clamping body;

and raised grains are arranged on the end face, close to the first clamp main body, of the second clamp main body.

The utility model discloses a further improvement lies in:

the clamping body comprises a fixing groove and a pressing block;

the fixed slot sets up in the centre gripping inslot, some settings of sample are in the fixed slot, and the outside of sample is provided with the compact heap, and the compact heap joint is in the inside of fixed slot.

The inside in centre gripping groove is provided with a plurality of groups centre gripping steps, and every group centre gripping step symmetry sets up the inside both sides of centre gripping inslot, and every group centre gripping groove sets gradually by dark to shallowly, and every group centre gripping step is by dark interval crescent to shallowly, the centre gripping body sets gradually between the different centre gripping steps of every group.

Four groups of clamping steps are arranged from deep to shallow.

And the end face of each group of clamping steps, which is far away from the bottom of the clamping groove, is provided with raised grains.

The bottom of centre gripping groove is provided with bellied line.

The fixed slot is U type structure, is provided with first rubber gasket on the bottom terminal surface of fixed slot, be provided with second rubber gasket on the terminal surface that compact heap and sample are close to mutually.

The material of fixed slot is metal iron, and thickness is 3 mm.

The compressing block is made of hard magnetic materials.

The convex lines on the second clamp main body are arranged in a cross structure.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a tensile anchor clamps of sample, the centre gripping groove has been seted up in the inside of first anchor clamps main part, the centre gripping inslot carries out fixed centre gripping to the sample through the inside cramping body, it is fixed to carry out the centre gripping to the whole part of centre gripping inslot through the cooperation of second anchor clamps main part and first anchor clamps main part simultaneously, fixed step by step, the fixed stability of sample has been consolidated, avoid the sample slippage, the centre gripping body of centre gripping inslot also can guarantee the centering and the not slope of sample simultaneously, make sample length direction and pulling force direction parallel.

Further, the utility model discloses in, the inside in centre gripping groove is provided with a plurality of groups centre gripping steps, and the distance between every group centre gripping step is different, can adapt to not unidimensional cramping body, corresponds not unidimensional sample.

Further, the utility model discloses in, the bottom in centre gripping groove is provided with bellied line, has increased the frictional force between centre gripping groove and the holding body, prevents the slippage.

Further, the utility model discloses in, be provided with the rubber gasket on the bottom terminal surface of fixed slot and the terminal surface that compact heap and sample are connected, increased each other and the sample between frictional force, prevent under the effect of power, the sample slippage.

Further, the utility model discloses in, the material of compact heap is the hard magnetic material, fixes the sample through magnetic adsorption between compact heap and the fixed slot, and the dismouting is more convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a view of the structure of a first clamp body of the present invention;

fig. 2 is another view angle structure diagram of the first clamp main body of the present invention;

fig. 3 is a structure diagram of the second fixture main body of the present invention.

Wherein: 1-a first clamp body; 2-a second clamp body; 3-a compaction block; 4, fixing the groove; 5-a first rubber gasket; 6-testing the sample; 7-second rubber gasket.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "horizontal", "inner" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships usually placed when the products of the present invention are used, the description is merely for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific direction, be constructed and operated in a specific direction, and therefore, cannot be understood as a limitation to the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the term "horizontal", if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings:

referring to fig. 1-3, the utility model discloses a sample tensile fixture, including first anchor clamps main part 1, second anchor clamps main part 2, compact heap 3, fixed slot 4, first rubber gasket 5, sample 6 and second rubber gasket 7.

The embodiment of the utility model discloses tensile anchor clamps mainly include two parts, first anchor clamps main part 1 and second anchor clamps main part 2, and wherein first anchor clamps main part 1 and second anchor clamps main part 2 adopt the disconnect-type structure, and the terminal surface that two anchor clamps main parts were kept away from mutually is connected with the testing machine respectively, and the terminal surface that first anchor clamps main part 1 and second anchor clamps main part 2 were close to mutually offsets through the effect of testing machine, fixes the sample of setting in the middle.

The specific fixing mode is as follows:

the centre gripping groove has been seted up on the terminal surface that first anchor clamps main part 1 and second anchor clamps main part 2 are connected, and the inside joint in centre gripping groove has the supporting body, and the supporting body includes fixed slot 4 and compact heap 3:

wherein, the inside in the centre gripping groove of fixed slot 4 joint, the inside at fixed slot 4 of compact heap 3 joint, sample 6 sets up between fixed slot 4 and compact heap 3, and compact heap 3 and the cooperation of fixed slot 4 carry out fixed centre gripping to sample 6.

The embodiment of the utility model provides an in, it has first rubber gasket 5 and second rubber gasket 7 to bond respectively on the terminal surface that fixed slot 4 and sample 6 are connected and compact heap 3 and sample 6 are connected, has consolidated each other and sample 6 between frictional force, has reduced the risk of sample slippage.

The embodiment of the utility model provides an in, the inside in centre gripping groove is provided with 4 groups of centre gripping steps, and every group centre gripping step has two, and the symmetry sets up in the inside in centre gripping groove, and every group centre gripping step sets gradually by dark to shallowly, and distance between every group centre gripping step also by dark to shallowly grow in proper order simultaneously, and fixed slot 4 is between two centre gripping steps of different distances according to size joint, the embodiment of the utility model provides an in, by the distance between the four group's centre gripping steps of dark to shallowly be 16mm, 21mm, 26mm and 31mm respectively.

The embodiment of the utility model provides an in, fixed slot 4's structure is U type structure, sets up the cross line on the bottom terminal surface of centre gripping inslot portion, when 4 joints of fixed slot are in the bottommost, can increase and fixed slot 4 between frictional force, prevent the slippage, also set up the cross line on the terminal surface of being connected bottom every group centre gripping step and fixed slot simultaneously.

The embodiment of the utility model provides an in, be covered with the cross line on the terminal surface that second anchor clamps main part 2 and first anchor clamps main part 1 are connected, can consolidate the frictional force between two anchor clamps main parts, when using, first anchor clamps main part 1 and second anchor clamps main part 2 press from both sides fixed slot 4 and compact heap 3 tightly, can realize the centering effect, guarantee that sample 6 does not incline, can guarantee that sample 6 length direction is parallel with the pulling force direction, there is great coefficient of friction between first rubber gasket 5 and second rubber gasket 7 and the plastic film sample, can guarantee that the slippage does not take place for the sample.

The embodiment of the utility model provides an in, the material of fixed slot 4 is metallic iron, and the material of compact heap 3 is hard magnetic material, fixes sample 6 through magnetic adsorption affinity between the two, and it is more convenient to dismantle, and wherein compact heap 3 and fixed slot 4's size is the same, and the degree of depth in centre gripping groove is less than the degree of depth of fixed slot 4.

The embodiment of the utility model provides an in, 4 kinds are disclosed to compact heap 3's size, are 10mm, 15mm, 20mm and 25mm respectively.

The embodiment of the utility model provides a can be applicable to rectangular shape plastic film class sample, according to GB/T1040.3-2006, plastic film tensile sample size is wide 10 ~ 25 mm's rectangular shape sample, and general sample size adopts the width to be 10, 15, 20, 25mm, in actual work, can adjust the relative size of other parts according to sample 6's size.

The embodiment of the utility model discloses tensile fixture, simple to operate is swift, when using, installs sample 6 earlier on the testing machine with first tensile fixture main part 1 again after 4 inside clamping tightly of fixed slot, through the width that changes the fixed slot, can adapt to the sample of the size of multiple difference, has also increased the convenience of sample.

In the working process of the embodiment of the utility model,

(1) mounting the first jig main body 1 and the second jig main body 2 to the tensile testing machine;

(2) pre-clamping a tensile sample 6 by using a fixed groove 4 and a pressing block 3 with corresponding sizes;

(3) placing the fixing groove 4 into a clamping groove of the first clamp body 1, and further clamping the first clamp body 1 and the second clamp body 2;

(4) starting a tensile test until the test sample is broken;

(5) sample 6 was well centered and no slippage occurred, and sample 6 broke within the parallel length, with valid test results.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The specimen tensile clamp is characterized by comprising a first clamp body (1), a second clamp body (2) and a clamping body;

one end of the first clamp main body (1) is connected with one end of the second clamp main body (2), the other end of the first clamp main body (1) is connected with a testing machine, and the other end of the second clamp main body (2) is connected with the testing machine;

a clamping groove is formed in the end face, close to the first clamp body (1) and the second clamp body (2), of the first clamp body, a clamping body is arranged in the clamping groove, and a sample (6) is fixed on the clamping body;

and raised grains are arranged on the end surface of the second clamp main body (2) close to the first clamp main body (1).

2. Specimen tensile fixture according to claim 1, characterized in that said holding body comprises a fixation groove (4) and a holding-down block (3);

the fixed slot (4) is arranged in the clamping slot, one part of the sample (6) is arranged in the fixed slot, the outer side of the sample (6) is provided with a pressing block (3), and the pressing block (3) is clamped in the fixed slot (4).

3. The specimen tensile fixture according to claim 1, wherein a plurality of groups of holding steps are arranged inside the holding groove, each group of holding steps is symmetrically arranged at two sides inside the holding groove, each group of holding groove is sequentially arranged from deep to shallow, and each group of holding steps is gradually increased from deep to shallow, and the holding body is sequentially arranged between each group of different holding steps.

4. The specimen tensile fixture of claim 3, wherein said holding steps are arranged in four groups from deep to shallow.

5. A specimen tensile fixture according to claim 3, wherein the end face of each group of clamping steps remote from the bottom of the clamping groove is provided with raised ridges.

6. The specimen tensile fixture of claim 1, wherein the bottom of said holding groove is provided with raised ridges.

7. The specimen tensile fixture of claim 2, wherein the fixing groove (4) is of a U-shaped structure, a first rubber gasket (5) is arranged on the bottom end face of the fixing groove (4), and a second rubber gasket (7) is arranged on the end face of the pressing block (3) close to the specimen (6).

8. The specimen tensile fixture of claim 2, wherein the fixing groove (4) is made of metal iron and has a thickness of 3 mm.

9. A specimen tensile fixture according to claim 8, wherein said holding-down blocks (3) are made of hard magnetic material.

10. Specimen tensile fixture according to any of claims 1 to 9, wherein the raised ridges on the second fixture body (2) are arranged in a cross-like configuration.