CN219890865U

CN219890865U - Sample forming device for single fiber pull-out test sample

Info

Publication number: CN219890865U
Application number: CN202321157808.1U
Authority: CN
Inventors: 李媛媛; 吴建华; 吴振飞; 肖齐玥
Original assignee: Ding Sheng Silk Co ltd
Current assignee: Ding Sheng Silk Co ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-10-24
Anticipated expiration: 2033-05-15

Abstract

The utility model provides a sample forming device for a single fiber pull-out test sample, which comprises a base, a mold detachably arranged on the base, a support rod fixed on the base and provided with scales along the vertical direction, and a first fiber clamp and a second fiber clamp which are arranged on the support rod at certain intervals along the vertical direction, wherein the mold is used for containing resin forming a matrix, the first fiber clamp and the second fiber clamp are used for clamping fibers inserted into the matrix, and the first fiber clamp and the second fiber clamp can be operated to move up and down relative to the support rod. The sample forming device is simple in structure, convenient to operate and good in flexibility, can accurately measure the fiber embedding depth, ensures the vertical state of fibers in a sample, and ensures the quality of the sample.

Description

Sample forming device for single fiber pull-out test sample

[ field of technology ]

The utility model relates to the field of die manufacturing, in particular to a sample forming device for a sample for a single fiber pull-out test.

[ background Art ]

The bonding state of the matrix and the fibers in the fiber reinforced resin matrix composite is one of the main factors influencing the mechanical properties of the composite, and the prior interface research and test methods are more, wherein the test method of single fiber extraction experiment is the simplest. However, in the process of producing a sample for a single fiber extraction test, it was found that the diameters of the single fibers were relatively small and the lengths of the single fibers which could be buried in the matrix were short, making the sample was difficult, and it was difficult to ensure that the fibers and the resin matrix remained in a perpendicular state. Therefore, a simple device for molding the single fiber pulling test sample, which is labor-saving, simple and convenient to manufacture and good in sample molding, needs to be developed.

[ utility model ]

The utility model aims to provide a sample forming device for a sample for a single fiber extraction test, which has the advantages of simple structure, convenient operation and good flexibility, can accurately measure the fiber embedding depth, ensures the vertical state of the fiber in the sample, and ensures the quality of the sample.

In order to achieve the above object, the present utility model provides a sample molding device for a sample for a single fiber pull-out test, wherein the sample molding device includes a base, a mold detachably provided to the base, a support bar fixed to the base and provided with graduations in a vertical direction, a first fiber holder and a second fiber holder spaced apart by a certain distance in the vertical direction and each provided to the support bar, the mold being for accommodating a resin constituting a base body, the first fiber holder and the second fiber holder being for holding a fiber inserted into the base body, and the first fiber holder and the second fiber holder being each operatively movable up and down with respect to the support bar.

As a further improvement of an embodiment of the present utility model, the sample molding device further includes a first beam and a second beam connected to the support bar, and the other end of the first beam is connected to the first fiber jig, and the other end of the second beam is connected to the second fiber jig.

As a further improvement of an embodiment of the present utility model, the first beam is provided with a first pointer for indicating the scale, and the second beam is provided with a second pointer for indicating the scale.

As a further improvement of an embodiment of the present utility model, the first cross beam includes a first connecting rod connected to the first fiber fixture, and a first abutment seat sleeved on the periphery of the first connecting rod and abutted against the support rod, and the first pointer is disposed on the first abutment seat.

As a further improvement of one embodiment of the present utility model, the first abutment is square, and the first pointer is disposed on one of the corners of the first abutment.

As a further improvement of an embodiment of the present utility model, the first beam is connected to the support bar by a first bolt, and the second beam is connected to the support bar by a second bolt.

As a further improvement of an embodiment of the present utility model, the support bar is provided with a guide groove extending in a vertical direction, and the first bolt and the second bolt extend into the guide groove.

As a further improvement of one embodiment of the present utility model, the mold is provided in a square shape.

As a further improvement of an embodiment of the present utility model, the mold includes four sidewalls enclosing the accommodating space, and a bottom plate provided on the four sidewalls and extending outward of the accommodating space, and the bottom plate is fixed to the base by a plurality of fasteners.

As a further improvement of an embodiment of the present utility model, the support rod is detachably disposed on the base.

Compared with the prior art, the utility model has the following beneficial effects: the mould holds the base member, first fibre anchor clamps and second fibre anchor clamps are used for the centre gripping to insert the fibre in the base member, and two fibre anchor clamps straighten the fibre, make the fibre remain vertical state throughout to avoid the resin fibre skew in the solidification process, ensured the quality of sample.

The sample molding device is applicable to samples for single fiber extraction tests of various fiber functional materials and resin matrixes.

The single fiber is embedded into the matrix, so that the fiber embedding depth can be accurately measured.

Furthermore, the resin is convenient to take out after molding, the mold is only required to be disassembled, a certain force is applied to the bottom, the sample is molded well, and the single fiber drawing experiment can be directly carried out. In conclusion, the sample forming device is simple in structure, convenient to operate, good in flexibility, wide in application range and capable of ensuring the quality of samples.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a schematic perspective view of a sample molding apparatus for a single fiber draw-out test sample according to an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a first fiber clamp in the sample molding apparatus of FIG. 1;

FIG. 3 is a schematic perspective view of a first cross member and a first pointer of the sample molding apparatus of FIG. 1;

fig. 4 is a schematic perspective view of a second cross member and a second hand of the sample molding apparatus of fig. 1.

[ detailed description ] of the utility model

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms "comprising" and "having" and any variations thereof herein are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1 to 4, the present utility model provides a sample molding apparatus for a sample for a single fiber extraction test, the sample molding apparatus including a base 1, a mold 6 detachably provided to the base 1, a support bar 2 fixed to the base 1 and provided with graduations in a vertical direction, a first fiber holder 4 and a second fiber holder 8 spaced apart in the vertical direction and each provided to the support bar 2, the mold 6 for accommodating a resin constituting a matrix, the first fiber holder 4 and the second fiber holder 8 for holding a fiber inserted into the matrix, and the first fiber holder 4 and the second fiber holder 8 each being operable to move up and down with respect to the support bar 2.

In this embodiment, the mold 6 accommodates a substrate, and the first fiber clamp 4 and the second fiber clamp 8 are used for clamping the fibers inserted into the substrate, and the two fiber clamps straighten the fibers, so that the fibers are always kept in a vertical state, thereby avoiding the deflection of the fibers during the curing process of the resin, and ensuring the quality of the sample.

Furthermore, the resin is convenient to take out after molding, the mold 6 is only required to be disassembled, a certain force is applied to the bottom, the sample is molded well, and a single fiber drawing experiment can be directly carried out. In conclusion, the sample forming device is simple in structure, convenient to operate, good in flexibility, wide in application range and capable of ensuring the quality of samples.

The sample forming device further comprises a first cross beam 3 and a second cross beam 10 which are connected to the support rod 2, wherein the other end of the first cross beam 3 is connected with the first fiber clamp 4, and the other end of the second cross beam 10 is connected with the second fiber clamp 8.

The first beam 3 is provided with a first pointer 5 for indicating the scale, and the second beam 10 is provided with a second pointer 12 for indicating the scale.

In this embodiment, the individual fibers are embedded in the matrix to allow for very accurate measurement of the depth of the embedded fibers. The total length of the fibers is measured by the first pointer 5 and the second pointer 12, the second cross beam 10 is adjusted to leave the fibers embedded in the resin, and the length of the residual fibers is measured after curing is finished, so that the length of the fiber embedded in the matrix can be calculated.

Further, the first cross beam 3 includes a first connecting rod 14 connected to the first fiber fixture 4, and a first abutment 16 sleeved on the periphery of the first connecting rod 14 and abutted against the support rod 2, and the first pointer 5 is disposed on the first abutment 16.

The first supporting seat 16 is square, and the first pointer 5 is disposed on one of the corners of the first supporting seat 16. Specifically, the first pointer 5 is disposed at an upper corner, and the second pointer 12 is disposed at a lower corner.

The first cross member 3 is connected to the support bar 2 by a first bolt 7 and the second cross member 10 is connected to the support bar 2 by a second bolt 18.

In this embodiment, the first fiber clamp 4 and the second fiber clamp 8 have the same structural form, the first beam 3 and the second beam 10 have the same structural form, and the first pointer 5 and the second pointer 12 have the same structural form. So set up for overall structure is simpler. Of course, the first fiber holder 4 and the second fiber holder 8 may be configured differently, the first beam 3 and the second beam 10 may be configured differently, and the first pointer 5 and the second pointer 12 may be configured differently.

The first fiber clamp 4 includes a base 20 and a clamping member 22 provided to the base 20, the clamping member 22 being operable to move in a horizontal direction to clamp or unclamp a fiber. The base 20 is fixed to the first cross member 3.

The support bar 2 is provided with a guide groove 24 extending in the vertical direction, and the first bolt 7 and the second bolt 18 extend into the guide groove 24. When the up-down position of the first fiber clamp 4 is adjusted, the first bolt 7 can be unscrewed, so that the first fiber clamp 4 moves up and down, and after the adjustment is finished, the first bolt 7 can be screwed. Similarly, when the up-down position of the second fiber clamp 8 is adjusted, the second bolt 18 is loosened to move the second fiber clamp 8 up-down, and after the adjustment is completed, the second bolt 18 is screwed.

Specifically, the die 6 is provided in a square shape.

Further, the mold 6 includes four side walls enclosing an accommodating space, and a bottom plate 26 disposed on the four side walls and extending out of the accommodating space, and the bottom plate 26 is fixed to the base 1 by a plurality of fasteners 25, so that the mold 6 is fixed to the base 1. When the fiber is inserted into the resin, and after the resin is molded, the fastener 25 is unscrewed to detach the bottom plate 26 from the base 1, so that the mold 6 is detached, the bottom of the mold 6 is opened, the sample can be extracted by applying a certain force to the bottom, the sample is molded, and a single fiber extraction experiment can be directly performed.

In addition, the support bar 2 is detachably provided to the base 1. Specifically, the support rod 2 is fixed to the base 1 by fastening bolts.

The foregoing is merely one specific embodiment of the utility model, and any modifications made in light of the above teachings are intended to fall within the scope of the utility model.

Claims

1. The utility model provides a sample forming device of sample for single fibre pull-out test, its characterized in that, sample forming device include the base, detachably set up in the mould of base, be fixed in the base and be equipped with the bracing piece of scale along vertical direction, along the certain interval of vertical direction interval and all set up in first fibre anchor clamps and the second fibre anchor clamps of bracing piece, the mould is used for holding the resin that constitutes the base member, first fibre anchor clamps and second fibre anchor clamps are used for the centre gripping to insert the fibre in the base member, just first fibre anchor clamps and second fibre anchor clamps all can be operated for the bracing piece reciprocates.

2. The sample molding apparatus of claim 1, further comprising a first cross member and a second cross member connected to said support bar, wherein the other end of said first cross member is connected to said first fiber jig, and wherein the other end of said second cross member is connected to said second fiber jig.

3. The sample molding apparatus of claim 2, wherein said first beam has a first pointer thereon indicating a scale, and said second beam has a second pointer thereon indicating a scale.

4. The apparatus according to claim 3, wherein the first cross member includes a first connecting rod connected to the first fiber clamp and a first abutment sleeved on the periphery of the first connecting rod and abutting against the support rod, and the first pointer is disposed on the first abutment.

5. The apparatus of claim 4, wherein the first support is square, and the first pointer is disposed on one of the corners of the first support.

6. The sample molding apparatus of claim 2, wherein said first cross member is connected to said support bar by a first bolt and said second cross member is connected to said support bar by a second bolt.

7. The sample molding apparatus according to claim 6, wherein said support bar is provided with a guide groove extending in a vertical direction, and said first bolt and said second bolt extend into said guide groove.

8. The sample molding apparatus of claim 1, wherein said mold is configured as a square.

9. The apparatus according to claim 8, wherein the mold includes four side walls defining the accommodation space, and a bottom plate provided on the four side walls and extending outward of the accommodation space, and the bottom plate is fixed to the base by a plurality of fasteners.

10. The sample molding apparatus of claim 1, wherein said support rod is detachably disposed to said base.