CN219675624U - Sample preparation tool for testing shear strength of adhesive for railway vehicle - Google Patents

Abstract

The utility model relates to a sample preparation tool for testing the shear strength of an adhesive for a railway vehicle, which comprises the following components: an upper cell cavity assembly and a lower cell cavity assembly; the lower groove cavity assembly comprises an upper groove cavity assembly installation area, a spacing area and a groove area, wherein the spacing area is positioned between the upper groove cavity assembly installation area and the groove area; the upper cell cavity assembly is detachably connected to the upper cell cavity assembly mounting area. According to the sample preparation tool for testing the shear strength of the adhesive for the railway vehicle, the upper groove cavity assembly is detachably connected with the upper groove cavity assembly mounting area of the lower groove cavity assembly, so that the height difference between the bottoms of the upper groove cavity and the lower groove cavity is adjustable, the thickness of the adhesive layer between the upper sample preparation plate and the lower sample preparation plate can be conveniently adjusted, various shear samples can be prepared, a plurality of sample pieces can be prepared at the same time, and the sample preparation efficiency is improved.

Description

Sample preparation tool for testing shear strength of adhesive for railway vehicle

Technical Field

The utility model relates to the technical field of material bonding mechanical property test sample preparation tools, in particular to a sample preparation tool for testing the shear strength of an adhesive for a railway vehicle.

Background

With the continuous development of rail vehicles, the proportion of safety, environmental protection and speed in the design of the rail vehicles is gradually increased, and the adoption of the traditional connection modes such as light weight, stress dispersion and high bonding strength for bonding instead of welding, riveting and the like has become the necessary trend of the development of rail traffic. Therefore, the evaluation of the adhesive bonding capability is an important task for the adhesive type selection of railway vehicles. An important reference standard for evaluating the performance of the rail transit adhesive in the industry is German standard DIN6701-3, which comprehensively describes the evaluation method of the related adhesive in terms of chemical composition, physical property, mechanical property and the like of the material, and has application in testing shear strength, environmental aging and shearing test pieces in long-term stress test (creep, relaxation and fatigue). The ratio between overlap length and bond thickness in the shear test pieces specified in annex A, A.1.3.3 in DIN6701-3, is 1:4, i.e. 12mm overlap length, the bond thickness should be 3mm, and 5mm when the overlap length is 20 mm. The substrate width is between 20mm and 35mm, typically 25mm is chosen. As shown in FIG. 8, the shearing sample in the standard has a special substrate structure, is inconvenient for mass production and test, and has different bonding thickness and width specified in the standard in different application scenes, so that the shearing sample preparation method given in the standard has poor applicability, and when the shearing strength of some special substrates is required to be measured, the substrate sample needs to be processed for a long time first when the shearing sample is prepared by adopting the method, and the timeliness is poor.

Therefore, how to design a sample preparation tool for testing the shear strength of an adhesive for a railway vehicle so as to prepare shear samples with bonding dimensions meeting standard requirements and regular bonding areas without defects, and the sample preparation tool can conveniently perform mass sample preparation tests, is particularly suitable for preparing various shear samples, is a technical problem to be solved urgently at present, and is also particularly critical in evaluating the product performance of the adhesive.

Disclosure of Invention

The utility model provides a sample preparation tool for testing the shear strength of an adhesive for a railway vehicle, and aims to conveniently adjust the thickness of a glue layer between sample preparation plates so as to prepare various shear samples, and can simultaneously prepare a plurality of sample pieces and improve sample preparation efficiency.

The utility model relates to a sample preparation tool for testing the shear strength of an adhesive for a railway vehicle, which comprises the following components: an upper cell chamber assembly, and a lower cell chamber assembly; the lower groove cavity assembly comprises an upper groove cavity assembly installation area, a spacing area and a groove area, wherein the spacing area is positioned between the upper groove cavity assembly installation area and the groove area; the upper groove cavity assembly is detachably connected to the upper groove cavity assembly mounting area; the upper groove cavity assembly is provided with a plurality of upper groove cavities for accommodating upper sample plates at intervals, and a plurality of lower groove cavities for accommodating lower sample plates are formed at intervals of the groove grooves; one end of the upper sample plate extends from the end face of the upper groove cavity to the groove area of the lower groove cavity component; one end of the lower sample plate extends from the end face of the lower groove cavity to the interval area of the lower groove cavity assembly; the upper groove cavity and the lower groove cavity are arranged in pairs and coaxially, so that the part of the upper sample plate, which exceeds the end face of the upper groove cavity, is positioned right above the lower sample plate.

Optionally, the interval area is provided with a plurality of identification lines at intervals, and a plurality of identification lines are parallel and extend in the direction parallel to the width direction of the lower groove cavity.

Optionally, both sides of the upper groove cavity and the lower groove cavity in the length direction are respectively opened.

Optionally, the sample preparation tool further comprises one or more backing plates detachably connected to the upper cell cavity assembly mounting area of the lower cell cavity assembly and located below the upper cell cavity assembly.

Optionally, the installation area of the upper groove cavity assembly is provided with a groove, and the backing plate is located in the groove.

Optionally, the sample preparation tool further comprises a substrate block, wherein the substrate block is placed in the groove and is located below the backing plate.

Optionally, the lower chamber assembly, the backing plate and the upper chamber assembly are correspondingly provided with screw holes for connecting screws.

Optionally, the upper groove cavity and the lower groove cavity are 5-10 pairs.

Optionally, the bottom of the lower groove cavity is higher than the plane of the spacing region, or the bottom of the lower groove cavity and the plane of the spacing region are flush.

Optionally, the surface of the upper cell cavity assembly and the spacer region and the groove region of the lower cell cavity assembly are respectively sprayed with a teflon coating.

The beneficial effects are that:

according to the sample preparation tool for testing the shear strength of the adhesive for the railway vehicle, the upper groove cavity assembly is detachably connected with the upper groove cavity assembly mounting area of the lower groove cavity assembly, so that the height difference between the bottoms of the upper groove cavity and the lower groove cavity is adjustable, the thickness of the adhesive layer between the upper sample preparation plate and the lower sample preparation plate can be conveniently adjusted, various shear samples can be prepared, a plurality of sample pieces can be prepared at the same time, and the sample preparation efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a sample preparation tool for testing the shear strength of an adhesive for a rail vehicle according to the present utility model in an assembled state;

FIG. 2 is a schematic structural view of an embodiment of the upper and lower sample plates in the sample preparation tool for testing the shear strength of an adhesive for a railway vehicle in a state of being placed in the upper and lower groove cavities according to the present utility model;

FIG. 3 is a schematic structural view of one embodiment of a lower cell cavity assembly in a sample preparation tool for testing adhesive shear strength for rail vehicles according to the present utility model;

FIG. 4 is a side view of one embodiment of a lower cell cavity assembly of a sample preparation tool for testing adhesive shear strength for rail vehicles of the present utility model;

FIG. 5 is a schematic structural view of one embodiment of an upper cell cavity assembly in a sample preparation tool for testing adhesive shear strength for rail vehicles according to the present utility model;

FIG. 6 is a side view of one embodiment of an upper cell cavity assembly of a sample preparation tool for testing adhesive shear strength for rail vehicles of the present utility model;

FIG. 7 is a schematic structural view of one embodiment of a shim plate in a sample preparation tool for testing the shear strength of an adhesive for a rail vehicle according to the present utility model;

FIG. 8 is a schematic representation of a shear sample prepared in DIN 6701-3;

FIG. 9 is a schematic view of a sheared sample made by a sample preparation tooling of the present utility model;

description of the reference numerals

1 an upper cell cavity assembly; 2 lower groove cavity components; 3, grooves; 4, upper groove cavity;

5 lower groove cavity; 7 backing plates; 8, marking a line;

201 an upper cell assembly mounting area; 202 spacers; 203 groove regions;

31, preparing a template; 32, blanking a template; 33 glue layer.

Detailed Description

The utility model is further described in detail below by means of the figures and examples. The features and advantages of the present utility model will become more apparent from the description.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present utility model may be combined with each other as long as they do not collide with each other.

The utility model relates to a sample preparation tool for testing the shear strength of an adhesive for a railway vehicle, which is shown in figures 1-3 and comprises the following components: an upper cell chamber assembly 1, and a lower cell chamber assembly 2; wherein the lower chamber component 2 comprises an upper chamber component mounting region 201, a spacing region 202 and a recessed region 203, wherein the spacing region 202 is located between the upper chamber component mounting region 201 and the recessed region 203; the upper chamber assembly 1 is detachably connected to the upper chamber assembly mounting area 201; the upper groove cavity assembly 1 is provided with a plurality of upper groove cavities 4 for accommodating the upper sample plates 31 at intervals, and the groove area 203 is provided with a plurality of lower groove cavities 5 for accommodating the lower sample plates 32 at intervals; one end of the upper template 31 extends from the end of the upper chamber 4 toward the recessed area 203 of the lower chamber assembly 2; one end of the lower molding plate 32 extends from the end of the lower chamber 5 toward the spacer 202 of the lower chamber assembly 2; the upper tank chamber 4 and the lower tank chamber 5 are arranged in pairs and coaxially so that the portion of the upper sample plate 31 beyond the end face of the upper tank chamber 4 is located directly above the lower sample plate 32.

As shown in fig. 1, the upper and lower templates 31 and 32 may not be placed in the upper and lower chambers 4 and 5 before the sample is prepared.

As shown in fig. 2, the upper and lower templates 31 and 32 have a part located outside the upper and lower chambers 4 and 5, respectively, and at least a part of the plate surface of the upper template 31 located outside the upper chamber 4 is located above the lower template 32.

In terms of use, as shown in fig. 2, the upper template 31 is placed in the upper cavity 4, and the left end of the upper template 31 may be flush with the left end of the upper cavity 4, or may exceed or not reach the left end of the upper cavity 4; the right end of the upper shaping plate 31 may be at least partially located outside the right end of the upper chamber 4. The lower sample plate 32 is placed in the lower tank cavity 5, the right end of the lower sample plate 32 may be flush with or beyond the right end of the lower tank cavity 5, and the left end of the lower sample plate 32 may be partially located outside the left end of the lower tank cavity 5. The part of the upper sample plate 31 outside the right end of the upper groove cavity 4 and the part of the lower sample plate 32 outside the left end of the lower groove cavity 5 can be partially or completely overlapped, and the two parts can be filled with adhesive and tested for adhesive shearing strength after drying and demolding.

In fig. 1 and 2, in the sample preparing tool of the present utility model, the upper chamber component 1 is detachably connected to the upper chamber component mounting area 201 of the lower chamber component 2, so that the height difference between the bottom of the upper chamber 4 and the bottom of the lower chamber 5 can be adjusted, and further the height difference between the upper sample plate 31 placed in the upper chamber 4 and the lower sample plate 32 placed in the lower chamber 5 can be adjusted, and further the thickness of the glue layer between the upper sample plate 31 and the lower sample plate 32 can be conveniently adjusted, and further multiple shear samples can be prepared by a set of sample preparing tool, and further the shear strength under different glue layer thicknesses can be measured.

According to one embodiment of the sample preparation tool of the present utility model, as shown in fig. 1 and 3, the spacer 202 is provided with a plurality of identification lines 8 at intervals, and the plurality of identification lines 8 are parallel and extend in a direction parallel to the width direction of the lower slot 5.

The horizontal distance between the boundary line between the marking line and the upper cell assembly mounting region 201 and the spacer region 202 may be 12mm, 12.5mm, 20mm, etc., and the overlapping length (bonding length) of the upper and lower molding plates 31 and 32 may be precisely controlled by the marking line.

It should be noted that, the width direction of the upper groove cavity 4 and the lower groove cavity 5 may be the width direction of the adhesive layer; under the condition that the length of the upper sample plate 31 outside the upper groove cavity 4 is fixed, one end of the lower sample plate 32 outside the lower groove cavity 5 can be selectively flush with different mark lines by arranging the mark lines 8, so that the length of the part where the projections of the upper sample plate 31 and the lower sample plate 32 overlap in the vertical direction can be selected to prepare samples under different glue line areas, and then the shear strength can be tested under different glue line areas.

According to a specific embodiment of the sample preparation tool of the present utility model, as shown in fig. 3-6, two sides of the upper groove cavity 4 and the lower groove cavity 5 in the length direction are respectively opened.

It should be noted that, by making the two sides of the upper slot cavity 4 and the lower slot cavity 5 in the length direction open respectively, that is, as shown in fig. 2, the left and right sides of the upper slot cavity 4 and the lower slot cavity 5 open respectively, so that the lengths of the upper sample plate 31 and the lower sample plate 32 applying the present utility model are not limited, and the upper sample plate 31 and the lower sample plate 32 with different lengths can be used for sample preparation by the sample preparation tool according to the present utility model to detect the shear strength, that is, the sample preparation tool has wider applicability. The upper and lower templates 31 and 32 and the upper and lower chambers 4 and 5 may be rectangular, the upper and lower templates 31 and 32 and the upper and lower chambers 4 and 5 may correspond in size, and the upper and lower templates 31 and 32 may be movably installed in the upper and lower chambers 4 and 5.

According to one embodiment of the sample preparation tool of the present utility model, as shown in fig. 1 and 7, the sample preparation tool further comprises one or more backing plates 7, wherein the backing plates 7 are detachably connected to the upper cell cavity assembly mounting area 201 of the lower cell cavity assembly 2 and are located below the upper cell cavity assembly 1.

When the sample preparation tool is assembled, firstly, 1, 2, 3 or 4 equal number of backing plates 7 can be sequentially and horizontally placed in the upper cell cavity assembly installation area 201 (when the number is a plurality of backing plates is stacked together), or a plurality of backing plates 7 are firstly placed horizontally (stacked together) and then placed in the upper cell cavity assembly installation area 201; then, the upper cell assembly 1 is horizontally placed on the upper surface of the uppermost pad 7, and fixedly connected.

It should be noted that, the pad 7 may be provided with a plurality of pad 7 with different thickness groups, according to the above assembly mode, a pad 7 with a certain thickness may be selectively installed below the upper cavity assembly 1, and one or more pads 7 may be selectively installed to adjust the height of the plane where the bottom of the upper cavity 4 is located, so that the height difference between the upper sample plate 31 and the lower sample plate 32 may be conveniently adjusted, so as to complete sample preparation under different glue layer thicknesses, so as to prepare a plurality of shear samples, and further perform shear strength test under different glue layer thicknesses.

In summary, the sample preparation tool has stronger practicability, and the bonding thickness can be from 1mm to 5mm, thereby fully meeting the requirements of relevant standards of rail transit.

According to another embodiment of the sample preparation tool of the present utility model, as shown in fig. 3 and 4, the upper chamber assembly mounting area 201 is provided with a groove 3, and the backing plate 7 is located in the groove 3.

It should be noted that, by providing the groove 3 in the upper chamber assembly mounting area 201, or the upper chamber assembly mounting area 201 presents a downward groove shape, one or more backing plates 7 may be selectively placed horizontally in the groove 3, or backing plates 7 with different thicknesses may be selectively placed, and then the upper chamber assembly 1 is connected. The bottom of the groove 3 may be located at a lower level than the bottom of the lower groove 5. The arrangement is that firstly, the connection among the base plate 7, the upper groove cavity assembly 1 and the lower groove cavity assembly 2 is more stable, and the assembled sample preparation tool has better stability; secondly, the backing plate 7 with small thickness can be selectively placed in the groove 3, and after the backing plate is connected with the upper groove cavity assembly 1, the groove bottom of the upper groove cavity 4 can be higher or lower than the groove bottom of the lower groove cavity 5, and then the lower sample plate 32 can be lower than the upper sample plate 31, or the lower sample plate 32 can be higher than the upper sample plate 31.

According to one embodiment of the sample preparation tool of the present utility model, the sample preparation tool further comprises a substrate block, and the substrate block is placed in the groove 3 and is located below the backing plate 7.

It should be noted that the number of the substrate blocks placed in the groove 3 may be 2, 3 or 4, 6, etc., and the substrate blocks may be placed at intervals, for example, 2 substrate blocks may be placed at the left and right ends of the groove 3, respectively, and two substrate blocks may be placed in the middle. In the assembly process, the substrate block is first placed in the groove 3, then one or more backing plates 7 are placed horizontally over the substrate block, and finally the upper cell cavity assembly 1 is placed over the backing plates 7 and fixedly connected. The stability of the assembled sample preparation tool can be further enhanced by arranging the substrate blocks below the backing plate 7.

The base material block and the lower sample plate 32 may be the same material block having the same thickness, may be an adhesive base material such as an anodized aluminum alloy, carbon fiber, or glass fiber reinforced plastic, and may have a size of 125mm×25mm× (2 to 5 mm).

According to one embodiment of the sample preparation tool of the present utility model, as shown in fig. 1, 3, 5 and 7, screw holes for connecting screws are correspondingly formed in the lower chamber assembly 2, the backing plate 7 and the upper chamber assembly 1.

It should be noted that, the upper tank cavity assembly mounting area 201 of the lower tank cavity assembly 2 may be provided with screw holes at the left and right ends, the middle part of the length direction may also be provided with screw holes, correspondingly, the pad 7 and the left and right ends of the upper tank cavity assembly 1, and the middle part of the length direction may also be provided with screw holes, so that the pad 7 and the upper tank cavity assembly 1 may be firmly connected to the lower tank cavity assembly 2 through screws.

According to one specific embodiment of the sample preparation tool, the upper groove cavity 4 and the lower groove cavity 5 are 5-10 pairs.

It should be noted that, the upper slot cavity 4 and the lower slot cavity 5 may be set to different width dimension standards, for example, in 10 pairs of upper slot cavities 4 and lower slot cavities 5, the widths of the first pair and the second pair of upper slot cavities 4 and lower slot cavities 5 are the first width, the widths of the third pair and the fourth pair of upper slot cavities 4 and lower slot cavities 5 are the second width, and the widths of the fifth pair and the sixth pair of upper slot cavities 4 and lower slot cavities 5 are the third width … …, which altogether sets five width parameters. Therefore, the sample preparation tool disclosed by the utility model can be suitable for preparing shear samples with different widths, can be used for preparing different adhesive layer thicknesses under different widths, and is wider in applicability.

According to one embodiment of the sample preparation tool of the present utility model, the bottom of the lower groove cavity 5 is higher than the plane of the spacer 202, or the bottom of the lower groove cavity and the plane of the spacer are flush.

The bottom of the lower tank 5 may be about 1mm to 10mm higher than the plane of the spacer 202.

According to one embodiment of the sample preparation tool of the present utility model, the surface of the upper chamber assembly 1 and the spacer region 202 and the groove region 203 of the lower chamber assembly 2 are respectively coated with a teflon coating.

The area where the teflon coating is sprayed is an area where the teflon coating can contact with the adhesive layer, and good demolding effect can be achieved by arranging the teflon coating.

The sample preparation tool can be used for manufacturing the adhesive shear strength sample preparation tool for the railway vehicle. The lengths of the upper and lower sample plates 31 and 32 outside the upper and lower tank chambers 4 and 5 may be 46.9mm, the widths of the upper and lower sample plates 31 and 32, the upper and lower tank chambers 4 and 5 may be 25mm, and the lengths of the upper tank chamber 4 may be 433mm. The grooves 3 may have dimensions of 433mm×60mm×11.8mm, two of the pads 7 having dimensions of 433mm×60mm×2mm may be provided, and 1 of the pads having dimensions of 433mm×60mm×1mm may be provided. The upper and lower molding plates 31 and 32 may be die-molded using an aluminum material which is not easily deformed.

In summary, compared with the shearing sample shown in fig. 8, the sample preparation tool of the utility model can efficiently and accurately prepare the shearing strength sample, the bonding thickness of the prepared sample is not equal to 1mm to 5mm, the thickness of the base material is not required, and the tool can be reused. The accuracy of the sample preparation piece is greatly improved, so that the shearing mechanical properties of the elastic adhesive applied to the railway vehicle under various conditions are better evaluated. The sample preparation tool can be used for preparing a shear sample, demoulding can be easily realized after a sample is solidified, the shear sample after demoulding and simple trimming is shown in fig. 9, and a glue layer 33 is arranged between an upper sample preparation plate 31 and a lower sample preparation plate 32.

Example 1

The 10 cut samples were produced by the sample production tool shown in fig. 1 to 3, and the produced samples were measured for the length, width and thickness of the adhesive layer 33 in the 10 produced samples as shown in fig. 9, and the obtained results are shown in table 1 below:

TABLE 1

Note that, the length of the adhesive layer may refer to the dimension of the adhesive layer in the length direction of the upper template 31 or the lower template 32, and the width of the adhesive layer may refer to the dimension of the adhesive layer in the width direction of the upper template 31 or the lower template 32. The appearance of the shearing sample piece prepared by using the shearing tool is regular, and as can be seen from the table 1, the deviation of the bonding area is +/-0.1, and the prepared shearing sample piece can meet various test requirements of the railway vehicle elastic adhesive shearing test piece.

In summary, the sample preparation tool disclosed by the utility model improves the related sample preparation method and device in the existing standard, designs the shear sample preparation tool with controllable glue layer thickness, controllable bonding length, a large number of samples prepared at one time and saving bonding base materials. The tool can be used for manufacturing 10 test pieces at one time, can be used for manufacturing a large number of test pieces in a short time, can be fully used for aging test and long-term stress test, and can be used for evaluating the adhesive property of products in a relatively short time.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", etc. are directions or positional relationships based on the operation state of the present utility model are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless otherwise specifically defined and limited. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model has been described above in connection with preferred embodiments, which are, however, exemplary only and for illustrative purposes. On this basis, the utility model can be subjected to various substitutions and improvements, and all fall within the protection scope of the utility model.

Claims (10)

1. A kind frock of system for testing adhesive shear strength for rail vehicle, its characterized in that, this kind frock of system includes:

an upper cell chamber assembly (1), and

a lower cell cavity assembly (2);

wherein the lower cell cavity assembly (2) comprises an upper cell cavity assembly mounting region (201), a spacing region (202) and a groove region (203), wherein the spacing region (202) is positioned between the upper cell cavity assembly mounting region (201) and the groove region (203);

the upper groove cavity assembly (1) is detachably connected to the upper groove cavity assembly mounting area (201); the upper groove cavity assembly (1) is provided with a plurality of upper groove cavities (4) for accommodating upper sample plates (31) at intervals, and the groove areas (203) are provided with a plurality of lower groove cavities (5) for accommodating lower sample plates (32) at intervals;

one end of the upper template (31) extends from the end surface of the upper groove cavity (4) to the groove area (203) of the lower groove cavity assembly (2); one end of the lower template (32) extends from the end of the lower groove cavity (5) towards the spacing area (202) of the lower groove cavity assembly (2);

the upper groove cavity (4) and the lower groove cavity (5) are arranged in pairs and coaxially, so that the part of the upper sample plate (31) beyond the end face of the upper groove cavity (4) is positioned right above the lower sample plate (32).

2. The sample preparation tool according to claim 1, wherein a plurality of identification lines (8) are arranged in the interval region (202) at intervals, the identification lines (8) are parallel, and the extending direction is parallel to the width direction of the lower groove cavity (5).

3. The sample preparation tool according to claim 1, wherein the upper groove cavity (4) and the lower groove cavity (5) are respectively opened at two sides in the length direction.

4. A sample preparation tool according to claim 1, further comprising one or more backing plates (7), said backing plates (7) being detachably connected to the upper cell chamber assembly mounting area (201) of the lower cell chamber assembly (2) and being located below the upper cell chamber assembly (1).

5. The sample preparation tool according to claim 4, wherein the upper cell cavity assembly mounting area (201) is provided with a groove (3), and the backing plate (7) is located in the groove (3).

6. The tool according to claim 5, further comprising a substrate block placed in the recess (3) below the backing plate (7).

7. The sample preparation tool according to claim 4, wherein the lower chamber assembly (2), the backing plate (7) and the upper chamber assembly (1) are correspondingly provided with screw holes for connecting screws.

8. The sample preparation tool according to claim 1, wherein the upper groove cavity (4) and the lower groove cavity (5) are 5-10 pairs.

9. The sample preparation tool according to claim 1, wherein the bottom of the lower groove cavity (5) is higher than the plane of the spacing area (202) or is flush with the plane of the spacing area.

10. Sample preparation tooling according to claim 1, characterized in that the surface of the upper cell chamber assembly (1) and the spacer region (202) and the groove region (203) of the lower cell chamber assembly (2) are respectively sprayed with a teflon coating.