A sample preparation device and method thereof

Abstract

The application discloses a sample preparation device and a method thereof. The sample preparation device comprises a to-be-prepared piece, an operation table, a first supporting piece, a second supporting piece, a rolling assembly, a negative pressure assembly and a cutting assembly. The to-be-prepared piece comprises a stress section for testing and a fixed section for clamping, and the fixed section is located outside the stress section. One side of the operation table is inwardly recessed to form a groove. The first supporting piece, the fixed section and the second supporting piece are sequentially connected to form an intermediate body. The rolling assembly is arranged on the operation table and is used for rolling the intermediate body in a first direction. The negative pressure assembly is used for performing vacuumizing treatment on the surroundings of the intermediate body. The cutting assembly is used for cutting the intermediate body and the stress section after the vacuumizing treatment to obtain a sample. The sample preparation device and the method thereof are used for preparing the to-be-prepared piece into a sample, and the preparation device can ensure that the sample preparation effects of different batches are stable, thereby providing guarantee for obtaining real and reliable fabric tensile data.

Description

Technical Field

[0001] This application relates to the field of fiber production technology, and in particular to a sample preparation apparatus and method thereof. Background Technology

[0002] In the fabric production process, it is usually necessary to prepare fabric samples for tensile property tests in order to understand the properties of the fabric under different processes.

[0003] In related technologies, the lack of standardized equipment and procedures in the preparation process often makes it difficult to ensure that the parameters of each batch of samples are consistent, which undermines the uniformity of the preparation standards and thus affects the accuracy of the test data. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this application provides a sample preparation apparatus and method.

[0005] According to a first aspect of the present disclosure, a sample preparation apparatus is provided, comprising:

[0006] The workpiece to be prepared includes a force-bearing section for testing and a fixing section for clamping, wherein the fixing section is located outside the force-bearing section;

[0007] The control panel has an inward recess on one side to form a groove;

[0008] A first support member is adapted to the size of the workpiece to be prepared. The first support member is disposed in the groove, and the workpiece to be prepared is stacked on the first support member.

[0009] The second support member is disposed on the side of the fixed section away from the first support member, and the first support member, the section to be fixed and the second support member are connected in sequence to form an intermediate body;

[0010] A roller pressing assembly is disposed on the operating table. The roller pressing assembly is used to roll the intermediate body along a first direction, wherein the first direction is the direction extending from the force-bearing section to the fixed section.

[0011] A negative pressure assembly is used to perform vacuuming around the intermediate body on the operating table;

[0012] A cutting assembly is used to cut the intermediate body and the stress section after vacuum treatment to obtain a sample.

[0013] In some embodiments, the operating table is provided with a first channel, the first channel connecting the groove and the negative pressure component;

[0014] The sample preparation device further includes a heating plate disposed at the groove, and a second channel is provided on the heating plate, which communicates with the first channel. The intermediate body is stacked on the heating plate at a position away from the second channel.

[0015] In some embodiments, a seal is provided on the outer periphery of the first channel and the second channel for sealing the first channel and the second channel.

[0016] In some embodiments, the sample preparation apparatus further includes a limiting member disposed on the heating plate or the operating table, the limiting member being used to limit the position of the sample to be prepared.

[0017] In some embodiments, the roller pressing assembly includes a pressure roller, a moving unit, and a heating unit. The pressure roller is rotatably disposed on the moving unit, and the moving unit is used to drive the pressure roller to move back and forth along the first direction. The heating unit is disposed inside the pressure roller and is used to heat the outer wall of the pressure roller.

[0018] The pressure roller is capable of rotating around its axis.

[0019] In some embodiments, the cutting assembly includes a cutting plate and a cutting blade. The cutting plate is stacked on the vacuum-treated intermediate body and is detachably fixed relative to the intermediate body. The cutting plate is provided with a plurality of through slots. The length direction of the through slots is the same as the first direction. The plurality of through slots are arranged laterally perpendicular to the first direction. The cutting blade passes through the through slots and moves along the through slots to cut the intermediate body.

[0020] In some embodiments, the sample preparation apparatus further includes a shaping plate placed between the intermediate and the rolling assembly, the rolling assembly applying pressure to the intermediate by rolling the shaping plate.

[0021] In some embodiments, the sample preparation apparatus further includes an absorption layer, wherein the absorption layer and the second support are located on the same side of the sample to be prepared, and the absorption layer is located at a position of the sample to be prepared that is not covered by the second support, for absorbing fluid overflowing during the preparation process.

[0022] In some embodiments, the second support member is symmetrically disposed on both sides of the force-bearing segment along a transverse direction perpendicular to the first direction. It includes:

[0023] According to a second aspect of the present disclosure, a sample preparation method is provided, applied to the sample preparation apparatus, the sample preparation method comprising:

[0024] Lay the workpiece flat and divide it into a stress-bearing section and a fixing section. The stress-bearing section is used for testing, and the fixing section is used for clamping. Stack the workpiece with the first support and fix the fixing section to the first support.

[0025] The fixed first support and the workpiece to be prepared are laid flat in the groove of the operating table, wherein one side of the operating table is recessed inward to form the groove, and the first support is adapted to the size of the workpiece to be prepared.

[0026] The second support is stacked on the side of the workpiece to be prepared away from the first support, so that the second support, the section to be fixed and the first support are connected in sequence to form an intermediate body;

[0027] The rolling assembly rolls the intermediate body along a first direction, wherein the first direction is the direction extending from the force-bearing section to the fixed section;

[0028] The negative pressure component performs a vacuum treatment around the intermediate after roller pressing;

[0029] The cutting component cuts the intermediate after vacuum treatment to obtain the sample.

[0030] The technical solution provided in this application may include the following beneficial effects:

[0031] The sample preparation apparatus and method of this application distinguishes between a stressed section and a fixed section for the workpiece to be prepared, avoiding interference with the stressed section when processing the fixed section and ensuring data accuracy. The operating table groove provides a sealed foundation for negative pressure, ensuring effective vacuuming; a first support member of appropriate size stably supports the workpiece to be prepared, preventing local deformation and ensuring uniform processing. A second support member is located on both sides of the fixed section, ensuring uniform roller pressing. The vacuuming of the negative pressure component removes air bubbles from the intermediate material, making the fixed section structure compact and improving clamping stability. The cutting component reduces testing errors. The sample preparation apparatus and method of this application achieve standardized preparation of fabric tensile test specimens, providing a reliable guarantee for obtaining accurate and reliable test data.

[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0034] Figure 1 This is a front view of a sample preparation apparatus according to an exemplary embodiment.

[0035] Figure 2 This is a cross-sectional view of a sample preparation apparatus according to an exemplary embodiment.

[0036] Figure 3 This is a top view of one state of a sample preparation apparatus according to an exemplary embodiment.

[0037] Figure 4 This is a schematic diagram of the cutting plate of a sample preparation apparatus according to an exemplary embodiment.

[0038] Figure 5 This is a flowchart illustrating a sample preparation method according to an exemplary embodiment.

[0039] Figure label:

[0040] 1. Part to be prepared; 11. Load-bearing section; 12. Fixed section;

[0041] 2. Operating table; 21. Groove; 22. First channel; 3. First support member; 4. Second support member; 5. Roller assembly; 51. Pressure roller; 52. Moving unit; 6. Negative pressure assembly; 7. Cutting plate; 71. Through groove; 8. Heating plate; 81. Second channel; 9. Shaping plate; 100. Absorbent layer; 200. Limiting member. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0043] In the fabric production process, it is usually necessary to prepare fabric samples for tensile property tests to understand the properties of fabrics under different processes. In related technologies, due to the lack of standardized equipment and procedures, it is usually difficult to ensure that the parameters of each batch of samples are consistent, which undermines the uniformity of preparation standards and thus affects the accuracy of test data.

[0044] Based on this, such as Figure 1-4 As shown in the figure, this application provides a sample preparation device for preparing the workpiece 1 into a sample. The preparation device can ensure that the sample preparation effect of different batches is stable, and provide a guarantee for obtaining real and reliable fabric tensile data.

[0045] The sample preparation apparatus includes a sample to be prepared (1), an operating table (2), a first support (3), a second support (4), a roller pressing assembly (5), a negative pressure assembly (6), and a cutting assembly. The sample to be prepared (1) is a fabric for which tensile properties need to be tested, such as carbon fiber fabric or textile fabric. The sample to be prepared (1) can be selected in a fixed shape, such as a rectangle or a square, to facilitate processing.

[0046] The workpiece 1 to be prepared is divided into a stress-bearing section 11 and a fixed section 12. The stress-bearing section 11 is the core area for tensile testing and needs to maintain the original state of the fabric. Therefore, during the preparation of the sample, the stress-bearing section 11 cannot be subjected to any additional treatment or impregnation with adhesive, so as not to affect the test results. The fixed section 12 is located outside the stress-bearing section 11 and is the area clamped by the test fixture during the test. It needs to be enhanced in terms of its integrity and hardness through subsequent treatment to prevent fiber slippage due to insufficient clamping force during tensile testing.

[0047] In such Figure 2-3 In one example, a rectangular workpiece 1 is selected. The middle section of workpiece 1 is divided into a stress-bearing section 11, and the outer side is divided into a fixing section 12. The two ends of workpiece 1 are then processed. Dividing workpiece 1 into a stress-bearing section 11 and a fixing section 12 clearly distinguishes the testing functional area and the clamping functional area, avoiding the processing of the fixing section 12 from affecting the original performance of the stress-bearing section 11, and fundamentally ensuring that the test data can truly reflect the tensile properties of the fabric itself.

[0048] The operating table 2 serves as the support platform for the entire preparation process. It is made of stainless steel or high-strength plastic to increase its strength and stability. The surface of the operating table 2 is smooth to reduce friction with the workpiece 1, thereby reducing wear. One side of the operating table 2 is recessed inward to form a groove 21, which... Figure 2 In the example shown, the top surface of the operating table 2 is recessed inward, and the entire preparation process is carried out within the groove 21. The groove 21 facilitates vacuuming in conjunction with the negative pressure component 6 during the preparation process. In one example, scale lines can be provided on the surface of the operating table 2 to help locate the placement of the workpiece 1 to be prepared, ensuring consistency in each preparation.

[0049] The first support member 3 is a rigid flat plate, such as a resin board or cardboard. The length and width of the first support member 3 are the same as or slightly larger than the length and width of the part to be prepared 1. During preparation, the first support member 3 is placed in the groove 21, and the part to be prepared 1 is stacked with the first support member 21 to facilitate fixing the first support member 3 and the fixing section 12.

[0050] The second support member 4 is a rigid flat plate, such as a resin board or cardboard. The second support member 4 can be the same as or different from the first support member 3. The second support member 4 is positioned on the side of the fixing section 12 away from the first support member 3, so that the first support member 3, the fixing section 12, and the second support member 4 are sequentially connected and fixed to form an intermediate body. The overlapping portion of the first support member 3, the fixing section 12, and the second support member 4 is the part clamped by the subsequent test fixture. In one example, the first support member 3, the fixing section 12, and the second support member 4 can be fixed with adhesive or double-sided tape.

[0051] The roller pressing assembly 5 is installed on the operating table 2. The roller pressing assembly 5 is used to press the intermediate body in a first direction, which extends from the force-bearing section 11 to the fixed section 12. This allows for precise control of the starting point of the roller pressing, preventing the roller pressing assembly 5 from pressing the force-bearing section 11. Simultaneously, when the first support 3, the fixed section 12, and the second support 4 are fixed with adhesive, the aforementioned roller pressing direction prevents adhesive from overflowing into the force-bearing section 11, thus affecting the test results. Using the roller pressing assembly 5 to press the intermediate body helps to remove air bubbles, preventing them from affecting the test results. The controllable pressure and speed of the roller pressing assembly 5 ensure consistent treatment results for the fixed section 12 across different batches of samples. Furthermore, when using adhesive to fix the intermediate body, the roller pressing assembly 5 allows the adhesive to fully impregnate and compact the fixed section 12, ensuring the stability of the connection between the fixed section 12 and the first and second support members 3 and 4.

[0052] The negative pressure assembly 6 is used to create a vacuum around the intermediate. In some examples, the negative pressure assembly 6 may include a vacuum pump, vacuum piping, and a sealing cover. The sealing cover is placed over the outside of the intermediate, and the vacuum piping connects the vacuum pump and the sealing cover to create a vacuum around the intermediate. The negative pressure assembly 6 provides a negative pressure environment for the intermediate, which can expel air from the fixed section 12 and prevent air bubbles from forming during adhesive impregnation, thus avoiding air bubbles affecting the test results. At the same time, the negative pressure environment can also accelerate the penetration rate of the adhesive and improve the impregnation efficiency.

[0053] The cutting assembly cuts the vacuum-treated intermediate body to obtain the final sample. The cutting assembly cuts the treated intermediate body and the stress section 11. Cutting can be performed according to the scale lines on the operating table 2, or different templates can be set, selecting the appropriate template for different fabrics. Standardized cutting ensures consistent dimensions across different batches of samples, reducing fluctuations in test data due to dimensional differences.

[0054] The sample preparation apparatus of this application distinguishes the workpiece 1 to be prepared into a force-bearing section 11 and a fixed section 12, avoiding interference with the force-bearing section 11 when processing the fixed section 12, thus ensuring data accuracy. The groove 21 of the operating table 2 provides a sealed foundation for negative pressure, ensuring effective vacuuming; the first support member 3 of the appropriate size stably supports the workpiece 1 to be prepared, preventing local deformation and ensuring uniform processing. The second support member 4 and the first support member 3 are located on opposite sides of the fixed section 12, ensuring uniform roller pressing. The vacuuming component 6 removes air bubbles from the intermediate material, making the structure of the fixed section 12 compact and improving clamping stability. The cutting component reduces testing errors. The sample preparation apparatus of this application achieves standardized preparation of fabric tensile test specimens, providing a core guarantee for obtaining accurate and reliable test data.

[0055] In some embodiments, such as Figure 2 As shown, the operating table 2 is provided with a first channel 22, which is a through-hole opened inside the operating table 2. One end of the first channel 22 is connected to the groove 21. In one example, one end of the first channel 22 is connected to the bottom of the groove 21; in other examples, one end of the first channel 22 is connected to the side wall of the groove 21. The other end of the first channel 22 is connected to the negative pressure component 6 through a sealing joint. The first channel 22 can be a multi-branch structure, that is, multiple first channels 22 are opened in the operating table 2 to facilitate rapid vacuuming. The sample preparation device also includes a heating plate 8, which is a flat plate structure. The heating plate 8 can be made of a high thermal conductivity material such as aluminum alloy or copper alloy. In one example, a heating wire is set inside the heating plate 8, and precise heating is achieved through a temperature control module. The heating plate 8 is set at the groove 21, and the sample preparation process can be completed on the heating plate 8 to accelerate the curing of the adhesive. Figure 2-3 As shown, a second channel 81 is provided on the heating plate 8, which is connected to the first channel 22 to form a vacuum passage. The intermediate body is stacked on the heating plate 8, and the intermediate body avoids the second channel 81 to ensure that the heat of the heating plate 8 is evenly transferred to the intermediate body, while avoiding the airflow of the second channel 81 from directly impacting the intermediate body and causing local deformation.

[0056] In some embodiments, a seal is provided around the outer periphery of the first channel 22 and the second channel 81 to ensure sealed communication between the two channels. The seal can be made of silicone or rubber. In one example, the seal has an annular structure, with its inner diameter matching the outer diameter of the channel. The seal ensures a stable negative pressure environment and prevents insufficient vacuum due to air leakage during the vacuuming process.

[0057] In some embodiments, the preparation apparatus further includes a limiting member 200, which has a block-like structure and one side is a plane. In one example, the limiting member 200 is fixed to the heating plate 8, or is formed by protruding outward from one side of the heating plate 8. In another example, the limiting member 200 is fixed to the operating table 2, for example, the limiting member 200 is formed by protruding outward from the side wall of the groove 21. When placing the part to be prepared 1 or the intermediate, it can directly abut against the plane of the limiting member 200, ensuring accurate positioning of the part to be prepared 1 or the intermediate, thereby improving the consistency of the sample.

[0058] In some embodiments, such as Figure 1 As shown, the roller pressing assembly 5 includes a pressure roller 51. The pressure roller 51 has a cylindrical structure, and the outer wall of the pressure roller 51 is made of a high-hardness, low-friction material, such as chrome-plated stainless steel or polytetrafluoroethylene coating, which can ensure the uniformity of pressure transmission during roller pressing and reduce frictional damage with the intermediate body. The roller pressing assembly 5 also includes a moving unit 52, on which the pressure roller 51 is rotatably disposed. In one example, the moving unit 52 includes a lateral drive and a pressure adjusting member. The pressure roller 51 is disposed on the lateral drive via the pressure adjusting member. The lateral drive is used to drive the pressure adjusting member to move in a first direction. The lateral drive can be, for example, a cylinder. The pressure adjusting member is used to drive the pressure roller 51 to move up and down to adjust the pressure between the pressure roller 51 and the intermediate body. The pressure adjusting member includes, for example, a motor, a gear, and a rack. The output end of the motor is connected to the gear. The end of the pressure roller 51 is rotatably disposed on the gear via a bearing. The gear meshes with the rack. The rack is vertically disposed, so that the motor drives the gear to rotate. The gear moves up and down along the rack while driving the pressure roller 51 to move up and down to reduce or increase the pressure between the pressure roller 51 and the intermediate body. The pressure roller 51 assembly also includes a heating unit, which is disposed inside the pressure roller 51 to heat the outer wall of the pressure roller 51. In one example, the heating unit can be a heating wire; in another example, the heating unit can also be a hot oil channel provided inside the pressure roller 51, through which hot oil is supplied to heat the outer side of the pressure roller 51. The pressure roller 51 can heat the intermediate while rolling it, which can accelerate the flow of the adhesive, allowing the adhesive to penetrate more fully into the gaps of the workpiece 1 to be prepared, filling tiny voids and reducing air bubble residue.

[0059] In some embodiments, the cutting assembly includes a cutting plate 7 and a cutting blade. The cutting plate 7 is a rigid plate-like structure, stacked on top of the vacuum-treated intermediate body. In one example, the length and width of the cutting plate 7 correspond to the length and width of the groove 21, allowing the cutting plate 7 to be embedded in the groove 21 while preventing it from shifting. In other examples, the cutting plate 7 is detachably mounted on the operating table 2 by magnetic attraction or bolts. The cutting plate 7 and the intermediate body are fixed together, ensuring that neither the cutting plate 7 nor the intermediate body will shift during the cutting process, thus guaranteeing cutting accuracy. Figure 4 As shown, the cutting plate 7 has multiple through slots 71, the length direction of which is the same as the first direction. The multiple through slots 71 are arranged laterally perpendicular to the first direction. When cutting is required, the cutting blade passes through the through slots 71 and moves along them to complete the cutting process. The cutting blade is a high-hardness blade. The movement of the cutting blade can be done manually or by a robotic arm.

[0060] In some embodiments, the sample preparation apparatus further includes a shaping plate 9, which is a rigid flat plate structure. The shaping plate 9 is sized to match the intermediate body. The shaping plate 9 is placed between the intermediate body and the roller pressing assembly 5, and the shaping plate 9 is laid in a way that completely covers the fixed section 12 area of ​​the intermediate body. The roller pressing assembly 5 applies pressure to the intermediate body through the roller pressing shaping plate 9, so that the pressure of the roller pressing assembly 5 is transmitted to the fixed section 12 through the shaping plate 9. This can make the force on each area of ​​the fixed section 12 of the intermediate body uniform, avoid local damage, and at the same time prevent the workpiece 1 to be prepared from being rolled or scraped by the roller pressing assembly 5, thus protecting the structural integrity of the workpiece 1 to be prepared.

[0061] In some embodiments, the sample preparation apparatus further includes an absorbent layer 100, which is located on the same side as the sample 1 to be prepared. The absorbent layer 100 and the second support 4 form a complementary covering relationship, with the second support 4 covering only the portion of the fixed section 12 not covered by the second support 4 and the stress-bearing section 11. The absorbent layer 100 can be a non-woven fabric or a breathable felt. The absorbent layer 100 is used to absorb fluids, such as adhesives, that overflow during the preparation process, preventing fluids from flowing to the stress-bearing section 11 and contaminating it, thus affecting the test results.

[0062] In some embodiments, the second support member 4 is symmetrically arranged on both sides of the force-bearing section 11 in a transverse direction perpendicular to the first direction. The symmetrical arrangement can ensure that the clamping force on both sides of the specimen is balanced during tensile testing, reducing the deviation of test data caused by force offset.

[0063] This application also provides a sample preparation method, which uses the above-described sample preparation device to prepare the workpiece into a sample. By providing a standard preparation process, the parameters of each batch of samples are consistent, thereby ensuring the accuracy of the experimental data.

[0064] like Figure 5 As shown, the sample preparation method includes:

[0065] S1. Lay the workpiece to be prepared flat, divide it into a stress section and a fixed section. The stress section is used for testing, and the fixed section is used for clamping. Stack the workpiece to be prepared with the first support member, and fix the fixed section to the first support member.

[0066] Before step S1, select the workpiece 1 to be prepared and cut it into a regular shape, such as a square, rectangle, or circle, to facilitate subsequent operations. After laying the workpiece 1 flat, the stress-bearing section 11 can be divided by drawing lines with a pen, or by using tape to stick around the workpiece 1. The location of the tape is the fixing section 12, and the area enclosed by the tape is the stress-bearing section 11. The first support 3 is a rigid flat plate, such as a resin board or cardboard. The cardboard can be 2mm thick corrugated cardboard, which has a certain rigidity and is not easily deformed. During the operation, ensure that the stress-bearing section 11 is not treated in any way.

[0067] S2. The fixed first support and the workpiece to be prepared are laid flat in the groove of the operating table, wherein one side of the operating table is recessed inward to form a groove, and the size of the first support is adapted to the workpiece to be prepared.

[0068] In step S2, the first support member 3 can be laid flat in the groove 21 first, and then the part to be prepared 1 can be laid flat on the first support member 3. Alternatively, the first support member 3 and the part to be prepared 1 can be initially fixed first, and then placed in the groove 21. The initial fixing method can be to stick them together with tape or glue. During the initial fixing, the fixing section 12 is fixed to the first part to be prepared, and it is necessary to avoid affecting the stress section 11. The size of the first support member 3 and the size of the part to be prepared 1 are smaller than the groove 21, so that the first support member 3 and the part to be prepared 1 can be placed in the groove 21. At the same time, the size of the first support member 3 and the size of the part to be prepared 1 match, for example, the length and width of the part to be prepared 1 are slightly larger than the length and width of the part to be prepared 1.

[0069] S3. Stack the second support member on the side of the workpiece to be prepared away from the first support member, so that the second support member, the fixing section and the first support member are connected in sequence to form the middle.

[0070] In step S3, the second support member 4 is stacked on the side of the workpiece 1 away from the first support member 3, and the second support member 4, the workpiece 1, and the first support member 3 are connected sequentially. In one example, before stacking the second support member 4, adhesive can be applied to the fixing segment 12, and then the second support member 4 is placed on the side with the adhesive applied, allowing the adhesive to penetrate to both sides and bond with the first support member 3 and the second support member 4 respectively.

[0071] S4. The rolling assembly repeatedly rolls the intermediate body along a first direction, wherein the first direction is the direction extending from the force-bearing section to the fixed section.

[0072] In step S4, when the roller pressing assembly 5 is rolling, the position of the fixed section 12 near the intermediate body is recorded as the first position. Rolling begins from the first position along the first direction away from the force-bearing section 11. This process can be repeated. When multiple rolling operations are required, the roller pressing assembly 5 must return to the first position each time before starting rolling again. During the return process, the roller pressing assembly 5 does not contact the intermediate body; that is, no pressure is applied to the intermediate body during the return process, avoiding contamination of the force-bearing section 11 with the adhesive and ensuring the purity of the test area. Simultaneously, the rolling pressure can be gradually increased during multiple rolling operations. Starting with low pressure prevents the adhesive from being instantly squeezed out of the fixed section 12. Increasing the pressure gradually removes air bubbles between the adhesive and the workpiece 1, while also promoting more complete penetration of the adhesive into the fibers of the workpiece 1, improving bonding strength and uniformity. When the roller pressing assembly 5 is rolling the intermediate body, a rigid shaping plate 9 can be placed between the roller pressing assembly 5 and the intermediate body. Rolling the intermediate body through the shaping plate 9 ensures uniform force distribution on the intermediate body.

[0073] S5. The negative pressure component performs vacuum treatment around the intermediate body after roller pressing.

[0074] In step S5, the vacuuming process can create a negative pressure environment around the intermediate, which can further remove the tiny air bubbles remaining in the adhesive and prevent the strength of the fixed section 12 from fluctuating due to air bubbles after curing. At the same time, the negative pressure environment can make the prepared part more tightly bonded to the first support 3 and the second support 4 under pressure, thus accelerating the curing of the adhesive.

[0075] S6. The cutting component cuts the intermediate after vacuum treatment to obtain the sample.

[0076] In step S6, the intermediate body after vacuum treatment is cut to avoid edge tearing or deformation caused by uncured material, thus ensuring the accuracy of sample size.

[0077] The sample preparation method of this application divides the sample 1 into a fixed section 12 and a force-bearing section 11, fixes the fixed section 12 of the sample 1 to be prepared with the first support 3 and the second support 4, and applies pressure to the intermediate body sequentially by a roller pressing assembly 5 for roller pressing, and uses vacuum treatment to strengthen and remove air bubbles from the intermediate body to avoid affecting the test results. The above preparation method can reduce the deviation generated during the preparation process and ensure the stability of the sample and the reliability of the test data.

[0078] This application provides a sample preparation method, which includes the following steps:

[0079] Take a piece of fabric to be prepared 1, and use tape to mark out a square stress section 11 with a length and width of 22 cm. The position of the tape is the fixing section 12. Use scissors to cut the fixing section 12 along the direction of the fibers, and cut the entire piece to be prepared 1 into a regular shape.

[0080] Take a piece of corrugated paper with a thickness of 2 mm as the first support 3, and cut it to the same size as the part to be prepared with a regular shape. Use tape to stick the fixing section 12 and the first support 3 together.

[0081] The first support member 3 and the workpiece 1 to be prepared are placed on the heating plate 8 of the groove 21 along the limiting member 200, so that one side of the workpiece 1 to be prepared is in contact with one side of the limiting member 200. At the same time, the first support member 3 and the workpiece 1 to be prepared will not block the first channel 22 and the second channel 81. The first support member 3 is in contact with the heating plate 8, so that the workpiece 1 to be prepared is located above the first support member 3.

[0082] An adhesive is applied to the fixed section 12, wherein the adhesive may be an epoxy resin adhesive, and the adhesive is applied without contacting the stress section 11.

[0083] Take two pieces of cardboard and place them on the adhesive coating position of the fixed section 12. The two pieces of cardboard are identical and symmetrical about the force-bearing section 11. At this moment, the first support 3, the fixed section 12 and the second support 4 are initially connected together to form an intermediate body.

[0084] A piece of breathable felt is cut as the absorbent layer 100 and placed on top of the intermediate body, so that the breathable felt covers the surface of the part to be prepared 1. The breathable felt does not cover the second support member 4; that is, the portion of the breathable felt at the location of the second support member 4 is removed. This facilitates the later separation of the breathable felt from the intermediate body and prevents the breathable felt from carrying away the second support member 4 during separation. The breathable felt is used to absorb any excess adhesive on the part to be prepared 1.

[0085] Select a steel plate and place it above the absorption layer 100, and start heating the heating plate 8. At the same time, start heating the roller pressing assembly 5 to heat the pressure roller 51.

[0086] The moving unit 52 moves the pressure roller 51 to a first position on the side of the fixed section 12 closest to the fixed section 12, and applies pressure to the shaping plate 9 with the pressure roller 51. It then moves from the first position to the side of the fixed section 12 furthest from the force-bearing section 11, and then lifts the pressure roller 51 back to the first position. The pressure roller 51 continues to apply force to the shaping plate 9, and the rolling process is repeated. Each time the pressure roller 51 returns to the first position, the pressure on the shaping plate 9 is greater than the previous pressure. After the rolling is completed, the heating of the heating plate 8 and the heating of the pressure roller 51 by the heating unit are turned off.

[0087] After the intermediate is rolled, a sealing film is covered on the surface of the intermediate, and the intermediate is vacuumed by the negative pressure component 6 which is connected to the first channel 22 and the second channel 81.

[0088] After vacuuming, the cutting plate 7 is fixed on the operating table 2, and the cutting blade cuts along the through groove 71 on the cutting plate 7. After cutting, the cutting plate 7 is removed to obtain a sample that meets the requirements.

[0089] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Accordingly, each module / unit in the above embodiments can be implemented in hardware or as a software functional module. This invention is not limited to any particular combination of hardware and software.

[0090] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0091] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A sample preparation apparatus, characterized in that, include: The workpiece to be prepared includes a force-bearing section for testing and a fixing section for clamping, wherein the fixing section is located outside the force-bearing section; The control panel has an inward recess on one side to form a groove; A first support member is adapted to the size of the workpiece to be prepared. The first support member is disposed in the groove, and the workpiece to be prepared is stacked on the first support member. The second support member is disposed on the side of the fixed section away from the first support member, and the first support member, the section to be fixed and the second support member are connected in sequence to form an intermediate body; A roller pressing assembly is disposed on the operating table. The roller pressing assembly is used to roll the intermediate body along a first direction, wherein the first direction is the direction extending from the force-bearing section to the fixed section. A negative pressure assembly is used to perform vacuuming around the intermediate body on the operating table; A cutting assembly is used to cut the intermediate body and the stress section after vacuum treatment to obtain a sample.

2. The sample preparation apparatus according to claim 1, characterized in that, The operating table is provided with a first channel, which connects the groove and the negative pressure component; The sample preparation device further includes a heating plate disposed at the groove, and a second channel is provided on the heating plate, which communicates with the first channel. The intermediate body is stacked on the heating plate at a position away from the second channel.

3. The sample preparation apparatus according to claim 2, characterized in that, A sealing element is provided on the outer periphery of the first channel and the second channel, the sealing element being used to seal the first channel and the second channel.

4. The sample preparation apparatus according to claim 2, characterized in that, The sample preparation device further includes a limiting member, which is disposed on the heating plate or the operating table, and is used to limit the position of the sample to be prepared.

5. The sample preparation apparatus according to claim 1, characterized in that, The roller pressing assembly includes a pressure roller, a moving unit, and a heating unit. The pressure roller is rotatably mounted on the moving unit, which drives the pressure roller to move back and forth along the first direction. The heating unit is located inside the pressure roller and is used to heat the outer wall of the pressure roller. The pressure roller is capable of rotating around its axis.

6. The sample preparation apparatus according to claim 1, characterized in that, The cutting assembly includes a cutting plate and a cutting blade. The cutting plate is stacked on the vacuum-treated intermediate body and is fixed relative to the intermediate body in a detachable manner. The cutting plate is provided with a plurality of through slots. The length direction of the through slots is the same as the first direction. The plurality of through slots are arranged in a transverse direction perpendicular to the first direction. The cutting blade passes through the through slots and moves along the through slots to cut the intermediate body.

7. The sample preparation apparatus according to claim 1, characterized in that, The sample preparation apparatus further includes a shaping plate, which is placed between the intermediate body and the rolling assembly. The rolling assembly applies pressure to the intermediate body by rolling the shaping plate.

8. The sample preparation apparatus according to claim 1, characterized in that, The sample preparation device further includes an absorption layer, which is located on the same side of the sample to be prepared as the second support member, and the absorption layer is located on the part of the sample to be prepared that is not covered by the second support member, for absorbing fluid that overflows during the preparation process.

9. The sample preparation apparatus according to claim 1, characterized in that, The second support member is symmetrically arranged on both sides of the stress-bearing section along a transverse direction perpendicular to the first direction.

10. A method for preparing a sample, characterized in that, The sample preparation apparatus as described in any one of claims 1-9, wherein the sample preparation method comprises: Lay the workpiece flat and divide it into a stress-bearing section and a fixing section. The stress-bearing section is used for testing, and the fixing section is used for clamping. Stack the workpiece with the first support and fix the fixing section to the first support. The fixed first support and the workpiece to be prepared are laid flat in the groove of the operating table, wherein one side of the operating table is recessed inward to form the groove, and the first support is adapted to the size of the workpiece to be prepared. The second support member is stacked on the side of the workpiece to be prepared away from the first support member, so that the second support member, the fixed section and the first support member are connected in sequence to form an intermediate body; The rolling assembly rolls the intermediate body along a first direction, wherein the first direction is the direction extending from the force-bearing section to the fixed section; The negative pressure component performs a vacuum treatment around the intermediate after roller pressing; The cutting component cuts the intermediate after vacuum treatment to obtain the sample.

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