A laboratory small-width steel wire cord fabric regularized sample preparation device and method

Abstract

This invention discloses a laboratory-scale sample preparation device and method for small-width steel cord fabric regularized samples. The sample preparation device includes a warping groove mold assembly, a steel cord tensioning and positioning assembly, a steel cord fabric thickness control assembly, and a film pressing device. It has a simple structure and is easy to use. It can precisely control the tension of each steel cord, as well as the thickness and centering of the steel cord fabric. The prepared small-width steel cord fabric regularized samples can not only be used to test the adhesion between the adhesive compound and the copper-plated steel cord, but also to test the influence of the steel cord fabric on the interlayer interface force in the tire. This can then guide the design of calendering process parameters for the steel cord fabric (steel cord thickness, steel cord density, rubber compound selection, etc.), and guide the construction design of calendered steel cord fabric in tire manufacturing, effectively supporting the product design and performance optimization of tires or rubber products.

Description

Technical Field

[0001] This invention belongs to the field of laboratory sample preparation technology, specifically relating to a sample preparation device and method for preparing small-width steel wire curtain samples in the laboratory. Background Technology

[0002] In the research and development of tires and rubber products, steel cord fabric, as a core skeleton material, directly impacts product design and performance optimization through laboratory testing of its mechanical properties (such as tensile strength, peel strength, and flexural stiffness). Laboratory testing typically requires the preparation of small-sized steel cord fabric samples. If steel cord fabric is directly produced using a calender for sampling, at least 20 meters of fabric would be needed, resulting in significant waste. Therefore, laboratory-grade steel cord fabric molds are generally used to prepare small-sized steel cord fabric samples.

[0003] Small-sized steel cord fabric samples require uniform steel cord arrangement and consistent tension, and the film coating must be bubble-free and of uniform thickness. Otherwise, the test data will be distorted and cannot accurately reflect the true performance of the material. Existing technology, with publication number CN115597940A, discloses a device and method for preparing regular steel cord fabric samples. This technology roughly limits the sample size through mold holes, but lacks a steel cord arrangement guide structure, failing to guarantee uniform and centered steel cord arrangement. It also lacks a targeted steel cord tensioning and positioning mechanism, making the steel cords prone to loosening and shrinkage during sample preparation, resulting in inconsistent tension within the sample. Thickness control relies solely on the boss height, which cannot be dynamically adjusted according to different film materials and steel cord densities, leading to poor adaptability and making it unsuitable for preparing non-vulcanized steel cord fabrics.

[0004] The prior art disclosed in CN221391798U is a prefabrication mold for steel cord fabric in the laboratory. Although this technology can tension and fix the steel cord, it cannot accurately control the tension of each steel cord, nor can it accurately control the thickness of the steel cord or the centering of the steel cord. It is only suitable for simple sample preparation of steel cord fabric and can only be used to test the adhesion between the adhesive and the copper-plated steel cord. It cannot be used to test the influence of the interlayer interface force of the steel cord fabric in the tire, and thus guide the design of the calendering process parameters of the steel cord fabric (thickness of the steel cord fabric, density of the steel cord, selection of adhesive, etc.).

[0005] Therefore, there is an urgent need to design a sample preparation device specifically for small-sized steel wire cord fabric samples in the laboratory, to achieve precise arrangement and tensioning of the steel wire cord, ensure the centering of the steel wire cord and uniform and bubble-free film coating, improve sample quality and dimensional accuracy, and meet the stringent requirements of laboratory testing. Summary of the Invention

[0006] To address the aforementioned problems in the existing technology, this invention provides a laboratory small-width steel wire cord fabric regularized sample preparation device and method.

[0007] The object of this invention is achieved in the following manner: A laboratory sample preparation device for small-width steel cord fabric regularization includes a warping groove mold assembly, a steel cord tensioning and positioning assembly, a steel cord fabric thickness control assembly, and a film pressing device. The warping groove mold assembly includes a mold cavity body and a plurality of parallel warping grooves arranged on the mold cavity body. The groove spacing of the warping grooves is matched with the wire cord density of the sample, the groove width is clearance-fitted with the wire cord diameter, and the groove length is not less than the sample length. A steel cord tensioning and positioning assembly includes a fixed tensioning base and a sliding tensioning base respectively disposed at both ends of the warping groove. Both the fixed tensioning base and the sliding tensioning base are provided with positioning clamps, which correspond one-to-one with the warping groove and are used to clamp the ends of the steel cord. A tensioning device is provided on the outside of the sliding tensioning base. The tensioning device drives the sliding tensioning base to move the positioning clamps along the length direction of the warping groove to achieve tensioning and fixing of the steel cord. A tension force detector is clamped on each steel cord. The steel wire cord fabric thickness control component includes an upper adhesive coating unit and a lower adhesive coating unit respectively disposed on the upper and lower sides of the warping groove mold component. The upper adhesive sheet and the lower adhesive sheet are respectively laid on the working surfaces of the upper adhesive coating unit and the lower adhesive coating unit. The lower adhesive coating unit is provided with graduated positioning posts at the four corners, and the upper adhesive coating unit is provided with guide holes that cooperate with the positioning posts. The film pressing device has film pressing devices installed above the upper adhesive unit and below the lower adhesive unit. The film pressing device includes a flat pressing plate and a pressure driving device. The pressure driving device applies pressure evenly to the upper adhesive unit, the warping groove mold assembly and the lower adhesive unit through the flat pressing plate.

[0008] The mold cavity body has grooved mounting slots on two pairs of sides, and grooved plates can be detachably connected to the grooved mounting slots. The grooved plates are provided with warping grooves.

[0009] The gap between the width of the warping groove and the diameter of the steel cord is 0.02-0.05mm; the length of the steel cord of the sample is at least 20mm-50mm longer than the distance between the positioning clamps at both ends of the same warping groove.

[0010] Each positioning chuck is equipped with anti-slip grooves, and the surface of the anti-slip grooves is covered with rubber anti-slip pads.

[0011] A guide rail is provided between the tensioning device and the tensioning base.

[0012] The dimensions of the upper and lower adhesive units are less than or equal to 20-30mm of the warp groove mold cavity body; both the upper and lower adhesive units are made of rigid materials with a surface roughness Ra≤0.8μm; the parallelism error of the mating surfaces of the upper and lower adhesive units is ≤0.02mm.

[0013] A positioning mechanism is provided between the upper surface of the lower flat pressing plate and the lower surface of the lower adhesive unit.

[0014] The working surfaces of the warping groove mold assembly, the upper coating unit, and the lower coating unit are all chrome-plated with a coating thickness of 0.02mm.

[0015] A method for preparing a laboratory-sized steel wire cord fabric specimen, using the aforementioned specimen preparation device, includes the following steps: S1: Select appropriate groove spacing and groove width for warping grooves based on the wire cord density, wire cord diameter and sample size of the target sample. S2: Place the steel wire cords one by one into the warping groove, clamp the two ends of the steel wire cords by the positioning clamps of the steel wire cord tensioning and positioning assembly, adjust the tensioning device to move the sliding tensioning base outward, and after the tension of the steel wire cord reaches the set value, the tensioning device stops operating and the position of the positioning clamps is fixed. S3: Lay the cut film in the lower and upper adhesive units of the steel cord fabric thickness control component, so that the film completely covers the warping groove area; S4: Place the lower adhesive unit with the laid film below the warping groove mold assembly, lay the cut upper film on the arranged steel wire cord, and place the upper adhesive unit through the guide hole and positioning post. S5: Operate the film pressing device to apply a set pressure to both the upper and lower adhesive units, expel the air between the film and the steel cord, and stop pressing when the fabric thickness reaches the target value; S6: Loosen the steel cord tensioning and positioning assembly, remove the sample, and trim away excess film and steel cord ends to obtain a neat small-width steel cord fabric sample for laboratory use.

[0016] In S2, the tension of the steel cord is set to 5-30N; in S5, the pressure applied by the film pressing device to the upper and lower adhesive units is maintained at 0.5-5MPa.

[0017] Compared to existing technologies, the laboratory small-width steel cord fabric regularized sample preparation device disclosed in this invention has a simple structure and is easy to use. It can accurately control the tension of each steel cord, as well as the thickness and centering of the steel cord fabric. The prepared small-width steel cord fabric regularized sample can not only be used to test the adhesion between the adhesive compound and the copper-plated steel cord, but also to test the influence of the steel cord fabric on the interlayer interface force in the tire. This can then guide the design of the calendering process parameters of the steel cord fabric (thickness of the steel cord fabric, density of the steel cord, selection of the adhesive compound, etc.), guide the construction design of calendered steel cord fabric in tire manufacturing, and effectively support the product design and performance optimization of tires or rubber products. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a top view of the warping groove assembly.

[0020] Figure 3 This is a top view of the steel wire cord tensioning and positioning assembly.

[0021] Figure 4 This is a top view of the steel wire cord fabric thickness control assembly.

[0022] In the diagram: 1-warping groove mold assembly, 11-mold cavity body, 12-groove plate mounting groove, 13-groove plate, 14-warping groove, 15-groove plate locking bolt; 2-steel cord tensioning and positioning assembly, 21-fixed tensioning base, 22-positioning chuck, 221-anti-slip tooth groove, 222-positioning chuck locking bolt, 23-tensioning device, 24-guide slide rail, 25-sliding tensioning base; 3-steel cord fabric thickness control assembly, 31-upper adhesive unit, 311-guide hole, 32-lower adhesive unit, 321-positioning post; 4-film pressing device, 41-flat pressing plate, 42-pressure driving device; 5-steel cord; 6-film. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading the contents of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by this invention.

[0024] like Figure 1-4As shown, a laboratory small-width steel cord fabric regularized sample preparation device includes a warping groove mold assembly 1, a steel cord tensioning and positioning assembly 2, a steel cord fabric thickness control assembly 3, and a film pressing device 4. The warping groove mold assembly 1 includes a mold cavity body 11 and a plurality of parallel warping grooves 14 arranged on the mold cavity body 11. The groove spacing of the warping grooves 14 is matched with the steel cord density of the sample. For example, when preparing a sample with a steel cord density of 5 strands / mm, the groove spacing is set to 0.2mm, the groove width is clearance-fitted with the steel cord diameter, the groove length is not less than the sample length, and the steel cord is placed in the warping groove 14.

[0025] The steel cord tensioning and positioning assembly 2, used to tighten and fix the steel cord, includes a fixed tensioning base 21 at one end of the warping groove and a sliding tensioning base 25 at the other end. Both the fixed tensioning base 21 and the sliding tensioning base 25 are equipped with positioning clamps 22, which correspond one-to-one with the warping groove 14 and are used to clamp the ends of the steel cord. A tensioning device 23 is located on the outside of the sliding tensioning base. The tensioning device 23 drives the tensioning base 21 to move the positioning clamps 22 along the length of the warping groove, thereby tightening and fixing the steel cord. A tension force detector (not shown in the figure) is clamped onto each steel cord for real-time monitoring of the tension force. The steel cord tensioning and positioning assembly 2 also includes a controller. The tension force detector and the tensioning device 23 are both connected to the controller. The controller controls the operation of the tensioning device. The tension force detector detects the tension force, and when the tension force reaches a preset value, the controller stops the operation of the tensioning device. After the steel wire cord is placed into the warping groove 14, the positioning clamp 22 holds the end of the steel wire cord. The tensioning device 23 drives the sliding tensioning base 25 to move the positioning clamp 22 away from the mold cavity body 11, thus tightening the steel wire cord. After reaching the set tension force, the tensioning device 23 stops operating, and the position of the positioning clamp is fixed, achieving continuous tension and fixation of the steel wire cord. The tension force adjustment range is preferably 5-30N. The tension force adjustment range of the tensioning device 23 is set to 8-15N. It is a linear drive mechanism, which can be a linear motor or a pneumatic / hydraulic cylinder, or a rotary motor + ball screw. Preferably, a precision linear drive unit composed of a servo motor + ball screw is selected. The linear drive mechanism is a mature technology in the prior art. The tensioning device 23 can also use a disc spring structure.

[0026] The steel cord fabric thickness control component 3 includes an upper adhesive unit 31 and a lower adhesive unit 32 respectively disposed on the upper and lower sides of the warping groove mold component 1. The upper adhesive sheet and the lower adhesive sheet are respectively laid on the working surfaces of the upper adhesive unit 31 and the lower adhesive unit 32. The lower adhesive unit 32 is provided with graduated positioning posts 321 at its four corners. The upper adhesive unit 31 is provided with guide holes 311 that cooperate with the positioning posts 321, so as to achieve a parallelism error of ≤0.02mm on the bonding surface and ensure uniform pressure distribution during the pressing process.

[0027] A film pressing device 4 is installed above the upper adhesive unit 31 and below the lower adhesive unit 32. The film pressing device 4 includes a flat pressing plate 41 and a pressure driving device 42. The pressure driving device 42 applies pressure evenly to the upper adhesive unit, the warping groove mold assembly, and the lower adhesive unit through the flat pressing plate 41. The upper adhesive unit, the warping groove mold assembly, and the lower adhesive unit are precisely aligned, and the pressure driving device applies uniform pressure. The pressure adjustment range of the pressure driving device is 0.5-5MPa. According to the film material and the thickness requirements of the steel cord fabric, the pressing pressure of the upper and lower adhesive units is precisely controlled simultaneously to ensure uniform film pressing. The thickness error of the steel cord fabric is ≤±0.08mm, avoiding the steel cord fabric being too thin due to excessive pressure, or the steel cord fabric not being fully filled with adhesive due to insufficient pressure.

[0028] In a further preferred embodiment, groove mounting slots 12 are provided on two pairs of sides of the mold cavity body 11. The groove mounting slots 12 are detachably connected to groove plates 13, and warping grooves 14 are provided on the groove plates 13. By replacing different groove plates 13, warping grooves 14 with different groove spacing and / or groove widths can be obtained to suit the preparation of samples with different steel wire cord densities.

[0029] Furthermore, the optimal clearance between the width of the warping groove 14 and the diameter of the steel cord is 0.02-0.05mm, which ensures that the steel cord can be smoothly inserted and prevents it from swaying in the groove. The length of the steel cord of the sample should be long enough, at least 20mm-50mm longer than the distance between the positioning clamps at both ends of the same warping groove, to allow space for tensioning and fixing of the steel cord.

[0030] Furthermore, each positioning clamp 22 is provided with an anti-slip groove 221, and the surface of the anti-slip groove is provided with a rubber anti-slip pad, which can firmly clamp the end of the steel wire cord and prevent the steel wire cord from slipping off during tensioning.

[0031] In a further preferred embodiment, a guide rail 24 is provided between the tensioning device 23 and the tensioning base 21. The tensioning base 21 moves along the guide rail 24, which can prevent the steel wire cord from shifting during the tensioning process.

[0032] Both the upper adhesive unit 31 and the lower adhesive unit 32 are made of rigid materials and their surfaces are precision ground to a surface roughness Ra≤0.8μm, ensuring that the film is laid flat.

[0033] The dimensions of the upper and lower adhesive units are less than or equal to 120-30mm of the mold cavity body.

[0034] A positioning mechanism is provided between the upper surface of the lower flat pressing plate 411 and the lower surface of the lower adhesive coating unit 32 to ensure accurate positioning of the lower adhesive coating unit.

[0035] The working surfaces of the warping groove mold assembly 1, the upper adhesive coating unit 31, and the lower adhesive coating unit 32 are all chrome-plated with a coating thickness of 0.02 mm, which can effectively prevent the film from sticking to the surface of the device and reduce damage to the sample surface.

[0036] The specific steps for preparing small-width, well-formed steel wire cord fabric samples using the above-mentioned sample preparation apparatus are as follows: 1. Equipment commissioning and preparation Based on the parameters of the target sample (steel cord density, steel cord diameter, film thickness, and steel cord fabric thickness), select the corresponding groove plate 13 with the appropriate groove spacing and width, install it into the mold cavity body 11, and tighten the groove plate locking bolts 15 to ensure that the groove plate 13 is firmly installed without loosening; check the steel cord tensioning and positioning assembly 2 to ensure that the positioning clamp 22 and tensioning device 23 are effective, the sliding tensioning base 25 moves flexibly and is undamaged, and adjust the tension force to the preset range; check the film pressing device 4 and preset the pressing pressure.

[0037] 2. Layout of steel wire cords Select the appropriate steel wire cords, put on special rubber gloves, and place the cut steel wire cords one by one into the warp groove 14, ensuring that the steel wire cords are completely attached to the bottom of the groove without bending or crossing.

[0038] 3. Tensioning and fixing of steel wire cord Each steel wire cord is clamped at both ends by positioning clamps 22, ensuring that the ends of the steel wire cord are firmly held by the anti-slip grooves. The tensioning device 23 is activated, and the sliding tensioning base 25 moves the positioning clamps 22 outwards along the guide rail 24, gradually tightening the steel wire cord. The tension force is monitored by a tension force detector. When the tension force reaches the preset value (5-30N, adjusted according to the diameter and material of the steel wire cord), the controller stops the tensioning device 23, the positioning clamps are fixed in position, and the tensioning of the steel wire cord is completed. At this point, the steel wire cord is in a straight and taut state, with no tendency to loosen or retract.

[0039] 4. Laying the film Cut the upper and lower film sheets to a size ±5mm from the film size markings on the upper and lower film covering units, ensuring complete coverage of the mold cavity body 11 area. Lay the upper and lower film sheets onto the working surfaces of the upper film covering unit 31 and the lower film covering unit 32 respectively, ensuring the film sheets are laid flat without wrinkles or air bubbles.

[0040] 5. Precise alignment and pressing Place the lower adhesive unit 32 on the flat pressing plate 41 on the lower side of the film pressing device 4, and position it by the groove. Then, align the warping groove mold assembly 1 and the upper adhesive unit 31 sequentially by using the graduated positioning pins 321 of the lower adhesive unit to ensure that the warping groove mold assembly is located between the upper and lower adhesive units and that the warping groove is completely aligned with the film. Start the film pressing device 4, apply the pressing force according to the preset pressure, maintain the pressure, expel the air between the film and the steel cord, so that the film and the steel cord are tightly bonded, and fill the space between the steel cords with adhesive.

[0041] 6. Sample removal and preparation When the fabric thickness reaches the target value, stop pressing and close the film pressing device 4; loosen the steel cord tensioning and positioning component 2, remove the sample, and trim away excess film and steel cord ends to obtain a small-width, well-formed steel cord fabric sample for subsequent performance testing. Example

[0042] Based on the sample parameters (30 wire cords / dm, wire cord diameter φ1.82mm, film thickness 1.45mm, fabric thickness 3.5mm), a groove plate 13 with a groove spacing of 1.48mm and a groove width of 1.85mm is selected. The groove plate is fixed to the mold cavity body 11 by the groove plate mounting groove 12 and the groove plate locking bolts 15, ensuring that the groove plate 13 fits tightly with the mold cavity body 11 without looseness. Wearing special rubber gloves, the wire cords 5 are placed one by one into the warping groove 14, a total of 60 wire cords (corresponding to the sample cord width of 200mm) are placed, ensuring that each wire cord fits the bottom of the groove without bending or crossing.

[0043] Steel cord tensioning and positioning components 2 are installed at both ends of the warping groove mold assembly 1. Positioning clamps 22 are installed on the fixed tensioning base 21 and the sliding tensioning base 25, and fixed with positioning clamp locking bolts 222 to ensure one-to-one correspondence with the warping groove 14, with an alignment deviation ≤0.01mm. The anti-slip groove of the positioning clamp 22 has a tooth height of 0.2mm and a rubber anti-slip pad thickness of 1mm to ensure clamping stability. The positioning clamps 22 are fixed by the positioning clamp locking bolts 222 to clamp both ends of each steel cord. The tensioning device 23 is activated, driving the sliding tensioning base 25 to move the positioning clamps 22 outward along the guide rail 24. The tension is monitored by a tension force detector until the tension of each steel cord reaches 10N, at which point the movement stops.

[0044] The upper adhesive unit 31 and lower adhesive unit 32 of the steel cord fabric thickness control component 3 have a working surface roughness Ra=0.6μm. The positioning posts 321 with graduations at the four corners of the lower adhesive unit 32 have a diameter of 8mm and a surface straightness error ≤0.01mm. The guide holes 311 at the four corners of the upper adhesive unit 31 that match the positioning posts 321 have a diameter of 8.04mm. Film sheets 6 with dimensions of 220mm x 280mm (width x height) are cut along the calendering direction and laid on the working surfaces of the upper adhesive unit 31 and lower adhesive unit 32 respectively, ensuring that the film sheets are laid flat without wrinkles or air bubbles. The lower adhesive unit 32 is placed on the flat pressing plate 41 on the lower side of the film pressing device 4 and positioned by the groove. Then, the warping groove mold assembly 1 and the upper adhesive unit 31 are aligned sequentially through the graduated positioning post 321 of the lower adhesive unit 32 and the guide hole 311 of the upper adhesive unit 31, ensuring that the warping groove mold assembly 1 is located between the upper adhesive unit 31 and the lower adhesive unit 32, and the parallelism error of the bonding surface is 0.015mm, which meets the requirement of ≤0.02mm. The film pressing device 4 is started, and a pressure of 2MPa is applied. The pressure is maintained for 3 minutes to expel the air between the film 6 and the steel cord 5, so that the film 6 and the steel cord 5 are tightly bonded, and the adhesive is filled between the steel cords. Finally, close the film pressing device 4, loosen the steel cord tensioning and positioning component 1, take out the sample, and trim away the excess adhesive edge and steel cord ends to obtain a 220mm×280mm neat sample of small-width steel cord fabric for laboratory use.

[0045] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A laboratory small-width steel wire cord fabric sample preparation device, characterized in that: It includes a warping groove mold assembly (1), a steel wire cord tensioning and positioning assembly (2), a steel wire cord fabric thickness control assembly (3), and a film pressing device (4). The warping groove mold assembly (1) includes a mold cavity body (11) and a plurality of parallel warping grooves (14) arranged on the mold cavity body (11). The groove spacing of the warping grooves (14) is matched with the wire cord density of the sample, the groove width is matched with the wire cord diameter, and the groove length is not less than the sample length. The steel cord tensioning and positioning assembly (2) includes a fixed tensioning base (21) and a sliding tensioning base (25) respectively set at both ends of the warping groove (14). The fixed tensioning base (21) and the sliding tensioning base (25) are each provided with a positioning clamp (22). The positioning clamp (22) corresponds to the warping groove and is used to clamp the end of the steel cord. A tensioning device (23) is set on the outside of the sliding tensioning base (25). The tensioning device (23) drives the sliding tensioning base (25) to move the positioning clamp (22) along the length of the warping groove to achieve tensioning and fixing of the steel cord. A tension force detector is clamped on each steel cord. The steel wire cord fabric thickness control component (3) includes an upper adhesive unit (31) and a lower adhesive unit (32) respectively set on the upper and lower sides of the warping groove mold component (1). The upper adhesive sheet and the lower adhesive sheet are respectively laid on the working surfaces of the upper adhesive unit (31) and the lower adhesive unit (32). The four corners of the lower adhesive unit (32) are provided with graduated positioning posts (321), and the upper adhesive unit (31) is provided with guide holes (311) that cooperate with the positioning posts (321). Film pressing device (4) is provided above the upper adhesive unit (31) and below the lower adhesive unit (32). The film pressing device (4) includes a flat pressing plate (41) and a pressure driving device (42). The pressure driving device (42) applies pressure evenly to the upper adhesive unit, the warping groove mold assembly and the lower adhesive unit through the flat pressing plate (41).

2. The laboratory small-width steel wire cord fabric regularized sample preparation device according to claim 1, characterized in that: The mold cavity body (11) has two pairs of groove plate mounting slots (12) on its sides. A groove plate (13) is detachably connected to the groove plate mounting slot (12). A warping groove (14) is provided on the groove plate (13).

3. The laboratory small-width steel wire cord fabric regularized sample preparation device according to claim 1, characterized in that: The gap between the width of the warping groove (14) and the diameter of the steel wire cord is 0.02-0.05mm; the length of the steel wire cord of the sample is at least 20mm-50mm longer than the distance between the positioning clamps at both ends of the same warping groove.

4. The laboratory small-width steel wire cord fabric regularization sample preparation device according to claim 1, characterized in that: Each positioning chuck (22) is provided with anti-slip grooves, and the surface of the anti-slip grooves is provided with rubber anti-slip pads.

5. The laboratory small-width steel wire cord fabric regularized sample preparation device according to claim 1, characterized in that: A guide rail (24) is provided between the tensioning device (23) and the tensioning base (21).

6. The laboratory small-width steel wire cord fabric regularized sample preparation device according to claim 1, characterized in that: The dimensions of the upper adhesive unit (31) and the lower adhesive unit (32) are less than or equal to the main body (1) of the warp groove mold cavity by 20-30 mm; the upper adhesive unit (31) and the lower adhesive unit (32) are both made of rigid materials with a surface roughness Ra≤0.8μm; the parallelism error of the mating surfaces of the upper adhesive unit (31) and the lower adhesive unit (32) is ≤0.02 mm.

7. The laboratory small-width steel wire cord fabric regularized sample preparation device according to claim 1, characterized in that: A positioning mechanism is provided between the upper surface of the lower flat pressing plate (411) and the lower surface of the lower adhesive unit (32).

8. The laboratory small-width steel wire cord fabric regularized sample preparation device according to claim 1, characterized in that: The working surfaces of the warping groove mold assembly (1), the upper adhesive unit (31) and the lower adhesive unit (32) are all chrome-plated with a coating thickness of 0.02 mm.

9. A method for preparing a laboratory-sized steel wire cord fabric specimen, characterized in that, Sample preparation using the sample preparation apparatus according to any one of claims 1-8 includes the following steps: S1: Select appropriate groove spacing and groove width for warping grooves (14) based on the wire cord density, wire cord diameter and sample size of the target sample. S2: Place the steel cord (5) into the warping groove (14) one by one, clamp the two ends of the steel cord (5) through the positioning clamp (22) of the steel cord tensioning and positioning assembly (2), adjust the tensioning device (23) to make the sliding tensioning base (25) move outward, and after the tension of the steel cord reaches the set value, the tensioning device (23) stops operating and the position of the positioning clamp is fixed. S3: The cut film (6) is laid on the lower adhesive unit (32) and upper adhesive unit (31) of the steel wire cord thickness control component (3), and the film completely covers the warp groove area. S4: Place the lower adhesive unit (32) with the laid film (6) below the warping groove mold assembly (1), lay the cut upper film on the arranged steel wire cord, and place the upper adhesive unit (31) through the guide hole (311) and the positioning post (321). S5: Operate the film pressing device (4) and apply the set pressure to the upper adhesive unit (31) and the lower adhesive unit (32) at the same time to expel the air between the film (6) and the steel cord (5). When the fabric thickness reaches the target value, stop pressing. S6: Loosen the steel cord tensioning and positioning component (2), take out the sample, cut off the excess film and steel cord ends to obtain a laboratory small-width steel cord fabric regular sample.

10. The method for preparing a laboratory small-width steel wire cord fabric regularized sample according to claim 9, characterized in that, In S2, the tension of the steel cord is set to 5-30N; in S5, the pressure applied by the film pressing device (4) to the upper adhesive unit (31) and the lower adhesive unit (32) is maintained at 0.5-5MPa.

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