Mechanism and method for preparing fiber composite material interface bonding strength test sample piece

Abstract

The invention discloses a mechanism and method for preparing a fiber composite material interface bonding strength test sample piece, and relates to the technical field of material interface bonding strength test.The mechanism comprises a transmission base, a wrapping type movable base, a rack, an instillation device and a fiber sample; the rack comprises a horizontal base and a vertical support arranged at one end of the horizontal base, the transmission base and the coating type movable base are both arranged on the horizontal base in a sliding mode, the instillation device is installed on the vertical support, the fiber sample is installed between the top of the transmission base and the top of the coating type movable base, and the instillation device corresponds to the fiber sample in position. Accurate positioning of a fiber sample can be achieved through the transmission base and the coating type moving base, and the instillation device can accurately control the size of the base body to prepare a composite material. According to the mechanism, sample preparation errors are reduced, cost consumption is reduced, and the interface strength performance testing precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of testing the interfacial bonding strength of materials, and more specifically to the technical field of an apparatus and method for preparing test specimens for testing the interfacial bonding strength of fiber composites. It is applicable to the preparation of composites by the single-filament embedding method and is an apparatus for improving the test accuracy of interfacial strength performance. Background Art

[0002] Fiber composites have excellent mechanical properties and exhibit unique advantages in many fields, becoming key materials to promote the progress of various industries. At present, there is still a large room for improvement in the performance of fiber composites. Among them, the interfacial strength problem between fibers and the matrix has become a key bottleneck restricting its further development. Among them, the single-filament embedding method, as a classic means for preparing fiber composites for interfacial bonding strength testing, although it has certain operational convenience, has problems of inability to accurately position and directionally control, which leads to uneven adhesion distances and volume sizes of the matrix on the fibers, causing serious imbalance in test load transfer, and greatly weakening the overall mechanical properties of the composite material and the test accuracy of the interfacial bonding performance.

[0003] Aiming at the test of fiber interfacial bonding performance, solving the problem of errors in specimen preparation by the single-filament embedding method, breaking through the precise positioning and directional control technology of specimen preparation, improving the test accuracy of interfacial strength performance, and developing an apparatus for high-precision preparation of specimens for improving the interfacial bonding strength of fiber composites, which can achieve precise positioning of the single-filament embedding method and accurately control the matrix volume size, improve the test accuracy of interfacial strength performance, and reduce costs are the efforts of those skilled in the art. Summary of the Invention

[0004] The purpose of the present invention is to provide an apparatus and method for preparing test specimens for testing the interfacial bonding strength of fiber composites in order to solve the above technical problems.

[0005] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0006] A first aspect of the present invention provides an apparatus for preparing test specimens for testing the interfacial bonding strength of fiber composites, including a drivable base, a covered movable base, a bench, a dropping device, and a fiber specimen;

[0007] The bench includes a horizontal base and a vertical support provided at one end of the horizontal base. The drivable base and the covered movable base are both slidably provided on the horizontal base. The dropping device is installed on the vertical support, and the fiber specimen is installed between the tops of the drivable base and the covered movable base, and the dropping device corresponds to the position of the fiber specimen.

[0008] In one embodiment, the horizontal base is a rectangular base. A strip-shaped groove is provided on the upper surface of the horizontal base along the length direction, and a guide rail is arranged in the strip-shaped groove along the length direction. A transmission screw support seat is fixedly arranged at one end of the horizontal base away from the vertical bracket. The drivable base and the wrapped moving base can slide and adjust their positions on the horizontal base through the guide rail.

[0009] A vertical mounting plate is arranged at the top of the vertical bracket, and a mounting component for mounting the drip device is arranged on the vertical mounting plate.

[0010] In one embodiment, the mounting component includes an upper cylinder fixing block, a middle cylinder fixing block, a vertical slideway, a fastening bolt, a clamping block and a tightening nut.

[0011] The upper cylinder fixing block, the middle cylinder fixing block and the vertical slideway are arranged on the vertical mounting plate in sequence from top to bottom. The clamping block is slidably arranged on the vertical slideway, and the fastening bolt locks the clamping block on the vertical slideway. The drip device is locked by the upper cylinder fixing block, the middle cylinder fixing block and the clamping block.

[0012] Specifically, the uses of each component are as follows: the upper cylinder fixing block, the middle cylinder fixing block and the clamping block are used to place the drip device. The tightening nut fixes the drip device, controls the position of the clamping block through the vertical slideway, and is fixed by the fastening bolt.

[0013] In one embodiment, the drip device includes a knob cap, an upper knob body cylinder, a middle knob body cylinder, a screw, a graduated sleeve and a probe arranged in sequence from top to bottom. The upper end of the upper knob body cylinder is connected to the knob cap and forms a sleeve with the middle knob body cylinder, and can move on the middle knob body cylinder. The middle knob body cylinder is provided with a backlash nut formed by an internal thread cylinder and a spring sleeved outside the internal thread cylinder. The upper end of the screw is sequentially connected to the upper knob body cylinder and the knob cap through the backlash nut. The lower end of the screw passes through the threaded holes on the upper cylinder fixing block and the middle cylinder fixing block, and the end of the screw extends into the graduated sleeve and is connected to the piston of the graduated sleeve. The top of the probe communicates with the bottom of the graduated sleeve.

[0014] A vertically arranged positioning groove for placing the graduated sleeve is arranged on the outer side wall of the clamping block, and the clamping block is locked in the positioning groove by the tightening nut.

[0015] Specifically, during operation, the substrate is placed into the graduated sleeve and the graduated sleeve is fixed. Since the graduated sleeve and the probe are commercial products, they are easy to replace and have low cost. By rotating the knob cap, the movement of the screw in the upper knob body cylinder and the middle knob body cylinder is changed, so as to change the position of the screw in the graduated sleeve, and the volume of the substrate flowing into the probe in the graduated sleeve can be accurately controlled by the number of rotations of the knob cap.

[0016] In one embodiment, the drivable base includes a splint adjusting screw, an upper splint, a lower splint, a movable base, and a linear drive mechanism; the movable base is slidably disposed on the horizontal base, the linear drive mechanism drives the movable base to reciprocate on the horizontal base, the lower splint is fixed to the top of the movable base, the upper splint is adjustably disposed above the lower splint by the splint adjusting screw, and a gap for clamping one end of the fiber specimen is formed between the upper splint and the lower splint.

[0017] In one embodiment, the linear drive mechanism includes a transmission screw, a threaded hole, a first guide rail hole, and a rotary drive mechanism; the threaded hole is provided on the movable base and cooperates with the transmission screw, the first guide rail hole is provided at the bottom of the movable base, the guide rail is slidably engaged with the first guide rail hole, the rotary drive mechanism is connected to the transmission screw, and a thread pair cooperating with the transmission screw is provided on the transmission screw support seat.

[0018] In one embodiment, the rotary drive mechanism includes a drive motor or a manual drive mechanism, and the manual drive mechanism is a crank handle, which is provided at the other end of the transmission screw away from the movable base.

[0019] Specifically, during operation, one end of the specimen with a test paper chuck is placed on the lower splint of the movable base, the upper splint is moved to clamp the specimen, and is fixed by the splint adjusting screw. The movable base can change its position on the guide rail through the first guide rail hole by rotating the crank handle to make the transmission screw move.

[0020] In one embodiment, the wrapped movable base includes a specimen tightening nut, a specimen placement groove, a wrapped movable base, a second guide rail hole, and a locking handle; a sliding groove is provided at the bottom of the wrapped movable base and is slidably clamped on the horizontal base, the sliding groove on the horizontal base is locked to the horizontal base by the locking handle, the specimen placement groove is provided at the top of the wrapped movable base, one end of the fiber specimen is locked in the specimen placement groove by the specimen tightening nut, the second guide rail hole is provided at the inner bottom of the sliding groove, and the second guide rail hole is slidably engaged with the guide rail.

[0021] Specifically, during operation, the fiber specimen is placed in the specimen placement groove and reinforced by the specimen tightening nut. The specimen placement groove is fixed to the wrapped movable base and changes its position through it. The wrapped movable base can move along the horizontal base and is fixed in position by the locking handle.

[0022] In one embodiment, the fiber specimen includes a fiber and a test paper chuck provided at one end of the fiber. The test paper chuck is located between the upper splint and the lower splint. One end of the fiber away from the test paper chuck cooperates with the specimen placement groove, and the matrix in the dropping device is dropped on the surface of the fiber to form a composite material.

[0023] The second aspect of the present invention provides a method for using a test specimen preparation mechanism, which adopts the above-mentioned mechanism for preparing a test specimen for measuring the interfacial bonding strength of a fiber composite material, and includes the following steps:

[0024] S1. Place one end of the fiber specimen without the test paper chuck into the specimen placement groove, and reinforce it with the specimen tightening nut. Determine its position by adjusting the distance on the wrapped moving base on the guide rail in the horizontal base, and fix it with the locking handle.

[0025] S2. Place the end of the fiber specimen with the test paper chuck on the lower clamping plate of the wrapped moving base, move the upper clamping plate to clamp the specimen, fix the upper clamping plate and the lower clamping plate through the clamping plate adjusting screw, and rotate the crank handle to make the transmission screw change the position of the movable base on the horizontal base.

[0026] S3. Install the dropping device on the bench, place the upper cylinder of the knob body and the middle cylinder of the knob body on the upper cylinder fixing block and the middle cylinder fixing block respectively, and determine the initial position of the dropping device.

[0027] S4. Put the graduated sleeve into the positioning groove of the clamping block, move the position of the clamping block on the vertical slideway, and fix the clamping block by rotating the fastening bolt to determine the precise position of the dropping device.

[0028] S5. Rotate the knob cap, push the screw to move downward in the graduated sleeve, and extrude a precisely sized volume of matrix onto the surface of the fiber specimen to form a composite material.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. By using the device and method provided by the present invention, the fiber specimen can be accurately positioned through the drivable base and the wrapped moving base, and the dropping device can precisely control the volume of the matrix to prepare the composite material. This mechanism reduces the sample preparation error, reduces cost consumption, and improves the test accuracy of the interfacial strength performance.

[0031] 2. The dropping device places the matrix into the graduated sleeve. Since the graduated sleeve and the probe are commercial products, they are easy to replace and have a low cost. By rotating the knob cap, the movement of the screw in the upper cylinder and the middle cylinder of the knob body is changed, thereby changing the position of the screw in the graduated sleeve, and the volume of the matrix flowing into the probe in the graduated sleeve can be precisely controlled by the number of rotations of the knob cap. Description of the Drawings

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a schematic structural diagram of a mechanism for preparing a test specimen for measuring the interfacial bonding strength of a fiber composite material according to the present invention.

[0034] Figure 2 It is a schematic structural diagram of a drivable base.

[0035] Figure 3 It is a schematic structural diagram of a covered movable base.

[0036] Figure 4 It is a schematic structural diagram of a bench.

[0037] Figure 5 It is a schematic structural diagram of a dropping device.

[0038] Figure 6 It is a schematic structural diagram when the upper clamping plate and the lower clamping plate cooperate with the fiber specimen.

[0039] Figure 7 It is a schematic partial structural diagram of the dropping device.

[0040] Reference numerals: 1, drivable base; 2, covered movable base; 3, bench; 4, dropping device; 5, fiber specimen;

[0041] 1-1, clamping plate adjusting screw; 1-2, upper clamping plate; 1-3, lower clamping plate; 1-4, movable base; 1-5, driving screw; 1-6, first guide hole; 1-7, crank;

[0042] 2-1, specimen tightening nut; 2-2, specimen placement groove; 2-3, covered movable base; 2-4, second guide hole; 2-5, locking handle;

[0043] 3-1, upper cylinder fixing block; 3-2, middle cylinder fixing block; 3-3, vertical slideway; 3-4, fastening bolt; 3-5, clamping block; 3-6, tightening nut; 3-7, vertical bracket; 3-8, guide rail; 3-9, horizontal base; 3-10, driving screw support seat;

[0044] 4-1, knob cap; 4-2, upper cylinder of the knob body; 4-3, middle cylinder of the knob body; 4-4, screw; 4-5, graduated sleeve; 4-6, probe;

[0045] 5-1. Fiber; 5-2. Test strip chuck; 5-3. Composite material. Detailed implementation mode

[0046] To make the technical problems, technical solutions and technical effects of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0048] It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0049] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inside", "outside", "above", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0050] Embodiment 1

[0051] As Figures 1 to 7 shown, this embodiment provides a mechanism for preparing a test piece for testing the interfacial bonding strength of a fiber composite material, including a drivable base 1, a covered moving base 2, a bench 3, a dropping device 4 and a fiber specimen;

[0052] The bench includes a horizontal base 3-9 and a vertical bracket 3-7 provided at one end of the horizontal base 3-9. The drivable base 1 and the covered moving base 2 are both slidably provided on the horizontal base 3-9. The dropping device 4 is installed on the vertical bracket 3-7. The fiber specimen 5 is installed between the tops of the drivable base 1 and the covered moving base 2, and the dropping device 4 corresponds to the position of the fiber specimen 5.

[0053] Embodiment 2

[0054] This embodiment is a further optimization based on Embodiment 1, specifically:

[0055] The horizontal base 3-9 is a rectangular base. A strip-shaped groove is provided on the upper surface of the horizontal base 3-9 along the length direction, and a guide rail 3-8 is arranged in the strip-shaped groove along the length direction. A transmission screw support base 3-10 is fixedly arranged at one end of the horizontal base 3-9 away from the vertical bracket 3-7. The transmission base 1 and the wrapped moving base 2 can slide and adjust their positions on the horizontal base 3-9 through the guide rail 3-8.

[0056] A vertical mounting plate is provided at the top of the vertical bracket 3-7, and a mounting assembly for mounting the infusion device 4 is arranged on the vertical mounting plate.

[0057] The mounting assembly includes an upper cylinder fixing block 3-1, a middle cylinder fixing block 3-2, a vertical slideway 3-3, a fastening bolt 3-4, a clamping block 3-5, and a tightening nut 3-6.

[0058] The upper cylinder fixing block 3-1, the middle cylinder fixing block 3-2, and the vertical slideway 3-3 are arranged on the vertical mounting plate from top to bottom in sequence. The clamping block 3-5 is slidably arranged on the vertical slideway 3-3, and the fastening bolt 3-4 locks the clamping block 3-5 on the vertical slideway 3-3. The infusion device 4 is locked by the upper cylinder fixing block 3-1, the middle cylinder fixing block 3-2, and the clamping block 3-5.

[0059] Specifically, the uses of each component are as follows: The upper cylinder fixing block 3-1, the middle cylinder fixing block 3-2, and the clamping block 3-5 are used to place the infusion device 4. The tightening nut 3-6 fixes the infusion device 4, controls the position of the clamping block 3-5 through the vertical slideway 3-3, and is fixed by the fastening bolt 3-4.

[0060] Embodiment 3

[0061] This embodiment is a further optimization based on Embodiment 2, specifically:

[0062] The infusion device 4 includes a knob cap 4-1, a knob main body upper cylinder 4-2, a knob main body middle cylinder 4-3, a screw 4-4, a scale sleeve 4-5, and a probe 4-6 arranged in sequence from top to bottom; the upper end of the knob main body upper cylinder 4-2 is connected to the knob cap 4-1 and forms a sleeve with the knob main body middle cylinder 4-3, and can move on the knob main body middle cylinder 4-3. The knob main body middle cylinder 4-3 is provided with a backlash nut formed by an inner threaded cylinder and a spring sleeved outside the inner threaded cylinder. The upper end of the screw 4-4 is connected to the knob main body upper cylinder 4-2 and the knob cap 4-1 through the backlash nut in sequence. The lower end of the screw 4-4 passes through the threaded holes on the upper cylinder fixing block 3-1 and the middle cylinder fixing block 3-2, and the end of the screw 4-4 extends into the scale sleeve 4-5 and is connected to the piston of the scale sleeve 4-5. The top of the probe 4-6 is communicated with the bottom of the scale sleeve 4-5;

[0063] A vertical positioning groove for placing the scale sleeve 4-5 is provided on the outer wall of the clamping block 3-5, and the clamping block 3-5 is locked in the positioning groove by tightening the nut 3-6.

[0064] Specifically, during operation, the substrate is placed into the scale sleeve 4-5, and the scale sleeve 4-5 is fixed. Since the scale sleeve 4-5 and the probe 4-6 are commercial products, they are easy to replace and have low cost. By rotating the knob cap 4-1, the movement of the screw rod in the cylinder 4-2 of the knob main body and the middle cylinder 4-3 of the knob main body is changed, so as to change the position of the piston driven by the screw rod 4-4 in the scale sleeve 4-5, and the volume of the substrate flowing into the probe 4-6 in the scale sleeve 4-5 can be accurately controlled by the number of rotations of the knob cap 4-1.

[0065] Embodiment 4

[0066] This embodiment is further optimized on the basis of Embodiment 3. Specifically:

[0067] The drivable base 1 includes a clamping plate adjusting screw 1-1, an upper clamping plate 1-2, a lower clamping plate 1-3, a movable base 1-4 and a linear driving mechanism; the movable base 1-4 is slidably arranged on the horizontal base 3-9, the linear driving mechanism drives the movable base 1-4 to reciprocate on the horizontal base 3-9, the lower clamping plate 1-3 is fixed on the top of the movable base 1-4, and the upper clamping plate 1-2 is arranged above the lower clamping plate 1-3 with adjustable height through the clamping plate adjusting screw 1-1. A gap for clamping one end of the fiber specimen 5 is formed between the upper clamping plate 1-2 and the lower clamping plate 1-3.

[0068] The linear driving mechanism includes a transmission screw 1-5, a threaded hole, a first guide rail hole 1-6 and a rotary driving mechanism; the threaded hole is arranged on the movable base 1-4 and is matched with the transmission screw 1-5, the first guide rail hole 1-6 is arranged at the bottom of the movable base 1-4, the guide rail 3-8 is slidably matched with the first guide rail hole 1-6, the rotary driving mechanism is connected with the transmission screw 1-5, and a thread pair matched with the transmission screw 1-5 is arranged on the transmission screw support seat 3-10.

[0069] The rotary driving mechanism includes a driving motor or a manual driving mechanism, and the manual driving mechanism is a crank 1-7. The crank 1-7 is arranged at the other end of the transmission screw 1-5 away from the movable base 1-4.

[0070] Specifically, during operation, one end of the specimen with a test paper chuck is placed on the lower clamping plate 1-3 of the movable base 1-4, the upper clamping plate 1-2 is moved to clamp the specimen, and is fixed by the clamping plate adjusting screw 1-1. Among them, the movable base 1-4 can change its position on the guide rail through the first guide rail hole 1-6 by rotating the crank 1-7 to make the transmission screw 1-5 move.

[0071] Example 5

[0072] This example is a further optimization based on Example 4, specifically:

[0073] The wrapped mobile base 2 includes a specimen tightening nut 2-1, a specimen placement groove 2-2, a wrapped mobile base 2-3, a second guide rail hole 2-4, and a locking handle 2-5; a sliding groove is provided at the bottom of the wrapped mobile base 2-3 and is slidably clamped on the horizontal base 3-9, and the sliding groove on the horizontal base 3-9 is locked on the horizontal base 3-9 through the locking handle 2-5. The specimen placement groove 2-2 is arranged at the top of the wrapped mobile base 2-3. One end of the fiber specimen 5 is locked in the specimen placement groove 2-2 through the specimen tightening nut 2-1. The second guide rail hole 2-4 is arranged at the inner bottom of the sliding groove, and the second guide rail hole 2-4 is slidably matched with the guide rail 3-8.

[0074] Specifically, during operation, the fiber specimen 5 is placed in the specimen placement groove 2-2 and reinforced by the specimen tightening nut 2-1. Among them, the specimen placement groove 2-2 is fixed on the wrapped mobile base 2-3 and its position is changed through it. The wrapped mobile base 2-3 can move along the horizontal base 3-9 and its position is fixed through the locking handle 2-5.

[0075] The fiber specimen 5 includes a fiber 5-1 and a test paper chuck 5-2 arranged at one end of the fiber 5-1. The test paper chuck 5-2 is located between the upper clamping plate 1-2 and the lower clamping plate 1-3. One end of the fiber 5-1 far from the test paper chuck 5-2 is matched with the specimen placement groove 2-2, and the matrix in the dropping device 4 is dropped on the surface of the fiber 5-1 to form a composite material 5-3.

[0076] Example 6

[0077] This example provides a method for using a test specimen preparation mechanism, which adopts the above-mentioned mechanism for preparing a test specimen for the interfacial bonding strength of a fiber composite material, and includes the following steps:

[0078] S1. Place the end of the fiber specimen 5 without the test paper chuck into the specimen placement groove 2-2 and reinforce it with the specimen tightening nut 2-1. Determine its position by adjusting the distance on the wrapped mobile base 2-3 on the guide rail 3-8 in the horizontal base 3-9, and fix it with the locking handle 2-5;

[0079] S2. Place the end of the fiber specimen 5 with the test paper chuck on the lower clamping plate 1-3 of the wrapped mobile base 2-3, move the upper clamping plate 1-2 to clamp the specimen, fix the upper clamping plate 1-2 and the lower clamping plate 1-3 through the clamping plate adjusting screw 1-1, and rotate the crank 1-7 to make the transmission screw 1-5 change the position of the movable base 1-4 on the horizontal base 3-9.

[0080] S3. Install the dropping device 4 on the bench 3. Place the upper cylinder 4-2 and the middle cylinder 4-3 of the knob body on the upper cylinder fixing block 3-1 and the middle cylinder fixing block 3-2 respectively to determine the initial position of the dropping device 4.

[0081] S4. Put the graduated sleeve 4-5 into the positioning groove of the clamping block 3-5. Move the position of the clamping block 3-5 on the vertical slideway 3-3 and rotate the fastening bolt 3-4 to fix the clamping block 3-5 to determine the precise position of the dropping device 4.

[0082] S5. Rotate the knob cap 4-1 to push the screw rod 4-4 to move downward in the graduated sleeve 4-5, extruding a matrix with precise volume onto the surface of the fiber specimen 5 to form a composite material 5-3.

Claims

1. A mechanism for preparing fiber composite material interface bonding strength test specimens, characterized in that: It comprises a traversable base (1), a covering movable base (2), a stand (3), a dripping device (4) and a fiber sample (5); The stand (3) comprises a horizontal base (3-9) and a vertical support (3-7) arranged at one end of the horizontal base (3-9); the traversable base (1) and the enclosed movable base (2) are both slidably arranged on the horizontal base (3-9); the dripping device (4) is installed on the vertical support (3-7); the fiber sample (5) is installed between the traversable base (1) and the top of the enclosed movable base (2); and the dripping device (4) corresponds to the position of the fiber sample (5).

2. The mechanism for preparing a fiber composite material interface bonding strength test sample according to claim 1, characterized in that: The horizontal base (3-9) is a rectangular base, the upper surface of the horizontal base (3-9) is provided with a strip groove along the length direction, a guide rail (3-8) is provided in the strip groove along the length direction, a transmission screw support seat (3-10) is fixedly provided at one end of the horizontal base (3-9) away from the vertical bracket (3-7), and the drivable base (1) and the enveloping movable base (2) are slidably adjusted on the horizontal base (3-9) through the guide rail (3-8); A vertical mounting plate is arranged on the top of the vertical support (3-7), and a mounting assembly for mounting the dripping device (4) is arranged on the vertical mounting plate.

3. The mechanism for preparing a fiber composite material interface bonding strength test sample according to claim 2, characterized in that: The installation assembly comprises an upper cylinder fixing block (3-1), a middle cylinder fixing block (3-2), a vertical slideway (3-3), a fastening bolt (3-4), a clamping block (3-5) and a tightening nut (3-6); The upper cylinder fixing block (3-1), the middle cylinder fixing block (3-2), and the vertical slideway (3-3) are sequentially arranged on the vertical mounting plate from top to bottom; the clamping block (3-5) is slidably arranged on the vertical slideway (3-3); the fastening bolt (3-4) locks the clamping block (3-5) on the vertical slideway (3-3); the dripping device (4) passes through the upper cylinder fixing block (3-1), the middle cylinder fixing block (3-2), and the clamping block (3-5) in sequence and is locked by tightening the nut (3-6).

4. The mechanism for preparing a fiber composite material interface bonding strength test sample according to claim 3, characterized in that: The dripping device (4) comprises a knob cap (4-1), a knob body upper tube (4-2), a knob body middle tube (4-3), a screw (4-4), a scale sleeve (4-5) and a probe (4-6) which are arranged in sequence from top to bottom; the upper end of the knob body upper tube (4-2) is connected to the knob cap (4-1) and forms a sleeve with the knob body middle tube (4-3) and can move on the knob body middle tube (4-3); the knob body middle tube (4-3) is provided with an internal threaded tube and a sleeve arranged on the internal threaded tube. The spring outside the threaded cylinder forms an anti-backlash nut, the upper end of the screw rod (4-4) is connected to the upper cylinder (4-2) of the knob body and the knob cap (4-1) in sequence through the anti-backlash nut, the lower end of the screw rod (4-4) passes through the threaded holes on the upper cylinder fixing block (3-1) and the middle cylinder fixing block (3-2), the end of the screw rod (4-4) extends into the scale sleeve (4-5) and is connected to the piston of the scale sleeve (4-5), and the top of the probe (4-6) is connected to the bottom of the scale sleeve (4-5); A vertically arranged positioning groove for accommodating the scale sleeve (4-5) is arranged on the outer side wall of the clamping block (3-5), and the clamping block (3-5) is locked in the positioning groove by tightening the nut (3-6).

5. The mechanism for preparing a fiber composite material interface bonding strength test sample according to claim 2, characterized in that: The drivable base (1) comprises a clamping plate adjusting screw (1-1), an upper clamping plate (1-2), a lower clamping plate (1-3), a movable base (1-4) and a linear drive mechanism; The movable base (1-4) is slidably arranged on the horizontal base (3-9), the linear drive mechanism drives the movable base (1-4) to reciprocate on the horizontal base (3-9), the lower clamping plate (1-3) is fixed on the top of the movable base (1-4), the upper clamping plate (1-2) is arranged above the lower clamping plate (1-3) in a height-adjustable manner through the clamping plate adjusting screw (1-1), and a gap is formed between the upper clamping plate (1-2) and the lower clamping plate (1-3) for clamping one end of the fiber sample (5).

6. The mechanism for preparing a fiber composite material interface bonding strength test sample according to claim 5, characterized in that: The linear drive mechanism comprises a transmission screw (1-5), a threaded hole, a first guide rail hole (1-6) and a rotation drive mechanism; the transmission screw support seat (3-10) is provided with a threaded hole matched with the transmission screw (1-5), the threaded hole is arranged on the movable base (1-4) and matched with the transmission screw (1-5), the first guide rail hole (1-6) is arranged at the bottom of the movable base (1-4), the guide rail (3-8) is slidably matched with the first guide rail hole (1-6), and the rotation drive mechanism is connected to the transmission screw (1-5).

7. The mechanism for preparing a fiber composite material interface bonding strength test sample according to claim 6, characterized in that: The rotary drive mechanism comprises a drive motor or a manual drive mechanism, wherein the manual drive mechanism is a crank (1-7), and the crank (1-7) is arranged at the other end of the transmission screw (1-5) away from the movable base (1-4).

8. The mechanism for preparing a fiber composite material interface bonding strength test sample according to claim 6, characterized in that: The enclosed movable base (2) comprises a sample tightening nut (2-1), a sample placement groove (2-2), an enclosed movable base (2-3), a second guide rail hole (2-4) and a locking handle (2-5); a sliding groove slidably engaged with the horizontal base (3-9) is arranged at the bottom of the enclosed movable base (2-3); the sliding groove on the horizontal base (3-9) is locked on the horizontal base (3-9) by the locking handle (2-5); the sample placement groove (2-2) is arranged at the top of the enclosed movable base (2-3); one end of the fiber sample (5) is locked in the sample placement groove (2-2) by the sample tightening nut (2-1); the second guide rail hole (2-4) is arranged at the bottom of the sliding groove; the second guide rail hole (2-4) is slidably matched with the guide rail (3-8).

9. The mechanism for preparing a fiber composite material interface bonding strength test sample according to claim 8, characterized in that: The fiber sample (5) comprises a fiber (5-1) and a test paper chuck (5-2) arranged at one end of the fiber (5-1); the test paper chuck (5-2) is located between the upper clamping plate (1-2) and the lower clamping plate (1-3); the end of the fiber (5-1) away from the test paper chuck (5-2) cooperates with the sample placement groove (2-2); the matrix in the dripping device (4) is dripped onto the surface of the fiber (5-1) to form a composite material (5-3).

10. A method for using a test sample preparation mechanism, using a fiber composite material interface bonding strength test sample preparation mechanism according to any one of claims 1 to 9, characterized in that: The steps include: S1. Place the end of the fiber sample (5) without the test paper chuck into the sample placement groove (2-2), and tighten the sample with the sample tightening nut (2-1). Determine its position by adjusting the distance on the enveloping movable base (2-3) on the guide rail (3-8) in the horizontal base (3-9), and fix it with the locking handle (2-5); S2, placing one end of the fiber sample (5) with the test paper clamp on the lower clamping plate (1-3) of the wrapped movable base (2-3), moving the upper clamping plate (1-2) to clamp the sample, fixing the upper clamping plate (1-2) and the lower clamping plate (1-3) by the clamping plate adjusting screw (1-1), and rotating the crank (1-7) to make the transmission screw (1-5) change the position of the movable base (1-4) on the horizontal base (3-9); S3, installing the dripping device (4) on the stand (3), placing the knob body upper tube (4-2) and the knob body middle tube (4-3) on the upper tube fixing block (3-1) and the middle tube fixing block (3-2), respectively, and determining the initial position of the dripping device (4); S4, placing the scale sleeve (4-5) into the positioning groove of the clamping block (3-5), moving the clamping block (3-5) on the vertical slideway (3-3), turning the fastening bolt (3-4) to fix the clamping block (3-5), and determining the precise position of the dripping device (4); S5. Turn the knob cap (4-1) to push the screw (4-4) downward in the graduated sleeve (4-5), and extrude a precise volume of matrix to drop on the surface of the fiber sample (5), thereby forming a composite material (5-3).

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