Adhesive shear test piece sample preparation device

Abstract

The utility model discloses an adhesive shear test piece sample preparation device, which belongs to the technical field of adhesive material mechanical property shear test and comprises a base and a plurality of accommodating grooves, and the accommodating grooves are arranged on the base and used for accommodating shear samples; the front side and the back side of the base are each provided with a containing groove, each containing groove comprises a first groove body and a second groove body, the first groove bodies and the second groove bodies are separately arranged and located on the two sides of the base, and the first groove bodies and the second groove bodies are in one-to-one correspondence; the first groove body and the second groove body have height differences relative to the normal direction of the front face or the back face, and the height differences between the first groove body and the second groove body of the front face and the back face are different. The height differences between the first groove bodies and the second groove bodies on the front face and the back face of the base are different, shearing sample pieces with different colloid thicknesses can be tested at the same time, the testing efficiency is high, a lifting assembly is not needed, and the structure is simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of adhesive material mechanics performance shearing test, concretely relates to a kind of adhesive shearing test piece sample preparation device. BACKGROUND

[0002] As a connecting material, adhesive has been widely used in the fields of aviation, automobile, building, electronics, machinery manufacturing, etc. It gradually replaces traditional connection methods such as welding and riveting, and becomes an indispensable part of modern industry, with its unique performance advantages such as high strength, good sealing, aging resistance and corrosion resistance. With the continuous expansion of the application field of adhesive, the evaluation of its mechanical properties becomes more and more important. The shear strength of adhesive is one of the key indicators to measure its performance. Through shear test, the strength and stability of adhesive under shear force can be intuitively understood, providing reliable basis for product design, manufacturing and use.

[0003] Shear test needs to rely on shearing test piece device, such as the Chinese patent document with publication number CN117250108A discloses an adhesive shearing test piece preparation device, which includes a base, a lifting assembly and a lifting plate. The lifting plate has a first sample mounting portion for fixing a first sample on it. The lifting plate is installed on the base through the lifting assembly. The lifting plate has a second sample mounting portion for fixing a second sample on it. The second sample has a pasting portion extending out of the lifting plate. The pasting portion is opposite to the first sample. The lifting assembly is used to drive the pasting portion to approach or move away from the first sample. The device adjusts the thickness of the adhesive body through the lifting assembly. However, the lifting assembly structure is complex, and the lifting assembly needs to be adjusted in advance when testing the shearing sample of different adhesive thickness, which reduces the test efficiency. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an adhesive shearing test piece sample preparation device to solve the problem that the shearing test piece preparation device in the prior art needs to adjust the lifting assembly in advance when testing the shearing sample of different adhesive thickness, which reduces the test efficiency.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an adhesive shearing test piece sample preparation device, which includes a base and a plurality of accommodating grooves. The accommodating grooves are arranged on the base and used to accommodate shearing samples. The front and back surfaces of the base are provided with accommodating grooves. The accommodating grooves include first groove bodies and second groove bodies. The first groove bodies and the second groove bodies are arranged separately and located on both sides of the base. The first groove bodies correspond to the second groove bodies one by one. The first groove bodies and the second groove bodies have height difference relative to the normal direction of the front or back surface. The height difference between the first groove bodies and the second groove bodies of the front and back surfaces is different.

[0006] By the above technical scheme, the accommodating grooves are arranged on the front surface and the back surface of the base, the utilization rate of the base can be improved, and more shear samples can be accommodated in a single test. Moreover, the shear samples are arranged in pairs, and the accommodating grooves are divided into first groove bodies and second groove bodies, which can well adapt to the shear samples. The height difference between the first groove bodies and the second groove bodies on the front surface and the back surface of the base is different, the shear samples with different adhesive thicknesses can be tested at the same time, the test efficiency is high, and the lifting assembly is not needed, and the structure is simple.

[0007] Further, the accommodating grooves on the front surface and the back surface are located on the corresponding two sides of the base.

[0008] The accommodating grooves on the front surface and the back surface are arranged correspondingly, the space of the base can be fully utilized, the volume of the base is reduced, the base can adopt a strip-shaped structure, and a plurality of accommodating grooves can be arranged in the length direction of the strip-shaped structure.

[0009] Further, the first groove bodies on the front surface and the back surface are arranged correspondingly or staggered.

[0010] The first groove bodies on the front surface and the back surface are arranged correspondingly, the second groove bodies on the front surface and the back surface are also arranged correspondingly, and the structure of the base can be simplified. The first groove bodies on the front surface and the back surface are arranged staggered, the second groove bodies on the front surface and the back surface are also arranged staggered, the accommodating grooves on the front surface and the back surface are avoided from being located at the same position, and the structural strength of the base is increased.

[0011] Further, the accommodating grooves on the front surface and the back surface are located on the non-corresponding two sides of the base.

[0012] The accommodating grooves on the front surface and the back surface can be arranged on the adjacent two sides, in the case that the number of the accommodating grooves is increased, the length and the width of the base can be increased, the base presents a rectangular or even square structure, the area of the base in the horizontal direction is increased, and the stability of the base is increased.

[0013] Further, the base is provided with an adhesive discharge groove, and the adhesive discharge groove corresponds to the adhesive position of the shear sample.

[0014] When the shear sample is glued, the excess adhesive at the adhesive position needs to be scraped off, the scraped adhesive can be discharged through the adhesive discharge groove, and the adhesive is avoided from adhering to other positions of the base.

[0015] Further, the adhesive discharge groove penetrates the front surface and the back surface of the base, and is located between the first groove body and the second groove body.

[0016] The adhesive discharge groove is a through groove, which is convenient for scraping the adhesive at the adhesive position of the shear sample on the front surface and the back surface. Moreover, the through groove has the advantage that the scraped adhesive can be gathered, and the gathered adhesive can be cleaned after the base is taken away after the test work is completed.

[0017] Further, the pressing device is arranged corresponding to the accommodating grooves, and is used for pressing the shear sample; and the locking device is locked with the base.

[0018] The pressing device and the locking device are locked with the base to press the shear sample, so that the shear strength of the adhesive at the bonding position of the shear sample can be tested, and the stability of the shear sample can be ensured, and the docking error of the bonding position can be reduced.

[0019] Further, the pressing device is in a plate structure, and the length of the plate structure covers the range of all the accommodating grooves.

[0020] The plate structure has better integrity, and is simple in structure and easy to process.

[0021] Further, the pressing device is provided with a plurality of pressing holes along the length direction, the base is provided with locking holes corresponding to the positions of the pressing holes, the locking holes are provided with internal threads, the locking device is in a stud structure, and the locking device is locked with the locking holes through the pressing holes.

[0022] The locking device in the stud structure is locked with the locking holes provided with the internal threads through the pressing holes, so that the stability of the shear sample can be maintained.

[0023] Further, the locking device comprises two clamping portions, the two clamping portions are clamped on the pressing device and the base respectively, an elastic member is connected between the two clamping portions, and the elastic member is tensioned on the two clamping portions.

[0024] The locking device is locked with the base through the clamping portions and the elastic member, so that the shear sample can be pressed, and the stability of the shear sample can be maintained.

[0025] Compared with the prior art, the technical scheme has the following beneficial effects:

[0026] The adhesive shear sample preparation device comprises a base, a plurality of accommodating grooves are arranged on the front surface and the back surface of the base, and a pressing device and a locking device are arranged on the base.

[0027] It is apparent that the elements or features described in the above single embodiment can be used alone or in combination in other embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0028] In the drawings, the size and proportions of the products are not actual. The drawings are merely illustrative, and some unnecessary elements or features are omitted for clarity.

[0029] Figure 1 is a perspective structural schematic view of an embodiment of the present application;

[0030] Figure 2 is a top view structural schematic view of an embodiment of the present application;

[0031] Figure 3 is Figure 2 a sectional view at A-A in FIG. 1;

[0032] Figure 4 is a structural schematic view of a base in an embodiment of the present application;

[0033] Figure 5 is a structural schematic view of a pressing device in an embodiment of the present application;

[0034] Figure 6 is a structural schematic view of a locking device in an embodiment of the present application.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 100, base; 110, first groove; 120, second groove; 130, glue discharging groove; 140, locking hole; 200, pressing device; 210, pressing hole; 300, shearing sample; 400, locking device. DETAILED DESCRIPTION

[0037] The present application will be described in detail with reference to the drawings. What is described here is only the preferred embodiment according to the present application, and other ways that can realize the present application can be thought of by those skilled in the art on the basis of the preferred embodiment, and the other ways also fall within the scope of the present application.

[0038] Referring to Figures 1-6The embodiment provides an adhesive shear test piece sampling device, which comprises a base 100 and a plurality of accommodating grooves, and the number of the accommodating grooves can be one, two or even more. The plurality of accommodating grooves can improve the utilization rate of the base 100, and more shear samples 300 can be accommodated in a single test. The accommodating grooves are arranged on the base 100 and used for accommodating the shear samples 300. The shear samples 300 comprise two long strip-shaped plate-shaped pieces, and the end portions of the two long strip-shaped plate-shaped pieces are overlapped after being coated with adhesive. The front surface and the back surface of the base 100 are both provided with the accommodating grooves, and the accommodating grooves comprise first groove bodies 110 and second groove bodies 120. The first groove bodies 110 and the second groove bodies 120 are arranged separately and located on the two sides of the base 100, mainly on the opposite two sides of the base 100, and the first groove bodies 110 correspond to the second groove bodies 120. The shear samples 300 are arranged in pairs, and the accommodating grooves are divided into the first groove bodies 110 and the second groove bodies 120, so that the shear samples 300 can be well adapted. The first groove bodies 110 and the second groove bodies 120 have a height difference relative to the normal direction of the front surface or the back surface, and the height difference between the first groove bodies 110 and the second groove bodies 120 of the front surface and the back surface is different. The device can simultaneously test shear samples 300 with different adhesive thicknesses, has high test efficiency, does not need a lifting assembly and has a simple structure.

[0039] Specifically, the accommodating grooves on the front surface and the back surface are located on the corresponding two sides of the base 100. Figure 1 and Figure 4 As shown in the drawings, the accommodating grooves on the front surface and the back surface are arranged on the length direction sides of the base 100 and are distributed along the length direction. Moreover, the accommodating grooves on the front surface and the back surface are correspondingly arranged, so that the space of the base 100 can be fully utilized and the volume of the base 100 is reduced. The base 100 has a long strip-shaped structure, has a small volume and has a certain stability.

[0040] Furthermore, the first groove bodies 110 on the front surface and the back surface are correspondingly arranged, and the second groove bodies 120 on the front surface and the back surface are correspondingly arranged, so that the structure of the base 100 can be simplified. Alternatively, the first groove bodies 110 on the front surface and the back surface are misaligned, and the second groove bodies 120 on the front surface and the back surface are misaligned, so that the accommodating grooves on the front surface and the back surface are not located at the same position, the base 100 is not thinned at the same position on the front surface and the back surface, and the structural strength of the base 100 is increased.

[0041] In some embodiments, the accommodating grooves on the front surface and the back surface are located on the non-corresponding two sides of the base 100. It can be understood that the accommodating grooves on the front surface and the back surface can be arranged on the adjacent two sides of the base 100. In the case that the number of the accommodating grooves is increased, the length and the width of the base 100 can be increased, the base 100 has a rectangular or square structure, the horizontal area of the base 100 is increased, and the stability of the base 100 is increased.

[0042] It can be understood that the adhesive end of the shear sample 300 is bonded by the adhesive and is pressed, and the excess adhesive inevitably overflows the outside of the adhesive end of the shear sample 300, and the excess adhesive needs to be scraped off, and the scraped adhesive needs to be treated at a fixed point to avoid contaminating other positions of the base 100. Therefore, in some embodiments, as shown in Figure 1 、 Figure 2 and Figure 4 , the base 100 is provided with a glue removal groove 130 corresponding to the adhesive position of the shear sample 300. Specifically, the glue removal groove 130 is arranged through the front and back of the base 100, and the glue removal groove 130 is located between the first groove body 110 and the second groove body 120. The glue removal groove 130 is a through groove, which facilitates scraping the adhesive at the adhesive position of the shear sample 300 on the front and back. Moreover, the through groove has the advantage of gathering the scraped adhesive, and after the test work is completed, the gathered adhesive can be cleaned by removing the base 100, achieving the purpose of cleaning the excess adhesive at a fixed point.

[0043] In some embodiments, as shown in Figure 1 、 Figure 2 and Figure 3 , the sample preparation device further comprises a pressing device 200 and a locking device 400, the pressing device 200 is arranged corresponding to the accommodation groove position, used for pressing the shear sample 300; the locking device 400 cooperates with the base 100 to lock the pressing device 200. The pressing device 200 and the locking device 400 cooperate with the base 100 to press the shear sample 300, thereby facilitating the test of the shear strength of the adhesive at the adhesive position of the shear sample 300, and also ensuring the stability of the adhesive of the shear sample 300, reducing the docking error of the adhesive position.

[0044] As preferred, the pressing device 200 is a plate structure, which has better integrity and simple structure and is easy to process. The length of the plate structure covers the range of all accommodation grooves, which can ensure that the pressing device 200 is pressed on each group of shear samples 300. Further, the pressing device 200 is provided with a plurality of pressing holes 210 along the length direction thereof, the base 100 is provided with locking holes 140 corresponding to the positions of the pressing holes 210, and the locking holes 140 are provided with internal threads; the locking device 400 is a stud structure, and the locking device 400 passes through the pressing holes 210 and cooperates with the locking holes 140 to lock the pressing device 200, thereby maintaining the stability of the shear sample 300. The screw and thread structure is stable and easy to disassemble, which is convenient for disassembling and replacing the shear sample 300 on the base 100. In order to facilitate operation, as shown in Figure 6 , one end of the stud of the locking device 400 is a wrench structure, which is convenient for the operator to manually adjust the locking device 400 and thereby adjust the pressing degree on the shear sample 300.

[0045] It should be noted that the locking device 400 can adopt other types of locking mechanisms in addition to the cooperation structure of the stud and the threaded hole. In some embodiments, the locking device 400 includes two clamping parts, which are clamped on the compression device 200 and the base 100 respectively, and a elastic member connected between the two clamping parts. The locking device 400 presses the compression device 200 on the base 100 through the cooperation of the clamping parts and the elastic member, thereby compressing the shear sample 300 and maintaining the stability of the shear sample 300.

[0046] The shear sample 300 includes two abutting shear test pieces. With the horizontal plane as the reference, the end portions of the two shear test pieces are abutted one above the other. The operation steps of the device when testing the shear sample 300 are as follows:

[0047] (1) Fix the lower shear test piece

[0048] Place the shear test piece in the first groove body 110 of the base assembly 100, and fix the shear test piece by using the compression device 200; by tightening the locking device 400, the shear test piece is compressed and fixed in the first groove body 110.

[0049] (2) Glue coating

[0050] After determining the glue coating area and area of the shear sample 300, the adhesive to be tested is uniformly coated on the bonding surface of the shear test piece, and the glue coating operation is completed.

[0051] (3) Fix the upper shear test piece

[0052] Place the upper shear test piece bonded thereto in the second groove body 120 of the base assembly 100. After adjusting the bonding surfaces of the upper and lower shear samples 300, similar to the method described in step (1), use the locking device 400 and the compression device 200 to compress and fix the upper shear test piece.

[0053] (4) Remove excess glue

[0054] After the shear sample 300 is bonded, the excess glue on the front and back surfaces of the shear sample 300 can be removed by turning over the base 100 and using the corresponding tool, and waiting for the adhesive to solidify.

[0055] (5) Sample disassembly

[0056] After the adhesive solidifies, loosen the upper and lower locking devices 400, remove the compression device 200, and then remove the test piece assembly from the accommodating groove of the base 100, and wait for the next test.

[0057] In the description of the utility model, it is necessary to explain, the term "front", "back", "left", "right", "up", "down", "top", "bottom", "inner", "outer" and so on indicate the position relation or location relation is based on the position or location relation shown in the drawing, only is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the device or element indicated must have a particular orientation, with a particular orientation structure and operation, therefore can not be understood as the limitation of the utility model. In addition, the term "first", "second" is only for the purpose of description, and can not be understood as indicating or implying relative importance.

[0058] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0059] The protection scope of the utility model is only limited by the claims. Thanks to the teaching of the utility model, those skilled in the art can easily recognize that the alternative structure of the disclosed structure of the utility model can be used as a feasible alternative embodiment, and the disclosed embodiments of the utility model can be combined to produce new embodiments, which also fall within the scope of the appended claims.

Claims

1. An adhesive shear test specimen sampling device comprising a base (100) and a plurality of receiving slots provided on the base (100) for receiving a shear specimen (300); characterized in that, The front and back of the base (100) are provided with accommodating grooves, the accommodating grooves include first grooves (110) and second grooves (120), the first grooves (110) and the second grooves (120) are separately provided and located on two sides of the base (100), and the first grooves (110) correspond to the second grooves (120); the first grooves (110) and the second grooves (120) have a height difference relative to the normal direction of the front or the back, and the height difference between the first grooves (110) and the second grooves (120) of the front and the back is different.

2. The apparatus for preparing a specimen for adhesive shear testing of claim 1, wherein, The accommodating grooves of the front and the back are located on the corresponding two sides of the base (100).

3. The apparatus for preparing a specimen of an adhesive shear test piece according to claim 2, wherein The first grooves (110) of the front and the back are correspondingly provided or misaligned.

4. The apparatus for preparing a specimen for adhesive shear testing of claim 1, wherein, The accommodating grooves of the front and the back are located on the non-corresponding two sides of the base (100).

5. The apparatus for preparing a specimen for adhesive shear testing of claim 1, wherein, The base (100) is provided with a glue discharging groove (130), and the glue discharging groove (130) corresponds to the glue joint position of the shear sample (300).

6. The apparatus of claim 5, wherein the apparatus further comprises a cutting device. The glue discharging groove (130) is provided through the front and the back of the base (100), and the glue discharging groove (130) is located between the first grooves (110) and the second grooves (120).

7. The apparatus of claim 1, wherein the apparatus is configured to cut the specimen to a predetermined size. Further comprising a pressing device (200) and a locking device (400), the pressing device (200) is provided at the position corresponding to the accommodating groove and is used for pressing the shear sample (300); and the locking device (400) locks the pressing device (200) in cooperation with the base (100).

8. The apparatus of claim 7, wherein the apparatus further comprises a cutting device. The pressing device (200) is a plate structure, and the length of the plate structure covers the range of all the accommodating grooves.

9. The apparatus of claim 8, wherein the apparatus further comprises a cutting device. The pressing device (200) is provided with a plurality of pressing holes (210) along the length direction, the base (100) is provided with locking holes (140) at positions corresponding to the pressing holes (210), the locking holes (140) are provided with internal threads; and the locking device (400) is a stud structure, and the locking device (400) cooperates with the locking holes (140) through the pressing holes (210).

10. The apparatus of claim 8, wherein the apparatus further comprises a cutting device. The locking device (400) includes two clamping parts, the two clamping parts are clamped on the pressing device (200) and the base (100) respectively, and an elastic member is connected between the two clamping parts, and the elastic member tightens the two clamping parts.

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