A structural adhesive bonding specimen preparation device

Abstract

The application discloses a structural adhesive bonding sample preparation device, and belongs to the technical field of sample preparation. The device comprises a bottom plate and a pressing plate, the bottom plate is internally provided with a left-right open bonding cavity, two test plates are placed in the bonding cavity, a structural adhesive layer is arranged between the two test plates, a guide sliding frame is fixed to the upper end of the bottom plate, a connecting piece is inserted into the guide sliding frame, the connecting piece is in threaded connection with the pressing plate, a connecting rod is fixed to the bottom plate, a plug-in hole is formed in the pressing plate, the connecting rod is in plug-in cooperation with the plug-in hole, two front-rear cavities are formed in the middle end of the bottom plate, a front-rear open cavity is arranged in the middle end of the bottom plate, length plates and thickness plates are arranged at the two test plates, the thickness plates are used for adjusting the thickness of the structural adhesive layer, and two front-rear distributed cavities are arranged in the middle end of the bottom plate. After the pressing plate is pressed against the bottom plate, the structural adhesive layer squeezed between the two test plates can be conveniently cleaned by the staff, and the staff need not repeatedly position and align, so that the operation is simpler.

Description

Technical Field

[0001] This application relates to the field of sample preparation technology, and more specifically, to a structural adhesive bonding sample preparation device. Background Technology

[0002] In the performance testing system of structural adhesives, the accuracy of test results for key indicators such as tensile strength directly depends on the quality of sample preparation. Currently, the equipment and operating methods used in the industry for preparing structural adhesive strength test samples still have many problems affecting sample standardization. For example, existing equipment often relies on manual clamping or simple fixing structures, which makes it difficult to maintain the stability of the sample during the injection and curing process. Lateral slippage or longitudinal tilting is prone to occur, causing the dimensions of the structural adhesive to deviate from the preset standard after molding, and failing to truly reflect its bonding strength characteristics. If the sample does not fit the device well enough, gaps are easily generated during injection, resulting in uneven distribution of the structural adhesive on the sample surface, with some areas having excessively thick or thin adhesive layers. Ultimately, this leads to concentrated or dispersed stress points during strength testing, causing distorted test results.

[0003] Therefore, a structural adhesive bonding sample preparation device is needed to solve the above problems. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a structural adhesive bonding sample preparation device, comprising: a base plate and a pressure plate that are fitted together, the base plate having a left-right opening bonding cavity, two test plates placed in the bonding cavity, with an overlapping area between the two test plates, and a structural adhesive layer disposed in the overlapping area, a guide frame fixedly mounted on the upper end of the base plate, a connector inserted into the guide frame, the connector being threadedly connected and fixed to the pressure plate, a connecting rod fixedly mounted on the base plate, an insertion hole opened on the pressure plate, the connecting rod being inserted into the insertion hole, two concave cavities at the middle end of the base plate, a front-rear opening cavity at the middle end of the base plate, a length plate and a thickness plate disposed at the two test plates, the thickness plate being used to adjust the thickness of the structural adhesive layer, and the length plate being used to adjust the size of the bonding area between the two test plates.

[0006] Furthermore, the height of the insert rod is set to h1, the guide slide is provided with a sliding groove, the distance between the sliding rod and the bottom end of the base plate is set to h2, the lengths of h1 and h2 are equal, the pressure plate is threadedly connected to the connector, the guide slide is provided with a straight groove, the connector includes a threaded rod with a smaller radius and a rotating cap with a larger radius, the threaded rod abuts against the side wall of the straight groove, and the rotating cap abuts against the guide slide for limiting the position.

[0007] Furthermore, the bonding cavity is provided with positioning grooves on both the left and right sides of the cavity, and positioning blocks are fixed at both the front and rear ends of the thickness plate. The positioning blocks are inserted into the positioning grooves. Length plates are provided at the adjacent ends of the two thickness plates. The thickness plates have slots near the end of the test plate. Protrusions are fixed on the length plates and are inserted into the slots of the thickness plates and abut against the test plate from left to right. The thickness of the length plates is the same as that of the thickness plates. The thickness of the structural adhesive layer coated on the test plate is slightly higher than that of the thickness plates.

[0008] Furthermore, the upper end of the pressure plate is fixed with a plug rod, and the bottom plate is provided with a slot that is open at both the top and bottom. The plug rod is inserted into the slot at both the top and bottom, and the lower edge of the slot is chamfered. The length of the plug rod is greater than the depth of the slot.

[0009] Furthermore, a support block is fixed on the bottom wall of the cavity, and the upper end face of the support block is disposed on the same side as the lower side wall of the fitting cavity.

[0010] The beneficial effects of this application are as follows:

[0011] 1. The support block and the recessed cavity facilitate the cleaning of the structural adhesive layer squeezed out between the two test plates after the base plate and the pressure plate are pressed together. At the same time, it prevents the structural adhesive layer from directly contacting the side wall of the cavity during the pressing process, reducing the difficulty of cleaning and improving the user experience.

[0012] 2. The thickness plate is engaged with the positioning block and the positioning groove. By changing the thickness of the length plate and the thickness plate, the bonding thickness at the structural adhesive layer can be adjusted. By changing the left and right length of the length plate, the overlapping area between the two test plates can be adjusted. This eliminates the need for repeated positioning and alignment by personnel, making the operation simpler.

[0013] 3. By opening a straight groove on the guide rail, the connecting parts abut against the straight groove, thereby connecting the base plate and the pressure plate together, which is convenient to use and can adapt to the pressing of different adhesive thicknesses. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0015] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure according to one embodiment of this application;

[0018] Figure 2 yes Figure 1 Top view of the structure in the embodiment;

[0019] Figure 3 yes Figure 1 A schematic diagram of the front view structure in the embodiment;

[0020] Figure 4 yes Figure 2 A cross-sectional view of AA in the embodiment;

[0021] Figure 5 yes Figure 1 Explosion diagram in the embodiment;

[0022] Figure 6 yes Figure 5 A schematic diagram of the structure of the test plate, length plate, and thickness plate in the embodiment;

[0023] Figure 7 yes Figure 5 A magnified view of a portion of point B in the embodiment.

[0024] Figure label:

[0025] 10. Base plate; 11. Pressure plate; 12. Connecting rod; 13. Nut; 14. Guide rail; 15. Insert rod; 16. Connector; 17. Test plate; 18. Length plate; 19. Thickness plate; 20. Positioning block; 21. Protrusion; 22. Insertion hole; 23. Support block; 24. Positioning groove; 25. Slot; 26. Straight groove; 27. Fitting cavity; 28. Cavity; 29. ​​Recessed cavity; 30. Structural adhesive layer. Detailed Implementation

[0026] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0027] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0028] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0029] It should be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] It should be noted that, in this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0032] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Reference Figure 1A structural adhesive bonding sample preparation device includes: a base plate 10 and a pressure plate 11, which are disposed on top of each other. The base plate 10 is located at the bottom and abuts against the contact surface. The pressure plate 11 is located at the top and covers the upper end of the base plate 10. A test plate 17 for bonding is provided inside the base plate 10. A connecting rod 12 is fixedly provided on the base plate 10. The connecting rod 12 extends upward and passes through the pressure plate 11, and a nut 13 is threadedly connected to the upper end of the connecting rod 12 for pressing the pressure plate 11. Two guide rails 14 distributed front and rear are fixedly provided at the upper end of the base plate 10. The front and rear guide rails 14 of the pressure plate 11 are... Both ends are fixed with connectors 16, which are slidably and rotatably mounted in the guide frame 14. The upper end of the pressure plate 11 is fixed with four corner-distributed insert rods 15. The top of the base plate 10 is provided with a groove, in which two test plates 17 are placed. After applying structural adhesive to the close ends of the two test plates 17, the pressure plate 11 is placed on the upper end of the base plate 10. The pressure plate 11 is pressed by the threaded connection between the connecting rod 12 and the nut 13, so that the base plate 10 and the pressure plate 11 clamp the two test plates 17 from top to bottom for sample preparation.

[0034] Reference Figure 2-4 The base plate 10 has recesses 29 at both the front and rear ends. The height of the insertion rod 15 is h1. The guide slide 14 has a sliding groove. The distance between the sliding rod and the bottom end of the base plate 10 is h2. The lengths of h1 and h2 are equal. The base plate 10 has a cavity 28 that is open at both the front and rear ends. A support block 23 is fixed on the bottom wall of the cavity 28. Two test plates 17 are attached vertically, and a length plate 18 and a structural adhesive layer 30 are provided between the two test plates 17. The length plate 18 abuts against the test plates 17 from left to right. The support block 23 abuts against the lower end of the bottom test plate 17. The base plate 10 has slots 25 that correspond vertically to the insertion rod 15. The slots 25 are open vertically, and the lower edge of the slots 25 is chamfered. The two recesses 29 are connected to the base plate 10. 9. The distance between the front and rear ends of the base plate 10 and the pressure plate 11 at the middle position is reduced, thereby shortening the distance between the side wall of the cavity 29 and the front and rear ends of the test plate 17. This makes it easier for users to clean the structural adhesive layer 30 squeezed out after the base plate 10 and the pressure plate 11 are pressed together through the cavity 29, preventing the structural adhesive from curing and becoming impossible to clean, thus affecting subsequent tests. The support block 23 is set to abut against and support the test plate 17, increasing the distance between it and the lower side wall of the cavity 28. This allows the squeezed structural adhesive layer 30 to drip onto the cavity 28 at the same distance from the end, making it easier for staff to clean the squeezed structural adhesive layer 30. The insertion rod 15 is inserted into the slot 25 to achieve stacking, making it convenient to place in a centralized and static position. The chamfer on the slot 25 facilitates the insertion of the insertion rod 15.

[0035] Reference Figure 5-6The base plate 10 has a left and right open fitting cavity 27, which communicates with the cavity 28. The lower side wall of the fitting cavity 27 is lower than the lower side wall of the cavity 28. The test plate 17 is inserted into the fitting cavity 27 vertically. Both test plates 17 abut against the front and rear side walls of the fitting cavity 27. The upper end of the support block 23 is flush with the lower side wall of the fitting cavity 27, and the bottom test plate 17 abuts against the lower side wall of the fitting cavity 27. The fitting cavity 27 is located on both the left and right sides of the cavity 28 and has open fitting cavities. The positioning groove 24 and the fitting cavity 27 are provided with a thick plate 19. Positioning blocks 20 are fixed at both ends of the thick plate 19, and the positioning blocks 20 are vertically inserted into the positioning groove 24. Length plates 18 are provided at the adjacent ends of the two thick plates 19. The thick plates 19 have slots near the test plate 17. Protrusions 21 are fixed on the length plates 18, which are vertically inserted into the slots of the thick plates 19 and abut against the test plate 17. The length plates 18 have the same thickness as the thick plates 19. The front-to-back width of the sidewall of cavity 27 is the same as the front-to-back width of test plate 17. A structural adhesive layer 30 is applied to the adjacent ends of the two test plates 17. After inserting one test plate 17 into the fitting cavity 27 and abutting against the front, back, lower, and upper sidewalls of the fitting cavity 27, for example, before inserting the test plate 17 into the left fitting cavity 27, the thickness plate 19 is inserted vertically into the right positioning groove 24 via positioning blocks 20, so that the slot of the thickness plate 19 is close to the test plate 17. The length plate 18 is inserted into the slot of 9 from the top and bottom. The left and right ends of the length plate 18 are set between the fitting cavity 27 and the cavity 28, so that the length plate 18 abuts against the right end of the test plate 17. By changing the thickness of the length plate 18 and the thickness plate 19, and the left and right length of the length plate 18, the mutual contact area of ​​the two test plates 17 and the thickness of the structural adhesive layer 30 are adjusted. The connecting rod 12 is inserted into the insertion hole 22 from the top and bottom. The thickness of the structural adhesive layer 30 coated on the test plate 17 is slightly higher than the thickness of the thickness plate 19.

[0036] Reference Figure 7The pressure plate 11 is threadedly connected to the connector 16. A straight groove 26 is provided inside the guide slide 14. The connector 16 includes a threaded rod with a smaller radius and a rotating cap with a larger radius. The threaded rod abuts against the side wall of the straight groove 26, and the rotating cap abuts against the guide slide 14 for limiting the position. The connector 16 is fixedly connected to the front and rear ends of the pressure plate 11 by threads and abuts against the straight groove 26. The diameter of the threaded rod of the connector 16 is consistent with the groove spacing of the straight groove 26. The pressure plate 11 slides and rotates at the guide slide 14 through the connector 16 and the straight groove 26. After sliding to the uppermost end of the straight groove 26, the connector 16 rotates against the side wall of the straight groove 26, thereby flipping the pressure plate 11. After exposing the fitting cavity 27 and cavity 28 at the base plate 10, the test plate 17, length plate 18 and thickness plate 19 are placed in the fitting cavity 27. The flipped pressure plate 11 abuts against the support surface through the insertion rod 15. After the test plate 17, length plate 18 and thickness plate 19 are placed, the pressure plate 11 is flipped in the opposite direction, so that the pressure plate 11 rotates with the uppermost side of the straight groove 26 as the rotating part through the connector 16. Then, the pressure plate 11 moves closer to the base plate 10 through the upper and lower sliding cooperation of the straight groove 26 and the connector 16. After the connecting rod 12 is inserted into the insertion hole 22, the nut 13 is screwed into the connecting rod 12 to position and press the test plate 17, length plate 18 and thickness plate 19.

[0037] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A structural adhesive bonding sample preparation device, comprising a base plate (10) and a pressure plate (11), characterized in that: The base plate (10) has a left-right opening fitting cavity (27). Two test plates (17) are placed in the fitting cavity (27). There is an overlapping area between the two test plates (17), and a structural adhesive layer (30) is coated on them. A guide slide (14) is fixedly provided at the upper end of the base plate (10). A connector (16) is inserted into the guide slide (14). The connector (16) is threadedly connected to the pressure plate (11). A connecting rod (12) is fixedly provided on the base plate (10). An insertion hole (22) is provided on the pressure plate (11). The connecting rod (12) and the insertion hole (22) are connected. The base plate (10) is provided with two concave cavities (29) at the middle and front. The base plate (10) is provided with a cavity (28) that is open at the front and back. The two test plates (17) are provided with a length plate (18) and a thickness plate (19). The thickness plate (19) is used to adjust the thickness of the structural adhesive layer (30). The length plate (18) is used to adjust the size of the bonding area between the two test plates (17). The base plate (10) is provided with two concave cavities (29) distributed at the front and back. The concave cavities (29) are used to shorten the distance between the base plate (10) and the front and rear ends of the test plates (17).

2. The structural adhesive bonding sample preparation device according to claim 1, characterized in that: The fitting cavity (27) is located on both the left and right sides of the cavity (28) and is provided with positioning grooves (24). Positioning blocks (20) are fixed at both the front and rear ends of the thickness plate (19). The positioning blocks (20) are inserted into the positioning grooves (24) vertically. Length plates (18) are provided at the close ends of the two thickness plates (19). The thickness plate (19) is provided with a slot at the end close to the test plate (17). The length plate (18) is provided with a protrusion (21) that is inserted into the slot of the thickness plate (19) vertically and abuts against the test plate (17) horizontally. The length plate (18) and the thickness plate (19) have the same thickness. The thickness of the structural adhesive layer (30) coated on the test plate (17) is slightly higher than the thickness of the thickness plate (19).

3. The structural adhesive bonding sample preparation device according to claim 1, characterized in that: The upper end of the pressure plate (11) is fixed with a plug rod (15), and the bottom plate (10) is provided with a slot (25) that is open at the top and bottom. The plug rod (15) and the slot (25) are inserted and matched vertically, and the lower edge of the slot (25) is chamfered. The length of the plug rod (15) is greater than the depth of the slot (25).

4. The structural adhesive bonding sample preparation device according to claim 3, characterized in that: The height of the insert rod (15) is set as h1. The guide slide (14) is provided with a sliding groove. The distance between the sliding rod and the bottom end of the base plate (10) is set as h2. The lengths of h1 and h2 are equal. The pressure plate (11) is threadedly connected to the connector (16). The guide slide (14) is provided with a straight groove (26). The connector (16) includes a threaded rod with a smaller radius and a rotating cap with a larger radius. The threaded rod abuts against the side wall of the straight groove (26), and the rotating cap abuts against the guide slide (14) for limiting the position.

5. The structural adhesive bonding sample preparation device according to claim 1, characterized in that: A support block (23) is fixed on the bottom wall of the cavity (28). The upper end face of the support block (23) is set on the same side as the lower side wall of the fitting cavity (27). The support block (23) abuts against the test plate (17) at the bottom.

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