Clamp for testing shearing performance of foam core material
The foam core material shear performance testing fixture addresses the challenge of edge alignment during bonding by using a sliding track and clamping mechanism, improving the efficiency and accuracy of the bonding process.
Patent Information
- Application Number
- CN202421377117.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-06-17
AI Technical Summary
In the foam core shear performance test, the specimen and the edges of the test fixture are difficult to align, resulting in complex bonding process and inefficient efficiency.
A foam core shear performance test fixture is designed, including a base, a positioning plate and a clamping plate. The combined structure of the slide chute, a slide rail and a spring is used to achieve accurate positioning and alignment of the specimen, combined with the threaded connection of the rotating plate and the pressurized plate to ensure that the specimen is aligned with the edge of the positioning plate.
The alignment process between the specimen and fixture is simplified, the bonding speed and efficiency are improved, and the accuracy and representativeness of the test data are ensured.
Smart Images
Figure CN223107414U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foaming material production, and particularly relates to a test fixture for testing the shear performance of a foam core material. Background Art
[0002] The sandwich panel structure of the foam core material has characteristics such as light weight, high stiffness, corrosion resistance, and electromagnetic shielding, and has been widely used in fields such as aerospace at present. During the production process, it is necessary to test the shear resistance performance of the foam core material to ensure that the produced foam core material meets the technical requirements.
[0003] According to the utility model application with the publication number: CN212321230U and the publication date of January 8, 2021, a specimen for testing the shear performance of a foam core material is disclosed, which includes a foam core material body, and an upper skin layer and a lower skin layer adhesively cured on the upper and lower surfaces of the foam core material body; wherein, upper and lower cutouts are respectively formed on the upper and lower surfaces of the specimen along the thickness direction of the specimen, the upper cutout and the lower cutout are located on both sides of the center of the specimen and have the same length from the center of the specimen; the upper cutout and the lower cutout penetrate through the entire specimen along the width direction of the specimen. Its main technical effect is: by processing the upper cutout and the lower cutout on the opposite sides of the upper and lower surfaces of the specimen to form a shear deformation zone, thereby realizing the shear performance test of the foam core material sandwich panel. The specimen formed by the utility model can be used to test the shear performance by using the standard plate specimen tensile fixture of a universal testing machine, without the need to add additional fixtures, the operation is simpler, and the situation of the specimen separating from the fixture can be reduced during the whole test process, ensuring the validity of the test data, improving the test efficiency, and the size limitations of the upper skin layer, the lower skin layer, the upper cutout, and the lower cutout make the formed specimen more representative, and the test data obtained can better reflect the shear performance of the foam core material sandwich panel. This standard is generally applicable to foam core material sandwich panels of different models and structures, providing a reliable reference basis for the production of specimens of foam core material sandwich panels in the industry.
[0004] During the shear performance test of the foam core material, it is necessary to bond the specimen and the test fixture for convenient testing. Since the specimen is relatively long, it is difficult to ensure that the edge of the specimen matches the edge of the test fixture during the bonding process, and it is necessary to repeatedly align the edges for bonding. Therefore, a test fixture for testing the shear performance of a foam core material is proposed, aiming to solve the problem that it is difficult to ensure that the edge of the specimen matches the edge of the test fixture during the specimen bonding process and it is necessary to repeatedly align the edges for bonding. Content of the Utility Model
[0005] The purpose of the utility model is to provide a test fixture for testing the shear performance of a foam core material, aiming to solve the problem that it is difficult to ensure that the edge of the specimen matches the edge of the test fixture during the specimen bonding process and it is necessary to repeatedly align the edges for bonding.
[0006] To achieve the above object, the present utility model provides the following technical solutions:
[0007] A foam core shear performance test fixture, comprising a base and a positioning plate. A positioning seat is fixedly installed on the outer wall of one side of the base. A slide rail is arranged inside the positioning seat. A chute is formed on the outer wall of one side of the positioning plate. The positioning plate is slidably connected to the slide rail through the chute. Clamping plates are symmetrically and slidably arranged inside the positioning seat. A first spring is arranged between the clamping plate and the positioning seat. The clamping plate is driven by the first spring to keep abutting against the positioning plate.
[0008] Preferably, an inclined surface is arranged on the outer wall of one side of the clamping plate.
[0009] Preferably, an adapter seat is fixedly installed on the outer wall of one side of the base. A rotating plate is rotatably connected inside the adapter seat. A threaded sleeve is rotatably arranged on the outer wall of one side of the rotating plate. A pressing plate is slidably connected to the rotating plate. A threaded rod is fixedly installed on the outer wall of one side of the pressing plate. The threaded rod penetrates and extends to the outer wall of the rotating plate. The threaded rod is threadedly connected to the threaded sleeve.
[0010] Preferably, sliding seats are symmetrically arranged on the outer wall of one side of the base. Bolts are slidably connected to the sliding seats.
[0011] In the above technical solution, a foam core shear performance test fixture provided by the present utility model has the following beneficial effects:
[0012] In this utility model, the positioning plate can be slidably connected to the slide rail on the positioning seat through the chute. The clamping plates symmetrically arranged inside the positioning seat can position the specimen and the positioning plate. The first spring arranged between the clamping plate and the positioning seat drives the clamping plate to move towards the positioning plate, so that the specimen is aligned with the edge of the positioning seat, ensuring the bonding effect between the specimen and the positioning plate, reducing the manual alignment workload, and improving the bonding speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.
[0014] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present utility model;
[0015] Figure 2 It is a schematic diagram of the opened structure of the rotating plate provided by an embodiment of the present utility model;
[0016] Figure 3 A schematic diagram of the moving structure of the pressure plate provided in an embodiment of the utility model.
[0017] Description of reference numerals:
[0018] 1. Base; 11. Positioning seat; 12. Slide rail; 13. Clamping plate; 131. Inclined surface; 132. Sliding rod; 14. First spring; 15. Adapter seat; 16. Rotating plate; 17. Threaded sleeve; 18. Pressure plate; 181. Guide rod; 182. Second spring; 19. Threaded rod; 2. Positioning plate; 3. Sliding seat; 4. Plug. DETAILED DESCRIPTION
[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0020] See also Figure 1 —3. A foam core material shear performance test fixture comprises a base 1 and a positioning plate 2, a positioning seat 11 is fixedly mounted on the outer wall on one side of the base 1, a slide rail 12 is arranged inside the positioning seat 11, a slide groove is opened on the outer wall on one side of the positioning plate 2, the positioning plate 2 is slidably connected to the slide rail 12 through the slide groove, a clamping plate 13 is symmetrically slidably arranged inside the positioning seat 11, a first spring 14 is arranged between the clamping plate 13 and the positioning seat 11, and the clamping plate 13 is driven by the first spring 14 to maintain contact with the positioning plate 2.
[0021] Furthermore, the positioning plate 2 is connected to the positioning seat 11 through the sliding groove and the sliding rail 12, which can achieve a more stable sliding connection and effectively reduce the shaking of the positioning plate 2 during the sliding process.
[0022] In addition, in order to better adapt to foam core materials of different sizes, the clamping plate 13 is slidably connected to the positioning seat 11, such as Figure 3 As shown, a sliding rod 132 is provided on the outer wall of the clamping plate 13, and the clamping plate 13 is slidably connected to the positioning seat 11 through the sliding rod 132. A first spring 14 is provided between the inner wall on one side of the positioning seat 11 and the outer wall on one side of the clamping plate 13. Specifically, the first spring 14 is a compression spring, and the first spring 14 is sleeved on the outside of the sliding rod 132. The first spring 14 is elastically driven to drive the clamping plate 13 to move away from the inner wall of the positioning seat 11, so that the side of the positioning plate 2 and the sample can be positioned, so that the side of the sample is aligned with the side of the positioning plate 2. Preferably, the positioning seat 11 is in a "U" shape as a whole, and the "U"-shaped positioning seat 11 can position the positioning plate 2 and the end of the sample.
[0023] In this utility model, the positioning plate 2 can be slidably connected to the slide rail 12 on the positioning seat 11 through a chute. The clamping plates 13 symmetrically arranged inside the positioning seat 11 can position the specimen and the positioning plate 2. The first spring 14 arranged between the clamping plates 13 and the positioning seat 11 drives the clamping plates 13 to move towards the positioning plate 2, so that the specimen is aligned with the edge of the positioning seat 11, ensuring the bonding effect between the specimen and the positioning plate 2, reducing the manual alignment workload, and improving the bonding speed.
[0024] As an embodiment provided by this utility model, as Figure 3 shown, an inclined surface 131 is provided on the outer wall of one side of the clamping plate 13. The inclined surface 131 can provide a certain guiding function. During the bonding process of the specimen and the positioning plate 2, the two sides of the specimen can be guided, causing the specimen to move towards the middle to ensure that the edges of the specimen and the positioning plate 2 can be aligned.
[0025] As an embodiment provided by this utility model, as Figure 1 shown, a transfer seat 15 is fixedly installed on the outer wall of one side of the base 1. A rotating plate 16 is rotatably connected to the transfer seat 15 through a rotating shaft. A threaded sleeve 17 is rotatably arranged on the outer wall of one side of the rotating plate 16. A pressing plate 18 is slidably connected to the rotating plate 16. Further, guiding rods 181 are symmetrically installed on the outer wall of the pressing plate 18. The pressing plate 18 is slidably connected to the rotating plate 16 through the guiding rods 181. A threaded rod 19 is fixedly installed on the outer wall of one side of the pressing plate 18. The threaded rod 19 penetrates and extends to the outer wall of the rotating plate 16. The threaded rod 19 is threadedly connected to the threaded sleeve 17. A second spring 182 is arranged between the rotating plate 16 and the pressing plate 18. The second spring 182 is sleeved on the outer wall of the guiding rod 181 to ensure the pressing pressure at both ends of the pressing plate 18.
[0026] As Figure 3 shown, sliding seats 3 are symmetrically arranged on the outer wall of one side of the base 1. As Figure 2 shown, a dovetail groove is formed at the top of the sliding seat 3. A bolt 4 is slidably connected to the sliding seat 3. The shape of the bolt 4 is adapted to the dovetail groove. The bolt 4 is slidably connected to the dovetail groove. The bolt 4 can be limited by the dovetail groove, preventing the rotating plate 16 from loosening during the pressing process and improving the pressing effect.
[0027] The first spring 14 and the second spring 182 mentioned in this article have elastic coefficients that meet the technical requirements of the technical solution of this utility model.
[0028] Those skilled in the art can understand that other similar connection methods can also implement this utility model. For example, methods such as welding, bonding, or screwing.
[0029] Only some exemplary embodiments of the present utility model have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the above-mentioned drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.
Claims
1. A foam core shear performance test fixture, comprising a base (1) and a positioning plate (2), characterized in that, A positioning seat (11) is fixedly mounted on the outer wall of one side of the base (1), a slide rail (12) is arranged inside the positioning seat (11), a slide groove is opened on the outer wall of one side of the positioning plate (2), the positioning plate (2) is slidably connected to the slide rail (12) through the slide groove, a clamping plate (13) is symmetrically slidably arranged inside the positioning seat (11), a first spring (14) is arranged between the clamping plate (13) and the positioning seat (11), and the clamping plate (13) is driven by the first spring (14) to maintain contact with the positioning plate (2).
2. The foam core shear performance test fixture according to claim 1, characterized in that, An inclined surface (131) is provided on the outer wall of one side of the clamping plate (13).
3. The foam core shear performance test fixture according to claim 1, characterized in that, An adapter seat (15) is fixedly mounted on the outer wall of one side of the base (1), a rotating plate (16) is rotatably connected inside the adapter seat (15), a threaded sleeve (17) is rotatably arranged on the outer wall of one side of the rotating plate (16), a pressure plate (18) is slidably connected to the rotating plate (16), a threaded rod (19) is fixedly mounted on the outer wall of one side of the pressure plate (18), the threaded rod (19) penetrates and extends to the outer wall of the rotating plate (16), and the threaded rod (19) maintains a threaded connection with the threaded sleeve (17).
4. A foam core shear performance test fixture according to claim 1, characterized in that, A sliding seat (3) is symmetrically arranged on the outer wall of one side of the base (1), and a plug (4) is slidably connected to the sliding seat (3).