A peel test jig for adhesives

Abstract

This application relates to the field of adhesive testing apparatus technology, and more specifically, to a peel test fixture for adhesives. In the peel test fixture for adhesives provided in the embodiments of this application, a sliding guide rail assembly is fixedly installed on the top surface of the frame. This allows the clamping plate, which is fixedly connected to the slider, to be adjusted according to the actual thickness of the test substrate. The distance between the clamping plate and the upper fixture is adjusted so that the force applied by the fixture is parallel to the adhesive surface. Furthermore, multiple clamps are provided on the clamping plate to fix one of the substrate pieces to the clamping plate, preventing inaccurate data due to shaking during the test.

Description

Technical Field

[0001] This application relates to the field of adhesive testing apparatus, and more specifically, to a peel test fixture for adhesives. Background Technology

[0002] The adhesive peel test is an important test method for measuring the bond strength of adhesives. Its principle is to measure the bonding effect by evaluating the force required for the materials to separate. Specifically, an external force perpendicular to the bonding surface is applied, causing the substrate to separate at a fixed angle. The peel force required for this process is then measured, and this value directly reflects the degree of adhesion between the adhesive and the substrate.

[0003] In related technologies, tensile testing fixtures are typically used to perform peel tests on adhesives. The working principle involves clamping the free ends of two substrates with adhesive between them using tensile clamps at the top and bottom. A hydraulic cylinder controls the movement of the upper tensile clamp, thus completing the peel test.

[0004] However, due to structural limitations, traditional tensile testing fixtures typically use upper and lower clamps to hold the two ends of the bonded substrate separately, and perform shear force tests by pulling on one side. But different test substrates have different thicknesses, which means the spacing between the upper and lower clamps cannot be adjusted according to the thickness of the test substrate, thus affecting the actual measurement results. Utility Model Content

[0005] In view of this, embodiments of this application provide a peel test fixture for adhesives.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions: A peel test fixture for adhesives, comprising: A frame, wherein at least one base is fixedly mounted on the top surface of the frame; A pulling assembly, the pulling assembly including hydraulic cylinders that correspond one-to-one with the base and are fixedly installed on the top of the base, the piston rod end of the hydraulic cylinder is fixedly connected to a clamping fixture, the clamping fixture is located above the frame and is used to clamp the free end of the second substrate; A sliding guide rail assembly includes a slide rail fixedly installed on the top surface of the frame and a slider slidably connected thereto. The slider is located below the fixture and can move closer to or further away from the fixture along the slide rail. Multiple vertical clamping fixtures are provided, each of which includes a clamping plate vertically disposed on the top of the slider, and multiple pliers are disposed on the surface of the clamping plate, the pliers being used to clamp the first substrate onto the surface of the clamping plate.

[0007] In some possible implementations, the bottom of the clamping plate and the top of the slider are rotatably connected by a hinge arm, and the side of the slider is provided with a pin hole for fixing the rotational position of the clamping plate, and a pin is adapted to be inserted into the pin hole; the pin holes are distributed along the rotational trajectory of the clamping plate.

[0008] In some possible implementations, both the clamp and the hinge arm are located at the top end of the slider.

[0009] In some possible implementations, a pad is provided on the top of the slider, and when the clamping plate is rotated to a horizontal position, its bottom surface is in contact with the pad.

[0010] In some possible implementations, the slider side is provided with two pin holes, which are located on the line connecting the vertical and horizontal directions respectively, and their axes are perpendicular to each other.

[0011] In some possible implementations, the base, the hydraulic cylinder, the sliding guide rail assembly, and the vertical clamping fixture are all multiple and are equidistantly distributed along the length of the frame, with each component corresponding to an independent test unit.

[0012] The adhesive peel test fixture provided in this application has at least the following beneficial effects: In the adhesive peel test fixture provided in this application embodiment, a sliding guide rail assembly is fixedly installed on the top surface of the frame. This allows the clamping plate, which is fixedly connected to the slider, to be adjusted according to the actual thickness of the test substrate. The distance between the clamping plate and the upper fixture is adjusted so that the force applied by the fixture is parallel to the adhesive surface. Furthermore, multiple clamps are provided on the clamping plate to fix one of the substrate pieces to the clamping plate, preventing inaccurate data due to shaking during the test. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the adhesive peel test fixture provided in the embodiments of this application; Figure 2 for Figure 1 A schematic diagram of the side structure; Figure 3 for Figure 1Assembly diagram of the sliding guide rail assembly and the vertical clamping fixture; Figure 4 for Figure 1 A schematic diagram showing the state under shear force testing. Figure 5 This is a schematic diagram of the structure of an adhesive peel test fixture provided in another embodiment of this application; Figure 6 for Figure 5 Assembly diagram of the sliding guide rail assembly and the vertical clamping fixture; Figure 7 for Figure 5 A schematic diagram showing the state of the adhesive force test.

[0015] In the picture: 100. Frame; 200. Base; 300. Fixture; 400. Hydraulic cylinder; 500. Slide rail; 600. Slider; 610. Pin hole; 620. Pin body; 630. Pad; 700. Clamping plate; 800. Pliers; 900. Articulated arm. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "back" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] like Figures 1-4As shown in the embodiment of this application, the adhesive peel test fixture includes a frame 100, a pulling assembly, a sliding guide rail assembly, and multiple vertical clamping fixtures. The frame 100 is the main load-bearing structure of the test fixture. The frame 100 is welded from 304 stainless steel square tubing and has an overall square frame structure. Multiple bases 200 are fixedly installed on the top of the frame 100. These bases 200 are equidistantly distributed along the length of the frame 100, and each base 200 is a vertically extending cuboid steel block, primarily used to support the pulling assembly.

[0021] The pulling assembly is located on top of the base 200 and in the area above the frame 100. Specifically, the pulling assembly includes multiple hydraulic cylinders 400 that correspond one-to-one with the base 200. The hydraulic cylinders 400 are vertically fixed to the top of the base 200 by bolts, and the piston rod ends are fixedly connected to a clamping fixture 300. The clamping fixture 300 can be a special clamp for tensile testing. The contact surfaces of the two clamping blocks of the clamping fixture 300 are provided with anti-slip textures to enhance the clamping force on the substrate.

[0022] In this embodiment, a sliding guide rail assembly is fixedly installed on the top surface of the frame 100 corresponding to the lower part of each base 200. Each sliding guide rail assembly includes a slide rail 500 and a slider 600 slidably connected to it. The slide rail 500 has an I-shaped structure, and its length matches the lateral dimension of the base 200. The slider 600 can slide along the extension direction of the slide rail 500, and move closer to or further away from the fixture 300 above it.

[0023] Continue as Figures 1-4 As shown, each vertical clamping fixture includes a clamping plate 700 and a vise 800 mounted on the clamping plate 700. The clamping plate 700 is a steel plate of a certain thickness and is vertically mounted on the top of the slider 600. A first substrate is fixedly mounted on the side of the clamping plate 700 via the vise 800. The clamping range of the vise 800 can be adjusted to accommodate first substrates of different thicknesses. The surface of the first substrate is coated with the adhesive to be tested. The first substrate is bonded to a second substrate through this adhesive. One end of the second substrate is clamped and fixed by the clamping fixture 300.

[0024] In practical use, the first substrate is fixed to the clamping plate 700 using pliers 800, and adhesive is applied to the surface of the first substrate to bond the second substrate. The free end of the second substrate is fixed and clamped by the fixture 300. The position of the slider 600 is adjusted so that both the first and second substrates are in the vertical direction, and then the hydraulic cylinder 400 is driven to move upward to achieve the test treatment of the adhesive shear force.

[0025] In the adhesive peel test fixture provided in this application embodiment, a sliding guide rail assembly is fixedly installed on the top surface of the frame 100. This allows the clamping plate 700, which is fixedly connected to the slider 600, to be adjusted according to the actual thickness of the test substrate. The distance between the clamping plate 700 and the upper fixture 300 is adjusted so that the force applied by the fixture 300 is parallel to the adhesive surface. Furthermore, multiple vises 800 are provided on the clamping plate 700 to fix one of the substrate pieces to the clamping plate 700, preventing inaccurate data due to shaking during the test.

[0026] In some embodiments, such as Figures 5-7 As shown, the bottom of the clamping plate 700 and the top of the slider 600 are rotatably connected by a hinge arm 900. The side of the slider 600 has pin holes 610 for fixing the rotational position of the clamping plate 700. A pin 620 is fitted into the pin holes 610, and the pin holes 610 are distributed along the rotational trajectory of the clamping plate 700. Furthermore, Both the clamping plate 700 and the hinge arm 900 are located at the top end of the slider 600. Preferably, the slider 600 has two pin holes 610 on its side, which are located on the line connecting the vertical and horizontal directions, respectively, and their axes are perpendicular to each other.

[0027] By employing the aforementioned structural design, the clamping plate 700 can be rotated to a horizontal position, simulating a vertical peeling scenario with the substrate fixed to the clamping plate 700, thereby measuring the vertical peeling force of the adhesive. In this way, the same device can be used to simulate peeling scenarios under different actual working conditions, thus testing and obtaining data under different peeling scenarios, solving the problem of data bias caused by traditional device testing.

[0028] Preferably, a pad 630 is provided on the top of the slider 600, and when the clamping plate 700 rotates to the horizontal position, its bottom surface is in contact with the pad 630.

[0029] In some embodiments, the number of base 200, hydraulic cylinder 400, sliding guide rail assembly, and vertical clamping fixture are all multiple and are equidistantly distributed along the length of frame 100, with each component corresponding to form an independent test unit. In this way, multiple sets of parallel tests can be performed simultaneously (such as testing the same adhesive on different substrates, comparing different adhesives on the same substrate, etc.), which greatly shortens the testing cycle and improves testing efficiency.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A peel test fixture for adhesives, characterized in that, include: A frame, wherein at least one base is fixedly mounted on the top surface of the frame; A pulling assembly, the pulling assembly including hydraulic cylinders that correspond one-to-one with the base and are fixedly installed on the top of the base, the piston rod end of the hydraulic cylinder is fixedly connected to a clamping fixture, the clamping fixture is located above the frame and is used to clamp the free end of the second substrate; A sliding guide rail assembly includes a slide rail fixedly installed on the top surface of the frame and a slider slidably connected thereto. The slider is located below the fixture and can move closer to or further away from the fixture along the slide rail. Multiple vertical clamping fixtures are provided, each of which includes a clamping plate vertically disposed on the top of the slider, and multiple pliers are disposed on the surface of the clamping plate, the pliers being used to clamp the first substrate onto the surface of the clamping plate.

2. The adhesive peel test fixture according to claim 1, characterized in that: The bottom of the clamping plate and the top of the slider are rotatably connected by a hinge arm. The side of the slider is provided with a pin hole for fixing the rotation position of the clamping plate, and a pin is adapted to be inserted into the pin hole. The pin holes are distributed along the rotation trajectory of the clamping plate.

3. The adhesive peel test fixture according to claim 2, characterized in that: Both the clamping plate and the hinge arm are located at the top end of the slider.

4. The adhesive peel test fixture according to claim 3, characterized in that: A pad is provided on the top of the slider, and when the clamping plate is rotated to a horizontal position, its bottom surface is in contact with the pad.

5. The adhesive peel test fixture according to claim 2, characterized in that: The slider has two pin holes on its side, which are located on the line connecting the vertical and horizontal directions, respectively, and their axes are perpendicular to each other.

6. The adhesive peel test fixture according to claim 1, characterized in that: The base, the hydraulic cylinder, the sliding guide rail assembly, and the vertical clamping fixture are all multiple and are equidistantly distributed along the length of the frame, with each component corresponding to form an independent test unit.

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