Dynamic shearing auxiliary test fixture

Abstract

The utility model relates to a dynamic shearing auxiliary testing jig, which belongs to the technical field of adhesive product testing devices, and comprises an upper clamp, an adhesive joint sample piece, a lower clamp and a position regulator, the center of the upper clamp and the center of the lower clamp are clamping center lines, the upper clamp is connected with a top connecting block of a tensile machine through a sleeve bolt, and the position regulator is connected with the upper clamp. The position regulator is connected with a base of the tensile machine through a sleeve bolt; the position adjuster comprises a main body, a sliding groove, a graduated scale, a sliding block and a clamping block, and the sliding block can slide in the sliding groove. According to the utility model, the position regulator is arranged, and the slide block on the position regulator can drive the lower clamp to move left and right, so that the gluing areas of the two test pieces are on the same straight line, thereby eliminating the phenomenon that the gluing areas are bent due to the thickness of the test pieces, accurately testing even gluing products with smaller dynamic shearing force, and ensuring the accuracy of test results.

Description

Technical Field

[0001] The utility model relates to a dynamic shear auxiliary testing jig, belonging to the technical field of adhesive product testing devices. Background Art

[0002] As the electronics industry continues to evolve towards sophistication, the requirements for dynamic shear performance in adhesive products are also increasing. Dynamic shear testing involves clamping a sample between upper and lower fixtures and stretching it in both directions using a tensile testing machine. The deformation of the sample under load is measured, allowing the material's mechanical properties to be calculated.

[0003] The method for making test specimens for the dynamic shear force of adhesive products generally involves preparing two rigid test specimens, applying a film or coating an adhesive to the bonding area at one end of one test specimen based on the bonding area to be tested, and then covering one end of the other test specimen with the film or adhesive. The two test specimens are stacked and bonded together to complete the production of a specimen. In existing fixtures, the centers of the upper and lower clamps that secure the test specimen are aligned on a vertical line. However, due to the significant thickness of the rigid test specimens themselves, the bonding areas of the two test specimens are bent, and the force center of the specimen and the clamping center are not aligned on a vertical line. When the test specimen is secured to the dynamic shear force instrument, the instrument is subjected to a certain amount of stress, which results in a certain degree of error in the test data. For testing adhesive products with large dynamic shear forces, the accuracy and reliability are high, but for testing adhesive products with smaller dynamic shear forces, there are large errors.

[0004] In order to simulate the dynamic shear force performance of adhesive products in actual applications, a dynamic shear force auxiliary fixture is needed that can eliminate the stress caused by the thickness of the test piece itself to accurately test the performance of adhesive products. Utility Model Content

[0005] The utility model aims to solve the deficiencies in the prior art and provides a dynamic shear auxiliary test fixture.

[0006] The utility model relates to a dynamic shear auxiliary test fixture. In order to solve the problem that conventional fixtures bring certain clamping stress due to the thickness of the test piece when clamping the sample, resulting in large errors in dynamic shear force testing, the fixture of the utility model can eliminate the clamping stress of the sample thickness when clamping the sample, thereby meeting the requirements for high test accuracy of adhesive products with relatively small dynamic shear force.

[0007] The technical solution of the utility model to solve the above technical problems is as follows:

[0008] A dynamic shear auxiliary test fixture, comprising an upper fixture, a bonding sample, a lower fixture, and a position adjuster. The center of the upper fixture and the center of the lower fixture form a clamping centerline. The upper fixture is connected to the top connecting block of the tensile testing machine via a sleeve pin, and the position adjuster is connected to the base of the tensile testing machine via a sleeve pin.

[0009] The upper end of the glued sample is connected to the upper clamp, and the lower end of the glued sample is connected to the lower clamp;

[0010] The position regulator includes a main body, a slide groove, a scale, a slider, and a clamping block. The slider can slide in the slide groove, the center of the scale is 0, and the slider is connected to the lower clamp through a sleeve pin.

[0011] Tensile testing machines can perform a variety of performance tests, and different tests require different test fixtures. The present invention uses a sleeve-and-pin connection for multiple connections, which is reliable and easy to operate. The sleeve-and-pin connection is achieved through a cylindrical sleeve and a pin. The cylindrical sleeve has a pin hole that matches the pin, and the pin's shape and size match the pin hole in the sleeve. The two components connected by the sleeve-and-pin have different sleeve diameters so they can nest with each other. The pin can be inserted into the sleeve, and the sleeve-and-pin connection is tightened by rotating the knob. It should be noted that the sleeve-and-pin in this application is a connection method, not the name of a specific component.

[0012] On the basis of the above technical solution, the present invention can also be improved as follows:

[0013] Furthermore, the top connecting block of the tensile machine, the upper clamp, the lower clamp, the slider, the position regulator, and the base of the tensile machine all include sleeves and pin holes.

[0014] Furthermore, the bonding sample is formed by bonding the test piece 1 and the test piece 2 together through the bonding area.

[0015] Furthermore, the bonding area is affixed with a glue film, double-sided tape, or coated with an adhesive.

[0016] Furthermore, the scale ruler has scale lines, and the 0 value on the scale lines increases sequentially to the left, and the 0 value increases sequentially to the right.

[0017] Furthermore, the slider is integrally formed and is provided with a sleeve, a pin hole, and a screw hole.

[0018] Furthermore, the sliding block is connected to the clamping block via screws.

[0019] Furthermore, two screw holes are provided at both ends of the clamping block.

[0020] Furthermore, the second screw hole does not penetrate the clamping block.

[0021] Furthermore, the sleeve has two or four symmetrically arranged pin holes.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The utility model provides a position regulator, and the slider on it can drive the lower clamp to move left and right, so that the adhesive areas of the two test pieces are in the same straight line, thereby eliminating the bending phenomenon of the adhesive area caused by the thickness of the test pieces. Even for adhesive products with small dynamic shear force, accurate testing can be achieved, ensuring the accuracy of the test results.

[0024] 2. The utility model sets the center of the scale to 0 value and places the 0 value on the clamping center line when debugging the position regulator, so as to facilitate accurate adjustment of the distance of the test piece thickness and eliminate the influence of the thickness of the test piece itself on the test.

[0025] 3. In the present invention, the top connecting block of the tensile machine and the upper fixture, the lower fixture and the slider of the position regulator, and the position regulator and the base of the tensile machine are all connected by means of sleeve pins, which is convenient for installation and disassembly.

[0026] 4. The sliding and fixing of the slider in the utility model are achieved by loosening and tightening the screws, which is easy to operate and helps improve the testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 : Overall schematic diagram of the dynamic shear auxiliary test fixture placed on the tensile machine;

[0028] Figure 2 : Schematic diagram of the position regulator connected to the base of the tensile machine;

[0029] Figure 3 : Side view of the position regulator after assembly;

[0030] Figure 4 : Disassembled diagram of the components of the position regulator;

[0031] Figure 5 : Schematic diagram of the bonded specimens.

[0032] In the figure, 1. Top connecting block of the tensile testing machine; 2. Upper clamp; 3. Glued sample; 4. Lower clamp; 5. Position adjuster; 6. Base of the tensile testing machine; 7. Sleeve; 8. Pin hole; 9. Pin; 10. Knob.

[0033] 31. Test piece 1; 32. Test piece 2; 33. Bonding area.

[0034] 51. Main body; 52. Slide; 53. Scale; 54. Slider; 55. Snap-in block; 56. Screw; 57. Screw hole 1; 58. Screw hole 2. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. The tensile machine used in this application was purchased from Guangdong Kejian Instrument Co., Ltd.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0037] Example

[0038] like Figure 1-5 As shown, a dynamic shear auxiliary test fixture includes an upper clamp 2, a glued sample 3, a lower clamp 4, and a position adjuster 5. The center of the upper clamp 2 and the center of the lower clamp 4 are the clamping center lines. The upper clamp 2 is connected to the top connecting block 1 of the tensile machine through a sleeve pin, and the position adjuster 5 is connected to the base 6 of the tensile machine through a sleeve pin; the top connecting block 1 of the tensile machine, the upper clamp 2, the lower clamp 4, the slider 54, the position adjuster 5, and the base 6 of the tensile machine all include a sleeve 7 with a pin hole, and the top connecting block 1 of the tensile machine and the upper clamp 2, the lower clamp 4 and the slider 54, the position adjuster 5 and the base 6 of the tensile machine are all connected by sleeve pins, which is reliable and easy to operate.

[0039] The upper end of the glued sample 3 is connected to the upper clamp 2, and the lower end of the glued sample 3 is connected to the lower clamp 4; the glued sample 3 is used to bond the test piece 1 31 and the test piece 2 32 through the glue area 33; in some embodiments, the glue area 33 is affixed with an adhesive film, in some embodiments, the glue area 33 is affixed with double-sided tape, and in some embodiments, the glue area 33 is coated with adhesive.

[0040] The position regulator 5 includes a main body 51, a slide groove 52, a scale 53, a slider 54, a clamping block 55, a screw 56, a screw hole 1 57, and a screw hole 2 58. The slider 54 can slide in the slide groove 52, and the center of the scale 53 is 0.

[0041] The scale 53 has graduated lines, with the value increasing from 0 to the left and from 0 to the right. The units of the numerical values ​​on the scale lines in the accompanying drawings are centimeters (cm), with each small grid representing 1 millimeter (mm). The slider 5 is integrally formed and is provided with a sleeve 7, a latch hole 8, and a screw hole 57. The slider 54 is connected to the clamping block 55 via screws 56. Screw holes 58 are provided at both ends of the clamping block 55, but do not penetrate the clamping block 55. The sleeve 7 has two or four symmetrically arranged latch holes 8.

[0042] Taking the dynamic shear force test of a film as an example, the implementation principle of a dynamic shear auxiliary test fixture in this application is as follows:

[0043] The first step is to prepare the bonding samples: take two SUS steel plates of the same size, 100mm long, 25.4mm wide, and 2mm thick, as test piece 1 31 and test piece 2 32, and attach a film with an area of ​​25.4mm long, 25.4mm wide, and 0.1mm thick to one end of test piece 1 31. Then, cover one end of test piece 2 32 on the above-mentioned film. The two test pieces are stacked in parallel and bonded together, and the bonding area is the bonding area 33.

[0044] The second step is to assemble and debug the position regulator 5: place the slider 54 at one end of the main body 51, place a clamping block 55 at this end, align the screw hole 1 57 with the screw hole 2 58, and pass a screw 56 from top to bottom through the screw hole 1 57 and the screw hole 2 58, so that the slider 54 and the clamping block 55 are connected together; slide the slider 54 along the slide groove 52 to the other end of the main body 51, and connect the slider 54 to the other clamping block 55 in the same way; then slide the center of the slider 54 to the scale line 0 value, and lock the screws 56 at both ends of the slider 54.

[0045] The third step is to assemble the dynamic shear auxiliary test fixture: connect the top connecting block 1 of the tensile machine with the upper clamp 2 through a sleeve pin, connect the lower clamp 4 with the slider 54 through a sleeve pin, connect the position regulator 5 with the base 6 of the tensile machine through a sleeve pin, and tighten the sleeve pin connection by rotating the knob 10.

[0046] The fourth step is to debug the position regulator 5 and connect the bonding sample 3: fine-tune the loose screw 56 to allow the slider 54 to slide, and slide the slider 54 to the right by a distance of 2 mm from the thickness of the test piece 2 32, and tighten the screw 56 to fix the position of the slider 54; the upper clamp 2 clamps the test piece 1 31, and the bonding area 32 is located on the right side of the test piece 1 31, and the lower clamp 4 clamps the test piece 2 32.

[0047] Step 5: Edit the test program and perform dynamic shear force test on the film.

[0048] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A dynamic shear auxiliary test fixture, characterized in that: The test fixture includes an upper fixture, a bonding sample, a lower fixture, and a position regulator. The center of the upper fixture and the center of the lower fixture are the clamping center lines. The upper fixture is connected to the top connecting block of the tensile machine through a sleeve pin, and the position regulator is connected to the base of the tensile machine through a sleeve pin. The upper end of the glued sample is connected to the upper clamp, and the lower end of the glued sample is connected to the lower clamp; The position regulator includes a main body, a slide groove, a scale, a slider, and a clamping block. The slider can slide in the slide groove, the center of the scale is 0, and the slider is connected to the lower clamp through a sleeve pin.

2. A dynamic shear auxiliary test fixture according to claim 1, characterized in that: The top connecting block of the tensile testing machine, the upper clamp, the lower clamp, the slider, the position regulator, and the base of the tensile testing machine all include sleeves and pin holes; the sleeve and pin connection is achieved through a cylindrical sleeve and a pin, and the cylindrical sleeve is provided with a pin hole that matches the pin, and the shape and size of the pin match the pin hole in the sleeve; the pin can be inserted into the sleeve, and the sleeve and pin connection is tightened by rotating the knob.

3. A dynamic shear auxiliary test fixture according to claim 1, characterized in that: The bonding sample is formed by bonding the test piece 1 and the test piece 2 together through the bonding area.

4. A dynamic shear auxiliary test fixture according to claim 3, characterized in that: The bonding area is pasted with a film, double-sided tape, or coated with adhesive.

5. The dynamic shear auxiliary test fixture according to claim 1, characterized in that: The scale ruler has scale lines, and the 0 value on the scale lines increases successively to the left, and the 0 value increases successively to the right.

6. The dynamic shear auxiliary test fixture according to claim 1, characterized in that: The slider is integrally formed and is provided with a sleeve, a pin hole and a screw hole.

7. A dynamic shear auxiliary test fixture according to any one of claims 1 to 6, characterized in that: The sliding block is connected to the clamping block via screws.

8. A dynamic shear auxiliary test fixture according to any one of claims 1 to 6, characterized in that: Two ends of the clamping block are provided with screw holes 2.

9. The dynamic shear auxiliary test fixture according to claim 8, characterized in that: The second screw hole does not penetrate the clamping block.

10. The dynamic shear auxiliary test fixture according to claim 2, characterized in that: The sleeve is provided with two or four pin holes which are symmetrically arranged.

Images