Tensile test fixture suite
By combining welding fixtures and testing jigs, the problems of deviation from the center line and deformation in the testing of conductive pins were solved, enabling accurate testing of the welding strength of conductive pins and improving the reproducibility and accuracy of the test.
Patent Information
- Application Number
- CN202422966145.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In traditional tensile testing, the deviation of the conductive needle post from the center line and the deformation of the copper wire lead to large deviations in test values and poor reproducibility.
A combination of welding fixture and test fixture is used. The conductive pins are welded in a straight line using the welding fixture, and the mold is coated with limiting grooves and solder paste to ensure uniform welding. The conductive pins are fixed and stretched using the test fixture for accurate testing.
It enables accurate testing of the welding strength of conductive pin posts, improving the reproducibility and accuracy of test values.
Smart Images
Figure CN223581592U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of tensile testing equipment, and in particular relates to a tensile testing fixture kit. Background Technology
[0002] Conductive pins in electronic products typically require tensile testing to assess their soldering strength. Traditionally, this involves soldering copper wire for the test onto the component, then clamping the wire in a tensile testing machine. However, variations in soldering techniques can cause the pin and wire to deviate from their centerline. Furthermore, the elasticity of the copper wire and its deformation within the clamp contribute to significant deviations in the tensile test results, leading to poor reproducibility.
[0003] Therefore, the aforementioned technical deficiencies urgently need to be addressed. Utility Model Content
[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a tensile testing fixture kit, which aims to make the welding part of the two conductive needles to be tested for tensile stress uniform, so that the tensile test value can truly and accurately reflect the welding strength between the two conductive needles.
[0005] The technical solution adopted by this application to solve the technical problem is as follows: a tensile testing fixture kit, comprising:
[0006] A welding fixture is provided with at least one first limiting groove and at least one second limiting groove. The first limiting groove and the second limiting groove extend along the same straight line direction. The first limiting groove and the second limiting groove are respectively used to place two conductive pins to be welded. A welding groove is provided between the first limiting groove and the second limiting groove. A solder paste application mold is detachably connected to the welding groove. The solder paste application mold is provided with at least one solder paste application through hole, which is located between the first limiting groove and the second limiting groove.
[0007] And two test fixtures, which are used to fix and stretch the two conductive pins welded together.
[0008] In this embodiment, the first limiting groove and the second limiting groove both penetrate the side wall of the welding fixture.
[0009] In this embodiment, the welding fixture is further configured with a plurality of first limiting grooves and a plurality of second limiting grooves, and the solder paste application mold is configured with a plurality of solder paste application through holes. The plurality of first limiting grooves are arranged on the welding fixture, and the plurality of second limiting grooves are arranged on the welding fixture, with the plurality of first limiting grooves and the plurality of second limiting grooves being arranged in a one-to-one correspondence.
[0010] In this embodiment, the inner diameter of several first limiting grooves decreases sequentially; the inner diameter of several second limiting grooves decreases sequentially; and the diameter of several solder paste-coated through holes decreases sequentially.
[0011] In this embodiment, the welding groove, the first limiting groove, and the second limiting groove are of the same depth.
[0012] In this embodiment, the solder paste application mold is further configured to match the soldering groove.
[0013] In this embodiment, the soldering groove extends through the side wall of the soldering fixture on one side. The solder paste application mold includes a mold section and a pick-up tool. The pick-up tool is located at one end of the mold section, extends along the length of the soldering groove, and extends through the side wall of the soldering fixture.
[0014] In this embodiment, the welding fixture is further configured to have a size mark, which is located on the welding fixture near at least one of the first limiting groove and the second limiting groove.
[0015] In this embodiment, one end of the test fixture is provided with a V-shaped groove, which is used to fasten the V-shaped end of the conductive needle column receiving the tensile test. The end of the test fixture opposite to the V-shaped groove is provided with a clamping part, which is used to clamp the chuck of the tensile testing machine.
[0016] Compared with existing technologies, this application provides a tensile testing fixture kit. This invention first welds two conductive pins to be tested along a standard straight line using a welding fixture, ensuring uniform stress on the welded joints. Then, two testing clamps hook the two ends of the welded conductive pins respectively. This allows the tensile test value to accurately reflect the weld strength between the two conductive pins. Attached Figure Description
[0017] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of the welding fixture of a tensile testing fixture kit provided in this embodiment;
[0019] Figure 2 This is an exploded view of the welding fixture of a tensile testing fixture kit provided in this embodiment;
[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;
[0021] Figure 4 This is a schematic diagram of the structure of the welding fixture for welding conductive pins in a tensile testing fixture kit provided in this embodiment;
[0022] Figure 5 This is a schematic diagram of the structure of a test fixture of a tensile testing jig kit provided in this embodiment.
[0023] In the figure: 1. Welding fixture; 11. First limiting groove; 12. Second limiting groove; 13. Welding groove; 14. Solder paste application mold; 141. Mold section; 1411. Solder paste application through hole; 142. Gripping tool; 15. Dimension marking; 2. Test fixture; 21. V-groove; 22. Clamping part; 3. Conductive pin post. Detailed Implementation
[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0025] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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 on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0027] Furthermore, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.
[0028] This utility model provides, for example Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a tensile testing fixture kit is used to weld two conductive pins 3 to be tested for tensile strength along a standard straight line, ensuring uniform stress on the welded parts of the two conductive pins 3. Then, two test clamps 2 are used to hook the two ends of the welded conductive pins 3 respectively, and a tensile test is performed on the welded conductive pins 3 to test the welding strength of the conductive pins 3. The main structure of this utility model includes: a welding fixture 1 and two test clamps 2. The welding fixture 1 is used to weld the two conductive pins 3 to be tested for tensile strength along a standard straight line; the two test clamps 2 are used to hook the two ends of the welded conductive pins 3 respectively. The welding fixture 1 has at least one first limiting groove 11 and at least one second limiting groove 12. The first limiting groove 11 and the second limiting groove 12 extend along the same straight line direction. The first limiting groove 11 and the second limiting groove 12 are used to place two conductive pins 3 to be welded. A welding groove 13 is provided between the first limiting groove 11 and the second limiting groove 12. The welding groove 13 is detachably connected to a solder paste application mold 14. The solder paste application mold 14 has at least one solder paste application through hole 1411, which is located between the first limiting groove 11 and the second limiting groove 12. Two test fixtures 2 are used to fix and stretch the two conductive pins 3 welded together.
[0029] It should be noted that traditional tensile testing of this type of part usually requires soldering copper wire for the tensile test onto the part before clamping the wire in a fixture on a tensile testing machine. However, different soldering techniques used by different operators can cause the pin and wire to deviate from the centerline. Additionally, the elasticity of the copper wire and the deformation it undergoes in the fixture can also contribute to this. This often results in large deviations in the tensile test values, leading to poor reproducibility.
[0030] This invention first uses a welding fixture 1 to weld two conductive needle posts 3 to be tested for tensile strength along a standard straight line, ensuring that the welded joints of the two conductive needle posts 3 are subjected to uniform stress. Then, two test clamps 2 are used to hook the two ends of the welded conductive needle posts 3 respectively. This allows the tensile test value to accurately reflect the weld strength between the two conductive needle posts 3.
[0031] Specifically, in welding two conductive pins 3, the present invention first assembles a solder paste application mold 14 onto a welding groove 13, and applies solder paste to the solder paste application through-holes 1411 on the solder paste application mold 14. Then, the solder paste application mold 14 and welding fixture 1 are used to accurately apply the solder paste to the preset welding area. Finally, the two conductive pins 3 to be tested for tensile strength are placed on the first limiting groove 11 and the second limiting groove 12, respectively. Simultaneously, the two ends of the two conductive pins 3 to be tested for tensile strength are placed in the preset welding area for welding. This allows the two conductive pins 3 to be tested for tensile strength to be welded together along a standard straight line, ensuring uniform stress at the welding points.
[0032] Furthermore, such as Figure 2 , Figure 3 As shown, both the first limiting groove 11 and the second limiting groove 12 penetrate the side wall of the welding fixture 1. This allows the two conductive pins 3 to be stretched for testing to extend along the first limiting groove 11 and the second limiting groove 12, respectively.
[0033] Furthermore, such as Figure 1 , Figure 2 As shown, the welding fixture 1 has several first limiting grooves 11 and several second limiting grooves 12, and the solder paste application mold 14 has several solder paste application through holes 1411. The several first limiting grooves 11 are arranged on the welding fixture 1, and the several second limiting grooves 12 are arranged on the welding fixture 1. The several first limiting grooves 11 and the several second limiting grooves 12 are arranged in a one-to-one correspondence.
[0034] It is understandable that different sized limiting grooves (first limiting groove 11 and second limiting groove 12) can accommodate conductive needle posts 3 of different thicknesses to be tested. This allows the same welding fixture 1 to be adapted to weld conductive needle posts 3 of various diameters.
[0035] In other embodiments, the same welding fixture 1 may have several first limiting grooves 11 and several second limiting grooves 12 of the same size. Furthermore, the several first limiting grooves 11 and the several second limiting grooves 12 of the same size are arranged in an orderly manner. This facilitates the simultaneous welding of multiple pairs of conductive needle posts 3 of the same diameter by the operator, and allows for repeated tensile tests on the same conductive needle post 3.
[0036] Furthermore, such as Figure 1 , Figure 2 As shown, the inner diameter of several first limiting grooves 11 decreases sequentially; the inner diameter of several second limiting grooves 12 decreases sequentially; and the diameter of several solder paste application through holes 1411 decreases sequentially.
[0037] Furthermore, such as Figure 2 , Figure 3 As shown, the welding groove 13, the first limiting groove 11, and the second limiting groove 12 have the same depth. It can be understood that configuring the welding groove 13, the first limiting groove 11, and the second limiting groove 12 to have the same depth allows the welding ends (located in the welding groove 13) of the two conductive pins 3 placed in the first limiting groove 11 and the second limiting groove 12 respectively to be supported by the bottom of the welding groove 13. This ensures that the two conductive pins 3 always remain in the same straight direction. It also ensures that the welding parts of the two conductive pins 3 to be tested under tensile stress are subjected to uniform force.
[0038] Furthermore, such as Figure 1 , Figure 2 As shown, the solder paste application mold 14 matches the soldering groove 13, allowing for precise positioning of the solder paste application through-hole 1411 on the solder paste application mold 14.
[0039] Furthermore, such as Figure 2 , Figure 3 As shown, one side of the soldering groove 13 penetrates the side wall of the soldering fixture 1. The solder paste application mold 14 includes a mold section 141 and a lifting means 142. The lifting means 142 is disposed at one end of the mold section 141 and extends along the length of the soldering groove 13, penetrating the side wall of the soldering fixture 1. The lifting means 142 extends beyond the side wall of the soldering fixture 1, allowing for easy access by the operator's fingers and facilitating the separation of the soldering fixture 1 and the solder paste application mold 14.
[0040] Furthermore, such as Figure 2 , Figure 4As shown, the welding fixture 1 is provided with size markings 15 to facilitate workers' understanding of the dimensions of different limiting grooves (first limiting groove 11 and second limiting groove 12) to accommodate conductive pins 3 of different diameters to be tested. The size markings 15 are located on the welding fixture 1 near at least one of the first limiting groove 11 and the second limiting groove 12.
[0041] Furthermore, such as Figure 5 As shown, one end of the test fixture 2 is provided with a V-shaped groove 21, which is used to fasten the V-shaped end of the conductive needle post 3 for receiving tensile testing. The end of the test fixture 2 opposite to the V-shaped groove 21 is provided with a clamping part 22, which is used to clamp the chuck of the tensile testing machine.
[0042] In summary, this application provides a tensile testing fixture kit. First, a welding fixture 1 is used to weld two conductive pins 3 to be tested along a standard straight line, ensuring uniform stress on the welded joints. Then, two testing clamps 2 hook the two ends of the welded conductive pins 3 respectively. This allows the tensile test value to accurately reflect the weld strength between the two conductive pins 3.
[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A tensile testing fixture kit, characterized in that, include: A welding fixture is provided with at least one first limiting groove and at least one second limiting groove, both extending along the same straight line direction. The first limiting groove and the second limiting groove are respectively used to place two conductive pins to be welded. A welding groove is provided between the first limiting groove and the second limiting groove. A solder paste application mold is detachably connected to the welding groove. The solder paste application mold is provided with at least one solder paste application through hole, which is located between the first limiting groove and the second limiting groove. And two test fixtures, which are used to fix and stretch the two conductive pins welded together.
2. The tensile testing fixture kit according to claim 1, characterized in that, Both the first limiting groove and the second limiting groove penetrate the side wall of the welding fixture.
3. The tensile testing fixture kit according to claim 1, characterized in that, The welding fixture has several first limiting grooves and several second limiting grooves. The solder paste application mold has several solder paste application through holes. Several first limiting grooves are arranged on the welding fixture, and several second limiting grooves are arranged on the welding fixture. The several first limiting grooves and several second limiting grooves are arranged in a one-to-one correspondence.
4. A tensile testing fixture kit according to claim 3, characterized in that, The inner diameter of several first limiting grooves decreases sequentially; the inner diameter of several second limiting grooves decreases sequentially; and the diameter of several solder paste-coated through holes decreases sequentially.
5. A tensile testing fixture kit according to claim 1, characterized in that, The welding groove, the first limiting groove, and the second limiting groove have the same depth.
6. A tensile testing fixture kit according to claim 1, characterized in that, The solder paste application mold is matched with the soldering groove.
7. A tensile testing fixture kit according to claim 1, characterized in that, One side of the welding groove penetrates the side wall of the welding fixture. The solder paste application mold includes a mold section and a pick-and-place tool. The pick-and-place tool is disposed at one end of the mold section. The pick-and-place tool extends along the length direction of the welding groove and penetrates the side wall of the welding fixture.
8. A tensile testing fixture kit according to claim 1, characterized in that, The welding fixture is provided with a size mark, which is located on the welding fixture near at least one of the first limiting groove and the second limiting groove.
9. A tensile testing fixture kit according to claim 1, characterized in that, One end of the test fixture is provided with a V-shaped groove, which is used to fasten the V-shaped end of the conductive needle column for tensile testing. The end of the test fixture opposite to the V-shaped groove is provided with a clamping part, which is used to clamp the chuck of the tensile testing machine.