CN206795064U - Verify a kind of stretching device of Joint Strength - Google Patents

Abstract

The utility model discloses a stretching device for verifying the strength of solder joints, comprising: a first mechanism and a second mechanism, the first mechanism and the second mechanism are placed on a working platform; the first mechanism includes: a cylinder , body I, tightening device I, slider and track, the cylinder is connected to the body I, the tightening device I is arranged on the body I, and the slider is arranged below, and the slider slides in the track; the second mechanism, Including: body II, tightening device II, steel block, body II is installed on the steel block, tightening device II is located on body II; opening structures are provided on both body I and body II, and the opening structure on body I and The opening structure on the body II is of equal height. The application solves the problems of low efficiency of manual experiment verification, weld nugget cannot be torn instantly, tearing of weld nugget is not intuitive, and the like.

Description

A tensile device for verifying the strength of solder joints

technical field

The utility model relates to a stretching device, in particular to a stretching device for verifying the strength of solder joints.

Background technique

Spot welding is the most commonly used joining process on body-in-white. With the rapid development of the global automobile industry, the welding and appearance quality of body-in-white are becoming more and more important. Therefore, it is necessary to verify the rationality of welding parameters according to different nugget sizes. Experimentation becomes essential.

The selection of welding parameters is usually based on the material and thickness of the workpiece, referring to the welding condition table of the material, and first determining the shape and size of the end face of the electrode. Secondly, preliminarily select the electrode pressure and welding time, and then adjust the welding current to weld the samples with different currents. After checking that the diameter of the nugget meets the requirements, adjust the electrode pressure, welding time and current within an appropriate range to carry out the sample welding. Welding and inspection until the quality of the solder joints fully meets the requirements specified in the technical conditions.

The most commonly used method for testing samples is the tearing method. The sign of high-quality solder joints is: there is a round hole on one piece of the tearing sample, and a round boss on the other piece. Thick plates or quenched materials sometimes cannot tear out the round holes and bosses, but the diameter of the nugget can be judged by the sheared fracture. If necessary, low-magnification measurement, tensile test and X-ray inspection are also required to determine the penetration rate, shear strength and whether there are shrinkage cavities, cracks, etc., so this method is relatively cumbersome.

Utility model content

Aiming at the above-mentioned problems in the prior art, this application provides a stretching device for verifying the strength of solder joints, which solves the problems of low efficiency of manual experiment verification, inability to tear the weld nugget instantly, and unintuitive tearing of the weld nugget.

In order to achieve the above purpose, the technical solution adopted by this application is: a tensile device for verifying the strength of solder joints, including: a first mechanism and a second mechanism, and the first mechanism and the second mechanism are placed on the working platform; The first mechanism includes: a cylinder, a body I, a tightening device I, a slider and a track. sliding in the track; the second mechanism includes: body II, tightening device II, steel block, body II is installed on the steel block, and tightening device II is located on body II; there are opening structures on both body I and body II, so The opening structure on the body I is of the same height as the opening structure on the body II.

Preferably, the material of the body I and the body II is 45 steel.

Preferably, the cylinder, track, and steel block are in contact with the working platform.

Preferably, linear mounting holes are provided on both sides of the track for fixing the track on the working platform.

Preferably, the bottom of the steel block is provided with installation holes for fixing the steel block on the working platform.

Due to the adoption of the above technical scheme, the utility model can obtain the following technical effects: the use of No. 45 steel has high hardness, and the welding spot of the test piece will not be deformed due to external force when it is stretched and damaged, and the tightening devices of the first mechanism and the second mechanism are also simultaneously It ensures that the solder joints are destroyed by external force, thereby solving the phenomenon of uneven force on the solder joints and incomplete damage of the core in the manual tensile test; at the same time, it is also possible to judge the diameter of the solder joint nugget more clearly and intuitively, and verify different plate thicknesses Selection of combined welding conditions.

Description of drawings

The utility model has 3 accompanying drawings:

Fig. 1 is a schematic diagram of the structure of a tensile device for verifying the strength of solder joints;

Fig. 2 is the front view of a kind of tensile device for verifying the strength of solder joint;

Fig. 3 is a side view of a kind of tensile device for verifying the strength of solder joints;

Description of serial numbers in the figure: 1, working platform, 2, steel block, 3, body II, 4, tightening device II, 5, track, 6, body I, 7, tightening device I, 8, cylinder, 9, slide block.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

This embodiment provides a kind of stretching device for verifying the strength of solder joints, including: a first mechanism and a second mechanism, and the first mechanism and the second mechanism are placed on the working platform; the first mechanism includes: a cylinder, Main body I, tightening device I, slider and track, the cylinder is connected with the main body I, the tightening device I is arranged on the upper body I, and the slider is arranged below, and the slider slides in the track; the second mechanism includes : Body II, tightening device II, steel block, body II is installed on the steel block, tightening device II is located on the body II; both the body I and the body II are provided with an opening structure, the opening structure on the body I and the body The opening structure on II is of equal height.

Preferably, the material of the body I and the body II is 45 steel.

Preferably, linear mounting holes are provided on both sides of the track for fixing the track on the working platform. The bottom of the steel block is provided with mounting holes for fixing the steel block on the working platform.

When in use, put one side of the solder joint test piece into the opening structure on the body I, and put the other side into the opening structure on the body II, tighten the two sides respectively with the tightening device, press the cylinder switch, and the solder joint will be instantly Tearing, the exposed weld nugget is an instantaneous destruction weld nugget, and the rationality of the welding parameters can be visually verified through the weld nugget diameter.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (5)

1. A kind of stretching device for verifying the strength of solder joints is characterized in that it comprises: a first mechanism and a second mechanism, and the first mechanism and the second mechanism are placed on the working platform; the first mechanism includes: Cylinder, body I, tightening device I, slider and track, the cylinder is connected to body I, tightening device I is arranged on the body I, and a slider is arranged below, and the slider slides in the track; the second mechanism , including: body II, tightening device II, steel block, body II is installed on the steel block, tightening device II is located on body II; opening structures are provided on both body I and body II, and the opening structure on body I It is the same height as the opening structure on the body II. 2. A tensile device for verifying the strength of solder joints according to claim 1, wherein the material of the body I and body II is 45 steel. 3. A kind of stretching device for verifying the strength of solder joints according to claim 1, characterized in that, said cylinder, track, and steel block are in contact with the working platform. 4. A tensioning device for verifying the strength of solder joints according to claim 1, wherein linear mounting holes are provided on both sides of the track for fixing the track on the working platform. 5. A kind of stretching device for verifying the strength of solder joints according to claim 1, characterized in that, the bottom of the steel block is provided with a mounting hole for fixing the steel block on the working platform.