Welded nut drawing force performance detection device

Abstract

The invention relates to a welding nut drawing force performance detection device. A to-be-detected product (6) comprises a bottom sheet (61) and a nut (62) welded on the bottom sheet (61). The device comprises a pressurization mechanism used for providing detection power; a force transmission mechanism used for transmitting the detection power to the nut (62); a supporting mechanism used for supporting the pressurization mechanism; and a product positioning plate (42) used for fixing the to-be-detected product. The pressurization mechanism is connected with the force transmission mechanism. At least one ejector pin (41) is arranged below the force transmission mechanism. A through hole with the size larger than that of the nut (62) is formed in the product positioning plate (42). During testing, the to-be-tested product (6) is placed on the product positioning plate (42), the nut (62) is located in the through hole, and the ejector pin (41) abuts against the nut (62). Compared with the prior art, the device has the advantages of no need of clamping, controllable load, no obvious test trace and the like.

Description

technical field [0001] The invention relates to the field of detection devices, in particular to a detection device for the pulling force performance of weld nuts. Background technique [0002] Some parts on the car seat are completed by stamping the bottom sheet and the nut through resistance projection welding machine welding, such as figure 2 , The performance of the welded product needs to meet certain indicators, especially the pull-out force of the nut. It is necessary to ensure that the welded nut does not fall off under the condition of strong stretching. [0003] In order to meet the performance index of the product after welding, a device for testing the nut pull-out performance of the product is needed to avoid product safety due to the outflow of false welding and false welding caused by people, machines and materials involved in the welding process. Performance failure. [0004] Most of the existing pullout performance testing devices need to clamp the nut and...

AI Technical Summary

Problems solved by technology

[0003] In order to meet the performance indicators of the product after welding, a device for testing the nut pull-out performance of the product is needed to avoid product safety due to the outflow of virtual welding and false welding caused by people, machines and materials involved in the welding process. performance failure

[0004] Most of the existing pullout performance testing devices need to clamp the nut and then stretch it. In this way, after each test, there are clamp marks or scratches on the nut, which is very ugly.

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