Device for detecting firmness degree of mask ear strap welding spots

The utility model provides a device for detecting the firmness degree of a welding spot of a mask ear band, which comprises two groups of mechanical traction devices symmetrically arranged on the same straight line, each group of mechanical traction device consists of a traction assembly and a tension detector, and the traction assembly can move towards two separated sides under the pulling of the tension detector; the device further comprises two sensors capable of detecting objects, and the two sensors are located between the two traction assemblies. According to the device for detecting the firmness degree of the welding spots of the ear bands of the mask, the ear bands are pulled through the tension detector, whether the ear bands are broken or not is sensed in a photoelectric detection mode, synchronous detection of the tensile strength of the ear bands and the firmness degree of the welding spots is achieved, and the detection efficiency and the product quality are improved; the principle and the struct