Eyeglass frames quality issues and testing methods: tensile performance

Publish Time: 2022-12-13 Author: SkyLine Editor

The strength of the hinges, nose bridge and other welded joints of the glasses are evaluated by the eyeglasses frame tensile tester. If they do not reach the standard and break off, the glasses are unqualified and need to be discarded and redone. Qualified eyeglass frames need to be guaranteed to be safe to wear for 2 years or more.

Eyeglasses are composed of lenses and frames. The function of the lenses is to correct vision and protect the eyes, while the function of the frame in addition to its function as a support for the lenses constitute glasses worn on the human eye to play a role in support, it also has a cosmetic, decorative and other roles. Of course, in addition to beautiful and innovative style, the eyeglasses frame should also consider the durability, with a certain degree of solidity. This section mainly describes about the eyeglass frame tensile test.

The tensile performance test of eyeglasses mainly assesses the tensile strength of each welding point of the frame, including the strength of the welding points of the head of the Chuang, hinges, nose bridge, etc. Test equipment with a precision of not less than 1% of the soil of the glasses tensile tester for testing. Before the test, to take off the test piece, metal frame in the left and right two mirror legs from the hinge center 20 mm to do the opposite direction tension, plastic frame in 5 mm from the hinge within the fixed front frame, in 30 mm from the front frame clamped a mirror leg, along the mirror leg direction force, plastic frame of another mirror leg repeat the above test, the mirror frame withstand the tension of 98.0N, tensile performance test, the frame should not break, do not fall off.

The eyeglass tension tester(welding pull tester) can control the rotation of the frequency conversion motor, and after deceleration by the variable speed mechanical mechanism, drive the T-screw to drive the load sensor up and down to complete the tensile or compression test of the sample. The force value is output by the sensor, fed back to the monitor, and the test displacement is displayed in real time. It can realize the set value of force, positioning displacement and other tests to ensure that it can reach the testing requirements of glasses resistance and tension.

The strength of the hinges, nose bridge and other welded joints of the glasses are evaluated by the eyeglasses frame tensile tester. If they do not reach the standard and break off, the glasses are unqualified and need to be discarded and redone. Qualified eyeglass frames need to be guaranteed to be safe to wear for 2 years or more.

Tags: tension tester | tensile tester |