Sole flexing tester is used to measure the flexing resistance of shoe soles under continuous motion. Before the test, several holes are drilled at the position of maximum bending and Mount the specimen between two fixtures: a fixed clamp and a movable actuator. The specimen bends with the movement of the machine. After a certain number of test cycles, the specimen is removed and the difference in cut length is checked.

Test Steps

• Preparation of samples: Select the sole samples that meet the standard requirements and Cut specimens to dimensions specified in ISO 17707. A minimum of 3 specimens are required per test.

• Sample fixing: Fix the sole sample on the testing machine to ensure it is flat, vertical and stable. At the maximum bending stress line of the anti-slip pattern of the sole, use a notching knife to penetrate three small openings.

• Setting parameters: Adjust the test parameters such as bending angle, frequency and test times of the Shoe Sole Flexing Resistance Tester.

• Start test: Start the bennewart flexing machine and perform several bending tests. During the test, the degree of deformation and cracks on the sole should be carefully observed.

• Evaluation of results: After the test is completed, use a magnifying glass to inspect the degree of extension resistance of the sole, measure the final length of the cut on the surface of the specimen and compare it with the initial cut length. According to the standard requirements or product specifications, the test results are evaluated to judge whether the durability and bending performance of the sole meets the requirements.

• Record data: Record the test results, including test parameters, test results, sample information, etc., for quality control documentation.

• Bending angle: 90±2 , but can also be adjusted according to the test requirements.

• Mandrel diameter : 30mm, used to support the sole sample for bending.

• Bending speed: usually between 125-150cpm, but can be adjusted according to the test standard or demand.

• Width of fixture: to ensure stable fixation of the sole sample during the testing , the width is usually designed according to the size of the sole.

• Structure: The sole flexing tester usually comprises an electromechanical actuator, PLC control system, load cell, and specimen clamping assembly.