In order to solve the problem that the winding block of Reel Feeding(RF)device is easily broken,the working principle,function and force of the winding block of RF device are studied.After in-depth analysis,it is found that the reason why the positioning block is easy to break is that the stress value of the stress concentration point is greater than the maximum allowable stress value of the material.Through calculation,the principle that the force of the part should be less than the allowable strength of the material can be satisfied by reasonably increasing the diameter of the positioning block.A new coil winding block is made according to the calculated diameter and installed on the RF device.After 3 months of operation,the number of failures is significantly reduced.
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