MIDDLE FRAME FOR ELECTRONIC DEVICE, MANUFACURING METHODE THEREOF AND ELECTRONIC DEVICE HAVING MIDDLEFRAME

摘要

A middle frame manufacturing method including multiple edges while covering the lateral circumference of an electronic device includes: a step of extrusion-molding a plastic frame which includes a lateral side and a rear side extended from the lateral side in a vertical direction; a step of settling the plastic frame on a bending machine; and a step of forming edges by bending the plastic frame at a set curvature. The edge forming step is repeated as many as the number of the edges. The method also includes: a step of fixing the bending area of the plastic frame where edges are to be formed using a jig; a step of pre-heating the bending area; a step of bending the plastic frame using a jig at the set curvature and forming the edges. The present invention provides a neat and soft-feeling middle frame by minimizing the joint units and forming the edges in a curved shape. [Reference numerals] (S110) Mold a plastic frame which includes a lateral side and a rear side combined to the lateral side in a vertical direction through extrusion; (S120) Cut a bending groove on a bending area where edges are to be formed; (S130) Settle the plastic frame on a bending device; (S141) Fix the bending area where the edges of the plastic frame are to be formed using a jig; (S143) Pre-heat the bending area; (S145) Form the edges by bending the plastic frame to the set curvature using the jig; (S147) Cool the bending area; (S149) N^th time?; (S170) Withdraw the plastic frame from the bending device