Mobile phone curved face shell hot bending die

Abstract

The invention discloses a hot-bending die for a mobile phone curved surface shell, which comprises an upper punch and a lower die. At least one side of the bottom of the upper punch is provided with a positioning bump, and the middle part of the upper punch is provided with a forming groove. The four corners of the forming groove are provided with an arc-shaped surface; the lower die is provided with a positioning groove matching the positioning bump, and the middle part of the lower die is provided with a groove matching the forming groove. Forming boss, the periphery of the forming boss is provided with the side arc surface of the boss matching the side arc surface of the forming groove, and the four corners of the forming boss are provided with the convex corner matching the corner arc surface of the forming groove. The curved surface of the table corner is provided with movable binder plates on opposite sides of the forming boss of the lower die. The invention can solve the problems of downward bending and uneven deformation at the bottom of the curved part of the curved shell of the mobile phone.

Description

technical field [0001] The invention relates to the field of stamping dies, in particular to a hot-bending die for a mobile phone curved surface shell. Background technique [0002] In the bending stamping process, the cold bending forming completed at room temperature, because the blank is not heated, cold work hardening will occur, resulting in a decrease in the plasticity index of the material and an increase in deformation resistance. In order to eliminate unfavorable factors such as cold work hardening, hot pressing bending is usually used craft. Common mobile phone curved surface shell hot bending molds are prone to deformation due to the low strength of the processed materials in the heated state. When bending the workpiece, the connecting edge in the middle of the workpiece may be bent down and uneven, and the longer the connecting edge, The thinner the material, the more severe this phenomenon will be. And because the stamping die is subjected to hot pressing, the...

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Problems solved by technology

[0003] In order to eliminate this phenomenon and solve the deficiencies in the prior art, the invention provides a mobile phone curved shell hot bending mold, which can solve the problem of downward bending and uneven deformation at the bottom of the curved shell of the mobile phone and ensure the shape of the bent piece quality, life of protection groove

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