Punching mould of LCD (liquid crystal display) flat-panel display back plane bevel edge convex packet and punching method

Abstract

The invention claims a punching mould of LCD (liquid crystal display) flat-panel display back plane bevel edge convex packet and a punching method, wherein the punching mould comprises a first module and a second module, the first module comprises a first punching head and a first lower template, the first lower template is provided with a first forming groove which is sunk, the second module comprises a second punching head and a second lower template, the second lower template is provided with a second forming groove which is sunk; the punching method of the invention using the punching mould comprises the following steps: punching materials with the first module to form a middle convex packet; performing back processing to the middle convex packet with the second module to form a target convex packet; the punching mould and the punching disclosed by the invention have the advantages of using two sets of modules to reduce the torsion of the material caused by forming, and using a nitrogen spring and a pressure line to increase material pressing force caused by punching and forming and to prevent pulling the materials on the plane to make the plane rebound.

Description

technical field [0001] The invention relates to a stamping die and a stamping method, in particular to a stamping die and a stamping method for a beveled convex hull of an LCD flat panel display, and belongs to the field of stamping dies. Background technique [0002] LCD display technology has achieved rapid development in recent years, which has led to the simultaneous growth of the related LCD display backplane industry. LCD display backplane is a product with high technical content, such as product distortion, edge shaking, local rebound, etc. Especially for a large-size LCD display backplane, the technical difficulties of stamping include: product distortion And the local rebound index is kept within a certain error range, which also means that higher requirements are put forward for the stamping die. [0003] like figure 1 , figure 2 As shown in , the hypotenuse convex hull 10 is an important structure in the backplane of the LED display. Compared with the circular...

AI Technical Summary

Problems solved by technology

[0003] like figure 1 , figure 2 As shown in , the hypotenuse convex hull 10 is an important structure in the backplane of the LED display. Compared with the circular convex hull 11, the hypotenuse convex hull 10 has a larger span, and the distortion of the product and the local rebound index are greatly affected during stamping. The impact is relatively large, especially when the overall height of the beveled convex hull 10 is high, the existing one-time dies and methods for stamping the beveled convex hull 10 cannot control the product distortion and local rebound index well.

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