Tensioning device, hot bending mechanism and hot bending machine

Abstract

The present disclosure relates to a tensioning device, a hot bending mechanism and a hot bending machine. The tensioning device includes a driving unit, a first tensioning shaft and a second tensioning shaft that are spaced apart and opposite to each other, a tensioning force detection unit, and a tensioner The tension adjusting unit, the first tensioning shaft and the second tensioning shaft are used for fixing the flexible pressing piece, and the driving unit can drive at least one of the tensioning shafts to rotate for winding the flexible pressing piece, and / or can drive at least one of the tensioning shafts to rotate. One of the tensioning shafts is far away from the other tensioning shaft, so as to realize the tensioning of the flexible pressing piece. The tension detection unit is used to detect the tensioning force of the flexible pressing piece and can feedback the information of the tensioning force to the A tensioning force adjustment unit, which adjusts the tensioning force of the flexible pressing piece according to the tensioning force information. Avoid unstable tension and lead to poor glass forming.

Description

technical field [0001] The present disclosure relates to the technical field of curved glass, and in particular, to a tensioning device, a hot bending mechanism and a hot bending machine. Background technique [0002] With the ever-changing development needs of industries such as smart phones, smart TVs, and new integrated central control display technology for vehicles, the market demand for curved screen display technology is becoming more and more widespread due to its regular appearance and beautiful shape. The 3D curved glass required for the curved screen is the most critical part of the curved display technology, and its requirements for production technology are getting higher and higher. [0003] The current 3D curved glass is difficult to bend, the method is complicated, and the production efficiency is low. One of the main problems corresponding to it is high thermal power consumption and low yield. The current heating method is to heat the mold and the glass as ...

AI Technical Summary

Problems solved by technology

[0003] The current hot bending of 3D curved glass is difficult, the method is complicated, and the production efficiency is low. Correspondingly, one of the most important problems is high thermal power consumption and low yield rate.

The current heating method is to heat the mold and the glass as a whole, and the part of the glass that does not need to be bent must be heated to the highest temperature, and there is a problem of heat waste

In addition, the current hot bending is generally formed by pressing the upper and lower molds, the shape of the mold is complex, and the development cost is high, and the glass is squeezed by the upper and lower molds, so the quality of the glass is affected by the surface quality of the mold, the matching accuracy of the upper and lower molds, and mold wear. Larger, the stability and uniformity of glass quality are difficult to stabilize

[0004] In particular, in the process of covering and bending the glass by the upper and lower molds, excessive pressure often occurs, resulting in quality defects such as glass breakage and glass deformation.

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