A constant stress winding control system and method for variable cross-section flexible electronics

Abstract

The present invention is a technical field of flexible electronic collection control control, and has disclosed a constant stress revenue control system for cross -section flexible electrons.Controller and executing parts, etc.; The roll diameter sensor is used to achieve the measurement of the outer diameter of the material; the tension sensor is used to detect the tension of the film and feedback to the tension controller to achieve the tension of the tension;The conductive slip ring and several fixed parts are used to achieve measurement of the internal stress distribution state of the material volume and feed it to the tension controller to achieve the closed -loop control of the internal stress of the material.The present invention also disclosed the corresponding scroll control process.Through the present invention, the detection of the internal stress distribution state in the roll can be achieved in a more efficient and high -precision way, and the internal stress of the material volume is evenly distributed to improve the quality of the material.

Description

technical field [0001] The invention belongs to the related technical field of flexible electronic winding control, and more specifically relates to a constant stress winding control system and method for variable cross-section flexible electronic. Background technique [0002] At present, all kinds of flexible materials are generally transported and stored by being wound into rolls, and the winding quality of the rolls affects the transportation, storage and processing of the next process. In practical application, it is found that the distribution of internal stress of the material roll will directly determine the quality of the material roll. When the internal stress distribution of the material roll is not uniform, it is easy to cause uneven internal thickness of the film during storage, and even cause internal fracture in serious cases. . [0003] In particular, for flexible electronics such as flexible electronic displays, OLEDs, RFID tags, and thin-film solar panels,...

AI Technical Summary

Problems solved by technology

In this case, in addition to the commonality of other flexible materials, flexible electronics also have a common feature that the cross-section of the film often changes in the feeding direction, which makes the internal stress distribution of such rolls more complex. complex and difficult to control

[0004] In the prior art, taper tension control is generally used for this problem. The taper coefficient of winding tension is mostly selected based on production experience. However, in the case of large coil diameter, it is often difficult to obtain an ideal material by adjusting the taper coefficient Volume

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