Tension control method and apparatus of roll-to-roll intermittent flexible substrate transmission

Abstract

The invention provides a tension control method for transportation of coil-to-coil intermittent flexible parent metal. In the method, the movement of a drive roll is controlled by collecting the actual displacement of the drive roll according to the comparative result of the actual displacement and the reference instruction of displacement, thus controlling the displacement of the drive roll in a closed-loop way; the actual tension value of the parent metal between a driven roll and the drive roll and the actual displacement of the driven roll are collected, and the reference instruction of the displacement is amended according to the comparative result of the actual tension and the predetermined tension; the actual displacement of the driven roll is compared with the amended reference instruction of the displacement; the movement of the driven roll is controlled according to the comparative results, thus controlling the displacement of the driven roll in a closed-loop way. The invention further provides a device for achieving the method, which comprises a drive roll displacement closed-loop control circuit, a driven roll displacement closed-loop control circuit, and a tension reactive circuit connected with the driven roll displacement closed-loop control circuit. The device for achieving the method can be prevented from being impacted by large tension, and keep the tension stable, and can accurately position the flexible baseplate while the baseplate is fed intermittently.

Description

technical field [0001] The invention belongs to the field of semiconductor packaging equipment manufacturing, and in particular relates to a tension control method and device for flexible substrate roll-to-roll intermittent feeding, especially suitable for flexible substrate transmission in radio frequency identification (Radio Frequency Identification, RFID) electronic label packaging Control of medium tension. Background technique [0002] Roll-to-roll (Roll-to-Roll) refers to the technology of converting (Converter) and transporting (Transport) continuous flexible film materials through a roller structure. Generally, it is composed of unwinding roller, driving roller, receiving roller and several guide rollers. The roll-to-roll transfer can be carried out by either continuous feed or intermittent feed for transfer and positioning. Because this production method has the advantages of low manpower, low production cost, high production capacity and meeting the diversity of...

AI Technical Summary

Problems solved by technology

[0007] 1. The use of speed synchronization control can eliminate the influence of the asynchronous speed of each material roller on the tension of the substrate, but it cannot eliminate the change of substrate tension caused by the asynchronous position of each material roller caused by various disturbances

[0008] 2. Due to the relatively high mechanical inertia of the swing arm or floating roller, the performance of adjusting the tension during high speed and high acceleration and deceleration operation is limited to a certain extent

At the same time, the precision of tension control is also limited.

[0009] 3. The complex mechanical structure also increases the installation and maintenance costs of the equipment

[0010] Therefore, the existing tension control methods cannot meet the requirements for tension control during fast intermittent feeding in semiconductor packaging.

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