Multi-layer registration control system and method for flexible label winding lamination

Abstract

The invention discloses a multilayer film registration control system and method for flexible RFID tag coiling recombination, and the method comprises the steps: (a), forming the system through a feeding unit, a recombination unit, and a material receiving unit; (b), inputting technological reference values: tag step, working tension and tension boundary; (c), enabling a plurality of sensors to cooperatively detect the registration deviation of a multilayer film in a movement feeding direction according to the triggering position relation, building a tension and registration deviation relation model, and converting the registration deviation into a tension adjustment variable; (d), synchronizing the feeding speed of the multilayer film under the target tension in a mode of tension-position-speed closed loop control, correcting the registration deviation, and carrying out the recombination; (e), building a feeding and material receiving coiling diameter algorithm, adjusting the torque output of a driver according to the changes of a coiling diameter, and guaranteeing the constant-tension operation of material feeding and receiving. The method can achieve the high-speed and high-precision registration requirements of the multilayer film under the condition of a controllable tension, and is especially suitable for the preparation of a flexible RFID tag recombination product.

Description

Technical field [0001] The invention belongs to the technical field of RFID electronic tag composite technology, and more specifically, relates to a multi-layer film registration control system and method for flexible RFID tag winding composite. Background technique [0002] RFID label compounding is a subsequent process of chip flip-chip bonding. The roll of the middle layer Inlay and the patterned lower and upper films are registered and compounded to form electronic labels of different shapes. [0003] Among them, the multi-layer registration of the label movement direction and the constant tension control of rewinding and unwinding are the key technologies in the compounding process. Printing accuracy, differences in materials, feed roller speeds, and tension fluctuations will all affect the registration effect. In particular, due to the obvious difference between Inlay and base paper and top paper materials, the deformation degree for the same tension is different, and the ten...

AI Technical Summary

Problems solved by technology

In this method, the tension is used as an indirect adjustment value, which cannot effectively predict the tension change after compensating for the position deviation. If the tension exceeds the critical value, it is easy to cause the film to relax or break, and it cannot be used for high-speed lamination of multilayer films.

Regarding the control method of feeding and unwinding, magnetic powder clutches and brakes are generally used, and the response speed is not ideal.

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