Film conveying deviation-rectifying device combining tension control

Abstract

The invention provide a film conveying deviation-rectifying device combining the tension control, which comprises a film input guiding roller, an output guiding roller, a deflection detecting mechanism, a tension detecting mechanism, a controller and a deviation-rectifying actuating mechanism, wherein the film input guiding roller and the output guiding roller are used for inputting a film guide into the deviation-rectifying actuating mechanism and outputting the film guide from the deviation-rectifying actuating mechanism; the deflection detecting mechanism is used for detecting whether the film deflects or not; the tension detecting mechanism is used for detecting the film tension; the controller is used for generating deviation-rectification or/and tension control instruction as per the detection information; the deviation-rectifying actuating mechanism comprises a spherical motor, a deflection frame and a deviation-rectification roller; a runner of the spherical motor drives the deflection frame to rotate on a feeding surface of the film; the friction between the rectification roller and the film drives the inverse rotation of the film to realize the deviation-rectification; meanwhile, the runner of the spherical motor drives the deflection frame to rotate on the surface vertical to the feeding surface of the film, so as to tighten or loose the film to realize the tension control. According to the invention, the deviation-rectification and the tension control of the film can be realized simultaneously, the influence of the tension variation on the deviation-rectification is greatly reduced, the structure is simple, and the deviation-rectifying precision is high.

Description

technical field [0001] The invention relates to the field of coil material conveying, in particular to a film conveying deviation correcting device with tension control. Background technique [0002] The deviation correction device is widely used in printing, textile, RFID packaging, steel and other industries related to film transmission. Most production lines have very high requirements on the accuracy of film conveying lateral offset, otherwise it will affect the product processing quality. The film is deflected laterally. In addition, a tension control device will be installed near the web correction device. In the general production line, the deviation correction device and the tension control device are two sets of equipment, each of which works independently. In fact, the change of film tension will affect the lateral offset. If the deviation correction control and tension control can be integrated, the film operation control will be greatly improved. quality. [...

AI Technical Summary

Problems solved by technology

[0006] The transmission mechanisms used in the existing correction device products at home and abroad are basically stepping motors (or DC motors) driving screw rods (or belts, gears) and other transmissions, all of which have complex structures, high machining accuracy requirements for parts, and poor response. The speed is slow and other shortcomings, and it is not integrated with the tension control device, and the deviation correction accuracy has reached the bottleneck. At present, the highest control accuracy of foreign deviation correction devices applied to flexible electronic packaging equipment such as RFID electronic tags is only ±0.1mm

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