Intermittent one-way conveying device

Abstract

The invention relates to an intermittent one-way conveying device which is arranged on a material moving stroke, and conveying materials perform one-way action in a regular start and stop form in thematerial moving stroke. The device comprises a brake roller and a brake pressing roller, wherein the conveying materials are propped to the brake roller through the brake pressing roller, so that thelinear velocity of the surface of the brake roller is consistent with the forward moving velocity of the conveying materials; the brake pressing roller comprises a central shaft and an outer barrel which are independent from each other; the outer barrel acts in step with the conveying materials; and the central shaft and the outer barrel form a fitting structure which meets the requirement that braking assistance is supplied at the initial instant of stopping and waiting of the outer barrel, or pushing assistance is supplied at the initial instant of starting of the outer barrel. The conveyingdevice meets the conveying requirement of regular intermittent one-way material moving; the material moving and stopping and waiting type regular conveying modes are formed; the conveying materials are rapidly and accurately started and braked; and the action accuracy is high.

Description

technical field [0001] The invention relates to the technical field of rotary machines, in particular to an intermittent one-way feeding device. Background technique [0002] At present, the widely used positive and negative gap rotary presses play an important role in wide-format label printing due to their convenience of plate changing and precise overprinting accuracy. But the device still has the following defects: [0003] (1) Since the equipment has to be reversed in forward and reverse directions, the load on the motor is increased, the development accuracy of the software is very high, and it limits the increase in printing speed. [0004] (2) The current operating frequency of forward and reverse gap transfer printing is up to 250 times / min, but it can only adapt to materials with a width of less than 40cm. If the width is increased to 1m, the frequency is only 50-60 times / min. The production speed has been greatly reduced, that is, the forward and reverse reverse...

AI Technical Summary

Problems solved by technology

[0003] (1) Due to the forward and reverse reversing of the equipment, the load on the motor is increased, the development accuracy of the software is very high, and it limits the increase in printing speed

[0004] (2) The current operating frequency of forward and reverse gap transfer printing is up to 250 times / min, but it can only adapt to materials with a width of less than 40cm. If the width is increased to 1m, the frequency is only 50-60 times / min. The production speed has been greatly reduced, that is, the forward and reverse reverse is currently mainly suitable for narrow-width gap transfer printing

[0005] (3) The printing material must be reversed together. In order to ensure the accuracy, the material bears a large tension. For soft materials, it is easy to be stretched and deformed, which further limits the scope of application of the equipment.

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