Automatic paper advance device

Abstract

The invention provides an automatic paper advance device. The automatic paper advance device comprises a paper obtaining device, a first conveying idler wheel set and a second conveying idler wheel set. The first conveying idler wheel set comprises a first rotary shaft, a first idler wheel and a power connection device. When the power connection device is connected with the first rotary shaft and the first idler wheel to convey a first piece of paper, the first rotary shaft drives the first idler wheel to rotate. When the front edge of the first piece of paper reaches to the second conveying idler wheel set, the paper drives the first idler wheel to rotate at a high speed, and the power connection device is enabled to be released from the power connection with the first idler wheel and the first rotary shaft. And then the first idler wheel enters in a static state to rectify the skew of the next piece of paper. The automatic paper advance device is capable of solving the problem of the skew of the paper, improving paper advance efficiency, and greatly reducing working time.

Description

technical field [0001] The invention relates to an automatic paper feeding device, in particular to an automatic paper feeding device with the function of correcting skewed paper. Background technique [0002] In order to facilitate users to perform a large number of copying or scanning paper operations, common office machines, such as copiers, scanners or all-in-one machines, are often equipped with automatic paper feeding devices, so that paper can be placed in order without manual placement. Access to office machines to perform copying, scanning or other operations to achieve the effect of reducing labor costs. [0003] However, if the paper is not aligned when it is placed initially, the paper entering the office machine will be skewed, which will not only reduce the copying or scanning quality of the office machine, but also easily cause paper jams in the automatic document feeder, which is not conducive to subsequent operations. Therefore, in order to prevent the skew...

AI Technical Summary

Problems solved by technology

As mentioned above, the rotating shaft 121 in the stationary state stops the paper S from advancing until the leading edge of the paper S completely reaches the roller 122 before starting to rotate. However, it takes an additional period of time for the rotating shaft 121 to accelerate from the stationary state to the normal speed.

If the process of conveying each sheet of paper must go through an acceleration process, for the existing automatic paper feeding device 10 that often handles a large amount of paper, it will not only reduce the paper feeding efficiency, but also greatly increase the working time

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