Paper blocking mechanism

Abstract

A paper blocking mechanism comprises a paper blocking plate and a paper feed pallet and is characterized by comprising: a drive shaft connected with a power source and with a paper taking reel in a driving manner; a pull insert arranged on the drive shaft and swinging between a first position and a second position when the drive shaft rotates; and the paper blocking plate comprising a paper blocking part and arranged in the paper blocking mechanism by pin joint, wherein when the pull insert is at the first position, the pull insert butts the paper blocking plate so that the paper blocking part of the paper blocking mechanism is at one paper blocking position of the paper feed pallet; and when the pull insert is at the second position, the pull insert breaks away from the butting to the paper blocking plate which is at a releasing position in paper feed. The paper blocking mechanism can make use of the existing power driving mechanism to control the functions of the paper blocking plate and realize the paper blocking and releasing functions of the paper blocking plate, is reasonable in structural design, needs few elements, reduces cost and improves assembly convenience.

Description

technical field [0001] The invention belongs to a paper feeding device of a fax machine, a scanner or a printer, and in particular relates to a paper blocking mechanism of an automatic paper feeding device. Background technique [0002] At present, the fax machines, scanners or printers on the market, as well as multi-functional business machines, all use automatic paper feeding as their basic configuration function. The automatic paper feeding mechanism usually uses a paper stopper to complete the paper positioning. Its main function It is to allow the user to place the paper to the automatic document feeding mechanism (ADF), and the paper can reach the position of the paper stop mechanism and produce a blocking feeling, and stop at an appropriate position, so that the automatic document feeder will not cause a single accident when grabbing the paper. The situation of taking multiple sheets (multi feed) or not getting paper (miss feed) occurs. [0003] For example, U.S. Pa...

AI Technical Summary

Problems solved by technology

Such a complex mechanism has many original parts, which is prone to assembly and actuation problems

At the same time, its cost is also high. Using the rotating shaft to drive the linkage mechanism not only requires an external power source to precisely control the rotation of the transmission shaft, but also increases energy consumption and increases the complexity of the rotation control of the transmission shaft.

Images