Laminated medium aligning mechanism and processing unit provided with same

Abstract

Disclosed is an alignment mechanism for sheet media and a processing device having same, wherein the alignment mechanism comprises a driving roller (2) for transmitting media in a media transfer passage, alignment baffles (3) capable of entering into or exiting from the media transfer passage to align the media, a floating mechanism (1) and a switching mechanism. The floating mechanism (1) comprises a rotation shaft (12) extending in the width direction of the media transfer passage, at least one first support bracket (11) pivotably connected to the rotation shaft, a floating roller (13) which floats and is located in a groove hole of each of the first support brackets via shaft ends and is tangentially mated with the driving roller (2), and elastic components (14) to enable each of the first support brackets to deflect in the direction approaching the driving roller (2). When the alignment baffles (3) enter into the media transfer passage, the switching mechanism causes each of the first support brackets to deflect in the direction away from the driving roller (2). The alignment mechanism is not only able to reliably align the media but also able to reliably transfer the media, thus is highly reliable.

Description

technical field [0001] The invention relates to a sheet medium processing device, in particular to a medium alignment mechanism of the sheet medium processing device. Background technique [0002] Existing sheet media processing devices, such as the media alignment mechanism of sheet media processing devices such as printers, scanners, and currency detectors, usually use a movable alignment baffle to stop the conveying media and align them, and then convey them downstream. to print or scan at the desired location. [0003] This alignment mechanism is composed of a driving roller connected with a drive motor and a driven roller tangentially matched with the driving roller. When the same pair of drive rollers are used for media alignment and paper feeding, the media experiences the same friction force during alignment as it does during paper feeding. However, in order to ensure the alignment effect, the friction force on the surface of the medium is required to be small enou...

AI Technical Summary

Problems solved by technology

However, in order to ensure the alignment effect, the friction force on the surface of the medium is required to be small enough so that the medium can slip relative to the drive roller to achieve alignment. When conveying the medium, the friction force on the surface of the medium is required to be large enough so that the medium can move As the transmission roller rotates, it is transported downstream, so this structure cannot guarantee reliable alignment and reliable transport at the same time

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