A paper feeding positioning device and its working method

Abstract

The invention discloses a paper feeding positioning device. The paper feeding positioning device comprises a front gauge, a paper pressing wheel, a paper feed roller, a paper feeding platform and a side gauge. The paper feeding positioning device is characterized in that the front gauge is arranged above the front part of the paper pressing wheel. The operating method comprises the following steps of: moving a piece of paper to forwards on the paper feeding platform under the action of a transporting belt; performing side positioning on the paper when the paper runs at the side gauge in the forward moving process; continuously moving the paper after being side-positioned, and performing front positioning on the paper by the front gauge when the front gauge swings to a positioning position under the action of a servo motor; and after finishing the front positioning, pressing the paper after position by the paper pressing wheel which is controlled to swing by the movement of a cam, and controlling the front gauge to swing upwards by the servo motor. The paper feeding positioning device provided by the invention has the advantages that the front gauge is arranged above the platform, when the paper is positioned, the distance between the paper and a paper receiving device is reduced, an error caused in the paper transportation process is reduced in a paper receiving process, and the accuracy is improved.

Description

(1) Technical field: [0001] The invention is suitable for printing machinery, especially for equipment that needs to use a belt platform to transport and position a single sheet of paper. (2) Background technology: [0002] Printing equipment will carry out paper conveying and positioning work before processing a single sheet of paper. The paper feeding positioning device of the prior art is as figure 1 , figure 2 As shown, the paper is conveyed to the lifted front gauge 1 under the joint action of the paper feed table pressing device 10 and the paper feed table belt; and the side gauge 9 is used to complete the side gauge 1 during the front positioning process of the paper. Positioning; after that, the side gauge 9 is lifted, the front gauge 1 swings below the platform, the pressure roller 3 presses down and the paper delivery roller 4 works together to transport the paper to the paper receiving device 7, thus completing a paper positioning and conveying process. This p...

AI Technical Summary

Problems solved by technology

This positioning method has the following disadvantages: ①After the paper is positioned by the side regulation of the front gauge, the paper is tilted again due to the unstable force when the pressure roller is pressed down; ②The front gauge of this positioning mechanism is below the platform, occupying a large space , resulting in a long distance between the front gauge and the paper splicing device, the distance between the paper, the pressure roller and the paper splicing device increases, and the paper shifts during the handover process; When it is not fully conveyed, it starts to swing upwards, so that the front gauge baffle scrapes the back of the paper, which will cause scratches on the back of the paper and increase the defective rate of the product; The paper feed point wheel starts to press down. During this period of time, the paper is not under any control, which will cause a secondary offset of the paper that has been positioned.

Images