Dropping paper is a frequent problem in the puzzle books printing manufacturer. Paper drop refers to the phenomenon that the printed paper falls under the machine during the process of entering the drum to the paper receiving table, and the failure of paper drop will cause more waste products and delay production. Therefore, in order to avoid the occurrence of this phenomenon, it is important to understand the causes of the phenomenon of paper dropping. So what are the reasons for the phenomenon of dropping paper in printing?

First, positioning, paper feed connection time is not correct

When the printed paper reaches the front gauge, due to the inconsistency between the speed of the wheel paper and the connecting time of the gauge, the paper feed positioning is disarranged, the paper is not good and the paper is dropped.

2. The distance between the former specified bits is incorrect

After the printing paper arrives at the specified position, the paper teeth hold the paper 4-6 mm, too much is easy to tear the printing paper, too little is due to insufficient paper and drop the paper.

Three, printing paper paper corners up

When the printing paper goes to the front specified position, because the paper Angle at the mouth of the printing paper is tilted up, the height of the tooth piece is lower than the height of the paper Angle when the paper is gripped, so that the paper can not be completely gripped, and even when the teeth are closed, the printing paper will pop back out because the printing paper is too little and the paper is dropped.

Fourth, the printing paper is uneven and wavy

Printing paper is not uniform, resulting in paper feeding difficulties. Especially the white board paper, it is easy to produce the pre-programmed paper is not in place, so that the paper teeth hold too little paper, or even cannot hold the printed paper, resulting in the paper receiving tooth row and the paper handing tooth row can not be transferred normally and the paper is dropped.

Five, paper feeding is not normal

Due to the improper adjustment of the machine, the paper is skewed, too fast or too slow, resulting in unstable paper holding teeth and dropping paper.

Six, the paper tooth row is not enough

When half of the paper is dropped or only half of the individual teeth hold the printed paper, it means that the teeth hold the paper force is too light, and the paper holding force should be adjusted again.

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