Causes and troubleshooting methods of bottled wireless perfect binding process

The fault problems and solutions that I often encounter in equipment management and quality management are summarized for reference by peers. The universal application of paper-bound perfect binding automatic production lines in book and printing companies has laid a solid foundation for the development of post-press processing to high speed and automation. Direction development. However, there are still many equipment failures in the binding process, affecting the production cycle and product quality.

Malfunction: There are many posts and few posts in the page, and the rate of returning books is high

In order to ensure the quality, the collating machine has an automatic detection device for multiple posts and few posts. After the pages are collated, there are staff to check the book blocks. Through such repeated inspections, there are basically no major errors such as multiple posts and few posts in the book. The workshop strictly implements a layer-by-layer check system, and the work responsibilities of each process are implemented to people, so that the return rate of books can be guaranteed below zero per 100,000. Five national standards. However, the wireless binding line is generally arranged by two staff per class to be inspected by the staff, and the book is "ten drawn and one" checked. For some occasional problems, it is not easy to find out that it is impossible to complete each book after the package is completed. , Can be checked in turn. Especially for the 32-book double-book, if there is a double-post wrong, there are two books in the hands of the readers, which increases the rate of returning books. The causes of faults caused by the collating machine are as follows:

1. The signature detection wheel of the ZXJ440 hybrid collating machine is worn or the gripper position of the gripper is not the same as the working point of the proximity switch.

The working principle is that when the signature rotates with the gripping paper wheel to the detection pressure roller, after rolling, if the thickness of the signature is greater or less than the adjusted thickness, the displacement sensor acts to transmit the signal to the detection control box, which is controlled by the computer The next ten collating machines stopped collating and sent the signature to the bad book bucket. The detection of multi-posted signatures is based on the gripping of the paper wheel to read the signatures and then to the detection pressure roller. After rolling, the multi-post signatures are eliminated by the lever of the detection pressure roller and the work of the proximity switch; The detection is the detection signal through the photoelectric switch, which is controlled by the computer to eliminate the less post. Due to the long-term rolling of the detection pressure roller, the working face is worn out, and the lever amplification effect will be lost. The installation position of some gripper wheels will change, and the working contact surface of gripper and detection pressure roller will change, which cannot be detected normally.

Remedy: refer to the adjustment method of the nine-hole disk of the ZXJD440A medium-speed paperback wireless perfect binding linkage line, check the detection position according to the requirements of the manual, check the working time of the proximity switch and the displacement signal in the computer, replace the worn detection roller, and then adjust the thickness To ensure that multi-post book blocks are eliminated.

2. The book lever on the book collection chain does not match the drop position of the signature on the grip wheel.

The main reason is that the double-sized 32-page double-headed book is longer and requires accurate fall. If the fall is too late, the previous post will fall on the post of the post, resulting in more posts in the latter book and less in the previous book Post.

Remedy: Move the book chain backwards so that the signature falls on the middle position of the two dials. And was taken away by the book lever.

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